SCIENTIFIC PROGRAM
The West Antarctic Ice Sheet
September 13 -18, 1998 Orono, Maine
Conveners: Robert Bindschadler, NASA Goddard Space Flight Center
Harold Borns, Institute for Quaternary Studies, University of Maine
SUNDAY, SEPTEMBER 13, 1998
6:00-8:00 PM Registration and Reception
MONDAY, SEPTEMBER 14, 1998
8:30-9:00 AM Introduction, Welcoming Remarks R Bindschadler and H Borns
SESSION I:
HISTORY OF THE WEST ANTARCTIC ICE SHEET FROM GEOLOGIC EVIDENCE|
9:00-9:15 AM
|
R P Scherer |
Pleistocene Collapse of the West Antarctic Ice Sheet Confirmed, and Deep Till Deformation at Upstream B Questioned |
|
9:15-9:30 AM |
N W Dunbar, W C McIntosh, R P Esser, T I Wilch, G A Zielinski |
Direct Dating and Geochemical Correlations of Englacial Tephra Layers at Two Sites in West Antarctica |
|
9:30-9:45 AM |
R P Ackert , M D Kurz, D J Barcaly, H W Borns Jr, P E Calkin |
West Antarctic Ice Sheet Chronology, Reconstructions Using Surface Exposure Dating |
|
9:45-10:00 AM |
H W Borns Jr , P E Calkin, R Ackert |
Evidence for Thicker Ice in Interior West Antarctica |
|
10:00-10:15 AM |
L R Bartek, S J Kluiving, B P Luyendyk |
Evidence of Variation in Ice Sheet / Sunstrate Interactions in a Multi-Scale Investigation of Glaciated Continental Margins in the Ross Sea and Offshore Marie Byrd Land, Antarctica |
10:15-10:45 AM
REFRESHMENT BREAK10:45-11:00
AM|
K J Licht , J L Fastook |
Constraining a Numerical Ice Sheet Model with Geologic Data Over One Ice Sheet Advance/Retreat Cycle in the Ross Sea |
|
11:00-11:15 AM |
B L Hall , G H Denton |
Deglacial Chronology of the Western Ross Sea from Terrestrial Data |
11:15 AM-12:00 PM
PANEL DISCUSSION12:00-12:30 PM POSTER INTRODUCTIONS
(poster presentations are listed at the end of the program pages)
12:30-2:00 PM BREAK FOR LUNCH
SESSION II:
GLOBAL PERSPECTIVE OF WEST ANTARCTIC HISTORY|
2:00-2:15 PM |
L H Burckle |
Sticking My Neck Out, Part 1 Living on the Curve, A Farfield View of Melting Ice Sheets |
|
2:15-2:30 PM |
E J Steig , J W C White |
Comparisons Among Antarctic and Greenland Ice Cores and Relationships to Ocean and Atmospheric Circulation and Ice Dynamics |
|
2:30-2:45 PM |
T B Kellog , D E Kellog |
Holocene Transformation of the 'Weak Underbelly' From an Innie to an Outie? Evidence From the Amundesen Sea Shelf |
|
2:45-2:55 PM |
L H Burckle |
Sticking My Neck Out, Part 2 A Funny Thing Happened on the Way to the Last Interglacial. Was it Drawdown of the West Antarctic Ice Sheet? |
|
2:55-3:05 PM |
L H Burckle |
Sticking My Neck Out, Part 3 Apparent Late Holocene Migration of the Polar Front in Some Sectors of the Southern Ocean |
|
3:05-3:20 PM |
R B Alley , P U Clark |
A Bipolar Perspective on Global Climate Change: Implications for WAISCORES |
3:20-3:50 PM REFRESHMENT BREAK
3:50-4:30 PM PANEL DISCUSSION
4:30-6:00 PM POSTER VIEWING
(poster presentations are listed at the end of the program pages)
TUESDAY, SEPTEMBER 15, 1998
SESSION III:
WEST ANTARCTIC ACCUMULATION AND THE ICE-CORE RECORD|
8:30-8:45 AM |
A Gow , J R Petit, H Engelhardt |
Ice Cores From Siple Dome |
|
8:45-9:00 AM |
A J Gow, D A Meese |
Preliminary Analyses of Ice Cores From Siple Dome, West Antarctica |
|
9:00-9:15 AM |
K J Kreutz , P A Mayewski, L D Meeker, M S Twickler, S I Whitlow, I I Pittalwala |
Sea Level Pressure Variability in the Amundsen Sea Over the Past Century Inferred From a West Antarctic Glaciochemical Record |
|
9:15-9:30 AM |
M R Albert |
Properties and Processes of Air-Snow-Firn Exchange at Siple Dome, Antarctica Tuesday, September 15, 1998 |
|
9:30-9:45 AM |
D A Braaten |
Direct Measurements of Episodic Snow Accumulation on the Antarctic Polar Plateau |
9:45-10:15 AM PANEL DISCUSSION
10:15-10:45 AM REFRESHMENT BREAK
SESSION IV: WEST ANTARCTIC ICE SHELVES AND THEIR EFFECT ON THE ICE SHEET
|
10:45-11:00 AM |
S S Jacobs |
Ice Shelves and Southern Ocean Ventilation |
|
11:00-11:15 AM |
A Jenkins , D M Holland, S S Jacobs |
Circulation Beneath Ice Shelves Simulated by an Isopycnic Coordinate Ocean Model |
|
11:15-11:30 AM |
T Hughes , E Wilch, J L Fastook |
Linking Antarctic Ice Sheet Stability to the Basal Mass Balance |
|
11:30-11:45 AM |
C L Hulbe , D R MacAyeal |
The Effect of Ice Shelf Disintegration on the Mass Balance of the West Antarctic Ice Sheet |
|
11:45 -12:00 PM |
K Taylor |
Was the Breakup of the West Antarctic Ice Shelfs a Trigger for Dansgaard/Oeschger Cycles? |
12:00-12:45 PM PANEL DISCUSSION
12:45-2:00 PM BREAK FOR LUNCH
SESSION V:
CHANGES IN WEST ANTARCTIC ICE FLOW-SURFACE EVIDENCE|
2:00-2:15 PM |
J G Ferrigno , R S Williams, Jr., C E Rosanova, B K Lucchitta, C Swithinbank |
Analysis of Coastal Change in Marie Byrd Land and Ellsworth Land, West Antarcctica, Using Landsat Imagery |
|
2:15-2:30 PM |
H Sandhager , D G Vaughan, J Sievers, A Lambrecht |
Thematic Maps of Filchner-Ronne-Schelfeis: Ice Thickness, Surface Features, and Extent |
|
2:30-2:45 PM |
J C Behrendt , T A Scambos, U Herzfeld, N B Aughenbaugh |
Changes in the Filchner-Ronne Ice Shelf Since 1957 |
|
2:45-3:00 PM |
J L Bamber , D G Vaughan |
Historic Flow Features on the Ross and Filchner Ronne Ice Shelves From Satellite Radar Altimetry |
|
3:00-3:15 PM |
M A Fahnestock , T A Scambos, G Kvaran, R A Bindschadler |
A Millennium of Variable Ice Discharge From the Siple Coast Ice Streams Recorded on the Ross Ice Shelf |
3:15-3:45 PM REFRESHMENT BREAK
|
3:45-4:00 PM |
R W Jacobel , T A Scambos, N A Nereson |
Changes in Outlet Geometry of Ice Streams in the Ross Embayment |
|
4:00-4:10 PM |
E R Rignot |
Fast Recession of Pine Island Glacier, West Antarctica |
|
4:10-4:20 PM |
E R Rignot |
Mass Balance and Grounding Line Stability of Antarctic Glaciers Draining the West Antarctic Ice Sheet into the Ronne, Ice Shelf, Antarctica |
4:20-5:00 PM PANEL DISCUSSION
WEDNESDAY, SEPTEMBER 16, 1998
8:00 AM-6:00 PM CONFERENCE FIELD TRIP
THURSDAY, SEPTEMBER 17, 1998
SESSION VI:
CHANGES IN WEST ANTARCTIC ICE FLOW-INTERNAL EVIDENCE|
8:30-8:45 AM |
A Gades , C Raymond, H Conway, R Jacobel |
Basal Properties of Siple Dome, West Antarctica Inferred From Radio Echo-Sounding Measurements |
|
8:45-9:00 AM |
H Engelhardt , B Kamb |
Thermal History of the West Antarctic Ice Sheet |
|
9:00-9:15 AM |
H Conway , A Gades |
Glacial History of Roosevelt Island, West Antarctica |
|
9:15-9:30 AM |
N A Nereson |
Elevation of Ice Stream Margin Scars After Stagnation |
|
9:30-9:45 AM |
I M Whillans, G Hamilton |
Rather Strange, Hook Shaped Feature on Interstream Ridge B1/B2, West Antarctica |
|
9:45-10:00 AM |
S Shabtaie , C R Bentley |
Comparison of "Wildcat" Interpretations of Ice-Sheet Surface Features From Satellite Imagery With Geophysical Observatiions and Glaciological Principles |
10:00-10:30 AM REFRESHMENT BREAK
|
10:30-10:45 AM |
M Jackson , W B Kamb |
Dynamics of the Shear Margin of Ice Stream B |
|
10:45-11:00 AM |
J L Fastook |
Heat Generation in the Shear Margin: A Finite-Element Model |
11:00-11:45 AM
PANEL DISCUSSION11:45 AM-12:15 PM
POSTER INTRODUCTIONS(poster presentations are listed at the end of the program pages)
12:15-1:30 PM
BREAK FOR LUNCHSESSION VII: WEST ANTARCTIC CATCHMENT AREAS AND ICE-STREAM ONSETS
|
1:30-1:45 PM |
H F J Corr , D G Vaughan, C S M Doake, A Jenkins, J Ferris |
Reconnaissance Airborne Survey in the Pine Island Glacier Basin |
|
1:45-2:00 PM |
H F J Corr , D G Vaughan, C S M Doake, A Jenkins, J Ferris |
Basil Characteristics of the Rutford Ice Stream/Carlson Inlet Catchment Area Inferred From Airborne Ice-Sounding Radar |
|
2:00-2:15 PM |
A M Smith |
Rutford Ice Stream and Carlson Inlet: Basal Conditions on Adjacent Active and Stagnant Ice Streams, and the Intervening Ice Sheet |
|
2:15-2:30 PM |
D D Blankenship , C A Finn, D L Morse, R E Bell, M E Peters, S D Kempf |
Geologic Controls on Subglacial Melting in West Antarctica: A Systematic Evaluation of Integrated Aerogeophysical Observations |
2:30-3:00 PM REFRESHMENT BREAK
|
3:00-3:15 PM |
R Bindschadler , X Chen, P Vornberger |
The Onset of Ice Stream D, West Antarctica |
|
3:15-3:30 PM |
S F Price , I M Whillans |
Upstream Migration of the Northern Shear Margins of Ice Stream B1b, West Antarctica |
|
3:30-3:45 PM |
I M Whillans |
Ice Stream Switches |
3:45-4:30 PM PANEL DISCUSSION
4:30-6:00 PM POSTER VIEWING
(poster presentations are listed at the end of the program pages)
6:30-9:00 PM CONFERENCE BANQUET
FRIDAY, SEPTEMBER 18, 1998
SESSION VIII:
BASAL CONDITIONS OF THE WEST ANTARCTIC ICE SHEET|
8:30-8:45 AM |
D L Morse , D D Blankenship, S A Anandakrishnan |
Driving Stress and Basal Hydrologic Potential of Central West Antarctica |
|
8:45-9:00 AM |
M E Peters , D D Blankenship, D L Morse, R B Alley |
Basal Conditions of Ice Streams B and C From Coherent Airborne Radar Sounding |
|
9:00-9:15 AM |
B Kamb , H Engelhardt |
Physical Conditions and Processes Responsible for West Antarctic Ice Stream Flow as Revealed by Borehole Observations in Ice Streams B and C in Interstream Ridges B1-B2 and C-D |
|
9:15-9:30 AM |
S Tulaczyk, B Kamb, H Engelhardt |
Stability and Evolution of an Ice Stream Moving Over a Till Bed of Plastic Rheology: A New Ice-Stream Model Incorporating Non-Linear Dynamics of the Coupled Ice-Till-Water System |
|
9:30-9:45 AM |
R C A Hindmarsh |
Ice-Stream Waves and Surface Texture and Meso-Scale Variability: The Coupled Flow of Ice, Till and Water |
9:45-10:15 AM PANEL DISCUSSION
10:15-10:45 AM REFRESHMENT BREAK
SESSION IX:
MODELING THE WEST ANTARCTIC ICE SHEET|
10:45-11:00 AM |
T K Dupont , R B Alley |
Ice Stream Evolution on a Millennial Time Scale |
|
11:00-11:15 AM |
A J Payne , D J Baldwin |
The Role of Thermomechanics in Ice-Stream Evolution |
|
11:15-11:30 AM |
D J Baldwin , A J Payne |
A Coupled Ice Sheet-Ice Stream Model |
|
11:30-11:45 AM |
C L Hulbe |
A New Numerical Model of Coupled Inland, Ice Stream, and Ice Shelf Flow |
11:45 AM-12:15 PM
PANEL DISCUSSION12:15-1:30 PM BREAK FOR LUNCH
SESSION X:
STAGNATION OF A WEST ANTARCTIC ICE STREAM|
1:30-1:45 PM |
H Engelhardt , B Kamb |
Sticky Spot on Ice Stream C |
|
1:45-2:00 PM |
S Anandakrishnan , R B Alley |
Review of Seismic Studies on Ice Stream C, West Antarctica, and Hypotheses for its Stagnation |
|
2:00-2:15 PM |
B E Smith , N Lord, C R Bentley |
Ground-Based Radar Study of the Stagnation of Ice Stream C and the Siple Ice Stream, West Antarctica |
|
2:15-2:30 PM |
J A Bohlander , T A Scambos |
Ice Streams D and F: Flow Dynamics and Changes |
2:30-3:00 PM PANEL DISCUSSION
3:00-3:30 PM REFRESHMENT BREAK
SESSION XI:
MASS BALANCE OF THE WEST ANTARCTIC ICE SHEET|
3:30-3:45 PM |
S Shabtaie , C R Bently |
Negative Mass Balance of Ice Streams D and E, West Antarctica |
|
3:45-4:00 PM |
D G Vaughan , J L Bamber |
Drainage Basin Analysis and Improved Calculation of Balance Fluxes for West Antarctic Ice Streams and Glaciers |
|
4:00-4:15 PM |
D J Wingham , J A D Mansley |
Recent Elevation Change in West Antarctica |
|
4:15-4:30 PM |
G Hamilton , I M Whillans |
Thickness Changes on Ice Streams B and C, West Antarctica |
|
4:30-4:45 PM |
T Hughes |
What's Going On in West Antarctica |
4:45-5:15 PM PANEL DISCUSSION
5:15 PM CONFERENCE ADJOURNS
POSTER SESSION: MONDAY, SEPTEMBER 14, and TUESDAY, SEPTEMBER 15, 1998
|
1 |
M R Albert |
Two Models for Snow and Firn Ventilation: One Detailed, One Simple |
|
2 |
K A Bridges , M S Twickler, K J Kreutz, S I Whitlow, P A Mayewski |
Preliminary Geochemical Analysis of an Ice Core From the Upper Section of Ice Stream C |
|
3 |
K Grosfeld , R Gerdes |
Ocean Circulation in the Filchner-Ronne Ice Shelf Domain: First Results of a 3-Dimensional Ocean Model |
|
4 |
C S Lingle , E N Suleimani, R Kwok |
Surface Velocities and Mass Balance in the Thwaites and Pine Island Glacier Drainage Basins, West Antarctica |
|
5 |
J R McConnell , R C Bales |
Understanding Atmosphere-toSnow-Firn Transfer of Hydrogen Peroxide at Siple Dome |
|
6 |
P C Molzer , U S Tenbrink |
Three Dimensional Stratigraphic Modeling of Glaciated Continental Shelves |
|
7 |
K W Nicholls , A Jenkins, L Padman |
Oceanographic Conditions on the Southwestern Weddell Sea Continental Shelf in Early 1998 |
|
8 |
H Oerter |
Summary of Mass Balance Studies on Moellereisstrom and Foundation Ice Stream, Filchner-Ronne-Schelfeis, Since 1980 |
|
9 |
C E Rosanova , B K Lucchitta |
Thwaites Glacier Velocities and Strain Field Using 1995 and 1996 ERS Images |
|
10 |
T A Scambos , M A Fahnestock, J C Behrendt |
Change Detection and Flow History for the Filchner/Roone Ice Shelf |
|
11 |
Y Shen |
Stratigraphic Modeling of Glaciated Continental Shelves: Effects of Local Bathymetry |
|
12 |
C A Shuman , C R Stearns |
Temperature History Reconstruction at Siple Dome From Satellite Observations and Automatic Weather Stations |
|
13 |
J O Stone , D Zwartz, M C G Mabin, K Lambeck, D Fabel, L J Fifield |
Exposure Dating Constraints on Ice Volume and Retreat History in East Antarctica, and Prospects in West Antarctica |
|
14 |
J C Villinski , S P Sylvia, E W Domack, J M Hayes |
Ages and Composition of Mixtures of Organic Compounds Extractable From Ross Sea Sediments |
|
15 |
A Wood , A Jenkins |
A Two-Layer Model of the Thermohaline Circulation Beneath an Ice Shelf |
|
16 |
S S Shipp , J B Anderson |
Results From Recent Seismic Investigations of Ross Sea, Details of the Subglacial System |
|
17 |
C J Van der Veen |
Fracture Mechanics Approach to Investigating Conditions Leading to Ice-Shelf Break-Up |
|
18 |
D G Vaughan , H F J Corr, C S M Doake |
Distortation of Cotemporal Layers in Ice Revealed by Ground Penetrating Radar |
POSTER SESSION: THURSDAY, SEPTEMBER 17, and FRIDAY, SEPTEMBER 18, 1998
|
19 |
R J Bauer , G R Scharfen |
Advantages of Developing and Using Metadata for Antarctic Research |
|
20 |
C R Bentley , M D Stenoien |
Ice Motion Measurements in the Pine Island Glacier Catchment Area |
|
21 |
G Catania , C Paola |
A Physical Model of Pressurized Flow Over an Unconsolidated Bed: Implications for Subglacial Braided Channels |
|
22 |
A L Gray , K E Mattar, R Bindschadler, K C Jezek |
Ice Motion in West Antarctica from RADARSAT Interferometry |
|
23 |
C Liu, E Lord, C R Bentley |
Water Flow at the Bed of Ice Stream B2 Possibly Sensed by Radar Survey |
|
24 |
D R MacAyeal, C L Huble |
EISMINT Validation of a New Numerical Model of Ice Sheet Flow |
|
25 |
C F Raymond, N A Nereson, T A Scambos, R W Jacobel, H Conway |
Current Mass Balance of Siple Dome Summit and Implications for the Balance of Ice Streams C and D Over the Last 1000 Years |
|
26 |
M Studinger , R E Bell, D D Blankenship, C A Finn |
Geologic Structures Underlying the Onset of West Antarctic Ice Streams: Constraints From Airborne Geophysical Data |
|
27 |
T Thorsteinsson , C F Raymond |
The Relative Role of Sliding and Deformation in the Motion of Ice Streams Over Deformable Till |
|
28 |
W D Harrison , J L Morack, D Elsberg, M A Zumberge, E Husmann |
Installation of Vertical Strain Meters at Siple Dome and Preliminary Results |
|
29 |
E Le Meur , R C A Hindmarsh |
Inferring the Present-day Imbalance of the West Antartic Ice Sheet From the Bedrock Isostatic Signal |
|
30 |
D N Reusch , T Hughes |
Basal Conditions Along Byrd Glacier |
|
31 |
S Shabtaie , C R Bentley |
Near Surface Acidity On and Around the Ross Ice Shelf From Absolute Conductivity Measurements |
|
32 |
V B Spikes , B M Csatho, I M Whillans |
Validation of SOAR Laser Altimetry |
|
33 |
E D Waddington , G D Clow, H B Conway, N A Nereson |
Stratigraphic and Thermal Signatures of Ice Divides: Tools to Date Postglacial WAIS Recession |
|
34 |
M J Willis , N Young |
A Comparison of Satellite RADAR Altimeter Derived Snow Surfaces and Elevations Derived From Ground Truth Surveys |
|
35 |
C R Bentley |
ICESat: Ground Truth for the WAIS From Space |
|
36 |
J Scofield , Z Zhao, J Fastook, T Hughes, H Brecher, C Swithinbank |
The Flow Regime of Byrd Glacier |
|
37 |
C A Raymond , E R Ivins, M B Heflin |
The Role of Geodesy in Assessing the State of the West Antarctic Ice Sheet |