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 BREAK

10:45-11:00 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 DISCUSSION

12:00-12:30 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 DISCUSSION

11:45 AM-12:15 PM POSTER INTRODUCTIONS

(poster presentations are listed at the end of the program pages)

12:15-1:30 PM BREAK FOR LUNCH

SESSION 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 DISCUSSION

12:15-1:30 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