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...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2021
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-15-4901-2021 https://noa.gwlb.de/receive/cop_mods_00058485 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058121/tc-15-4901-2021.pdf https://tc.copernicus.org/articles/15/4901/2021/tc-15-4901-2021.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00058485 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00058485 2023-05-15T18:32:32+02:00 Brief communication: Detection of glacier surge activity using cloud computing of Sentinel-1 radar data Leclercq, Paul Willem Kääb, Andreas Altena, Bas 2021-10 electronic https://doi.org/10.5194/tc-15-4901-2021 https://noa.gwlb.de/receive/cop_mods_00058485 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058121/tc-15-4901-2021.pdf https://tc.copernicus.org/articles/15/4901/2021/tc-15-4901-2021.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-15-4901-2021 https://noa.gwlb.de/receive/cop_mods_00058485 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058121/tc-15-4901-2021.pdf https://tc.copernicus.org/articles/15/4901/2021/tc-15-4901-2021.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2021 ftnonlinearchiv https://doi.org/10.5194/tc-15-4901-2021 2022-02-08T22:33:03Z 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 Niedersächsisches Online-Archiv NOA The Cryosphere 15 10 4901 4907 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Leclercq, Paul Willem Kääb, Andreas Altena, Bas Brief communication: Detection of glacier surge activity using cloud computing of Sentinel-1 radar data |
topic_facet |
article Verlagsveröffentlichung |
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 |
Leclercq, Paul Willem Kääb, Andreas Altena, Bas |
author_facet |
Leclercq, Paul Willem Kääb, Andreas Altena, Bas |
author_sort |
Leclercq, Paul Willem |
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://noa.gwlb.de/receive/cop_mods_00058485 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058121/tc-15-4901-2021.pdf https://tc.copernicus.org/articles/15/4901/2021/tc-15-4901-2021.pdf |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-15-4901-2021 https://noa.gwlb.de/receive/cop_mods_00058485 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00058121/tc-15-4901-2021.pdf https://tc.copernicus.org/articles/15/4901/2021/tc-15-4901-2021.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
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 |
_version_ |
1766216676896931840 |