Multi-decadal elevation changes on Bagley Ice Valley and Malaspina Glacier, Alaska

Multi-decadal elevation changes on Bagley Ice Valley and Malaspina Glacier, Alaska

Digital elevation models (DEMs) of Bagley Ice Valley and Malaspina Glacier produced by (i) Intermap Technologies, Inc. (ITI) from airborne interferometric synthetic aperture radar (InSAR) data acquired 4–13 September 2000, (ii) the German Aerospace Center (DRL) from spaceborne InSAR data acquired by...

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Veröffentlicht in:Geophysical research letters 2003-08, Vol.30 (16), p.CRY1.1-n/a
Hauptverfasser: Muskett, Reginald R., Lingle, Craig S., Tangborn, Wendell V., Rabus, Bernhard T.
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container_end_page n/a
container_issue 16
container_start_page CRY1.1
container_title Geophysical research letters
container_volume 30
creator Muskett, Reginald R.
Lingle, Craig S.
Tangborn, Wendell V.
Rabus, Bernhard T.
description Digital elevation models (DEMs) of Bagley Ice Valley and Malaspina Glacier produced by (i) Intermap Technologies, Inc. (ITI) from airborne interferometric synthetic aperture radar (InSAR) data acquired 4–13 September 2000, (ii) the German Aerospace Center (DRL) from spaceborne InSAR data acquired by the Shuttle Radar Topography Mission (SRTM) 11–22 February 2000, and (iii) the US Geological Survey (USGS) from aerial photographs acquired in 1972/73, were differenced to estimate glacier surface elevation changes from 1972 to 2000. Spatially non‐uniform thickening, 10 ± 7 m on average, is observed on Bagley Ice Valley (accumulation area) while non‐uniform thinning, 47 ± 5 m on average, is observed on the glaciers of the Malaspina complex (mostly ablation area). Even larger thinning is observed on the retreating tidewater Tyndall Glacier. These changes have resulted from increased temperature and precipitation associated with climate warming, and rapid tidewater retreat.
doi_str_mv 10.1029/2003GL017707
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source Wiley Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Wiley-Blackwell AGU Digital Library; Wiley Online Library (Open Access Collection)
subjects Earth, ocean, space
Exact sciences and technology
title Multi-decadal elevation changes on Bagley Ice Valley and Malaspina Glacier, Alaska
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