Holocene thermokarst and pingo development in the Kolyma Lowland (NE Siberia)
© 2018 John Wiley & Sons, Ltd. Ground ice and sedimentary records of a pingo exposure reveal insights into Holocene permafrost, landscape and climate dynamics. Early to mid-Holocene thermokarst lake deposits contain rich floral and faunal paleoassemblages, which indicate lake shrinkage and decre...
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ftkazanuniv:oai:dspace.kpfu.ru:net/148240 2023-05-15T16:36:57+02:00 Holocene thermokarst and pingo development in the Kolyma Lowland (NE Siberia) Wetterich S. Schirrmeister L. Nazarova L. Palagushkina O. Bobrov A. Pogosyan L. Savelieva L. Syrykh L. Matthes H. Fritz M. Günther F. Opel T. Meyer H. 2018 https://dspace.kpfu.ru/xmlui/handle/net/148240 unknown Permafrost and Periglacial Processes 3 29 182 1045-6740 https://dspace.kpfu.ru/xmlui/handle/net/148240 SCOPUS10456740-2018-29-3-SID85050799249 bioindicators cryolithology hydrochemistry Khalerchinskaya tundra stable water isotopes Article 2018 ftkazanuniv 2022-01-01T09:50:32Z © 2018 John Wiley & Sons, Ltd. Ground ice and sedimentary records of a pingo exposure reveal insights into Holocene permafrost, landscape and climate dynamics. Early to mid-Holocene thermokarst lake deposits contain rich floral and faunal paleoassemblages, which indicate lake shrinkage and decreasing summer temperatures (chironomid-based TJuly) from 10.5 to 3.5 cal kyr BP with the warmest period between 10.5 and 8 cal kyr BP. Talik refreezing and pingo growth started about 3.5 cal kyr BP after disappearance of the lake. The isotopic composition of the pingo ice (δ18O − 17.1 ± 0.6‰, δD −144.5 ± 3.4‰, slope 5.85, deuterium excess −7.7± 1.5‰) point to the initial stage of closed-system freezing captured in the record. A differing isotopic composition within the massive ice body was found (δ18O − 21.3 ± 1.4‰, δD −165 ± 11.5‰, slope 8.13, deuterium excess 4.9± 3.2‰), probably related to the infill of dilation cracks by surface water with quasi-meteoric signature. Currently inactive syngenetic ice wedges formed in the thermokarst basin after lake drainage. The pingo preserves traces of permafrost response to climate variations in terms of ground-ice degradation (thermokarst) during the early and mid-Holocene, and aggradation (wedge-ice and pingo-ice growth) during the late Holocene. Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Thermokarst Tundra wedge* Siberia Kazan Federal University Digital Repository Kolyma ENVELOPE(161.000,161.000,69.500,69.500) Talik ENVELOPE(146.601,146.601,59.667,59.667) |
institution |
Open Polar |
collection |
Kazan Federal University Digital Repository |
op_collection_id |
ftkazanuniv |
language |
unknown |
topic |
bioindicators cryolithology hydrochemistry Khalerchinskaya tundra stable water isotopes |
spellingShingle |
bioindicators cryolithology hydrochemistry Khalerchinskaya tundra stable water isotopes Wetterich S. Schirrmeister L. Nazarova L. Palagushkina O. Bobrov A. Pogosyan L. Savelieva L. Syrykh L. Matthes H. Fritz M. Günther F. Opel T. Meyer H. Holocene thermokarst and pingo development in the Kolyma Lowland (NE Siberia) |
topic_facet |
bioindicators cryolithology hydrochemistry Khalerchinskaya tundra stable water isotopes |
description |
© 2018 John Wiley & Sons, Ltd. Ground ice and sedimentary records of a pingo exposure reveal insights into Holocene permafrost, landscape and climate dynamics. Early to mid-Holocene thermokarst lake deposits contain rich floral and faunal paleoassemblages, which indicate lake shrinkage and decreasing summer temperatures (chironomid-based TJuly) from 10.5 to 3.5 cal kyr BP with the warmest period between 10.5 and 8 cal kyr BP. Talik refreezing and pingo growth started about 3.5 cal kyr BP after disappearance of the lake. The isotopic composition of the pingo ice (δ18O − 17.1 ± 0.6‰, δD −144.5 ± 3.4‰, slope 5.85, deuterium excess −7.7± 1.5‰) point to the initial stage of closed-system freezing captured in the record. A differing isotopic composition within the massive ice body was found (δ18O − 21.3 ± 1.4‰, δD −165 ± 11.5‰, slope 8.13, deuterium excess 4.9± 3.2‰), probably related to the infill of dilation cracks by surface water with quasi-meteoric signature. Currently inactive syngenetic ice wedges formed in the thermokarst basin after lake drainage. The pingo preserves traces of permafrost response to climate variations in terms of ground-ice degradation (thermokarst) during the early and mid-Holocene, and aggradation (wedge-ice and pingo-ice growth) during the late Holocene. |
format |
Article in Journal/Newspaper |
author |
Wetterich S. Schirrmeister L. Nazarova L. Palagushkina O. Bobrov A. Pogosyan L. Savelieva L. Syrykh L. Matthes H. Fritz M. Günther F. Opel T. Meyer H. |
author_facet |
Wetterich S. Schirrmeister L. Nazarova L. Palagushkina O. Bobrov A. Pogosyan L. Savelieva L. Syrykh L. Matthes H. Fritz M. Günther F. Opel T. Meyer H. |
author_sort |
Wetterich S. |
title |
Holocene thermokarst and pingo development in the Kolyma Lowland (NE Siberia) |
title_short |
Holocene thermokarst and pingo development in the Kolyma Lowland (NE Siberia) |
title_full |
Holocene thermokarst and pingo development in the Kolyma Lowland (NE Siberia) |
title_fullStr |
Holocene thermokarst and pingo development in the Kolyma Lowland (NE Siberia) |
title_full_unstemmed |
Holocene thermokarst and pingo development in the Kolyma Lowland (NE Siberia) |
title_sort |
holocene thermokarst and pingo development in the kolyma lowland (ne siberia) |
publishDate |
2018 |
url |
https://dspace.kpfu.ru/xmlui/handle/net/148240 |
long_lat |
ENVELOPE(161.000,161.000,69.500,69.500) ENVELOPE(146.601,146.601,59.667,59.667) |
geographic |
Kolyma Talik |
geographic_facet |
Kolyma Talik |
genre |
Ice permafrost Permafrost and Periglacial Processes Thermokarst Tundra wedge* Siberia |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes Thermokarst Tundra wedge* Siberia |
op_source |
SCOPUS10456740-2018-29-3-SID85050799249 |
op_relation |
Permafrost and Periglacial Processes 3 29 182 1045-6740 https://dspace.kpfu.ru/xmlui/handle/net/148240 |
_version_ |
1766027272857321472 |