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dc.contributor.author
Zhang, Zhen
dc.contributor.author
Walter, Fabian
dc.contributor.author
McArdell, Brian W.
dc.contributor.author
Wenner, Michaela
dc.contributor.author
Małgorzata, Chmiel
dc.contributor.author
de Haas, Tjalling
dc.contributor.author
He, Siming
dc.date.accessioned
2021-02-18T16:00:04Z
dc.date.available
2021-02-06T03:50:10Z
dc.date.available
2021-02-18T16:00:04Z
dc.date.issued
2021-01-16
dc.identifier.issn
0094-8276
dc.identifier.issn
1944-8007
dc.identifier.other
10.1029/2020GL088994
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/468150
dc.description.abstract
Debris flows induce seismic ground unrest detectable over large distances. However, recent theoretical description of debris‐flow seismograms has yet to be implemented in alarm systems. Here, we test the implications of a particle impact model for debris‐flow detection and warning using seismic data. We analyze 14 debris flows at Illgraben, Switzerland, using instantaneous weight measurements, a seismic network and video footage. A novel approach to simulate seismic wave propagation estimates both vertical and horizontal particle impact forces on the ground. Scaling between impact forces, weight, and particle sizes suggests that seismic data identify destructive debris flows with large boulders. Impact force spectra change with bed topography and increase during flow propagation of large events, but decrease for smaller events. This can be explained with the known conveyor mechanism concentrating boulders at the flow front. Our results highlight opportunities to use seismic data for debris‐flow research and warning. © 2020 American Geophysical Union
en_US
dc.language.iso
en
en_US
dc.publisher
American Geophysical Union
en_US
dc.title
Insights From the Particle Impact Model Into the High‐Frequency Seismic Signature of Debris Flows
en_US
dc.type
Other Journal Item
dc.date.published
2020-12-06
ethz.journal.title
Geophysical Research Letters
ethz.journal.volume
48
en_US
ethz.journal.issue
1
en_US
ethz.journal.abbreviated
Geophys. Res. Lett.
ethz.pages.start
e2020GL088994
en_US
ethz.size
11 p.
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Washington, DC
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::09558 - Walter, Fabian (ehemalig) / Walter, F. ((former))
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 (ehemalig) / Walter, F. ((former))
ethz.date.deposited
2021-02-06T03:50:15Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-02-18T16:00:16Z
ethz.rosetta.lastUpdated
2022-03-29T05:17:42Z
ethz.rosetta.versionExported
true
ethz.COinS
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