Glacier retreat and melt-lake expansion at Stephenson Glacier, Heard Island World Heritage Area
Historical records, recent observations, and geomorphological evidence indicate that rates of retreat and downwasting of the tidewater Stephenson Glacier, and concurrent expansion of ice-marginal melt-lakes, has increased by an order of magnitude since 1987. Melt-lake expansion is partly the product...
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ftunivtasmania:oai:eprints.utas.edu.au:2355 2023-05-15T13:36:46+02:00 Glacier retreat and melt-lake expansion at Stephenson Glacier, Heard Island World Heritage Area Kiernan, K McConnell, A 2002 application/pdf https://eprints.utas.edu.au/2355/ https://eprints.utas.edu.au/2355/1/Glacier_retreat.pdf http://journals.cambridge.org en eng https://eprints.utas.edu.au/2355/1/Glacier_retreat.pdf Kiernan, K and McConnell, A 2002 , 'Glacier retreat and melt-lake expansion at Stephenson Glacier, Heard Island World Heritage Area' , Polar Record, vol. 38 , pp. 297-308 . cc_utas 260100 Geology 260000 Earth Sciences 260115 Glaciology Article PeerReviewed 2002 ftunivtasmania 2020-05-30T07:16:01Z Historical records, recent observations, and geomorphological evidence indicate that rates of retreat and downwasting of the tidewater Stephenson Glacier, and concurrent expansion of ice-marginal melt-lakes, has increased by an order of magnitude since 1987. Melt-lake expansion is partly the product of greatly accelerated ablation of older, ice-cored twentieth-century moraines. The timing of these changes broadly coincides with reported increases in atmospheric and sea-surface temperatures around other sub-Antarctic islands, but correlates less well with changes along the northern Antarctic Peninsula, where warming has been more rapid. These recent changes in landscape character and geomorphological processes have implications for geodiversity, biodiversity, and cultural heritage values in this World Heritage Area. Ifthe causal climatic warming is anthropogenic, it reinforces the fact that even the most remote and littlevisited nature conservation reserves may be compromised by off-site human impacts, confronting management authorities with difficult philosophical and practical issues. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Heard Island Polar Record Stephenson Glacier Tidewater University of Tasmania: UTas ePrints Antarctic Antarctic Peninsula Heard Island Stephenson ENVELOPE(-69.133,-69.133,-72.133,-72.133) Stephenson Glacier ENVELOPE(73.700,73.700,-53.100,-53.100) |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
260100 Geology 260000 Earth Sciences 260115 Glaciology |
spellingShingle |
260100 Geology 260000 Earth Sciences 260115 Glaciology Kiernan, K McConnell, A Glacier retreat and melt-lake expansion at Stephenson Glacier, Heard Island World Heritage Area |
topic_facet |
260100 Geology 260000 Earth Sciences 260115 Glaciology |
description |
Historical records, recent observations, and geomorphological evidence indicate that rates of retreat and downwasting of the tidewater Stephenson Glacier, and concurrent expansion of ice-marginal melt-lakes, has increased by an order of magnitude since 1987. Melt-lake expansion is partly the product of greatly accelerated ablation of older, ice-cored twentieth-century moraines. The timing of these changes broadly coincides with reported increases in atmospheric and sea-surface temperatures around other sub-Antarctic islands, but correlates less well with changes along the northern Antarctic Peninsula, where warming has been more rapid. These recent changes in landscape character and geomorphological processes have implications for geodiversity, biodiversity, and cultural heritage values in this World Heritage Area. Ifthe causal climatic warming is anthropogenic, it reinforces the fact that even the most remote and littlevisited nature conservation reserves may be compromised by off-site human impacts, confronting management authorities with difficult philosophical and practical issues. |
format |
Article in Journal/Newspaper |
author |
Kiernan, K McConnell, A |
author_facet |
Kiernan, K McConnell, A |
author_sort |
Kiernan, K |
title |
Glacier retreat and melt-lake expansion at Stephenson Glacier, Heard Island World Heritage Area |
title_short |
Glacier retreat and melt-lake expansion at Stephenson Glacier, Heard Island World Heritage Area |
title_full |
Glacier retreat and melt-lake expansion at Stephenson Glacier, Heard Island World Heritage Area |
title_fullStr |
Glacier retreat and melt-lake expansion at Stephenson Glacier, Heard Island World Heritage Area |
title_full_unstemmed |
Glacier retreat and melt-lake expansion at Stephenson Glacier, Heard Island World Heritage Area |
title_sort |
glacier retreat and melt-lake expansion at stephenson glacier, heard island world heritage area |
publishDate |
2002 |
url |
https://eprints.utas.edu.au/2355/ https://eprints.utas.edu.au/2355/1/Glacier_retreat.pdf http://journals.cambridge.org |
long_lat |
ENVELOPE(-69.133,-69.133,-72.133,-72.133) ENVELOPE(73.700,73.700,-53.100,-53.100) |
geographic |
Antarctic Antarctic Peninsula Heard Island Stephenson Stephenson Glacier |
geographic_facet |
Antarctic Antarctic Peninsula Heard Island Stephenson Stephenson Glacier |
genre |
Antarc* Antarctic Antarctic Peninsula Heard Island Polar Record Stephenson Glacier Tidewater |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Heard Island Polar Record Stephenson Glacier Tidewater |
op_relation |
https://eprints.utas.edu.au/2355/1/Glacier_retreat.pdf Kiernan, K and McConnell, A 2002 , 'Glacier retreat and melt-lake expansion at Stephenson Glacier, Heard Island World Heritage Area' , Polar Record, vol. 38 , pp. 297-308 . |
op_rights |
cc_utas |
_version_ |
1766083644062957568 |