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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Language: | English |
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Multidisciplinary Digital Publishing Institute (MDPI)
2018
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Online Access: | https://elib.dlr.de/117946/ https://elib.dlr.de/117946/1/remotesensing-10-00051.pdf http://www.mdpi.com/2072-4292/10/1/51/pdf |
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ftdlr:oai:elib.dlr.de:117946 2023-05-15T15:15:47+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 L. Bartsch, Annett Heim, Birgit Grosse, Guido Roth, Achim Lantuit, Hugues 2018 application/pdf https://elib.dlr.de/117946/ https://elib.dlr.de/117946/1/remotesensing-10-00051.pdf http://www.mdpi.com/2072-4292/10/1/51/pdf en eng Multidisciplinary Digital Publishing Institute (MDPI) https://elib.dlr.de/117946/1/remotesensing-10-00051.pdf Stettner, Samuel und Beamish, Alison L. und Bartsch, Annett und Heim, Birgit und Grosse, Guido und Roth, Achim und Lantuit, Hugues (2018) 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 (51), Seiten 1-20. Multidisciplinary Digital Publishing Institute (MDPI). DOI:10.3390/rs10010051 <https://doi.org/10.3390/rs10010051> ISSN 2072-4292 cc_by CC-BY Landoberfläche Zeitschriftenbeitrag PeerReviewed 2018 ftdlr https://doi.org/10.3390/rs10010051 2019-12-15T23:56:30Z 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. Other Non-Article Part of Journal/Newspaper Arctic Ice lena delta permafrost Tundra German Aerospace Center: elib - DLR electronic library Arctic Remote Sensing 10 2 51 |
institution |
Open Polar |
collection |
German Aerospace Center: elib - DLR electronic library |
op_collection_id |
ftdlr |
language |
English |
topic |
Landoberfläche |
spellingShingle |
Landoberfläche Stettner, Samuel Beamish, Alison L. 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 |
topic_facet |
Landoberfläche |
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 |
Other Non-Article Part of Journal/Newspaper |
author |
Stettner, Samuel Beamish, Alison L. Bartsch, Annett Heim, Birgit Grosse, Guido Roth, Achim Lantuit, Hugues |
author_facet |
Stettner, Samuel Beamish, Alison L. 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 (MDPI) |
publishDate |
2018 |
url |
https://elib.dlr.de/117946/ https://elib.dlr.de/117946/1/remotesensing-10-00051.pdf http://www.mdpi.com/2072-4292/10/1/51/pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice lena delta permafrost Tundra |
genre_facet |
Arctic Ice lena delta permafrost Tundra |
op_relation |
https://elib.dlr.de/117946/1/remotesensing-10-00051.pdf Stettner, Samuel und Beamish, Alison L. und Bartsch, Annett und Heim, Birgit und Grosse, Guido und Roth, Achim und Lantuit, Hugues (2018) 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 (51), Seiten 1-20. Multidisciplinary Digital Publishing Institute (MDPI). DOI:10.3390/rs10010051 <https://doi.org/10.3390/rs10010051> ISSN 2072-4292 |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/rs10010051 |
container_title |
Remote Sensing |
container_volume |
10 |
container_issue |
2 |
container_start_page |
51 |
_version_ |
1766346119785218048 |