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

This is the published version, also available here: http://dx.doi.org/10.1029/2005GL024328. 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 I...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Schenk, Toni, Csatho, Bea M., van der Veen, Cornelis J., Brecher, H., Ahn, Y., Yoon, T.
Format: Article in Journal/Newspaper
Language:unknown
Published: American Geophysical Union 2015
Subjects:
Antarctic
Byrd
Byrd Glacier
East Antarctic Ice Sheet
Transantarctic Mountains
Antarc*
Antarctica
Ice Sheet
Online Access:http://hdl.handle.net/1808/17325
https://doi.org/10.1029/2005GL024328
Description
Summary:This is the published version, also available here: http://dx.doi.org/10.1029/2005GL024328. 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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