ATMOSPHERIC COMPOSITION AND STRUCTURE NT Aerosols and particles Air/sea constituent fluxes Airglow and aurora ATMOSPHERIC COMPOSITION AND STRUCTURE - General or miscellaneous ATMOSPHERIC COMPOSITION AND STRUCTURE - Instruments and techniques Biosphere/atmosphere interactions Chemical kinetic and photochemical properties Cloud physics and chemistry Constituent sources and sinks Evolution of the atmosphere Geochemical cycles Ion chemistry of the atmosphere Middle atmosphere--composition and chemistry Middle atmosphere--constituent transport and chemistry Middle atmosphere--energy deposition Planetary atmospheres Pollution--urban and regional Pressure, density, and temperature Thermosphere--composition and chemistry Thermosphere--energy deposition Transmission and scattering of radiation Troposphere--composition and chemistry Troposphere--constituent transport and chemistry Volcanic effects ATMOSPHERIC COMPOSITION AND STRUCTURE - General or miscellaneous BT ATMOSPHERIC COMPOSITION AND STRUCTURE ATMOSPHERIC COMPOSITION AND STRUCTURE - Instruments and techniques BT ATMOSPHERIC COMPOSITION AND STRUCTURE Acoustic properties BT PHYSICAL PROPERTIES OF ROCKS Active experiments BT IONOSPHERE Active perturbation experiments BT SPACE PLASMA PHYSICS Aerosols BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL RT Aerosols and particles Aerosols and particles BT ATMOSPHERIC COMPOSITION AND STRUCTURE RT Aerosols Pollution--urban and regional Africa BT INFORMATION RELATED TO GEOGRAPHIC REGION Air/sea constituent fluxes BT ATMOSPHERIC COMPOSITION AND STRUCTURE RT Air/sea interactions Ocean/atmosphere interactions Ocean/atmosphere interactions Air/sea interactions BT OCEANOGRAPHY: PHYSICAL RT Air/sea constituent fluxes Ocean/atmosphere interactions Airglow and aurora BT ATMOSPHERIC COMPOSITION AND STRUCTURE Analytical modeling BT OCEANOGRAPHY: GENERAL Anoxic environments BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Antarctica BT INFORMATION RELATED TO GEOGRAPHIC REGION Antenna arrays BT ELECTROMAGNETICS Antennas BT ELECTROMAGNETICS Anthropogenic effects BT HYDROLOGY Archeomagnetism BT GEOMAGNETISM AND PALEOMAGNETISM Arctic and Antarctic oceanography BT OCEANOGRAPHY: GENERAL Arctic region BT INFORMATION RELATED TO GEOGRAPHIC REGION Ash deposits BT VOLCANOLOGY Asia BT INFORMATION RELATED TO GEOGRAPHIC REGION Asteroids and meteoroids BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Atlantic Ocean BT INFORMATION RELATED TO GEOGRAPHIC REGION Atmosphere BT GLOBAL CHANGE RT Biosphere/atmosphere interactions Evolution of the atmosphere Atmospheric effects BT VOLCANOLOGY Atmospheric electricity BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Atmospheric propagation BT RADIO SCIENCE Atmospheric sciences BT HISTORY OF GEOPHYSICS Auroral ionosphere BT IONOSPHERE Auroral phenomena BT MAGNETOSPHERIC PHYSICS Australia BT INFORMATION RELATED TO GEOGRAPHIC REGION Bacteria BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Benefit-cost analysis BT POLICY SCIENCES Benthic boundary layers BT OCEANOGRAPHY: GENERAL Benthic processes/benthos BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Biogeochemical cycles BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Biogeochemical processes BT GLOBAL CHANGE Biological effects BT ELECTROMAGNETICS Biomagnetism BT GEOMAGNETISM AND PALEOMAGNETISM Biosphere/atmosphere interactions BT ATMOSPHERIC COMPOSITION AND STRUCTURE RT Atmosphere Body wave propagation BT SEISMOLOGY Boundary layer processes BT METEOROLOGY AND ATMOSPHERIC DYNAMICS CORRECTIONS BT GENERAL OR MISCELLANEOUS Capillary waves BT OCEANOGRAPHY: PHYSICAL Carbon cycling BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Celestial mechanics BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Cenozoic BT INFORMATION RELATED TO GEOLOGIC TIME Chaos BT MATHEMATICAL GEOPHYSICS Charged particle motion and acceleration BT SPACE PLASMA PHYSICS Chemical evolution BT GEOCHEMISTRY Chemical kinetic and photochemical properties BT ATMOSPHERIC COMPOSITION AND STRUCTURE Chemical speciation and complexation BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Chemical tracers BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Chemistry of fresh water BT HYDROLOGY Chromosphere BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Climate and interannual variability BT OCEANOGRAPHY: GENERAL Climate dynamics BT GLOBAL CHANGE Climatology BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Cloud physics and chemistry BT ATMOSPHERIC COMPOSITION AND STRUCTURE Colloids BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Comets BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Comparative planetology BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Composition of the core BT GEOCHEMISTRY Composition of the crust BT GEOCHEMISTRY Composition of the mantle BT GEOCHEMISTRY Computational methods, potential fields BT EXPLORATION GEOPHYSICS Computational methods, seismic BT EXPLORATION GEOPHYSICS Constituent sources and sinks BT ATMOSPHERIC COMPOSITION AND STRUCTURE Continental contractional orogenic belts BT TECTONOPHYSICS Continental crust BT SEISMOLOGY Continental margins and sedimentary basins BT TECTONOPHYSICS Continental neotectonics BT TECTONOPHYSICS Continental shelf processes BT OCEANOGRAPHY: GENERAL Continental structures BT EXPLORATION GEOPHYSICS RT Continental tectonics--extensional Continental tectonics--general Continental tectonics--extensional BT TECTONOPHYSICS RT Continental structures Continental tectonics--general BT TECTONOPHYSICS RT Continental structures Control surveys BT GEODESY AND GRAVITY Convective processes BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Core and mantle BT SEISMOLOGY Core processes BT GEOMAGNETISM AND PALEOMAGNETISM RT Earth's interior--dynamics Coriolis effects BT OCEANOGRAPHY: PHYSICAL Corona BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Coronal holes BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Coronal mass ejections BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Corotating streams BT INTERPLANETARY PHYSICS Corrosion BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Cosmic rays BT INTERPLANETARY PHYSICS Creep and deformation BT MINERAL PHYSICS Crustal movements--interplate BT GEODESY AND GRAVITY Crustal movements--intraplate BT GEODESY AND GRAVITY Crystal chemistry BT MINERALOGY AND PETROLOGY Current systems BT IONOSPHERE Currents BT OCEANOGRAPHY: PHYSICAL Data processing BT EXPLORATION GEOPHYSICS Decision making under uncertainty BT POLICY SCIENCES Defects BT MINERAL PHYSICS Demand estimation BT POLICY SCIENCES Dendrochronology BT OCEANOGRAPHY: GENERAL Descriptive and regional oceanography BT OCEANOGRAPHY: GENERAL Descriptive mineralogy BT MINERALOGY AND PETROLOGY Desertification BT HYDROLOGY Diurnal and subdiurnal rotational variations BT GEODESY AND GRAVITY Diurnal, seasonal, and annual cycles BT OCEANOGRAPHY: GENERAL Downhole methods BT EXPLORATION GEOPHYSICS Drought BT HYDROLOGY Dynamics of lithosphere and mantle--general BT TECTONOPHYSICS RT Earth's interior--dynamics Dynamics, convection currents and mantle plumes BT TECTONOPHYSICS Dynamics, gravity and tectonics BT TECTONOPHYSICS Dynamics, seismotectonics BT TECTONOPHYSICS Dynamo theories BT GEOMAGNETISM AND PALEOMAGNETISM ELECTROMAGNETICS NT Antenna arrays Antennas Biological effects Electromagnetic theory ELECTROMAGNETICS - General or miscellaneous ELECTROMAGNETICS - Optics Guided waves Instrumentation and techniques Inverse scattering Measurement and standards Nonlinear electromagnetics Numerical methods Plasmas Random media and rough surfaces Reflectors and feeds Scattering and diffraction Signal processing and adaptive antennas Singularity expansion method Transient and time domain Wave propagation ELECTROMAGNETICS - General or miscellaneous BT ELECTROMAGNETICS ELECTROMAGNETICS - Optics BT ELECTROMAGNETICS EXPLORATION GEOPHYSICS NT Computational methods, potential fields Computational methods, seismic Continental structures Data processing Downhole methods EXPLORATION GEOPHYSICS - General or miscellaneous EXPLORATION GEOPHYSICS - Instruments and techniques EXPLORATION GEOPHYSICS - Remote sensing Gravity methods Magnetic and electrical methods Oceanic structures Radioactivity methods Seismic methods EXPLORATION GEOPHYSICS - General or miscellaneous BT EXPLORATION GEOPHYSICS EXPLORATION GEOPHYSICS - Instruments and techniques BT EXPLORATION GEOPHYSICS EXPLORATION GEOPHYSICS - Remote sensing BT EXPLORATION GEOPHYSICS Earth's interior--composition and state BT GEODESY AND GRAVITY Earth's interior--dynamics BT GEODESY AND GRAVITY RT Core processes Dynamics of lithosphere and mantle--general Earthquake dynamics and mechanics BT SEISMOLOGY Earthquake ground motions and engineering BT SEISMOLOGY Earthquake parameters BT SEISMOLOGY Eastern boundary currents BT OCEANOGRAPHY: PHYSICAL Ecosystems, structure and dynamics BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Eddies and mesoscale processes BT OCEANOGRAPHY: PHYSICAL Education BT PUBLIC ISSUES Ejecta, driver gases, and magnetic clouds BT INTERPLANETARY PHYSICS El Ni¤o BT OCEANOGRAPHY: PHYSICAL Elasticity and anelasticity BT MINERAL PHYSICS Electric fields BT IONOSPHERE Electrical properties BT MINERAL PHYSICS Electro-optics BT RADIO SCIENCE Electromagnetic metrology BT RADIO SCIENCE Electromagnetic noise and interference BT RADIO SCIENCE Electromagnetic theory BT ELECTROMAGNETICS Electrostatic structures BT SPACE PLASMA PHYSICS Energetic particles BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Energetic particles, heliospheric BT INTERPLANETARY PHYSICS Energetic particles, planetary BT INTERPLANETARY PHYSICS Energetic particles, precipitating BT MAGNETOSPHERIC PHYSICS Energetic particles, solar BT INTERPLANETARY PHYSICS Energetic particles, trapped BT MAGNETOSPHERIC PHYSICS Environmental magnetism BT GEOMAGNETISM AND PALEOMAGNETISM Equations of state BT MINERAL PHYSICS Equatorial ionosphere BT IONOSPHERE Equatorial oceanography BT OCEANOGRAPHY: GENERAL Erosion and sedimentation BT HYDROLOGY Erosion and weathering BT PLANETOLOGY: SOLID SURFACE PLANETS Eruption mechanisms BT VOLCANOLOGY Eruption monitoring BT VOLCANOLOGY Estuarine processes BT OCEANOGRAPHY: GENERAL Europe BT INFORMATION RELATED TO GEOGRAPHIC REGION Evapotranspiration BT HYDROLOGY Evolution of the Earth BT TECTONOPHYSICS Evolution of the atmosphere BT ATMOSPHERIC COMPOSITION AND STRUCTURE RT Atmosphere Experimental and mathematical techniques BT SPACE PLASMA PHYSICS Experimental mineralogy and petrology BT MINERALOGY AND PETROLOGY Extraterrestrial materials BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Fine structure and microstructure BT OCEANOGRAPHY: PHYSICAL Flares BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Floods BT HYDROLOGY Folds and folding BT STRUCTURAL GEOLOGY Food chains BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Forecasting BT MAGNETOSPHERIC PHYSICS Fractals and multifractals BT MATHEMATICAL GEOPHYSICS Fracture and flow BT PHYSICAL PROPERTIES OF ROCKS Fractures and faults BT STRUCTURAL GEOLOGY Fronts and jets BT OCEANOGRAPHY: PHYSICAL Frozen ground BT HYDROLOGY Funding BT PUBLIC ISSUES GENERAL OR MISCELLANEOUS NT CORRECTIONS Instruments useful in three or more fields New fields Notices and announcements Techniques applicable in three or more fields GEOCHEMISTRY NT Chemical evolution Composition of the core Composition of the crust Composition of the mantle GEOCHEMISTRY - General or miscellaneous GEOCHEMISTRY - Instruments and techniques Geochronology Isotopic composition/chemistry Low-temperature geochemistry Marine geochemistry Organic geochemistry Planetary geochemistry Trace elements GEOCHEMISTRY - General or miscellaneous BT GEOCHEMISTRY GEOCHEMISTRY - Instruments and techniques BT GEOCHEMISTRY GEODESY AND GRAVITY NT Control surveys Crustal movements--interplate Crustal movements--intraplate Diurnal and subdiurnal rotational variations Earth's interior--composition and state Earth's interior--dynamics GEODESY AND GRAVITY - General or miscellaneous GEODESY AND GRAVITY - Instruments and techniques Geopotential theory and determination Local gravity anomalies and crustal structure Lunar geodesy and gravity Ocean/Earth/atmosphere interactions Photogrammetry Planetary geodesy and gravity Reference systems Regional and global gravity anomalies and Earth structure Rheology of the lithosphere and mantle Rotational variations Satellite orbits Seismic deformations Space geodetic surveys Standards and absolute measurements Terrestrial reference systems Tides--Earth Tides--ocean GEODESY AND GRAVITY - General or miscellaneous BT GEODESY AND GRAVITY GEODESY AND GRAVITY - Instruments and techniques BT GEODESY AND GRAVITY GEOMAGNETISM AND PALEOMAGNETISM NT Archeomagnetism Biomagnetism Core processes Dynamo theories Environmental magnetism Geomagnetic excursions Geomagnetic induction GEOMAGNETISM AND PALEOMAGNETISM - General or miscellaneous GEOMAGNETISM AND PALEOMAGNETISM - Instruments and techniques Magnetic anomaly modeling Magnetic fabrics and anisotropy Magnetic mineralogy and petrology Magnetostratigraphy Paleointensity Paleomagnetic secular variation Paleomagnetism applied to geologic processes Paleomagnetism applied to tectonics Rapid time variations Reference fields Remagnetization Reversals Rock and mineral magnetism Spatial variations Spatial variations attributed to seafloor spreading Time variations--diurnal to secular Time variations--secular and long term GEOMAGNETISM AND PALEOMAGNETISM - General or miscellaneous BT GEOMAGNETISM AND PALEOMAGNETISM GEOMAGNETISM AND PALEOMAGNETISM - Instruments and techniques BT GEOMAGNETISM AND PALEOMAGNETISM GLOBAL CHANGE NT Atmosphere Biogeochemical processes Climate dynamics Geomorphology and weathering GLOBAL CHANGE - General or miscellaneous GLOBAL CHANGE - Impact phenomena GLOBAL CHANGE - Instruments and techniques GLOBAL CHANGE - Remote sensing Oceans Solar variability Solid Earth Water cycles GLOBAL CHANGE - General or miscellaneous BT GLOBAL CHANGE GLOBAL CHANGE - Impact phenomena BT GLOBAL CHANGE GLOBAL CHANGE - Instruments and techniques BT GLOBAL CHANGE GLOBAL CHANGE - Remote sensing BT GLOBAL CHANGE Gases BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Geochemical cycles BT ATMOSPHERIC COMPOSITION AND STRUCTURE Geochemistry BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Geochronology BT GEOCHEMISTRY Geodesy BT HISTORY OF GEOPHYSICS Geomagnetic excursions BT GEOMAGNETISM AND PALEOMAGNETISM Geomagnetic induction BT GEOMAGNETISM AND PALEOMAGNETISM Geomagnetism BT MARINE GEOLOGY AND GEOPHYSICS Geomagnetism and paleomagnetism BT HISTORY OF GEOPHYSICS Geomorphology BT HYDROLOGY RT Geomorphology and weathering Geomorphology and weathering BT GLOBAL CHANGE RT Geomorphology Weathering Geopotential theory and determination BT GEODESY AND GRAVITY Glaciation BT PLANETOLOGY: SOLID SURFACE PLANETS Glaciology BT HYDROLOGY Gravitational fields BT PLANETOLOGY: COMETS AND SMALL BODIES RT Planetary geodesy and gravity Gravity BT MARINE GEOLOGY AND GEOPHYSICS Gravity methods BT EXPLORATION GEOPHYSICS Groundwater hydrology BT HYDROLOGY Groundwater quality BT HYDROLOGY Groundwater transport BT HYDROLOGY Guided waves BT ELECTROMAGNETICS HISTORY OF GEOPHYSICS NT Atmospheric sciences Geodesy Geomagnetism and paleomagnetism HISTORY OF GEOPHYSICS - General or miscellaneous HISTORY OF GEOPHYSICS - Instruments and techniques Hydrology Ocean sciences Planetology Seismology Solar/planetary relationships Tectonophysics Volcanology, geochemistry, and petrology HISTORY OF GEOPHYSICS - General or miscellaneous BT HISTORY OF GEOPHYSICS HISTORY OF GEOPHYSICS - Instruments and techniques BT HISTORY OF GEOPHYSICS HYDROLOGY NT Anthropogenic effects Chemistry of fresh water Desertification Drought Erosion and sedimentation Evapotranspiration Floods Frozen ground Geomorphology Glaciology Groundwater hydrology Groundwater quality Groundwater transport Hydroclimatology Hydrologic budget HYDROLOGY - General or miscellaneous HYDROLOGY - Instruments and techniques HYDROLOGY - Limnology Irrigation Networks Plant ecology Precipitation Reservoirs Runoff and streamflow Snow and ice Soil moisture Stochastic processes Surface water quality Unsaturated zone Water supply Water/energy interactions Weathering Wetlands HYDROLOGY - General or miscellaneous BT HYDROLOGY HYDROLOGY - Instruments and techniques BT HYDROLOGY HYDROLOGY - Limnology BT HYDROLOGY Heat flow BT MARINE GEOLOGY AND GEOPHYSICS Heat generation and transport BT TECTONOPHYSICS Heliopause and solar wind termination BT INTERPLANETARY PHYSICS Helioseismology BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY High-pressure behavior BT MINERAL PHYSICS Higher marine organisms BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Hydroclimatology BT HYDROLOGY Hydrography BT OCEANOGRAPHY: PHYSICAL Hydrologic budget BT HYDROLOGY Hydrology BT HISTORY OF GEOPHYSICS Hydrothermal systems BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Hypoxic environments BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL INFORMATION RELATED TO GEOGRAPHIC REGION NT Africa Antarctica Arctic region Asia Atlantic Ocean Australia Europe Indian Ocean INFORMATION RELATED TO GEOGRAPHIC REGION - General or miscellaneous Large bodies of water North America Pacific Ocean South America INFORMATION RELATED TO GEOGRAPHIC REGION - General or miscellaneous BT INFORMATION RELATED TO GEOGRAPHIC REGION INFORMATION RELATED TO GEOLOGIC TIME NT Cenozoic INFORMATION RELATED TO GEOLOGIC TIME - General or miscellaneous Mesozoic Paleozoic Precambrian INFORMATION RELATED TO GEOLOGIC TIME - General or miscellaneous BT INFORMATION RELATED TO GEOLOGIC TIME INTERPLANETARY PHYSICS NT Corotating streams Cosmic rays Ejecta, driver gases, and magnetic clouds Energetic particles, heliospheric Energetic particles, planetary Energetic particles, solar Heliopause and solar wind termination Interplanetary dust Interplanetary magnetic fields INTERPLANETARY PHYSICS - Discontinuities INTERPLANETARY PHYSICS - General or miscellaneous INTERPLANETARY PHYSICS - Instruments and techniques INTERPLANETARY PHYSICS - Neutral particles Interplanetary shocks Interstellar gas MHD waves and turbulence Pickup ions Planetary bow shocks Plasma waves and turbulence Solar cycle variations Solar wind plasma Sources of the solar wind INTERPLANETARY PHYSICS - Discontinuities BT INTERPLANETARY PHYSICS INTERPLANETARY PHYSICS - General or miscellaneous BT INTERPLANETARY PHYSICS INTERPLANETARY PHYSICS - Instruments and techniques BT INTERPLANETARY PHYSICS INTERPLANETARY PHYSICS - Neutral particles BT INTERPLANETARY PHYSICS IONOSPHERE NT Active experiments Auroral ionosphere Current systems Electric fields Equatorial ionosphere Ion chemistry and composition Ionization mechanisms IONOSPHERE - General or miscellaneous IONOSPHERE - Instruments and techniques IONOSPHERE - Plasma convection IONOSPHERE - Plasma waves and instabilities IONOSPHERE - Wave/particle interactions Ionosphere/atmosphere interactions Ionosphere/magnetosphere interactions Ionospheric disturbances Ionospheric dynamics Ionospheric irregularities Midlatitude ionosphere Modeling and forecasting Particle acceleration Particle precipitation Planetary ionospheres Plasma temperature and density Polar cap ionosphere Solar radiation and cosmic ray effects Topside ionosphere IONOSPHERE - General or miscellaneous BT IONOSPHERE IONOSPHERE - Instruments and techniques BT IONOSPHERE IONOSPHERE - Plasma convection BT IONOSPHERE IONOSPHERE - Plasma waves and instabilities BT IONOSPHERE IONOSPHERE - Wave/particle interactions BT IONOSPHERE Ice BT PLANETOLOGY: COMETS AND SMALL BODIES Ice mechanics and air/sea/ice exchange processes BT OCEANOGRAPHY: PHYSICAL Igneous petrology BT MINERALOGY AND PETROLOGY Impact phenomena BT PLANETOLOGY: SOLID SURFACE PLANETS RT Planetary geodesy and gravity Indian Ocean BT INFORMATION RELATED TO GEOGRAPHIC REGION Inorganic marine chemistry BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL RT Marine geochemistry Institutions BT POLICY SCIENCES Instrumentation and techniques BT ELECTROMAGNETICS Instruments useful in three or more fields BT GENERAL OR MISCELLANEOUS Interactions with solar wind plasma and fields BT PLANETOLOGY: COMETS AND SMALL BODIES Interferometry BT RADIO SCIENCE Internal and inertial waves BT OCEANOGRAPHY: PHYSICAL Interplanetary dust BT INTERPLANETARY PHYSICS Interplanetary magnetic fields BT INTERPLANETARY PHYSICS Interplanetary shocks BT INTERPLANETARY PHYSICS Interstellar gas BT INTERPLANETARY PHYSICS Inverse scattering BT ELECTROMAGNETICS Inverse theory BT MATHEMATICAL GEOPHYSICS Ion chemistry and composition BT IONOSPHERE RT Ion chemistry of the atmosphere Ion chemistry of the atmosphere BT ATMOSPHERIC COMPOSITION AND STRUCTURE RT Ion chemistry and composition Ionosphere/atmosphere interactions Ionization mechanisms BT IONOSPHERE Ionization processes BT SPACE PLASMA PHYSICS Ionosphere/atmosphere interactions BT IONOSPHERE RT Ion chemistry of the atmosphere Ionosphere/magnetosphere interactions BT IONOSPHERE Ionospheres--composition and chemistry BT PLANETOLOGY: COMETS AND SMALL BODIES RT Planetary ionospheres Ionospheres--evolution BT PLANETOLOGY: COMETS AND SMALL BODIES RT Planetary ionospheres Ionospheres--structure and dynamics BT PLANETOLOGY: COMETS AND SMALL BODIES RT Planetary ionospheres Ionospheric disturbances BT IONOSPHERE Ionospheric dynamics BT IONOSPHERE Ionospheric irregularities BT IONOSPHERE Ionospheric physics BT RADIO SCIENCE Ionospheric propagation BT RADIO SCIENCE Irrigation BT HYDROLOGY Isotopic composition/chemistry BT GEOCHEMISTRY Jovian satellites BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Jupiter BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Kinetic and MHD theory BT SPACE PLASMA PHYSICS Laboratory studies BT SPACE PLASMA PHYSICS Land/atmosphere interactions BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Large bodies of water BT INFORMATION RELATED TO GEOGRAPHIC REGION Lava rheology and morphology BT VOLCANOLOGY Legislation and regulation BT PUBLIC ISSUES Legislation and regulations BT POLICY SCIENCES Lightning BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Lithosphere and upper mantle BT SEISMOLOGY Littoral processes BT MARINE GEOLOGY AND GEOPHYSICS Local crustal structure BT STRUCTURAL GEOLOGY Local gravity anomalies and crustal structure BT GEODESY AND GRAVITY Low-temperature geochemistry BT GEOCHEMISTRY Lunar geodesy and gravity BT GEODESY AND GRAVITY MAGNETOSPHERIC PHYSICS NT Auroral phenomena Energetic particles, precipitating Energetic particles, trapped Forecasting Magnetopause, cusp, and boundary layers Magnetosheath Magnetosphere interactions with satellites and rings Magnetosphere--inner Magnetosphere--outer Magnetosphere/ionosphere interactions Magnetospheric configuration and dynamics MAGNETOSPHERIC PHYSICS - General or miscellaneous MAGNETOSPHERIC PHYSICS - Instruments and techniques MAGNETOSPHERIC PHYSICS - Numerical modeling MAGNETOSPHERIC PHYSICS - Plasma convection MAGNETOSPHERIC PHYSICS - Plasma waves and instabilities Magnetotail Magnetotail boundary layers MHD waves and instabilities Planetary magnetospheres Plasma sheet Plasmasphere Polar cap phenomena Ring current Solar wind interactions with unmagnetized bodies Solar wind/magnetosphere interactions Storms and substorms MAGNETOSPHERIC PHYSICS - General or miscellaneous BT MAGNETOSPHERIC PHYSICS MAGNETOSPHERIC PHYSICS - Instruments and techniques BT MAGNETOSPHERIC PHYSICS MAGNETOSPHERIC PHYSICS - Numerical modeling BT MAGNETOSPHERIC PHYSICS MAGNETOSPHERIC PHYSICS - Plasma convection BT MAGNETOSPHERIC PHYSICS MAGNETOSPHERIC PHYSICS - Plasma waves and instabilities BT MAGNETOSPHERIC PHYSICS MARINE GEOLOGY AND GEOPHYSICS NT Geomagnetism Gravity Heat flow Littoral processes MARINE GEOLOGY AND GEOPHYSICS - General or miscellaneous MARINE GEOLOGY AND GEOPHYSICS - Instruments and techniques Marine sediments--processes and transport Marine seismics Micropaleontology Midocean ridge processes Plate tectonics Seafloor morphology and bottom photography MARINE GEOLOGY AND GEOPHYSICS - General or miscellaneous BT MARINE GEOLOGY AND GEOPHYSICS MARINE GEOLOGY AND GEOPHYSICS - Instruments and techniques BT MARINE GEOLOGY AND GEOPHYSICS MATHEMATICAL GEOPHYSICS NT Chaos Fractals and multifractals Inverse theory MATHEMATICAL GEOPHYSICS - General or miscellaneous MATHEMATICAL GEOPHYSICS - Modeling Nonlinear dynamics Numerical solutions MATHEMATICAL GEOPHYSICS - General or miscellaneous BT MATHEMATICAL GEOPHYSICS MATHEMATICAL GEOPHYSICS - Modeling BT MATHEMATICAL GEOPHYSICS METEOROLOGY AND ATMOSPHERIC DYNAMICS NT Atmospheric electricity Boundary layer processes Climatology Convective processes Land/atmosphere interactions Lightning Mesoscale meteorology Mesospheric dynamics METEOROLOGY AND ATMOSPHERIC DYNAMICS - General circulation METEOROLOGY AND ATMOSPHERIC DYNAMICS - General or miscellaneous METEOROLOGY AND ATMOSPHERIC DYNAMICS - Instruments and techniques METEOROLOGY AND ATMOSPHERIC DYNAMICS - Remote sensing METEOROLOGY AND ATMOSPHERIC DYNAMICS - Turbulence Middle atmosphere dynamics Numerical modeling and data assimilation Ocean/atmosphere interactions Paleoclimatology Planetary meteorology Polar meteorology Radiative processes Stratosphere/troposphere interactions Synoptic-scale meteorology Theoretical modeling Thermospheric dynamics Tropical meteorology Waves and tides METEOROLOGY AND ATMOSPHERIC DYNAMICS - General circulation BT METEOROLOGY AND ATMOSPHERIC DYNAMICS METEOROLOGY AND ATMOSPHERIC DYNAMICS - General or miscellaneous BT METEOROLOGY AND ATMOSPHERIC DYNAMICS METEOROLOGY AND ATMOSPHERIC DYNAMICS - Instruments and techniques BT METEOROLOGY AND ATMOSPHERIC DYNAMICS METEOROLOGY AND ATMOSPHERIC DYNAMICS - Remote sensing BT METEOROLOGY AND ATMOSPHERIC DYNAMICS METEOROLOGY AND ATMOSPHERIC DYNAMICS - Turbulence BT METEOROLOGY AND ATMOSPHERIC DYNAMICS MHD waves and instabilities BT MAGNETOSPHERIC PHYSICS MHD waves and turbulence BT INTERPLANETARY PHYSICS MINERAL PHYSICS NT Creep and deformation Defects Elasticity and anelasticity Electrical properties Equations of state High-pressure behavior MINERAL PHYSICS - General or miscellaneous MINERAL PHYSICS - Instruments and techniques NMR, Mossbauer spectroscopy, and other magnetic techniques Optical, infrared, and Raman spectroscopy Physical thermodynamics Shock wave experiments Surfaces and interfaces Thermal expansivity X ray, neutron, and electron spectroscopy and diffraction MINERAL PHYSICS - General or miscellaneous BT MINERAL PHYSICS MINERAL PHYSICS - Instruments and techniques BT MINERAL PHYSICS MINERALOGY AND PETROLOGY NT Crystal chemistry Descriptive mineralogy Experimental mineralogy and petrology Igneous petrology Major element composition Metamorphic petrology Meteorites Mineral occurrences and deposits MINERALOGY AND PETROLOGY - General or miscellaneous MINERALOGY AND PETROLOGY - Instruments and techniques Minor and trace element composition Planetary mineralogy and petrology Sedimentary petrology MINERALOGY AND PETROLOGY - General or miscellaneous BT MINERALOGY AND PETROLOGY MINERALOGY AND PETROLOGY - Instruments and techniques BT MINERALOGY AND PETROLOGY Magma migration BT VOLCANOLOGY Magnetic and electrical methods BT EXPLORATION GEOPHYSICS Magnetic and electrical properties BT PHYSICAL PROPERTIES OF ROCKS Magnetic anomaly modeling BT GEOMAGNETISM AND PALEOMAGNETISM Magnetic fabrics and anisotropy BT GEOMAGNETISM AND PALEOMAGNETISM Magnetic fields BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Magnetic mineralogy and petrology BT GEOMAGNETISM AND PALEOMAGNETISM Magnetic reconnection BT SPACE PLASMA PHYSICS Magnetopause, cusp, and boundary layers BT MAGNETOSPHERIC PHYSICS Magnetosheath BT MAGNETOSPHERIC PHYSICS Magnetosphere interactions with satellites and rings BT MAGNETOSPHERIC PHYSICS Magnetosphere--inner BT MAGNETOSPHERIC PHYSICS Magnetosphere--outer BT MAGNETOSPHERIC PHYSICS Magnetosphere/ionosphere interactions BT MAGNETOSPHERIC PHYSICS Magnetospheric configuration and dynamics BT MAGNETOSPHERIC PHYSICS Magnetospheric physics BT RADIO SCIENCE Magnetostratigraphy BT GEOMAGNETISM AND PALEOMAGNETISM Magnetotail BT MAGNETOSPHERIC PHYSICS Magnetotail boundary layers BT MAGNETOSPHERIC PHYSICS Major element composition BT MINERALOGY AND PETROLOGY Marginal and semienclosed seas BT OCEANOGRAPHY: GENERAL Marine geochemistry BT GEOCHEMISTRY RT Inorganic marine chemistry Organic marine chemistry Marine meteorology BT OCEANOGRAPHY: GENERAL Marine pollution BT OCEANOGRAPHY: GENERAL Marine sediments--processes and transport BT MARINE GEOLOGY AND GEOPHYSICS Marine seismics BT MARINE GEOLOGY AND GEOPHYSICS Mars BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Martian satellites BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Measurement and standards BT ELECTROMAGNETICS Mechanics BT STRUCTURAL GEOLOGY Mercury BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Mesoscale meteorology BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Mesoscopic fabrics BT STRUCTURAL GEOLOGY Mesospheric dynamics BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Mesozoic BT INFORMATION RELATED TO GEOLOGIC TIME Metamorphic petrology BT MINERALOGY AND PETROLOGY Meteorites BT MINERALOGY AND PETROLOGY Meteorites and tektites BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Meteors BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Microbiology BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Micropaleontology BT MARINE GEOLOGY AND GEOPHYSICS Microstructure BT PHYSICAL PROPERTIES OF ROCKS Microstructures BT STRUCTURAL GEOLOGY Middle atmosphere dynamics BT METEOROLOGY AND ATMOSPHERIC DYNAMICS RT Middle atmosphere--constituent transport and chemistry Middle atmosphere--energy deposition Middle atmosphere--composition and chemistry BT ATMOSPHERIC COMPOSITION AND STRUCTURE Middle atmosphere--constituent transport and chemistry BT ATMOSPHERIC COMPOSITION AND STRUCTURE RT Middle atmosphere dynamics Middle atmosphere--energy deposition BT ATMOSPHERIC COMPOSITION AND STRUCTURE RT Middle atmosphere dynamics Midlatitude ionosphere BT IONOSPHERE Midocean ridge processes BT MARINE GEOLOGY AND GEOPHYSICS Mineral occurrences and deposits BT MINERALOGY AND PETROLOGY Minor and trace element composition BT MINERALOGY AND PETROLOGY Modeling and forecasting BT IONOSPHERE Moon BT PLANETOLOGY: SOLAR SYSTEM OBJECTS NMR, Mossbauer spectroscopy, and other magnetic techniques BT MINERAL PHYSICS Nearshore processes BT OCEANOGRAPHY: PHYSICAL Neptune BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Neptunian satellites BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Networks BT HYDROLOGY New fields BT GENERAL OR MISCELLANEOUS Nonlinear dynamics BT MATHEMATICAL GEOPHYSICS Nonlinear electromagnetics BT ELECTROMAGNETICS North America BT INFORMATION RELATED TO GEOGRAPHIC REGION Notices and announcements BT GENERAL OR MISCELLANEOUS Nuclear explosion seismology BT SEISMOLOGY Numerical methods BT ELECTROMAGNETICS Numerical modeling and data assimilation BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Numerical simulation studies BT SPACE PLASMA PHYSICS Numerical solutions BT MATHEMATICAL GEOPHYSICS Nutrients and nutrient cycling BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL NT Aerosols Anoxic environments Bacteria Benthic processes/benthos Biogeochemical cycles Carbon cycling Chemical speciation and complexation Chemical tracers Colloids Corrosion Ecosystems, structure and dynamics Food chains Gases Geochemistry Higher marine organisms Hydrothermal systems Hypoxic environments Inorganic marine chemistry Microbiology Nutrients and nutrient cycling OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL - General or miscellaneous OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL - Instruments and techniques OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL - Modeling OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL - Optics Organic marine chemistry Oxidation/reduction reactions Photochemistry Photosynthesis Physicochemical properties Plankton Pollution Radioactivity and radioisotopes Sedimentation Sorptive scavenging Stable isotopes Trophodynamics OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL - General or miscellaneous BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL - Instruments and techniques BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL - Modeling BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL - Optics BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL OCEANOGRAPHY: GENERAL NT Analytical modeling Arctic and Antarctic oceanography Benthic boundary layers Climate and interannual variability Continental shelf processes Dendrochronology Descriptive and regional oceanography Diurnal, seasonal, and annual cycles Equatorial oceanography Estuarine processes Marginal and semienclosed seas Marine meteorology Marine pollution Ocean acoustics Ocean prediction OCEANOGRAPHY: GENERAL - General or miscellaneous OCEANOGRAPHY: GENERAL - Instruments and techniques OCEANOGRAPHY: GENERAL - Limnology OCEANOGRAPHY: GENERAL - Numerical modeling Paleoceanography Physical and chemical properties of seawater Remote sensing and electromagnetic processes Upwelling and convergences Water masses OCEANOGRAPHY: GENERAL - General or miscellaneous BT OCEANOGRAPHY: GENERAL OCEANOGRAPHY: GENERAL - Instruments and techniques BT OCEANOGRAPHY: GENERAL OCEANOGRAPHY: GENERAL - Limnology BT OCEANOGRAPHY: GENERAL OCEANOGRAPHY: GENERAL - Numerical modeling BT OCEANOGRAPHY: GENERAL OCEANOGRAPHY: PHYSICAL NT Air/sea interactions Capillary waves Coriolis effects Currents Eastern boundary currents Eddies and mesoscale processes El Ni¤o Fine structure and microstructure Fronts and jets Hydrography Ice mechanics and air/sea/ice exchange processes Internal and inertial waves Nearshore processes Ocean fog and aerosols Ocean optics OCEANOGRAPHY: PHYSICAL - General circulation OCEANOGRAPHY: PHYSICAL - General or miscellaneous OCEANOGRAPHY: PHYSICAL - Instruments and techniques Sea level variations Sediment transport Surface waves and tides Tsunamis and storm surges Turbulence, diffusion, and mixing processes Upper ocean processes Western boundary currents OCEANOGRAPHY: PHYSICAL - General circulation BT OCEANOGRAPHY: PHYSICAL OCEANOGRAPHY: PHYSICAL - General or miscellaneous BT OCEANOGRAPHY: PHYSICAL OCEANOGRAPHY: PHYSICAL - Instruments and techniques BT OCEANOGRAPHY: PHYSICAL Ocean acoustics BT OCEANOGRAPHY: GENERAL Ocean fog and aerosols BT OCEANOGRAPHY: PHYSICAL Ocean optics BT OCEANOGRAPHY: PHYSICAL Ocean prediction BT OCEANOGRAPHY: GENERAL Ocean sciences BT HISTORY OF GEOPHYSICS Ocean/Earth/atmosphere interactions BT GEODESY AND GRAVITY Ocean/atmosphere interactions BT METEOROLOGY AND ATMOSPHERIC DYNAMICS RT Air/sea constituent fluxes Air/sea constituent fluxes Air/sea interactions Oceanic crust BT SEISMOLOGY Oceanic structures BT EXPLORATION GEOPHYSICS Oceans BT GLOBAL CHANGE Optical, infrared, and Raman spectroscopy BT MINERAL PHYSICS Organic geochemistry BT GEOCHEMISTRY Organic marine chemistry BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL RT Marine geochemistry Oxidation/reduction reactions BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL PHYSICAL PROPERTIES OF ROCKS NT Acoustic properties Fracture and flow Magnetic and electrical properties Microstructure Permeability and porosity PHYSICAL PROPERTIES OF ROCKS - General or miscellaneous PHYSICAL PROPERTIES OF ROCKS - Instruments and techniques Plasticity, diffusion, and creep Thermal properties Transport properties Wave attenuation PHYSICAL PROPERTIES OF ROCKS - General or miscellaneous BT PHYSICAL PROPERTIES OF ROCKS PHYSICAL PROPERTIES OF ROCKS - Instruments and techniques BT PHYSICAL PROPERTIES OF ROCKS PLANETOLOGY: COMETS AND SMALL BODIES NT Gravitational fields Ice Interactions with solar wind plasma and fields Ionospheres--composition and chemistry Ionospheres--evolution Ionospheres--structure and dynamics Physics and chemistry of materials PLANETOLOGY: COMETS AND SMALL BODIES - Atmospheres--composition and chemistry PLANETOLOGY: COMETS AND SMALL BODIES - Atmospheres--evolution PLANETOLOGY: COMETS AND SMALL BODIES - Atmospheres--structure and dynamics PLANETOLOGY: COMETS AND SMALL BODIES - Composition PLANETOLOGY: COMETS AND SMALL BODIES - Dust PLANETOLOGY: COMETS AND SMALL BODIES - General or miscellaneous PLANETOLOGY: COMETS AND SMALL BODIES - Impact phenomena PLANETOLOGY: COMETS AND SMALL BODIES - Instruments and techniques PLANETOLOGY: COMETS AND SMALL BODIES - Magnetic fields and magnetism PLANETOLOGY: COMETS AND SMALL BODIES - Orbital and rotational dynamics PLANETOLOGY: COMETS AND SMALL BODIES - Origin and evolution PLANETOLOGY: COMETS AND SMALL BODIES - Remote sensing Plasma and MHD instabilities Radiation and spectra Satellites Surfaces and interiors PLANETOLOGY: COMETS AND SMALL BODIES - Atmospheres--composition and chemistry BT PLANETOLOGY: COMETS AND SMALL BODIES RT Planetary geochemistry PLANETOLOGY: COMETS AND SMALL BODIES - Atmospheres--evolution BT PLANETOLOGY: COMETS AND SMALL BODIES PLANETOLOGY: COMETS AND SMALL BODIES - Atmospheres--structure and dynamics BT PLANETOLOGY: COMETS AND SMALL BODIES PLANETOLOGY: COMETS AND SMALL BODIES - Composition BT PLANETOLOGY: COMETS AND SMALL BODIES RT Planetary geochemistry PLANETOLOGY: COMETS AND SMALL BODIES - Dust BT PLANETOLOGY: COMETS AND SMALL BODIES PLANETOLOGY: COMETS AND SMALL BODIES - General or miscellaneous BT PLANETOLOGY: COMETS AND SMALL BODIES PLANETOLOGY: COMETS AND SMALL BODIES - Impact phenomena BT PLANETOLOGY: COMETS AND SMALL BODIES PLANETOLOGY: COMETS AND SMALL BODIES - Instruments and techniques BT PLANETOLOGY: COMETS AND SMALL BODIES PLANETOLOGY: COMETS AND SMALL BODIES - Magnetic fields and magnetism BT PLANETOLOGY: COMETS AND SMALL BODIES RT Planetary magnetospheres PLANETOLOGY: COMETS AND SMALL BODIES - Orbital and rotational dynamics BT PLANETOLOGY: COMETS AND SMALL BODIES PLANETOLOGY: COMETS AND SMALL BODIES - Origin and evolution BT PLANETOLOGY: COMETS AND SMALL BODIES PLANETOLOGY: COMETS AND SMALL BODIES - Remote sensing BT PLANETOLOGY: COMETS AND SMALL BODIES PLANETOLOGY: SOLAR SYSTEM OBJECTS NT Asteroids and meteoroids Comets Comparative planetology Extraterrestrial materials Jovian satellites Jupiter Mars Martian satellites Mercury Meteorites and tektites Meteors Moon Neptune Neptunian satellites Planetary rings PLANETOLOGY: SOLAR SYSTEM OBJECTS - Dust PLANETOLOGY: SOLAR SYSTEM OBJECTS - General or miscellaneous PLANETOLOGY: SOLAR SYSTEM OBJECTS - Instruments and techniques Pluto and satellites Saturn Saturnian satellites Stellar planetary systems Uranian satellites Uranus Venus PLANETOLOGY: SOLAR SYSTEM OBJECTS - Dust BT PLANETOLOGY: SOLAR SYSTEM OBJECTS PLANETOLOGY: SOLAR SYSTEM OBJECTS - General or miscellaneous BT PLANETOLOGY: SOLAR SYSTEM OBJECTS PLANETOLOGY: SOLAR SYSTEM OBJECTS - Instruments and techniques BT PLANETOLOGY: SOLAR SYSTEM OBJECTS PLANETOLOGY: FLUID PLANETS NT PLANETOLOGY: FLUID PLANETS - Atmospheres--composition and chemistry PLANETOLOGY: FLUID PLANETS - Atmospheres--evolution PLANETOLOGY: FLUID PLANETS - Atmospheres--structure and dynamics PLANETOLOGY: FLUID PLANETS - Composition PLANETOLOGY: FLUID PLANETS - General or miscellaneous PLANETOLOGY: FLUID PLANETS - Gravitational fields PLANETOLOGY: FLUID PLANETS - Impact phenomena PLANETOLOGY: FLUID PLANETS - Instruments and techniques PLANETOLOGY: FLUID PLANETS - Interactions with particles and fields PLANETOLOGY: FLUID PLANETS - Interiors PLANETOLOGY: FLUID PLANETS - Ionospheres PLANETOLOGY: FLUID PLANETS - Magnetic fields and magnetism PLANETOLOGY: FLUID PLANETS - Magnetospheres PLANETOLOGY: FLUID PLANETS - Meteorology PLANETOLOGY: FLUID PLANETS - Orbital and rotational dynamics PLANETOLOGY: FLUID PLANETS - Origin and evolution PLANETOLOGY: FLUID PLANETS - Physical properties of materials PLANETOLOGY: FLUID PLANETS - Remote sensing PLANETOLOGY: FLUID PLANETS - Rings and dust Surfaces Tidal forces Tori and exospheres PLANETOLOGY: FLUID PLANETS - Atmospheres--composition and chemistry BT PLANETOLOGY: FLUID PLANETS RT Planetary atmospheres Planetary geochemistry PLANETOLOGY: FLUID PLANETS - Atmospheres--evolution BT PLANETOLOGY: FLUID PLANETS RT Planetary atmospheres PLANETOLOGY: FLUID PLANETS - Atmospheres--structure and dynamics BT PLANETOLOGY: FLUID PLANETS RT Planetary atmospheres PLANETOLOGY: FLUID PLANETS - Composition BT PLANETOLOGY: FLUID PLANETS RT Planetary geochemistry PLANETOLOGY: FLUID PLANETS - General or miscellaneous BT PLANETOLOGY: FLUID PLANETS PLANETOLOGY: FLUID PLANETS - Gravitational fields BT PLANETOLOGY: FLUID PLANETS RT Planetary geodesy and gravity PLANETOLOGY: FLUID PLANETS - Impact phenomena BT PLANETOLOGY: FLUID PLANETS PLANETOLOGY: FLUID PLANETS - Instruments and techniques BT PLANETOLOGY: FLUID PLANETS PLANETOLOGY: FLUID PLANETS - Interactions with particles and fields BT PLANETOLOGY: FLUID PLANETS PLANETOLOGY: FLUID PLANETS - Interiors BT PLANETOLOGY: FLUID PLANETS RT Planetary interiors PLANETOLOGY: FLUID PLANETS - Ionospheres BT PLANETOLOGY: FLUID PLANETS RT Planetary ionospheres PLANETOLOGY: FLUID PLANETS - Magnetic fields and magnetism BT PLANETOLOGY: FLUID PLANETS PLANETOLOGY: FLUID PLANETS - Magnetospheres BT PLANETOLOGY: FLUID PLANETS RT Planetary magnetospheres PLANETOLOGY: FLUID PLANETS - Meteorology BT PLANETOLOGY: FLUID PLANETS RT Planetary meteorology PLANETOLOGY: FLUID PLANETS - Orbital and rotational dynamics BT PLANETOLOGY: FLUID PLANETS PLANETOLOGY: FLUID PLANETS - Origin and evolution BT PLANETOLOGY: FLUID PLANETS PLANETOLOGY: FLUID PLANETS - Physical properties of materials BT PLANETOLOGY: FLUID PLANETS PLANETOLOGY: FLUID PLANETS - Remote sensing BT PLANETOLOGY: FLUID PLANETS PLANETOLOGY: FLUID PLANETS - Rings and dust BT PLANETOLOGY: FLUID PLANETS PLANETOLOGY: SOLID SURFACE PLANETS NT Erosion and weathering Glaciation Impact phenomena PLANETOLOGY: SOLID SURFACE PLANETS - Atmospheres--composition and chemistry PLANETOLOGY: SOLID SURFACE PLANETS - Atmospheres--evolution PLANETOLOGY: SOLID SURFACE PLANETS - Atmospheres--structure and dynamics PLANETOLOGY: SOLID SURFACE PLANETS - Composition PLANETOLOGY: SOLID SURFACE PLANETS - General or miscellaneous PLANETOLOGY: SOLID SURFACE PLANETS - Gravitational fields PLANETOLOGY: SOLID SURFACE PLANETS - Instruments and techniques PLANETOLOGY: SOLID SURFACE PLANETS - Interactions with particles and fields PLANETOLOGY: SOLID SURFACE PLANETS - Interiors PLANETOLOGY: SOLID SURFACE PLANETS - Ionospheres PLANETOLOGY: SOLID SURFACE PLANETS - Magnetic fields and magnetism PLANETOLOGY: SOLID SURFACE PLANETS - Magnetospheres PLANETOLOGY: SOLID SURFACE PLANETS - Meteorology PLANETOLOGY: SOLID SURFACE PLANETS - Orbital and rotational dynamics PLANETOLOGY: SOLID SURFACE PLANETS - Origin and evolution PLANETOLOGY: SOLID SURFACE PLANETS - Physical properties of materials PLANETOLOGY: SOLID SURFACE PLANETS - Remote sensing PLANETOLOGY: SOLID SURFACE PLANETS - Rings and dust Polar regions Surface materials and properties Tectonics Volcanism PLANETOLOGY: SOLID SURFACE PLANETS - Atmospheres--composition and chemistry BT PLANETOLOGY: SOLID SURFACE PLANETS RT Planetary atmospheres Planetary geochemistry PLANETOLOGY: SOLID SURFACE PLANETS - Atmospheres--evolution BT PLANETOLOGY: SOLID SURFACE PLANETS RT Planetary atmospheres PLANETOLOGY: SOLID SURFACE PLANETS - Atmospheres--structure and dynamics BT PLANETOLOGY: SOLID SURFACE PLANETS RT Planetary atmospheres PLANETOLOGY: SOLID SURFACE PLANETS - Composition BT PLANETOLOGY: SOLID SURFACE PLANETS RT Planetary geochemistry PLANETOLOGY: SOLID SURFACE PLANETS - General or miscellaneous BT PLANETOLOGY: SOLID SURFACE PLANETS PLANETOLOGY: SOLID SURFACE PLANETS - Gravitational fields BT PLANETOLOGY: SOLID SURFACE PLANETS PLANETOLOGY: SOLID SURFACE PLANETS - Instruments and techniques BT PLANETOLOGY: SOLID SURFACE PLANETS PLANETOLOGY: SOLID SURFACE PLANETS - Interactions with particles and fields BT PLANETOLOGY: SOLID SURFACE PLANETS PLANETOLOGY: SOLID SURFACE PLANETS - Interiors BT PLANETOLOGY: SOLID SURFACE PLANETS RT Planetary interiors PLANETOLOGY: SOLID SURFACE PLANETS - Ionospheres BT PLANETOLOGY: SOLID SURFACE PLANETS RT Planetary ionospheres PLANETOLOGY: SOLID SURFACE PLANETS - Magnetic fields and magnetism BT PLANETOLOGY: SOLID SURFACE PLANETS PLANETOLOGY: SOLID SURFACE PLANETS - Magnetospheres BT PLANETOLOGY: SOLID SURFACE PLANETS RT Planetary magnetospheres PLANETOLOGY: SOLID SURFACE PLANETS - Meteorology BT PLANETOLOGY: SOLID SURFACE PLANETS RT Planetary meteorology PLANETOLOGY: SOLID SURFACE PLANETS - Orbital and rotational dynamics BT PLANETOLOGY: SOLID SURFACE PLANETS PLANETOLOGY: SOLID SURFACE PLANETS - Origin and evolution BT PLANETOLOGY: SOLID SURFACE PLANETS PLANETOLOGY: SOLID SURFACE PLANETS - Physical properties of materials BT PLANETOLOGY: SOLID SURFACE PLANETS PLANETOLOGY: SOLID SURFACE PLANETS - Remote sensing BT PLANETOLOGY: SOLID SURFACE PLANETS PLANETOLOGY: SOLID SURFACE PLANETS - Rings and dust BT PLANETOLOGY: SOLID SURFACE PLANETS POLICY SCIENCES NT Benefit-cost analysis Decision making under uncertainty Demand estimation Institutions Legislation and regulations POLICY SCIENCES - General or miscellaneous Project evaluation Regional planning System design System operation and management POLICY SCIENCES - General or miscellaneous BT POLICY SCIENCES PUBLIC ISSUES NT Education Funding Legislation and regulation PUBLIC ISSUES - General or miscellaneous Science policy Workforce PUBLIC ISSUES - General or miscellaneous BT PUBLIC ISSUES Pacific Ocean BT INFORMATION RELATED TO GEOGRAPHIC REGION Paleoceanography BT OCEANOGRAPHY: GENERAL Paleoclimatology BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Paleointensity BT GEOMAGNETISM AND PALEOMAGNETISM Paleomagnetic secular variation BT GEOMAGNETISM AND PALEOMAGNETISM Paleomagnetism applied to geologic processes BT GEOMAGNETISM AND PALEOMAGNETISM Paleomagnetism applied to tectonics BT GEOMAGNETISM AND PALEOMAGNETISM Paleoseismology BT SEISMOLOGY Paleozoic BT INFORMATION RELATED TO GEOLOGIC TIME Particle acceleration BT IONOSPHERE Particle precipitation BT IONOSPHERE Permeability and porosity BT PHYSICAL PROPERTIES OF ROCKS Photochemistry BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Photogrammetry BT GEODESY AND GRAVITY Photosphere BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Photosynthesis BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Physical and chemical properties of seawater BT OCEANOGRAPHY: GENERAL Physical thermodynamics BT MINERAL PHYSICS Physicochemical properties BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Physics and chemistry of magma bodies BT VOLCANOLOGY Physics and chemistry of materials BT PLANETOLOGY: COMETS AND SMALL BODIES Physics of magma and magma bodies BT TECTONOPHYSICS Pickup ions BT INTERPLANETARY PHYSICS Planetary atmospheres BT ATMOSPHERIC COMPOSITION AND STRUCTURE RT PLANETOLOGY: FLUID PLANETS - Atmospheres--composition and chemistry PLANETOLOGY: FLUID PLANETS - Atmospheres--evolution PLANETOLOGY: FLUID PLANETS - Atmospheres--structure and dynamics PLANETOLOGY: SOLID SURFACE PLANETS - Atmospheres--composition and chemistry PLANETOLOGY: SOLID SURFACE PLANETS - Atmospheres--evolution PLANETOLOGY: SOLID SURFACE PLANETS - Atmospheres--structure and dynamics Planetary bow shocks BT INTERPLANETARY PHYSICS Planetary geochemistry BT GEOCHEMISTRY RT PLANETOLOGY: COMETS AND SMALL BODIES - Atmospheres--composition and chemistry PLANETOLOGY: COMETS AND SMALL BODIES - Composition PLANETOLOGY: FLUID PLANETS - Atmospheres--composition and chemistry PLANETOLOGY: FLUID PLANETS - Composition PLANETOLOGY: SOLID SURFACE PLANETS - Atmospheres--composition and chemistry PLANETOLOGY: SOLID SURFACE PLANETS - Composition Planetary geodesy and gravity BT GEODESY AND GRAVITY RT Gravitational fields Impact phenomena PLANETOLOGY: FLUID PLANETS - Gravitational fields Planetary interiors BT TECTONOPHYSICS RT PLANETOLOGY: FLUID PLANETS - Interiors PLANETOLOGY: SOLID SURFACE PLANETS - Interiors Planetary ionospheres BT IONOSPHERE RT Ionospheres--composition and chemistry Ionospheres--evolution Ionospheres--structure and dynamics PLANETOLOGY: FLUID PLANETS - Ionospheres PLANETOLOGY: SOLID SURFACE PLANETS - Ionospheres Planetary magnetospheres BT MAGNETOSPHERIC PHYSICS RT PLANETOLOGY: COMETS AND SMALL BODIES - Magnetic fields and magnetism PLANETOLOGY: FLUID PLANETS - Magnetospheres PLANETOLOGY: SOLID SURFACE PLANETS - Magnetospheres Planetary meteorology BT METEOROLOGY AND ATMOSPHERIC DYNAMICS RT PLANETOLOGY: FLUID PLANETS - Meteorology PLANETOLOGY: SOLID SURFACE PLANETS - Meteorology Planetary mineralogy and petrology BT MINERALOGY AND PETROLOGY Planetary rings BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Planetary tectonics BT TECTONOPHYSICS Planetary volcanism BT VOLCANOLOGY Planetology BT HISTORY OF GEOPHYSICS Plankton BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Plant ecology BT HYDROLOGY Plasma and MHD instabilities BT PLANETOLOGY: COMETS AND SMALL BODIES Plasma sheet BT MAGNETOSPHERIC PHYSICS Plasma temperature and density BT IONOSPHERE Plasma waves and turbulence BT INTERPLANETARY PHYSICS Plasmas BT ELECTROMAGNETICS Plasmasphere BT MAGNETOSPHERIC PHYSICS Plasticity, diffusion, and creep BT PHYSICAL PROPERTIES OF ROCKS Plate boundary--general BT TECTONOPHYSICS RT Plate tectonics Plate motions--general BT TECTONOPHYSICS RT Plate tectonics Plate motions--past BT TECTONOPHYSICS RT Plate tectonics Plate motions--present and recent BT TECTONOPHYSICS RT Plate tectonics Plate tectonics BT MARINE GEOLOGY AND GEOPHYSICS RT Plate boundary--general Plate motions--general Plate motions--past Plate motions--present and recent Pluto and satellites BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Pluton emplacement BT STRUCTURAL GEOLOGY Polar cap ionosphere BT IONOSPHERE Polar cap phenomena BT MAGNETOSPHERIC PHYSICS Polar meteorology BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Polar regions BT PLANETOLOGY: SOLID SURFACE PLANETS Pollution BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Pollution--urban and regional BT ATMOSPHERIC COMPOSITION AND STRUCTURE RT Aerosols and particles Precambrian BT INFORMATION RELATED TO GEOLOGIC TIME Precipitation BT HYDROLOGY Pressure, density, and temperature BT ATMOSPHERIC COMPOSITION AND STRUCTURE Project evaluation BT POLICY SCIENCES Prominence eruptions BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY RADIO SCIENCE NT Atmospheric propagation Electro-optics Electromagnetic metrology Electromagnetic noise and interference Interferometry Ionospheric physics Ionospheric propagation Magnetospheric physics Radar astronomy Radar atmospheric physics Radio astronomy Radio oceanography RADIO SCIENCE - General or miscellaneous RADIO SCIENCE - Instruments and techniques RADIO SCIENCE - Nonlinear phenomena RADIO SCIENCE - Remote sensing Radio wave propagation Signal processing Space and satellite communication Tomography and imaging Waves in plasma RADIO SCIENCE - General or miscellaneous BT RADIO SCIENCE RADIO SCIENCE - Instruments and techniques BT RADIO SCIENCE RADIO SCIENCE - Nonlinear phenomena BT RADIO SCIENCE RADIO SCIENCE - Remote sensing BT RADIO SCIENCE Radar astronomy BT RADIO SCIENCE Radar atmospheric physics BT RADIO SCIENCE Radiation and spectra BT PLANETOLOGY: COMETS AND SMALL BODIES Radiation processes BT SPACE PLASMA PHYSICS Radiative processes BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Radio astronomy BT RADIO SCIENCE Radio emissions BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Radio oceanography BT RADIO SCIENCE Radio wave propagation BT RADIO SCIENCE Radioactivity and radioisotopes BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Radioactivity methods BT EXPLORATION GEOPHYSICS Random media and rough surfaces BT ELECTROMAGNETICS Rapid time variations BT GEOMAGNETISM AND PALEOMAGNETISM Reference fields BT GEOMAGNETISM AND PALEOMAGNETISM Reference systems BT GEODESY AND GRAVITY Reflectors and feeds BT ELECTROMAGNETICS Regional and global gravity anomalies and Earth structure BT GEODESY AND GRAVITY Regional planning BT POLICY SCIENCES Remagnetization BT GEOMAGNETISM AND PALEOMAGNETISM Remote sensing and electromagnetic processes BT OCEANOGRAPHY: GENERAL Reservoirs BT HYDROLOGY Reversals BT GEOMAGNETISM AND PALEOMAGNETISM Rheology of the lithosphere and mantle BT GEODESY AND GRAVITY Rheology--crust and lithosphere BT TECTONOPHYSICS Rheology--general BT TECTONOPHYSICS Rheology--mantle BT TECTONOPHYSICS Ring current BT MAGNETOSPHERIC PHYSICS Rock and mineral magnetism BT GEOMAGNETISM AND PALEOMAGNETISM Role of fluids BT STRUCTURAL GEOLOGY Rotational variations BT GEODESY AND GRAVITY Runoff and streamflow BT HYDROLOGY SEISMOLOGY NT Body wave propagation Continental crust Core and mantle Earthquake dynamics and mechanics Earthquake ground motions and engineering Earthquake parameters Lithosphere and upper mantle Nuclear explosion seismology Oceanic crust Paleoseismology Seismic hazard assessment and prediction Seismicity and seismotectonics SEISMOLOGY - General or miscellaneous SEISMOLOGY - Instruments and techniques Surface waves and free oscillations Theory and modeling Volcano seismology SEISMOLOGY - General or miscellaneous BT SEISMOLOGY SEISMOLOGY - Instruments and techniques BT SEISMOLOGY SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY NT Celestial mechanics Chromosphere Corona Coronal holes Coronal mass ejections Energetic particles Flares Helioseismology Magnetic fields Photosphere Prominence eruptions Radio emissions Solar activity cycle Solar and stellar variability Solar irradiance SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY - General or miscellaneous SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY - Instruments and techniques Stellar astronomy Stellar interiors and dynamo theory Transition region Ultraviolet emissions X rays, gamma rays, and neutrinos SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY - General or miscellaneous BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY - Instruments and techniques BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY SPACE PLASMA PHYSICS NT Active perturbation experiments Charged particle motion and acceleration Electrostatic structures Experimental and mathematical techniques Ionization processes Kinetic and MHD theory Laboratory studies Magnetic reconnection Numerical simulation studies Radiation processes Shock waves SPACE PLASMA PHYSICS - Discontinuities SPACE PLASMA PHYSICS - General or miscellaneous SPACE PLASMA PHYSICS - Instruments and techniques SPACE PLASMA PHYSICS - Neutral particles SPACE PLASMA PHYSICS - Nonlinear phenomena SPACE PLASMA PHYSICS - Turbulence SPACE PLASMA PHYSICS - Wave/particle interactions Spacecraft sheaths, wakes, charging Spacecraft/atmosphere interactions Transport processes Wave/wave interactions Waves and instabilities SPACE PLASMA PHYSICS - Discontinuities BT SPACE PLASMA PHYSICS SPACE PLASMA PHYSICS - General or miscellaneous BT SPACE PLASMA PHYSICS SPACE PLASMA PHYSICS - Instruments and techniques BT SPACE PLASMA PHYSICS SPACE PLASMA PHYSICS - Neutral particles BT SPACE PLASMA PHYSICS SPACE PLASMA PHYSICS - Nonlinear phenomena BT SPACE PLASMA PHYSICS SPACE PLASMA PHYSICS - Turbulence BT SPACE PLASMA PHYSICS SPACE PLASMA PHYSICS - Wave/particle interactions BT SPACE PLASMA PHYSICS STRUCTURAL GEOLOGY NT Folds and folding Fractures and faults Local crustal structure Mechanics Mesoscopic fabrics Microstructures Pluton emplacement Role of fluids STRUCTURAL GEOLOGY - General or miscellaneous STRUCTURAL GEOLOGY - Instruments and techniques STRUCTURAL GEOLOGY - Remote sensing STRUCTURAL GEOLOGY - General or miscellaneous BT STRUCTURAL GEOLOGY STRUCTURAL GEOLOGY - Instruments and techniques BT STRUCTURAL GEOLOGY STRUCTURAL GEOLOGY - Remote sensing BT STRUCTURAL GEOLOGY Satellite orbits BT GEODESY AND GRAVITY Satellites BT PLANETOLOGY: COMETS AND SMALL BODIES Saturn BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Saturnian satellites BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Scattering and diffraction BT ELECTROMAGNETICS Science policy BT PUBLIC ISSUES Sea level variations BT OCEANOGRAPHY: PHYSICAL Seafloor morphology and bottom photography BT MARINE GEOLOGY AND GEOPHYSICS Sediment transport BT OCEANOGRAPHY: PHYSICAL Sedimentary petrology BT MINERALOGY AND PETROLOGY Sedimentation BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Seismic deformations BT GEODESY AND GRAVITY Seismic hazard assessment and prediction BT SEISMOLOGY Seismic methods BT EXPLORATION GEOPHYSICS Seismicity and seismotectonics BT SEISMOLOGY Seismology BT HISTORY OF GEOPHYSICS Shock wave experiments BT MINERAL PHYSICS Shock waves BT SPACE PLASMA PHYSICS Signal processing BT RADIO SCIENCE Signal processing and adaptive antennas BT ELECTROMAGNETICS Singularity expansion method BT ELECTROMAGNETICS Snow and ice BT HYDROLOGY Soil moisture BT HYDROLOGY Solar activity cycle BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Solar and stellar variability BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Solar cycle variations BT INTERPLANETARY PHYSICS Solar irradiance BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Solar radiation and cosmic ray effects BT IONOSPHERE Solar variability BT GLOBAL CHANGE Solar wind interactions with unmagnetized bodies BT MAGNETOSPHERIC PHYSICS Solar wind plasma BT INTERPLANETARY PHYSICS Solar wind/magnetosphere interactions BT MAGNETOSPHERIC PHYSICS Solar/planetary relationships BT HISTORY OF GEOPHYSICS Solid Earth BT GLOBAL CHANGE Sorptive scavenging BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Sources of the solar wind BT INTERPLANETARY PHYSICS South America BT INFORMATION RELATED TO GEOGRAPHIC REGION Space and satellite communication BT RADIO SCIENCE Space geodetic surveys BT GEODESY AND GRAVITY Spacecraft sheaths, wakes, charging BT SPACE PLASMA PHYSICS Spacecraft/atmosphere interactions BT SPACE PLASMA PHYSICS Spatial variations BT GEOMAGNETISM AND PALEOMAGNETISM Spatial variations attributed to seafloor spreading BT GEOMAGNETISM AND PALEOMAGNETISM Stable isotopes BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Standards and absolute measurements BT GEODESY AND GRAVITY Stellar astronomy BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Stellar interiors and dynamo theory BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Stellar planetary systems BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Stochastic processes BT HYDROLOGY Storms and substorms BT MAGNETOSPHERIC PHYSICS Stratosphere/troposphere interactions BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Stresses--crust and lithosphere BT TECTONOPHYSICS Stresses--deep-seated BT TECTONOPHYSICS Stresses--general BT TECTONOPHYSICS Surface materials and properties BT PLANETOLOGY: SOLID SURFACE PLANETS Surface water quality BT HYDROLOGY Surface waves and free oscillations BT SEISMOLOGY Surface waves and tides BT OCEANOGRAPHY: PHYSICAL Surfaces BT PLANETOLOGY: FLUID PLANETS Surfaces and interfaces BT MINERAL PHYSICS Surfaces and interiors BT PLANETOLOGY: COMETS AND SMALL BODIES Synoptic-scale meteorology BT METEOROLOGY AND ATMOSPHERIC DYNAMICS System design BT POLICY SCIENCES System operation and management BT POLICY SCIENCES TECTONOPHYSICS NT Continental contractional orogenic belts Continental margins and sedimentary basins Continental neotectonics Continental tectonics--extensional Continental tectonics--general Dynamics of lithosphere and mantle--general Dynamics, convection currents and mantle plumes Dynamics, gravity and tectonics Dynamics, seismotectonics Evolution of the Earth Heat generation and transport Physics of magma and magma bodies Planetary interiors Planetary tectonics Plate boundary--general Plate motions--general Plate motions--past Plate motions--present and recent Rheology--crust and lithosphere Rheology--general Rheology--mantle Stresses--crust and lithosphere Stresses--deep-seated Stresses--general TECTONOPHYSICS - General or miscellaneous TECTONOPHYSICS - Instruments and techniques Tomography TECTONOPHYSICS - General or miscellaneous BT TECTONOPHYSICS TECTONOPHYSICS - Instruments and techniques BT TECTONOPHYSICS Techniques applicable in three or more fields BT GENERAL OR MISCELLANEOUS Tectonics BT PLANETOLOGY: SOLID SURFACE PLANETS Tectonophysics BT HISTORY OF GEOPHYSICS Terrestrial reference systems BT GEODESY AND GRAVITY Theoretical modeling BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Theory and modeling BT SEISMOLOGY Thermal expansivity BT MINERAL PHYSICS Thermal properties BT PHYSICAL PROPERTIES OF ROCKS Thermosphere--composition and chemistry BT ATMOSPHERIC COMPOSITION AND STRUCTURE Thermosphere--energy deposition BT ATMOSPHERIC COMPOSITION AND STRUCTURE Thermospheric dynamics BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Tidal forces BT PLANETOLOGY: FLUID PLANETS Tides--Earth BT GEODESY AND GRAVITY Tides--ocean BT GEODESY AND GRAVITY Time variations--diurnal to secular BT GEOMAGNETISM AND PALEOMAGNETISM Time variations--secular and long term BT GEOMAGNETISM AND PALEOMAGNETISM Tomography BT TECTONOPHYSICS Tomography and imaging BT RADIO SCIENCE Topside ionosphere BT IONOSPHERE Tori and exospheres BT PLANETOLOGY: FLUID PLANETS Trace elements BT GEOCHEMISTRY Transient and time domain BT ELECTROMAGNETICS Transition region BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Transmission and scattering of radiation BT ATMOSPHERIC COMPOSITION AND STRUCTURE Transport processes BT SPACE PLASMA PHYSICS Transport properties BT PHYSICAL PROPERTIES OF ROCKS Trophodynamics BT OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL Tropical meteorology BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Troposphere--composition and chemistry BT ATMOSPHERIC COMPOSITION AND STRUCTURE Troposphere--constituent transport and chemistry BT ATMOSPHERIC COMPOSITION AND STRUCTURE Tsunamis and storm surges BT OCEANOGRAPHY: PHYSICAL Turbulence, diffusion, and mixing processes BT OCEANOGRAPHY: PHYSICAL Ultraviolet emissions BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY Unsaturated zone BT HYDROLOGY Upper ocean processes BT OCEANOGRAPHY: PHYSICAL Upwelling and convergences BT OCEANOGRAPHY: GENERAL Uranian satellites BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Uranus BT PLANETOLOGY: SOLAR SYSTEM OBJECTS VOLCANOLOGY NT Ash deposits Atmospheric effects Eruption mechanisms Eruption monitoring Lava rheology and morphology Magma migration Physics and chemistry of magma bodies Planetary volcanism VOLCANOLOGY - General or miscellaneous VOLCANOLOGY - Instruments and techniques VOLCANOLOGY - General or miscellaneous BT VOLCANOLOGY VOLCANOLOGY - Instruments and techniques BT VOLCANOLOGY Venus BT PLANETOLOGY: SOLAR SYSTEM OBJECTS Volcanic effects BT ATMOSPHERIC COMPOSITION AND STRUCTURE Volcanism BT PLANETOLOGY: SOLID SURFACE PLANETS Volcano seismology BT SEISMOLOGY Volcanology, geochemistry, and petrology BT HISTORY OF GEOPHYSICS Water cycles BT GLOBAL CHANGE Water masses BT OCEANOGRAPHY: GENERAL Water supply BT HYDROLOGY Water/energy interactions BT HYDROLOGY Wave attenuation BT PHYSICAL PROPERTIES OF ROCKS Wave propagation BT ELECTROMAGNETICS Wave/wave interactions BT SPACE PLASMA PHYSICS Waves and instabilities BT SPACE PLASMA PHYSICS Waves and tides BT METEOROLOGY AND ATMOSPHERIC DYNAMICS Waves in plasma BT RADIO SCIENCE Weathering BT HYDROLOGY RT Geomorphology and weathering Western boundary currents BT OCEANOGRAPHY: PHYSICAL Wetlands BT HYDROLOGY Workforce BT PUBLIC ISSUES X ray, neutron, and electron spectroscopy and diffraction BT MINERAL PHYSICS X rays, gamma rays, and neutrinos BT SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY