Soil and permafrost in the Ross Sea Region of Antarctica: Stable or dynamic?
Soils in the Ross Sea Region of Antarctica generally comprise a surface desert pavement and a seasonally thawed active layer over permafrost. Most soils are formed on regolith such as glacial till or colluvium. Mean annual air temperatures range from -18°C to -24°C with low precipitation. The active...
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Online Access: | https://hdl.handle.net/10289/10317 https://doi.org/10.18172/cig.2923 |
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ftunivwaikato:oai:researchcommons.waikato.ac.nz:10289/10317 2023-07-30T03:59:07+02:00 Soil and permafrost in the Ross Sea Region of Antarctica: Stable or dynamic? Balks, Megan R. O'Neill, Tanya Ann 2016 application/pdf https://hdl.handle.net/10289/10317 https://doi.org/10.18172/cig.2923 en eng Universidad de La Rioja https://publicaciones.unirioja.es/ojs/index.php/cig/article/view/2923 Cuadernos de Investigacion Geografica Balks, M. R., & O’Neill, T. A. (2016). Soil and permafrost in the Ross Sea Region of Antarctica: Stable or dynamic? Cuadernos De Investigacion Geografica, 42(2). http://doi.org/10.18172/cig.2923 0211-6820 https://hdl.handle.net/10289/10317 doi:10.18172/cig.2923 This article is published under a Creative Commons Attribution-NonComercial-NonDerivs 3.0 Unported license (legal text). cryosol gelisol soil temperature geomorphic processes Journal Article 2016 ftunivwaikato https://doi.org/10.18172/cig.2923 2023-07-18T17:21:31Z Soils in the Ross Sea Region of Antarctica generally comprise a surface desert pavement and a seasonally thawed active layer over permafrost. Most soils are formed on regolith such as glacial till or colluvium. Mean annual air temperatures range from -18°C to -24°C with low precipitation. The active layer ranges in depth from minimal in higher altitude, colder sites, to near 1 m deep at warmer coastal sites in the northern part of the region. Underlying permafrost may be ice-cemented, or dry with no ice cement. In some areas ice-cored moraine occurs where there is a large body of ice within the subsoil permafrost. Two examples of active gully/fan -forming events, one at Cape Evans and one at Lake Vanda are described. At the Cape Evans event water from a small lake thawed and came into contact with the ice in the underlying patterned ground ice-wedge causing the ice-wedge to melt and extensive gully erosion to occur. A fan-building event near Lake Vanda in the Wright Valley resulted in erosive and depositional features covering a horizontal distance of about 3 km and an altitudinal range of about 1400 m. Such occasional events, can be attributed to warmer than average summers, and were first described in the Ross Sea Region in the 1970s. The Cape Evans and Lake Vanda events are examples of active, rapid, landscape processes and show that landscapes are not as static as is often assumed. Article in Journal/Newspaper Antarc* Antarctica Ice permafrost Ross Sea wedge* The University of Waikato: Research Commons Ross Sea Vanda ENVELOPE(161.550,161.550,-77.533,-77.533) Wright Valley ENVELOPE(161.833,161.833,-77.517,-77.517) Lake Vanda ENVELOPE(161.600,161.600,-77.517,-77.517) Cape Evans ENVELOPE(161.550,161.550,-75.100,-75.100) Cuadernos de Investigación Geográfica 42 2 415 |
institution |
Open Polar |
collection |
The University of Waikato: Research Commons |
op_collection_id |
ftunivwaikato |
language |
English |
topic |
cryosol gelisol soil temperature geomorphic processes |
spellingShingle |
cryosol gelisol soil temperature geomorphic processes Balks, Megan R. O'Neill, Tanya Ann Soil and permafrost in the Ross Sea Region of Antarctica: Stable or dynamic? |
topic_facet |
cryosol gelisol soil temperature geomorphic processes |
description |
Soils in the Ross Sea Region of Antarctica generally comprise a surface desert pavement and a seasonally thawed active layer over permafrost. Most soils are formed on regolith such as glacial till or colluvium. Mean annual air temperatures range from -18°C to -24°C with low precipitation. The active layer ranges in depth from minimal in higher altitude, colder sites, to near 1 m deep at warmer coastal sites in the northern part of the region. Underlying permafrost may be ice-cemented, or dry with no ice cement. In some areas ice-cored moraine occurs where there is a large body of ice within the subsoil permafrost. Two examples of active gully/fan -forming events, one at Cape Evans and one at Lake Vanda are described. At the Cape Evans event water from a small lake thawed and came into contact with the ice in the underlying patterned ground ice-wedge causing the ice-wedge to melt and extensive gully erosion to occur. A fan-building event near Lake Vanda in the Wright Valley resulted in erosive and depositional features covering a horizontal distance of about 3 km and an altitudinal range of about 1400 m. Such occasional events, can be attributed to warmer than average summers, and were first described in the Ross Sea Region in the 1970s. The Cape Evans and Lake Vanda events are examples of active, rapid, landscape processes and show that landscapes are not as static as is often assumed. |
format |
Article in Journal/Newspaper |
author |
Balks, Megan R. O'Neill, Tanya Ann |
author_facet |
Balks, Megan R. O'Neill, Tanya Ann |
author_sort |
Balks, Megan R. |
title |
Soil and permafrost in the Ross Sea Region of Antarctica: Stable or dynamic? |
title_short |
Soil and permafrost in the Ross Sea Region of Antarctica: Stable or dynamic? |
title_full |
Soil and permafrost in the Ross Sea Region of Antarctica: Stable or dynamic? |
title_fullStr |
Soil and permafrost in the Ross Sea Region of Antarctica: Stable or dynamic? |
title_full_unstemmed |
Soil and permafrost in the Ross Sea Region of Antarctica: Stable or dynamic? |
title_sort |
soil and permafrost in the ross sea region of antarctica: stable or dynamic? |
publisher |
Universidad de La Rioja |
publishDate |
2016 |
url |
https://hdl.handle.net/10289/10317 https://doi.org/10.18172/cig.2923 |
long_lat |
ENVELOPE(161.550,161.550,-77.533,-77.533) ENVELOPE(161.833,161.833,-77.517,-77.517) ENVELOPE(161.600,161.600,-77.517,-77.517) ENVELOPE(161.550,161.550,-75.100,-75.100) |
geographic |
Ross Sea Vanda Wright Valley Lake Vanda Cape Evans |
geographic_facet |
Ross Sea Vanda Wright Valley Lake Vanda Cape Evans |
genre |
Antarc* Antarctica Ice permafrost Ross Sea wedge* |
genre_facet |
Antarc* Antarctica Ice permafrost Ross Sea wedge* |
op_relation |
https://publicaciones.unirioja.es/ojs/index.php/cig/article/view/2923 Cuadernos de Investigacion Geografica Balks, M. R., & O’Neill, T. A. (2016). Soil and permafrost in the Ross Sea Region of Antarctica: Stable or dynamic? Cuadernos De Investigacion Geografica, 42(2). http://doi.org/10.18172/cig.2923 0211-6820 https://hdl.handle.net/10289/10317 doi:10.18172/cig.2923 |
op_rights |
This article is published under a Creative Commons Attribution-NonComercial-NonDerivs 3.0 Unported license (legal text). |
op_doi |
https://doi.org/10.18172/cig.2923 |
container_title |
Cuadernos de Investigación Geográfica |
container_volume |
42 |
container_issue |
2 |
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415 |
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