Registering imagery to ICESat data for measuring elevation changes on Byrd Glacier, Antarctica

Details Registering imagery to ICESat data for measuring elevation changes on Byrd Glacier, Antarctica Registering imagery to ICESat data for measuring elevation changes on Byrd Glacier, Antarctica

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3223s05s&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 23, CiteID L23S05

Statistics

Methodology

1

Cryosphere: Remote Sensing, Cryosphere: Dynamics, Cryosphere: Instruments And Techniques, Geodesy And Gravity: Mass Balance (0762, 1223, 1631, 1836, 1843, 3010, 3322, 4532), Global Change: Cryospheric Change (0776)

Scientific paper

We present a new approach to derive control information from ICESat data that enables rigorous registration of aerial and satellite imagery. The technique, based on matching terrain features identified from ICESat measurements and aerial imagery, opens the door to transform results of previous studies to a global reference frame. We demonstrate the proposed methodology with historical aerial photographs to determine surface changes between 1979 and 2004 over Byrd Glacier. This is important because there is no satellite radar altimetry coverage south of 81.5° S, which limits mass balance knowledge of outlet glaciers draining the East Antarctic ice sheet through the southern Transantarctic Mountains. Our study indicates that the grounded part of Byrd Glacier is close to being in balance. However, we observe large thinning on the floating part of the glacier, probably induced by increased basal melting.

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