HR: 08:00h
AN: C41A-01 [Abstracts]
TI: Recent Near-Coastal Elevation Changes on the Greenland Ice Sheet From Aircraft Laser
Altimetry
AU: * Krabill, W B
EM: william.b.krabill@nasa.gov
AF: NASA/GSFC/Wallops Flight Facility, Building N159, Room E201, Wallops Island, VA 23337
United States
AU: Thomas, R H
EM: thomas@osb.wff.nasa.gov
AF: EG&G Services, Inc., Building N159, Wallops Island, VA 23337
United States
AU: Swift, R N
EM: swift@osb.wff.nasa.gov
AF: EG&G Services, Inc., Building N159, Wallops Island, VA 23337
United States
AU: Fredrick, E B
EM: earlb@osb.wff.nasa.gov
AF: EG&G Services, Inc., Building N159, Wallops Island, VA 23337
United States
AU: Manizade, S
EM: manizade@osb.wff.nasa.gov
AF: EG&G Services, Inc., Building N159, Wallops Island, VA 23337
United States
AU: Yungel, J K
EM: yungel@osb.wff.nasa.gov
AF: EG&G Services, Inc., Building N159, Wallops Island, VA 23337
United States
AU: Martin, C F
EM: martin@osb.wff.nasa.gov
AF: EG&G Services, Inc., Building N159, Wallops Island, VA 23337
United States
AU: Sonntag, J G
EM: sonntag@osb.wff.nasa.gov
AF: EG&G Services, Inc., Building N159, Wallops Island, VA 23337
United States
AB:
The Arctic Ice Mapping group (Project AIM) at the NASA Goddard Space Flight Center Wallops Flight Facility has been
conducting systematic topographic surveys of the Greenland Ice Sheet (GIS) since 1993, using scanning airborne laser
altimeters combined with Global Positioning System (GPS) technology. Earlier surveys showed the ice sheet above 2000-m
elevation to be in balance, but with localized regions of thickening or thinning. Thinning predominates at lower elevations
and thinning rates have recently increased, resulting in a negative mass balance for the entire ice sheet. In May 2005
critical segments of near-coastal flight lines were re-surveyed. Results from the new data will be presented, showing
substantial accelerated thinning in several SE Greenland glaciers.
DE: 1827 Glaciology (0736, 0776, 1863)
DE: 1863 Snow and ice (0736, 0738, 0776, 1827)
SC: Cryosphere [C]
MN: Fall Meeting 2005