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dc.contributor.author
Sergeant, Amandine
dc.contributor.author
Mangeney, Anne
dc.contributor.author
Yastrebov, Vladislav A.
dc.contributor.author
Walter, Fabian
dc.contributor.author
Montagner, Jean-Paul
dc.contributor.author
Castelnau, Olivier
dc.contributor.author
Stutzmann, Eleonore
dc.contributor.author
Bonnet, Pauline
dc.contributor.author
Ralaiarisoa, Velotioana Jean-Luc
dc.contributor.author
Bevan, Suzanne
dc.contributor.author
Luckman, Adrian
dc.date.accessioned
2019-08-15T10:50:00Z
dc.date.available
2019-04-30T09:17:23Z
dc.date.available
2019-05-02T08:10:34Z
dc.date.available
2019-06-20T10:55:45Z
dc.date.available
2019-08-15T10:50:00Z
dc.date.issued
2019-09
dc.identifier.issn
0260-3055
dc.identifier.other
10.1017/aog.2019.7
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/340143
dc.identifier.doi
10.3929/ethz-b-000340143
dc.description.abstract
Since the 2000s, Greenland ice sheet mass loss has been accelerating, followed by increasing numbers of glacial earthquakes (GEs) at near-grounded glaciers. GEs are caused by calving of km-scale icebergs which capsize against the terminus. Seismic record inversion allows a reconstruction of the history of GE sources which captures capsize dynamics through iceberg-to-terminus contact. When compared with a catalog of contact forces from an iceberg capsize model, seismic force history accurately computes calving volumes while the earthquake magnitude fails to uniquely characterize iceberg size, giving errors up to 1 km3. Calving determined from GEs recorded ateight glaciers in 1993–2013 accounts for up to 21% of the associated discharge and 6% of the Greenland mass loss. The proportion of discharge attributed to capsizing calving may be underestimated by at least 10% as numerous events could not be identified by standard seismic detections (Olsen and Nettles, 2018). While calving production tends to stabilize in East Greenland, Western glaciers have released more and larger icebergs since 2010 and have become major contributors to Greenland dynamic discharge. Production of GEs and calving behavior are controlled by glacier geometry with bigger icebergs being produced when the terminus advances in deepening water. We illustrate how GEs can help in partitioning and monitoring Greenland mass loss and characterizing capsize dynamics.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Cambridge University Press
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Climate change
en_US
dc.subject
Glacier calving
en_US
dc.subject
Glacier discharge
en_US
dc.subject
Iceberg calving
en_US
dc.subject
Seismology
en_US
dc.title
Monitoring Greenland ice sheet buoyancy-driven calving discharge using glacial earthquakes
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2019-04-10
ethz.journal.title
Annals of Glaciology
ethz.journal.volume
60
en_US
ethz.journal.issue
79
en_US
ethz.pages.start
75
en_US
ethz.pages.end
95
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.grant
Glacial Hazard Monitoring with Seismology (GlaHMSeis)
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Cambridge
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::08726 - Funk, Martin (Tit.-Prof.)
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::09558 - Walter, Fabian (SNF-Professur) / Walter, Fabian (SNF-Professur)
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::08726 - Funk, Martin (Tit.-Prof.)
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::09558 - Walter, Fabian (SNF-Professur) / Walter, Fabian (SNF-Professur)
ethz.grant.agreementno
157551
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
ethz.date.deposited
2019-04-30T09:17:24Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-08-15T10:50:10Z
ethz.rosetta.lastUpdated
2019-08-15T10:50:10Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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