Thermokarst lake monitoring on the Bykovsky Peninsula using high-resolution remote sensing data
Thermokarst lakes are a characteristic element of arctic permafrost regions and an indicator for their rapid landscape changes. Assessing their dynamics contributes to the understanding of driving processes of change, to the evaluation of impacts on landscape characteristics as well as to the estima...
| Main Authors: | , , , |
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| Other Authors: | , , |
| Format: | Conference Object |
| Language: | unknown |
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Laboratoire EDYTEM - UMR5204, Université Savoie Mont Blanc, Bâtiment «Pôle Montagne»
2018
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| Online Access: | https://epic.awi.de/id/eprint/47577/ https://epic.awi.de/id/eprint/47577/1/EUCOP5_2018_Book_of_abstracts_478-479.pdf https://hal.archives-ouvertes.fr/hal-01816115/document https://hdl.handle.net/10013/epic.cb51f4ce-87a8-4b42-ba52-0e9e5be09632 https://hdl.handle.net/ |
| Summary: | Thermokarst lakes are a characteristic element of arctic permafrost regions and an indicator for their rapid landscape changes. Assessing their dynamics contributes to the understanding of driving processes of change, to the evaluation of impacts on landscape characteristics as well as to the estimation of the impact on the permafrost-related carbon budget. Monitoring thermokarst lake dynamics on the Bykovsky Peninsula, consisting of ice-rich Yedoma deposits, using high resolution remote sensing imagery from 1951 to 2016, revealed a long-term tendency towards lake drainage. Approximately 17% of the 1951 lake area was lost due to coastal erosion or the development of drainage networks. In parallel, coastal erosion driven land loss amounts to 2.3% of the peninsula. We find process interconnections between coastal erosion and lake change, as well as lake change dependency on land elevation in a developed alas-yedoma thermokarst relief. |
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