Brief communication: Detection of glacier surge activity using cloud computing of Sentinel-1 radar data
For studying the flow of glaciers and their response to climate change it is important to detect glacier surges. Here, we compute within Google Earth Engine the normalized differences between winter maxima of Sentinel-1 C-band radar backscatter image stacks over subsequent years. We arrive at a glob...
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Copernicus Publications
2021
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Online Access: | https://doi.org/10.5194/tc-15-4901-2021 https://tc.copernicus.org/articles/15/4901/2021/tc-15-4901-2021.pdf https://doaj.org/article/c3117ad6eb8b4ce4ba73aed7aec27ac5 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:c3117ad6eb8b4ce4ba73aed7aec27ac5 2023-05-15T18:32:20+02:00 Brief communication: Detection of glacier surge activity using cloud computing of Sentinel-1 radar data P. W. Leclercq A. Kääb B. Altena 2021-10-01 https://doi.org/10.5194/tc-15-4901-2021 https://tc.copernicus.org/articles/15/4901/2021/tc-15-4901-2021.pdf https://doaj.org/article/c3117ad6eb8b4ce4ba73aed7aec27ac5 en eng Copernicus Publications doi:10.5194/tc-15-4901-2021 1994-0416 1994-0424 https://tc.copernicus.org/articles/15/4901/2021/tc-15-4901-2021.pdf https://doaj.org/article/c3117ad6eb8b4ce4ba73aed7aec27ac5 undefined The Cryosphere, Vol 15, Pp 4901-4907 (2021) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.5194/tc-15-4901-2021 2023-01-22T17:53:14Z For studying the flow of glaciers and their response to climate change it is important to detect glacier surges. Here, we compute within Google Earth Engine the normalized differences between winter maxima of Sentinel-1 C-band radar backscatter image stacks over subsequent years. We arrive at a global map of annual backscatter changes, which are for glaciers in most cases related to changed crevassing associated with surge-type activity. For our demonstration period 2018–2019 we detected 69 surging glaciers, with many of them not classified so far as surge type. Comparison with glacier surface velocities shows that we reliably find known surge activities. Our method can support operational monitoring of glacier surges and some other special events such as large rock and snow avalanches. Article in Journal/Newspaper The Cryosphere Unknown The Cryosphere 15 10 4901 4907 |
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geo envir P. W. Leclercq A. Kääb B. Altena Brief communication: Detection of glacier surge activity using cloud computing of Sentinel-1 radar data |
topic_facet |
geo envir |
description |
For studying the flow of glaciers and their response to climate change it is important to detect glacier surges. Here, we compute within Google Earth Engine the normalized differences between winter maxima of Sentinel-1 C-band radar backscatter image stacks over subsequent years. We arrive at a global map of annual backscatter changes, which are for glaciers in most cases related to changed crevassing associated with surge-type activity. For our demonstration period 2018–2019 we detected 69 surging glaciers, with many of them not classified so far as surge type. Comparison with glacier surface velocities shows that we reliably find known surge activities. Our method can support operational monitoring of glacier surges and some other special events such as large rock and snow avalanches. |
format |
Article in Journal/Newspaper |
author |
P. W. Leclercq A. Kääb B. Altena |
author_facet |
P. W. Leclercq A. Kääb B. Altena |
author_sort |
P. W. Leclercq |
title |
Brief communication: Detection of glacier surge activity using cloud computing of Sentinel-1 radar data |
title_short |
Brief communication: Detection of glacier surge activity using cloud computing of Sentinel-1 radar data |
title_full |
Brief communication: Detection of glacier surge activity using cloud computing of Sentinel-1 radar data |
title_fullStr |
Brief communication: Detection of glacier surge activity using cloud computing of Sentinel-1 radar data |
title_full_unstemmed |
Brief communication: Detection of glacier surge activity using cloud computing of Sentinel-1 radar data |
title_sort |
brief communication: detection of glacier surge activity using cloud computing of sentinel-1 radar data |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-4901-2021 https://tc.copernicus.org/articles/15/4901/2021/tc-15-4901-2021.pdf https://doaj.org/article/c3117ad6eb8b4ce4ba73aed7aec27ac5 |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_source |
The Cryosphere, Vol 15, Pp 4901-4907 (2021) |
op_relation |
doi:10.5194/tc-15-4901-2021 1994-0416 1994-0424 https://tc.copernicus.org/articles/15/4901/2021/tc-15-4901-2021.pdf https://doaj.org/article/c3117ad6eb8b4ce4ba73aed7aec27ac5 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-15-4901-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
10 |
container_start_page |
4901 |
op_container_end_page |
4907 |
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1766216431914975232 |