Regional passive seismic monitoring reveals dynamic glacier activity on Spitsbergen, Svalbard
Dynamic glacier activity is increasingly observed through passive seismic monitoring. We analysed near-regional-scale seismicity on the Arctic archipelago of Svalbard to identify seismic icequake signals and to study their spatial–temporal distribution within the 14-year period from 2000 until 2013....
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Norwegian Polar Institute
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ftjpolarres:oai:journals.openacademia.net:article/3214 2024-09-09T19:16:59+00:00 Regional passive seismic monitoring reveals dynamic glacier activity on Spitsbergen, Svalbard Köhler, Andreas Nuth, Christopher Schweitzer, Johannes Weidle, Christian Gibbons, Steven J. 2015-12-04 application/pdf text/html application/epub+zip application/xml https://polarresearch.net/index.php/polar/article/view/3214 https://doi.org/10.3402/polar.v34.26178 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/3214/pdf_59 https://polarresearch.net/index.php/polar/article/view/3214/html_47 https://polarresearch.net/index.php/polar/article/view/3214/_49 https://polarresearch.net/index.php/polar/article/view/3214/xml_46 https://polarresearch.net/index.php/polar/article/view/3214 doi:10.3402/polar.v34.26178 Polar Research; Vol 34 (2015) 1751-8369 Iceberg calving glacier surge icequake cryo-seismology Svalbard info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftjpolarres https://doi.org/10.3402/polar.v34.26178 2024-06-20T23:33:17Z Dynamic glacier activity is increasingly observed through passive seismic monitoring. We analysed near-regional-scale seismicity on the Arctic archipelago of Svalbard to identify seismic icequake signals and to study their spatial–temporal distribution within the 14-year period from 2000 until 2013. This is the first study that uses seismic data recorded on permanent broadband stations to detect and locate icequakes in different regions of Spitsbergen, the main island of the archipelago. A temporary local seismic network and direct observations of glacier calving and surging were used to identify icequake sources. We observed a high number of icequakes with clear spectral peaks between 1 and 8 Hz in different parts of Spitsbergen. Spatial clusters of icequakes could be associated with individual grounded tidewater glaciers and exhibited clear seasonal variability each year with more signals observed during the melt season. Locations at the termini of glaciers, and correlation with visual calving observations in situ at Kronebreen, a glacier in the Kongsfjorden region, show that these icequakes were caused dominantly by calving. Indirect evidence for glacier surging through increased calving seismicity was found in 2003 at Tunabreen, a glacier in central Spitsbergen. Another type of icequake was observed in the area of the Nathorstbreen glacier system. Seismic events occurred upstream of the glacier within a short time period between January and May 2009 during the initial phase of a major glacier surge. This study is the first step towards the generation and implementation of an operational seismic monitoring strategy for glacier dynamics in Svalbard.Keywords: Iceberg calving; glacier surge; icequake; cryo-seismology; Svalbard.(Published: 4 December 2015)Citation: Polar Research 2015, 34, 26178, http://dx.doi.org/10.3402/polar.v34.26178 Article in Journal/Newspaper Arctic Archipelago Arctic glacier Iceberg* Kongsfjord* Kongsfjorden Polar Research Svalbard Tidewater Spitsbergen Polar Research Arctic Svalbard Main Island ENVELOPE(-38.220,-38.220,-54.007,-54.007) Kronebreen ENVELOPE(13.333,13.333,78.833,78.833) Tunabreen ENVELOPE(17.387,17.387,78.461,78.461) Nathorstbreen ENVELOPE(16.215,16.215,77.437,77.437) Polar Research 34 1 26178 |
institution |
Open Polar |
collection |
Polar Research |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Iceberg calving glacier surge icequake cryo-seismology Svalbard |
spellingShingle |
Iceberg calving glacier surge icequake cryo-seismology Svalbard Köhler, Andreas Nuth, Christopher Schweitzer, Johannes Weidle, Christian Gibbons, Steven J. Regional passive seismic monitoring reveals dynamic glacier activity on Spitsbergen, Svalbard |
topic_facet |
Iceberg calving glacier surge icequake cryo-seismology Svalbard |
description |
Dynamic glacier activity is increasingly observed through passive seismic monitoring. We analysed near-regional-scale seismicity on the Arctic archipelago of Svalbard to identify seismic icequake signals and to study their spatial–temporal distribution within the 14-year period from 2000 until 2013. This is the first study that uses seismic data recorded on permanent broadband stations to detect and locate icequakes in different regions of Spitsbergen, the main island of the archipelago. A temporary local seismic network and direct observations of glacier calving and surging were used to identify icequake sources. We observed a high number of icequakes with clear spectral peaks between 1 and 8 Hz in different parts of Spitsbergen. Spatial clusters of icequakes could be associated with individual grounded tidewater glaciers and exhibited clear seasonal variability each year with more signals observed during the melt season. Locations at the termini of glaciers, and correlation with visual calving observations in situ at Kronebreen, a glacier in the Kongsfjorden region, show that these icequakes were caused dominantly by calving. Indirect evidence for glacier surging through increased calving seismicity was found in 2003 at Tunabreen, a glacier in central Spitsbergen. Another type of icequake was observed in the area of the Nathorstbreen glacier system. Seismic events occurred upstream of the glacier within a short time period between January and May 2009 during the initial phase of a major glacier surge. This study is the first step towards the generation and implementation of an operational seismic monitoring strategy for glacier dynamics in Svalbard.Keywords: Iceberg calving; glacier surge; icequake; cryo-seismology; Svalbard.(Published: 4 December 2015)Citation: Polar Research 2015, 34, 26178, http://dx.doi.org/10.3402/polar.v34.26178 |
format |
Article in Journal/Newspaper |
author |
Köhler, Andreas Nuth, Christopher Schweitzer, Johannes Weidle, Christian Gibbons, Steven J. |
author_facet |
Köhler, Andreas Nuth, Christopher Schweitzer, Johannes Weidle, Christian Gibbons, Steven J. |
author_sort |
Köhler, Andreas |
title |
Regional passive seismic monitoring reveals dynamic glacier activity on Spitsbergen, Svalbard |
title_short |
Regional passive seismic monitoring reveals dynamic glacier activity on Spitsbergen, Svalbard |
title_full |
Regional passive seismic monitoring reveals dynamic glacier activity on Spitsbergen, Svalbard |
title_fullStr |
Regional passive seismic monitoring reveals dynamic glacier activity on Spitsbergen, Svalbard |
title_full_unstemmed |
Regional passive seismic monitoring reveals dynamic glacier activity on Spitsbergen, Svalbard |
title_sort |
regional passive seismic monitoring reveals dynamic glacier activity on spitsbergen, svalbard |
publisher |
Norwegian Polar Institute |
publishDate |
2015 |
url |
https://polarresearch.net/index.php/polar/article/view/3214 https://doi.org/10.3402/polar.v34.26178 |
long_lat |
ENVELOPE(-38.220,-38.220,-54.007,-54.007) ENVELOPE(13.333,13.333,78.833,78.833) ENVELOPE(17.387,17.387,78.461,78.461) ENVELOPE(16.215,16.215,77.437,77.437) |
geographic |
Arctic Svalbard Main Island Kronebreen Tunabreen Nathorstbreen |
geographic_facet |
Arctic Svalbard Main Island Kronebreen Tunabreen Nathorstbreen |
genre |
Arctic Archipelago Arctic glacier Iceberg* Kongsfjord* Kongsfjorden Polar Research Svalbard Tidewater Spitsbergen |
genre_facet |
Arctic Archipelago Arctic glacier Iceberg* Kongsfjord* Kongsfjorden Polar Research Svalbard Tidewater Spitsbergen |
op_source |
Polar Research; Vol 34 (2015) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/3214/pdf_59 https://polarresearch.net/index.php/polar/article/view/3214/html_47 https://polarresearch.net/index.php/polar/article/view/3214/_49 https://polarresearch.net/index.php/polar/article/view/3214/xml_46 https://polarresearch.net/index.php/polar/article/view/3214 doi:10.3402/polar.v34.26178 |
op_doi |
https://doi.org/10.3402/polar.v34.26178 |
container_title |
Polar Research |
container_volume |
34 |
container_issue |
1 |
container_start_page |
26178 |
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1809757105936138240 |