Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica
The deployment of a seismic network along the Adelie and George V coasts in East Antarctica during the period 2009-2012 provides the opportunity to monitor cryoseismic activity and to obtain new insights on the relationship between tidal cycles and coastal glacier dynamics. Here we focus on records...
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ftarchimer:oai:archimer.ifremer.fr:35567 2023-05-15T13:50:50+02:00 Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica Barruol, Guilhem Cordier, Emmanuel Bascou, Jerome Fontaine, Fabrice R. Legresy, Benoit Lescarmontier, Lydie 2013-10 application/pdf https://archimer.ifremer.fr/doc/00244/35567/34098.pdf https://doi.org/10.1002/2013GL057814 https://archimer.ifremer.fr/doc/00244/35567/ eng eng Amer Geophysical Union https://archimer.ifremer.fr/doc/00244/35567/34098.pdf doi:10.1002/2013GL057814 https://archimer.ifremer.fr/doc/00244/35567/ 2013. American Geophysical Union. All Rights Reserved. info:eu-repo/semantics/openAccess restricted use Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2013-10 , Vol. 40 , N. 20 , P. 5412-5416 icequakes Mertz glacier tide Antarctica cryoseismology Adélie land text Publication info:eu-repo/semantics/article 2013 ftarchimer https://doi.org/10.1002/2013GL057814 2021-09-23T20:25:36Z The deployment of a seismic network along the Adelie and George V coasts in East Antarctica during the period 2009-2012 provides the opportunity to monitor cryoseismic activity and to obtain new insights on the relationship between tidal cycles and coastal glacier dynamics. Here we focus on records from a seismometer located on a rocky outcrop in the vicinity of the grounding line of the 35 km broad Mertz glacier, a major outflow of this region. We detect numerous icequakes (50,000 events within 10 months and up to 100 events/h) and demonstrate their clear tidal modulation. We suggest that they result from ice friction and fracturing around the rocky peak and from the glacier flexure in response to the falling and rising tides at its grounding area. We propose that such icequake monitoring could be used as a climate proxy since grounding lines are subject to migrate with sea level changes. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Mertz Glacier Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) East Antarctica Mertz Glacier ENVELOPE(144.500,144.500,-67.667,-67.667) Rocky Peak ENVELOPE(-126.203,-126.203,57.733,57.733) Geophysical Research Letters 40 20 5412 5416 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
icequakes Mertz glacier tide Antarctica cryoseismology Adélie land |
spellingShingle |
icequakes Mertz glacier tide Antarctica cryoseismology Adélie land Barruol, Guilhem Cordier, Emmanuel Bascou, Jerome Fontaine, Fabrice R. Legresy, Benoit Lescarmontier, Lydie Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica |
topic_facet |
icequakes Mertz glacier tide Antarctica cryoseismology Adélie land |
description |
The deployment of a seismic network along the Adelie and George V coasts in East Antarctica during the period 2009-2012 provides the opportunity to monitor cryoseismic activity and to obtain new insights on the relationship between tidal cycles and coastal glacier dynamics. Here we focus on records from a seismometer located on a rocky outcrop in the vicinity of the grounding line of the 35 km broad Mertz glacier, a major outflow of this region. We detect numerous icequakes (50,000 events within 10 months and up to 100 events/h) and demonstrate their clear tidal modulation. We suggest that they result from ice friction and fracturing around the rocky peak and from the glacier flexure in response to the falling and rising tides at its grounding area. We propose that such icequake monitoring could be used as a climate proxy since grounding lines are subject to migrate with sea level changes. |
format |
Article in Journal/Newspaper |
author |
Barruol, Guilhem Cordier, Emmanuel Bascou, Jerome Fontaine, Fabrice R. Legresy, Benoit Lescarmontier, Lydie |
author_facet |
Barruol, Guilhem Cordier, Emmanuel Bascou, Jerome Fontaine, Fabrice R. Legresy, Benoit Lescarmontier, Lydie |
author_sort |
Barruol, Guilhem |
title |
Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica |
title_short |
Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica |
title_full |
Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica |
title_fullStr |
Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica |
title_full_unstemmed |
Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica |
title_sort |
tide-induced microseismicity in the mertz glacier grounding area, east antarctica |
publisher |
Amer Geophysical Union |
publishDate |
2013 |
url |
https://archimer.ifremer.fr/doc/00244/35567/34098.pdf https://doi.org/10.1002/2013GL057814 https://archimer.ifremer.fr/doc/00244/35567/ |
long_lat |
ENVELOPE(144.500,144.500,-67.667,-67.667) ENVELOPE(-126.203,-126.203,57.733,57.733) |
geographic |
East Antarctica Mertz Glacier Rocky Peak |
geographic_facet |
East Antarctica Mertz Glacier Rocky Peak |
genre |
Antarc* Antarctica East Antarctica Mertz Glacier |
genre_facet |
Antarc* Antarctica East Antarctica Mertz Glacier |
op_source |
Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2013-10 , Vol. 40 , N. 20 , P. 5412-5416 |
op_relation |
https://archimer.ifremer.fr/doc/00244/35567/34098.pdf doi:10.1002/2013GL057814 https://archimer.ifremer.fr/doc/00244/35567/ |
op_rights |
2013. American Geophysical Union. All Rights Reserved. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1002/2013GL057814 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
20 |
container_start_page |
5412 |
op_container_end_page |
5416 |
_version_ |
1766254134144532480 |