Geomorphological processes and frozen ground conditions in Elephant Point (Livingston Island, South Shetland Islands, Antarctica)
Elephant Point is an ice-free area in the SW corner of Livingston Island (Maritime Antarctica). The retreat of Rotch Dome glacier during the Holocene has exposed a land area of 1.16 km2 . Up to 17.3% of this surface has become ice-free between 1956 and 2010. A detailed geomorphological mapping of th...
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ftunivlisboa:oai:repositorio.ul.pt:10451/36212 2023-05-15T13:37:33+02:00 Geomorphological processes and frozen ground conditions in Elephant Point (Livingston Island, South Shetland Islands, Antarctica) Oliva, Marc Ruiz-Fernández, Jesús 2018-12-28T11:41:33Z http://hdl.handle.net/10451/36212 https://doi.org/10.1016/j.geomorph.2016.01.020 eng eng Elsevier https://www.sciencedirect.com/science/article/pii/S0169555X16300204?via%3Dihub Oliva, M., Ruiz-Fernández, J. (2017). Geomorphological processes and frozen ground conditions in Elephant Point (Livingston Island, South Shetland Islands, Antarctica). Geomorphology, 293, 368–379. https://doi.org/10.1016/j.geomorph.2016.01.020. 0169-555X http://hdl.handle.net/10451/36212 doi:10.1016/j.geomorph.2016.01.020 embargoedAccess Elephant Point Maritime Antarctica Geomorphology Frozen ground Permafrost article 2018 ftunivlisboa https://doi.org/10.1016/j.geomorph.2016.01.020 2022-05-25T18:39:09Z Elephant Point is an ice-free area in the SW corner of Livingston Island (Maritime Antarctica). The retreat of Rotch Dome glacier during the Holocene has exposed a land area of 1.16 km2 . Up to 17.3% of this surface has become ice-free between 1956 and 2010. A detailed geomorphological mapping of this ice-free environment was conducted in late January 2014. A wide range of active periglacial landforms show that periglacial processes are widespread. From the glacier to the coast four different geomorphological areas are identified: proglacial environment, moraine complex, bedrock plateaus and marine terraces. In situ measurements of the thawed soil depth show evidence of the widespread frozen ground conditions in the area. Field observations of permafrost exposures suggest that these frost conditions may be related to a soil permafrost regime, almost down to sea level. The activity of penguin colonies and elephant seals has created minor geomorphological features in the raised marine terraces. Here, several archaeological sites related to early human colonization of Antarctica were also found in natural shelters. info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper Antarc* Antarctica Elephant Seals Ice Livingston Island permafrost South Shetland Islands Universidade de Lisboa: repositório.UL Dome Glacier ENVELOPE(-94.068,-94.068,79.452,79.452) Elephant Point ENVELOPE(-60.857,-60.857,-62.692,-62.692) Livingston Island ENVELOPE(-60.500,-60.500,-62.600,-62.600) Rotch ENVELOPE(-60.883,-60.883,-62.633,-62.633) Rotch Dome ENVELOPE(-60.883,-60.883,-62.633,-62.633) South Shetland Islands Geomorphology 293 368 379 |
institution |
Open Polar |
collection |
Universidade de Lisboa: repositório.UL |
op_collection_id |
ftunivlisboa |
language |
English |
topic |
Elephant Point Maritime Antarctica Geomorphology Frozen ground Permafrost |
spellingShingle |
Elephant Point Maritime Antarctica Geomorphology Frozen ground Permafrost Oliva, Marc Ruiz-Fernández, Jesús Geomorphological processes and frozen ground conditions in Elephant Point (Livingston Island, South Shetland Islands, Antarctica) |
topic_facet |
Elephant Point Maritime Antarctica Geomorphology Frozen ground Permafrost |
description |
Elephant Point is an ice-free area in the SW corner of Livingston Island (Maritime Antarctica). The retreat of Rotch Dome glacier during the Holocene has exposed a land area of 1.16 km2 . Up to 17.3% of this surface has become ice-free between 1956 and 2010. A detailed geomorphological mapping of this ice-free environment was conducted in late January 2014. A wide range of active periglacial landforms show that periglacial processes are widespread. From the glacier to the coast four different geomorphological areas are identified: proglacial environment, moraine complex, bedrock plateaus and marine terraces. In situ measurements of the thawed soil depth show evidence of the widespread frozen ground conditions in the area. Field observations of permafrost exposures suggest that these frost conditions may be related to a soil permafrost regime, almost down to sea level. The activity of penguin colonies and elephant seals has created minor geomorphological features in the raised marine terraces. Here, several archaeological sites related to early human colonization of Antarctica were also found in natural shelters. info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
Oliva, Marc Ruiz-Fernández, Jesús |
author_facet |
Oliva, Marc Ruiz-Fernández, Jesús |
author_sort |
Oliva, Marc |
title |
Geomorphological processes and frozen ground conditions in Elephant Point (Livingston Island, South Shetland Islands, Antarctica) |
title_short |
Geomorphological processes and frozen ground conditions in Elephant Point (Livingston Island, South Shetland Islands, Antarctica) |
title_full |
Geomorphological processes and frozen ground conditions in Elephant Point (Livingston Island, South Shetland Islands, Antarctica) |
title_fullStr |
Geomorphological processes and frozen ground conditions in Elephant Point (Livingston Island, South Shetland Islands, Antarctica) |
title_full_unstemmed |
Geomorphological processes and frozen ground conditions in Elephant Point (Livingston Island, South Shetland Islands, Antarctica) |
title_sort |
geomorphological processes and frozen ground conditions in elephant point (livingston island, south shetland islands, antarctica) |
publisher |
Elsevier |
publishDate |
2018 |
url |
http://hdl.handle.net/10451/36212 https://doi.org/10.1016/j.geomorph.2016.01.020 |
long_lat |
ENVELOPE(-94.068,-94.068,79.452,79.452) ENVELOPE(-60.857,-60.857,-62.692,-62.692) ENVELOPE(-60.500,-60.500,-62.600,-62.600) ENVELOPE(-60.883,-60.883,-62.633,-62.633) ENVELOPE(-60.883,-60.883,-62.633,-62.633) |
geographic |
Dome Glacier Elephant Point Livingston Island Rotch Rotch Dome South Shetland Islands |
geographic_facet |
Dome Glacier Elephant Point Livingston Island Rotch Rotch Dome South Shetland Islands |
genre |
Antarc* Antarctica Elephant Seals Ice Livingston Island permafrost South Shetland Islands |
genre_facet |
Antarc* Antarctica Elephant Seals Ice Livingston Island permafrost South Shetland Islands |
op_relation |
https://www.sciencedirect.com/science/article/pii/S0169555X16300204?via%3Dihub Oliva, M., Ruiz-Fernández, J. (2017). Geomorphological processes and frozen ground conditions in Elephant Point (Livingston Island, South Shetland Islands, Antarctica). Geomorphology, 293, 368–379. https://doi.org/10.1016/j.geomorph.2016.01.020. 0169-555X http://hdl.handle.net/10451/36212 doi:10.1016/j.geomorph.2016.01.020 |
op_rights |
embargoedAccess |
op_doi |
https://doi.org/10.1016/j.geomorph.2016.01.020 |
container_title |
Geomorphology |
container_volume |
293 |
container_start_page |
368 |
op_container_end_page |
379 |
_version_ |
1766093852208267264 |