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Digital elevation model of King Edward VII Peninsula, West Antarctica, from SAR interferometry and ICESat laser altimetry

IEEE Geoscience and Remote Sensing Letters

By:
, , , ,
DOI: 10.1109/LGRS.2005.853623

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Abstract

We present a digital elevation model (DEM) of King Edward VII Peninsula, Sulzberger Bay, West Antarctica, developed using 12 European Remote Sensing (ERS) synthetic aperture radar (SAR) scenes and 24 Ice, Cloud, and land Elevation Satellite (ICESat) laser altimetry profiles. We employ differential interferograms from the ERS tandem mission SAR scenes acquired in the austral fall of 1996, and four selected ICESat laser altimetry profiles acquired in the austral fall of 2004, as ground control points (GCPs) to construct an improved geocentric 60-m resolution DEM over the grounded ice region. We then extend the DEM to include two ice shelves using ICESat profiles via Kriging. Twenty additional ICESat profiles acquired in 2003-2004 are used to assess the accuracy of the DEM. After accounting for radar penetration depth and predicted surface changes, including effects due to ice mass balance, solid Earth tides, and glacial isostatic adjustment, in part to account for the eight-year data acquisition discrepancy, the resulting difference between the DEM and ICESat profiles is -0.57 ?? 5.88 m. After removing the discrepancy between the DEM and ICESat profiles for a final combined DEM using a bicubic spline, the overall difference is 0.05 ?? 1.35 m. ?? 2005 IEEE.

Geospatial Extents

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Digital elevation model of King Edward VII Peninsula, West Antarctica, from SAR interferometry and ICESat laser altimetry
Series title:
IEEE Geoscience and Remote Sensing Letters
DOI:
10.1109/LGRS.2005.853623
Volume
2
Issue:
4
Year Published:
2005
Language:
English
Contributing office(s):
Earth Resources Observation and Science (EROS) Center (Geography)
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
IEEE Geoscience and Remote Sensing Letters
First page:
413
Last page:
417
Number of Pages:
5
Other Geospatial:
King Edward VII Peninsula, Antarctica
Online Only (Y/N):
N
Additional Online Files(Y/N):
N