Rigorous 3D change determination in Antarctic Peninsula glaciers from stereo WorldView-2 and archival aerial imagery

Fieber, K.D., Mills, J.P., Miller, P.E., Clarke, L. ORCID: 0000-0002-8174-3839, Ireland, L. and Fox, A.J., 2018. Rigorous 3D change determination in Antarctic Peninsula glaciers from stereo WorldView-2 and archival aerial imagery. Remote Sensing of Environment, 205, pp. 18-31. ISSN 0034-4257

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This paper presents detailed elevation and volume analysis of 16 individual glaciers, grouped at four locations, spread across the Antarctic Peninsula (AP). The study makes use of newly available WorldView-2 satellite stereo imagery to exploit the previously untapped value of archival stereo aerial photography. High resolution photogrammetric digital elevation models (DEMs) are derived to determine three-dimensional glacier change over an unprecedented time span of six decades with an unparalleled mean areal coverage of 82 % per glacier. The use of an in-house robust surface matching algorithm ensured rigorous alignment of the DEMs to overcome inherent problems associated with processing archival photography, most notably the identification and correction of scale error in some datasets. The analysis provides insight into one of the most challenging and data scarce areas on the planet by expanding the spatial extent north of the AP to include previously unstudied glaciers located in the South Shetland Islands. 81 % of glaciers studied showed considerable loss of volume over the period of record. The mean annual mass loss for all glaciers yielded 0.24 ±0.08 m.w.e. per year, with a maximum mass loss of up to 62 m.w.e. and frontal retreat exceeding 2.2 km for Stadium Glacier, located furthest north on Elephant Island. Observed volumetric loss was broadly, though not always, correlated with frontal retreat. The combined mass balance of all 16 glaciers yielded -1.862 ± 0.006 Gt, which corresponds to -0.005 26 mm sea level equivalent (SLE) over the 57 year observation period.

Item Type: Journal article
Publication Title: Remote Sensing of Environment
Creators: Fieber, K.D., Mills, J.P., Miller, P.E., Clarke, L., Ireland, L. and Fox, A.J.
Publisher: Elsevier BV
Date: February 2018
Volume: 205
ISSN: 0034-4257
Divisions: Schools > School of Animal, Rural and Environmental Sciences
Record created by: Jeremy Silvester
Date Added: 06 Oct 2023 15:05
Last Modified: 06 Oct 2023 15:05
URI: https://irep.ntu.ac.uk/id/eprint/49897

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