Source mechanics for monochromatic icequakes produced during iceberg calving at Columbia Glacier, AK

Geophysical Research Letters
By:  and 

Links

Abstract

Seismograms recorded during iceberg calving contain information pertaining to source processes during calving events. However, locally variable material properties may cause signal distortions, known as site and path effects, which must be eliminated prior to commenting on source mechanics. We applied the technique of horizontal/vertical spectral ratios to passive seismic data collected at Columbia Glacier, AK, and found no dominant site or path effects. Rather, monochromatic waveforms generated by calving appear to result from source processes. We hypothesize that a fluid-filled crack source model offers a potential mechanism for observed seismograms produced by calving, and fracture-processes preceding calving.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Source mechanics for monochromatic icequakes produced during iceberg calving at Columbia Glacier, AK
Series title Geophysical Research Letters
DOI 10.1029/2007GL031370
Volume 34
Issue 22
Year Published 2007
Language English
Publisher American Geophysical Union (AGU)
Publisher location Washington, D.C.
Contributing office(s) Alaska Science Center
Description Unpaginated
Online Only (Y/N) Y
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional metadata about this publication, not found in other parts of the page is in this table