Monitoring Inter- and Intra-Seasonal Dynamics of Rapidly Degrading Ice-Rich Permafrost Riverbanks in the Lena Delta with TerraSAR-X Time Series
Arctic warming is leading to substantial changes to permafrost including rapid degradation of ice and ice-rich coasts and riverbanks. In this study, we present and evaluate a high spatiotemporal resolution three-year time series of X-Band microwave satellite data from the TerraSAR-X (TSX) satellite...
Published in: | Remote Sensing |
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Multidisciplinary Digital Publishing Institute
2017
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Online Access: | https://epic.awi.de/id/eprint/46300/ https://epic.awi.de/id/eprint/46300/1/Stettner_etal_2017_Remote_Sensing_10-00051.pdf http://www.mdpi.com/2072-4292/10/1/51 https://hdl.handle.net/10013/epic.d93537c6-cef2-481a-98bd-8862dfbcd6c0 https://hdl.handle.net/ |
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ftawi:oai:epic.awi.de:46300 2023-05-15T15:15:06+02:00 Monitoring Inter- and Intra-Seasonal Dynamics of Rapidly Degrading Ice-Rich Permafrost Riverbanks in the Lena Delta with TerraSAR-X Time Series Stettner, Samuel Beamish, Alison Bartsch, Annett Heim, Birgit Grosse, Guido Roth, Achim Lantuit, Hugues 2017-12-29 application/pdf https://epic.awi.de/id/eprint/46300/ https://epic.awi.de/id/eprint/46300/1/Stettner_etal_2017_Remote_Sensing_10-00051.pdf http://www.mdpi.com/2072-4292/10/1/51 https://hdl.handle.net/10013/epic.d93537c6-cef2-481a-98bd-8862dfbcd6c0 https://hdl.handle.net/ unknown Multidisciplinary Digital Publishing Institute https://epic.awi.de/id/eprint/46300/1/Stettner_etal_2017_Remote_Sensing_10-00051.pdf https://hdl.handle.net/ Stettner, S. orcid:0000-0001-5278-7931 , Beamish, A. , Bartsch, A. , Heim, B. orcid:0000-0003-2614-9391 , Grosse, G. orcid:0000-0001-5895-2141 , Roth, A. and Lantuit, H. orcid:0000-0003-1497-6760 (2017) Monitoring Inter- and Intra-Seasonal Dynamics of Rapidly Degrading Ice-Rich Permafrost Riverbanks in the Lena Delta with TerraSAR-X Time Series , Remote Sensing, 10 (1) . doi:10.3390/rs10010051 <https://doi.org/10.3390/rs10010051> , hdl:10013/epic.d93537c6-cef2-481a-98bd-8862dfbcd6c0 EPIC3Remote Sensing, Multidisciplinary Digital Publishing Institute, 10(1), ISSN: 2072-4292 Article isiRev 2017 ftawi https://doi.org/10.3390/rs10010051 2021-12-24T15:43:37Z Arctic warming is leading to substantial changes to permafrost including rapid degradation of ice and ice-rich coasts and riverbanks. In this study, we present and evaluate a high spatiotemporal resolution three-year time series of X-Band microwave satellite data from the TerraSAR-X (TSX) satellite to quantify cliff-top erosion (CTE) of an ice-rich permafrost riverbank in the central Lena Delta. We apply a threshold on TSX backscatter images and automatically extract cliff-top lines to derive intra- and inter-annual CTE. In order to examine the drivers of erosion we statistically compare CTE with climatic baseline data using linear mixed models and analysis of variance (ANOVA). Our evaluation of TSX-derived CTE against annual optical-derived CTE and seasonal in situ measurements showed good agreement between all three datasets. We observed continuous erosion from June to September in 2014 and 2015 with no significant seasonality across the thawing season. We found the highest net annual cliff-top erosion of 6.9 m in 2014, in accordance with above-average mean temperatures and thawing degree days as well as low precipitation. We found high net annual erosion and erosion variability in 2015 associated with moderate mean temperatures but above average precipitation. According to linear mixed models, climate parameters alone could not explain intra-seasonal erosional patterns and additional factors such as ground ice content likely drive the observed erosion. Finally, mean backscatter intensity on the cliff surface decreased from −5.29 to −6.69 dB from 2013 to 2015, respectively, likely resulting from changes in surface geometry and properties that could be connected to partial slope stabilization. Overall, we conclude that X-Band backscatter time series can successfully be used to complement optical remote sensing and in situ monitoring of rapid tundra permafrost erosion at riverbanks and coasts by reliably providing information about intra-seasonal dynamics. Article in Journal/Newspaper Arctic Ice lena delta permafrost Tundra Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Remote Sensing 10 2 51 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Arctic warming is leading to substantial changes to permafrost including rapid degradation of ice and ice-rich coasts and riverbanks. In this study, we present and evaluate a high spatiotemporal resolution three-year time series of X-Band microwave satellite data from the TerraSAR-X (TSX) satellite to quantify cliff-top erosion (CTE) of an ice-rich permafrost riverbank in the central Lena Delta. We apply a threshold on TSX backscatter images and automatically extract cliff-top lines to derive intra- and inter-annual CTE. In order to examine the drivers of erosion we statistically compare CTE with climatic baseline data using linear mixed models and analysis of variance (ANOVA). Our evaluation of TSX-derived CTE against annual optical-derived CTE and seasonal in situ measurements showed good agreement between all three datasets. We observed continuous erosion from June to September in 2014 and 2015 with no significant seasonality across the thawing season. We found the highest net annual cliff-top erosion of 6.9 m in 2014, in accordance with above-average mean temperatures and thawing degree days as well as low precipitation. We found high net annual erosion and erosion variability in 2015 associated with moderate mean temperatures but above average precipitation. According to linear mixed models, climate parameters alone could not explain intra-seasonal erosional patterns and additional factors such as ground ice content likely drive the observed erosion. Finally, mean backscatter intensity on the cliff surface decreased from −5.29 to −6.69 dB from 2013 to 2015, respectively, likely resulting from changes in surface geometry and properties that could be connected to partial slope stabilization. Overall, we conclude that X-Band backscatter time series can successfully be used to complement optical remote sensing and in situ monitoring of rapid tundra permafrost erosion at riverbanks and coasts by reliably providing information about intra-seasonal dynamics. |
format |
Article in Journal/Newspaper |
author |
Stettner, Samuel Beamish, Alison Bartsch, Annett Heim, Birgit Grosse, Guido Roth, Achim Lantuit, Hugues |
spellingShingle |
Stettner, Samuel Beamish, Alison Bartsch, Annett Heim, Birgit Grosse, Guido Roth, Achim Lantuit, Hugues Monitoring Inter- and Intra-Seasonal Dynamics of Rapidly Degrading Ice-Rich Permafrost Riverbanks in the Lena Delta with TerraSAR-X Time Series |
author_facet |
Stettner, Samuel Beamish, Alison Bartsch, Annett Heim, Birgit Grosse, Guido Roth, Achim Lantuit, Hugues |
author_sort |
Stettner, Samuel |
title |
Monitoring Inter- and Intra-Seasonal Dynamics of Rapidly Degrading Ice-Rich Permafrost Riverbanks in the Lena Delta with TerraSAR-X Time Series |
title_short |
Monitoring Inter- and Intra-Seasonal Dynamics of Rapidly Degrading Ice-Rich Permafrost Riverbanks in the Lena Delta with TerraSAR-X Time Series |
title_full |
Monitoring Inter- and Intra-Seasonal Dynamics of Rapidly Degrading Ice-Rich Permafrost Riverbanks in the Lena Delta with TerraSAR-X Time Series |
title_fullStr |
Monitoring Inter- and Intra-Seasonal Dynamics of Rapidly Degrading Ice-Rich Permafrost Riverbanks in the Lena Delta with TerraSAR-X Time Series |
title_full_unstemmed |
Monitoring Inter- and Intra-Seasonal Dynamics of Rapidly Degrading Ice-Rich Permafrost Riverbanks in the Lena Delta with TerraSAR-X Time Series |
title_sort |
monitoring inter- and intra-seasonal dynamics of rapidly degrading ice-rich permafrost riverbanks in the lena delta with terrasar-x time series |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2017 |
url |
https://epic.awi.de/id/eprint/46300/ https://epic.awi.de/id/eprint/46300/1/Stettner_etal_2017_Remote_Sensing_10-00051.pdf http://www.mdpi.com/2072-4292/10/1/51 https://hdl.handle.net/10013/epic.d93537c6-cef2-481a-98bd-8862dfbcd6c0 https://hdl.handle.net/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice lena delta permafrost Tundra |
genre_facet |
Arctic Ice lena delta permafrost Tundra |
op_source |
EPIC3Remote Sensing, Multidisciplinary Digital Publishing Institute, 10(1), ISSN: 2072-4292 |
op_relation |
https://epic.awi.de/id/eprint/46300/1/Stettner_etal_2017_Remote_Sensing_10-00051.pdf https://hdl.handle.net/ Stettner, S. orcid:0000-0001-5278-7931 , Beamish, A. , Bartsch, A. , Heim, B. orcid:0000-0003-2614-9391 , Grosse, G. orcid:0000-0001-5895-2141 , Roth, A. and Lantuit, H. orcid:0000-0003-1497-6760 (2017) Monitoring Inter- and Intra-Seasonal Dynamics of Rapidly Degrading Ice-Rich Permafrost Riverbanks in the Lena Delta with TerraSAR-X Time Series , Remote Sensing, 10 (1) . doi:10.3390/rs10010051 <https://doi.org/10.3390/rs10010051> , hdl:10013/epic.d93537c6-cef2-481a-98bd-8862dfbcd6c0 |
op_doi |
https://doi.org/10.3390/rs10010051 |
container_title |
Remote Sensing |
container_volume |
10 |
container_issue |
2 |
container_start_page |
51 |
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1766345484146835456 |