Articles | Volume 11, issue 1
The Cryosphere, 11, 609–618, 2017
https://doi.org/10.5194/tc-11-609-2017
The Cryosphere, 11, 609–618, 2017
https://doi.org/10.5194/tc-11-609-2017
Research article
22 Feb 2017
Research article | 22 Feb 2017

Calving localization at Helheim Glacier using multiple local seismic stations

M. Jeffrey Mei et al.

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Cited articles

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Amundson, J. M., Truffer, M., Lüthi, M. P., Fahnestock, M., West, M., and Motyka, R. J.: Glacier, fjord, and seismic response to recent large calving events, Jakobshavn Isbræ, Greenland, Geophys. Res. Lett., 35, l22501, https://doi.org/10.1029/2008GL035281, 2008.
Amundson, J. M., Fahnestock, M., Truffer, M., Brown, J., Lüthi, M. P., and Motyka, R. J.: Ice mélange dynamics and implications for terminus stability, Jakobshavn Isbræ, Greenland, J. Geophys. Res.-Earth, 115, 1405, https://doi.org/10.1029/2009JF001405, 2010.
Amundson, J. M., Clinton, J. F., Fahnestock, M., Truffer, M., Lüthi, M. P., and Motyka, R. J.: Observing calving-generated ocean waves with coastal broadband seismometers, Jakobshavn Isbræ, Greenland, Ann. Glaciol., 53, 79–84, https://doi.org/10.3189/2012/AoG60A200, , 2012.
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Short summary
We determine a method to locate calving at Helheim Glacier. By using local seismometers, we are able to find the calving location at a much higher precision than previous studies. The signal–onset time differences at four local seismic stations are used to determine possible seismic-wave origins. We present a catalogue of 12 calving events from 2014 to 2015, which shows that calving preferentially happens at the northern end of Helheim Glacier, which will help to constrain models of calving.