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Array processing in cryoseismology: a comparison to network-based approaches at an Antarctic ice stream

Hudson, Thomas Samuel; Brisbourne, Alex M.; Kufner, Sofia-Katerina ORCID iD icon 1; Kendall, J.-Michael; Smith, Andy M.
1 Geophysikalisches Institut (GPI), Karlsruher Institut für Technologie (KIT)

Abstract:

Seismicity at glaciers, ice sheets, and ice shelves
provides observational constraint on a number of glaciologi-
cal processes. Detecting and locating this seismicity, specifi-
cally icequakes, is a necessary first step in studying processes
such as basal slip, crevassing, imaging ice fabric, and iceberg
calving, for example. Most glacier deployments to date use
conventional seismic networks, comprised of seismometers
distributed over the entire area of interest. However, smaller-
aperture seismic arrays can also be used, which are typically
sensitive to seismicity distal from the array footprint and re-
quire a smaller number of instruments. Here, we investigate
the potential of arrays and array-processing methods to de-
tect and locate subsurface microseismicity at glaciers, bench-
marking performance against conventional seismic-network-
based methods for an example at an Antarctic ice stream.
We also provide an array-processing recipe for body-wave
cryoseismology applications. Results from an array and a
network deployed at Rutford Ice Stream, Antarctica, show
that arrays and networks both have strengths and weaknesses.
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Verlagsausgabe §
DOI: 10.5445/IR/1000165993
Veröffentlicht am 05.01.2024
Originalveröffentlichung
DOI: 10.5194/tc-17-4979-2023
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Geophysikalisches Institut (GPI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 1994-0416, 1994-0424
KITopen-ID: 1000165993
Erschienen in The Cryosphere
Verlag Copernicus Publications
Band 17
Heft 11
Seiten 4979 – 4993
Vorab online veröffentlicht am 27.11.2023
Nachgewiesen in Dimensions
Scopus
Web of Science
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