Areal changes and motion of northern Larsen Ice Shelf, Antarctic Peninsula

Author

Rack, Wolfgang ; Rott, Helmut ; Nagler, Thomas ; Skvarca, Pedro

Author_Institution

Inst. for Meteorol. & Geophys., Innsbruck Univ., Austria

Volume

4

fYear

1998

fDate

6-10 Jul 1998

Firstpage

2243

Abstract

Areal changes and motion field of the northern Larsen Ice Shelf, Antarctic Peninsula, were analyzed based on Landsat TM data from 1986 to 1989 and ERS SAR data from 1991 to 1997. During this period the ice shelf north of Jason Peninsula decreased from 16200 km² to 10600 km². The main single event was observed in January 1995, when the two northernmost sections disintegrated almost completely. Velocities on the ice shelf were derived from TM and SAR data by feature tracking using cross-correlation techniques, based on repeat images of one-year intervals. The satellite derived motion compares well with field measurements which are available at a few sites

Keywords

glaciology; oceanographic regions; sea ice; AD 1986 to 1997; Antarctic Peninsula; Antarctica; Jason Peninsula; Larsen Ice Shelf; Southern Ocean; area variation; areal change; break up; disintegration; glaciology; ice shelf; iceberg production; motion; ocean; optical image; radar image; remote sensing; sea ice; Antarctica; Geophysics; Ice shelf; Meteorology; Motion analysis; Remote sensing; Satellites; Seals; Temperature; Tin;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International

Conference_Location

Seattle, WA

Print_ISBN

0-7803-4403-0

Type

conf

DOI

10.1109/IGARSS.1998.703800

Filename

703800