Evolution of thermokarst in East Siberian ice-rich permafrost
Thermokarst lakes and basins are major components of ice-rich permafrost landscapes in East Siberian coastal lowlands and are regarded as indicators of regional climatic changes. We investigate the temporal and spatial dynamics of a 7.5 km**2, partly drained thermokarst basin (alas) using field inve...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.848491 2024-09-15T18:11:27+00:00 Evolution of thermokarst in East Siberian ice-rich permafrost Morgenstern, Anne Ulrich, Mathias Günther, Frank Roessler, Sebastian Fedorova, Irina V Rudaya, Natalia Wetterich, Sebastian Boike, Julia Schirrmeister, Lutz MEDIAN LATITUDE: 72.318277 * MEDIAN LONGITUDE: 126.206736 * SOUTH-BOUND LATITUDE: 72.306528 * WEST-BOUND LONGITUDE: 126.177830 * NORTH-BOUND LATITUDE: 72.328690 * EAST-BOUND LONGITUDE: 126.258386 * DATE/TIME START: 2008-05-15T00:00:00 * DATE/TIME END: 2011-07-29T06:00:00 2013 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.848491 https://doi.org/10.1594/PANGAEA.848491 en eng PANGAEA Morgenstern, Anne; Grosse, Guido; Günther, Frank; Fedorova, Irina V; Schirrmeister, Lutz (2011): Spatial analyses of thermokarst lakes and basins in Yedoma landscapes of the Lena Delta. The Cryosphere, 5(4), 849-867, https://doi.org/10.5194/tc-5-849-2011 https://doi.pangaea.de/10.1594/PANGAEA.848491 https://doi.org/10.1594/PANGAEA.848491 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Morgenstern, Anne; Ulrich, Mathias; Günther, Frank; Roessler, Sebastian; Fedorova, Irina V; Rudaya, Natalia; Wetterich, Sebastian; Boike, Julia; Schirrmeister, Lutz (2013): Evolution of thermokarst in East Siberian ice-rich permafrost: A case study. Geomorphology, 201, 363-379, https://doi.org/10.1016/j.geomorph.2013.07.011 AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI dataset publication series 2013 ftpangaea https://doi.org/10.1594/PANGAEA.84849110.1016/j.geomorph.2013.07.01110.5194/tc-5-849-2011 2024-07-24T02:31:21Z Thermokarst lakes and basins are major components of ice-rich permafrost landscapes in East Siberian coastal lowlands and are regarded as indicators of regional climatic changes. We investigate the temporal and spatial dynamics of a 7.5 km**2, partly drained thermokarst basin (alas) using field investigations, remote sensing, Geographic Information Systems (GIS), and sediment analyses. The evolution of the thermokarst basin proceeded in two phases. The first phase started at the Pleistocene/Holocene transition (13 to 12 ka BP) with the initiation of a primary thermokarst lake on the Ice Complex surface. The lake expanded and persisted throughout the early Holocene before it drained abruptly about 5.7 ka BP, thereby creating a > 20 m deep alas with residual lakes. The second phase (5.7 ka BP to present) is characterized by alternating stages of lower and higher thermokarst intensity within the alas that were mainly controlled by local hydrological and relief conditions and accompanied by permafrost aggradation and degradation. It included diverse concurrent processes like lake expansion and stepwise drainage, polygonal ice-wedge growth, and the formation of drainage channels and a pingo, which occurred in different parts of the alas. This more dynamic thermokarst evolution resulted in a complex modern thermokarst landscape. However, on the regional scale, the changes during the second evolutionary phase after drainage of the initial thermokarst lakes were less intense than the early Holocene extensive thermokarst development in East Siberian coastal lowlands as a result of a significant regional change to warmer and wetter climate conditions. Other/Unknown Material Ice permafrost The Cryosphere Thermokarst wedge* PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(126.177830,126.258386,72.328690,72.306528) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI |
spellingShingle |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI Morgenstern, Anne Ulrich, Mathias Günther, Frank Roessler, Sebastian Fedorova, Irina V Rudaya, Natalia Wetterich, Sebastian Boike, Julia Schirrmeister, Lutz Evolution of thermokarst in East Siberian ice-rich permafrost |
topic_facet |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI |
description |
Thermokarst lakes and basins are major components of ice-rich permafrost landscapes in East Siberian coastal lowlands and are regarded as indicators of regional climatic changes. We investigate the temporal and spatial dynamics of a 7.5 km**2, partly drained thermokarst basin (alas) using field investigations, remote sensing, Geographic Information Systems (GIS), and sediment analyses. The evolution of the thermokarst basin proceeded in two phases. The first phase started at the Pleistocene/Holocene transition (13 to 12 ka BP) with the initiation of a primary thermokarst lake on the Ice Complex surface. The lake expanded and persisted throughout the early Holocene before it drained abruptly about 5.7 ka BP, thereby creating a > 20 m deep alas with residual lakes. The second phase (5.7 ka BP to present) is characterized by alternating stages of lower and higher thermokarst intensity within the alas that were mainly controlled by local hydrological and relief conditions and accompanied by permafrost aggradation and degradation. It included diverse concurrent processes like lake expansion and stepwise drainage, polygonal ice-wedge growth, and the formation of drainage channels and a pingo, which occurred in different parts of the alas. This more dynamic thermokarst evolution resulted in a complex modern thermokarst landscape. However, on the regional scale, the changes during the second evolutionary phase after drainage of the initial thermokarst lakes were less intense than the early Holocene extensive thermokarst development in East Siberian coastal lowlands as a result of a significant regional change to warmer and wetter climate conditions. |
format |
Other/Unknown Material |
author |
Morgenstern, Anne Ulrich, Mathias Günther, Frank Roessler, Sebastian Fedorova, Irina V Rudaya, Natalia Wetterich, Sebastian Boike, Julia Schirrmeister, Lutz |
author_facet |
Morgenstern, Anne Ulrich, Mathias Günther, Frank Roessler, Sebastian Fedorova, Irina V Rudaya, Natalia Wetterich, Sebastian Boike, Julia Schirrmeister, Lutz |
author_sort |
Morgenstern, Anne |
title |
Evolution of thermokarst in East Siberian ice-rich permafrost |
title_short |
Evolution of thermokarst in East Siberian ice-rich permafrost |
title_full |
Evolution of thermokarst in East Siberian ice-rich permafrost |
title_fullStr |
Evolution of thermokarst in East Siberian ice-rich permafrost |
title_full_unstemmed |
Evolution of thermokarst in East Siberian ice-rich permafrost |
title_sort |
evolution of thermokarst in east siberian ice-rich permafrost |
publisher |
PANGAEA |
publishDate |
2013 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.848491 https://doi.org/10.1594/PANGAEA.848491 |
op_coverage |
MEDIAN LATITUDE: 72.318277 * MEDIAN LONGITUDE: 126.206736 * SOUTH-BOUND LATITUDE: 72.306528 * WEST-BOUND LONGITUDE: 126.177830 * NORTH-BOUND LATITUDE: 72.328690 * EAST-BOUND LONGITUDE: 126.258386 * DATE/TIME START: 2008-05-15T00:00:00 * DATE/TIME END: 2011-07-29T06:00:00 |
long_lat |
ENVELOPE(126.177830,126.258386,72.328690,72.306528) |
genre |
Ice permafrost The Cryosphere Thermokarst wedge* |
genre_facet |
Ice permafrost The Cryosphere Thermokarst wedge* |
op_source |
Supplement to: Morgenstern, Anne; Ulrich, Mathias; Günther, Frank; Roessler, Sebastian; Fedorova, Irina V; Rudaya, Natalia; Wetterich, Sebastian; Boike, Julia; Schirrmeister, Lutz (2013): Evolution of thermokarst in East Siberian ice-rich permafrost: A case study. Geomorphology, 201, 363-379, https://doi.org/10.1016/j.geomorph.2013.07.011 |
op_relation |
Morgenstern, Anne; Grosse, Guido; Günther, Frank; Fedorova, Irina V; Schirrmeister, Lutz (2011): Spatial analyses of thermokarst lakes and basins in Yedoma landscapes of the Lena Delta. The Cryosphere, 5(4), 849-867, https://doi.org/10.5194/tc-5-849-2011 https://doi.pangaea.de/10.1594/PANGAEA.848491 https://doi.org/10.1594/PANGAEA.848491 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.84849110.1016/j.geomorph.2013.07.01110.5194/tc-5-849-2011 |
_version_ |
1810449052683206656 |