Observations on the relationship between lake formation, permafrost activity and lithalsa development during the last 20 000 years in the Tso Kar basin, Ladakh, India
Abstract A close relationship has existed between high mountain permafrost and lake history in the Tso Kar basin, Ladakh, India throughout the last 20 kyr BP. Analyses of sediment cores indicate phases of permafrost growth during low lake levels between >20–10 cal. kyr BP and after 5 cal. kyr BP....
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crwiley:10.1002/ppp.631 2024-10-13T14:07:57+00:00 Observations on the relationship between lake formation, permafrost activity and lithalsa development during the last 20 000 years in the Tso Kar basin, Ladakh, India Wünnemann, Bernd Reinhardt, Christian Kotlia, Bahadur S. Riedel, Frank Deutsche Forschungsgemeinschaft, Germany 2008 http://dx.doi.org/10.1002/ppp.631 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.631 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.631 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 19, issue 4, page 341-358 ISSN 1045-6740 1099-1530 journal-article 2008 crwiley https://doi.org/10.1002/ppp.631 2024-09-27T04:16:54Z Abstract A close relationship has existed between high mountain permafrost and lake history in the Tso Kar basin, Ladakh, India throughout the last 20 kyr BP. Analyses of sediment cores indicate phases of permafrost growth during low lake levels between >20–10 cal. kyr BP and after 5 cal. kyr BP. Palaeo‐shorelines and lake carbonate outcrops indicate a maximum lake size at ca. 8–5 cal. kyr BP when permafrost is believed to have been absent in the basin. Regression of the lake with accompanying salinisation since about 4 cal. kyr BP allowed permafrost aggradation. Permafrost mounds and thermokarst features are inferred to have continued to develop in the last 60 years. Sections in two 6–10 m high unvegetated mounds revealed thick ice lenses and reticulate cryostructures leading to their classification as lithalsas. Mound collapse is induced by surface erosion and slumping, while sediment reworking by wave action and other processes appears to prevent rampart formation. If lake levels continue to fall, further permafrost aggradation is expected in this high elevation enclosed basin. Copyright © 2008 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Thermokarst Wiley Online Library Low Lake ENVELOPE(142.677,142.677,-66.993,-66.993) Permafrost and Periglacial Processes 19 4 341 358 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract A close relationship has existed between high mountain permafrost and lake history in the Tso Kar basin, Ladakh, India throughout the last 20 kyr BP. Analyses of sediment cores indicate phases of permafrost growth during low lake levels between >20–10 cal. kyr BP and after 5 cal. kyr BP. Palaeo‐shorelines and lake carbonate outcrops indicate a maximum lake size at ca. 8–5 cal. kyr BP when permafrost is believed to have been absent in the basin. Regression of the lake with accompanying salinisation since about 4 cal. kyr BP allowed permafrost aggradation. Permafrost mounds and thermokarst features are inferred to have continued to develop in the last 60 years. Sections in two 6–10 m high unvegetated mounds revealed thick ice lenses and reticulate cryostructures leading to their classification as lithalsas. Mound collapse is induced by surface erosion and slumping, while sediment reworking by wave action and other processes appears to prevent rampart formation. If lake levels continue to fall, further permafrost aggradation is expected in this high elevation enclosed basin. Copyright © 2008 John Wiley & Sons, Ltd. |
author2 |
Deutsche Forschungsgemeinschaft, Germany |
format |
Article in Journal/Newspaper |
author |
Wünnemann, Bernd Reinhardt, Christian Kotlia, Bahadur S. Riedel, Frank |
spellingShingle |
Wünnemann, Bernd Reinhardt, Christian Kotlia, Bahadur S. Riedel, Frank Observations on the relationship between lake formation, permafrost activity and lithalsa development during the last 20 000 years in the Tso Kar basin, Ladakh, India |
author_facet |
Wünnemann, Bernd Reinhardt, Christian Kotlia, Bahadur S. Riedel, Frank |
author_sort |
Wünnemann, Bernd |
title |
Observations on the relationship between lake formation, permafrost activity and lithalsa development during the last 20 000 years in the Tso Kar basin, Ladakh, India |
title_short |
Observations on the relationship between lake formation, permafrost activity and lithalsa development during the last 20 000 years in the Tso Kar basin, Ladakh, India |
title_full |
Observations on the relationship between lake formation, permafrost activity and lithalsa development during the last 20 000 years in the Tso Kar basin, Ladakh, India |
title_fullStr |
Observations on the relationship between lake formation, permafrost activity and lithalsa development during the last 20 000 years in the Tso Kar basin, Ladakh, India |
title_full_unstemmed |
Observations on the relationship between lake formation, permafrost activity and lithalsa development during the last 20 000 years in the Tso Kar basin, Ladakh, India |
title_sort |
observations on the relationship between lake formation, permafrost activity and lithalsa development during the last 20 000 years in the tso kar basin, ladakh, india |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1002/ppp.631 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.631 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.631 |
long_lat |
ENVELOPE(142.677,142.677,-66.993,-66.993) |
geographic |
Low Lake |
geographic_facet |
Low Lake |
genre |
Ice permafrost Permafrost and Periglacial Processes Thermokarst |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes Thermokarst |
op_source |
Permafrost and Periglacial Processes volume 19, issue 4, page 341-358 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.631 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
19 |
container_issue |
4 |
container_start_page |
341 |
op_container_end_page |
358 |
_version_ |
1812814534070501376 |