Title Persistent iceberg groundings in the western Weddell Sea, Antarctica
Author Luckman, A.; Padman, L.; Jansen, D.
Author Affil Luckman, A., Swansea University, School of Environment and Society, Swansea, United Kingdom. Other: Earth and Space Research
Source Remote Sensing of Environment, 114(2), p.385-391. Publisher: Elsevier, New York, NY, United States. ISSN: 0034- 4257
Publication Date Feb. 15, 2010
Notes In English. 23 refs. GeoRef Acc. No: 310016. CRREL Acc. No: 65006836
Index Terms glacial geology; ice shelves; icebergs; lasers; microwaves; models; radar; remote sensing; synthetic aperture radar; Antarctica--Filchner Ice Shelf; Antarctica-- Larsen Ice Shelf; Southern Ocean--Weddell Sea; altimetry; Antarctic Peninsula; Antarctica; atmosphere; bathymetry; Filchner Ice Shelf; fresh water; Larsen Ice Shelf; laser methods; microwave methods; movement; ocean circulation; radar methods; Ronner Ice Shelf; SAR; satellite methods; sea water; Southern Ocean; Weddell Sea
Abstract We use the time-average of a series of satellite synthetic aperture radar (SAR) images from 2005 to 2007 to identify grounded icebergs in the western Weddell Sea. Satellite laser altimetry along repeated ground tracks confirms that regions of high mean backscatter are associated with stationary, tabular icebergs. The altimeter data also provide iceberg freeboard, from which we infer maximum ice draft assuming the lightly-grounded limit and a two-layer density model consistent with a source at Filchner–Ronne Ice Shelf. The maximum iceberg draft agrees very well with the ocean depth at a point where the bathymetry is well constrained by ship soundings. (mod. journ. abst.)
URL http://hdl.handle.net/10.1016/j.rse.2009.09.009
Publication Type journal article
Record ID 91477