Mapping the sources of the seismic wave field at Kilauea volcano, Hawaii, using data recorded on multiple seismic Antennas

J. Almendros; B. Chouet; P. Dawson; Caleb G. Huber

doi:10.1785/0120020037

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Mapping the sources of the seismic wave field at Kilauea volcano, Hawaii, using data recorded on multiple seismic Antennas

J. Almendros·B. Chouet·P. Dawson·Caleb G. Huber

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Abstract

Seismic antennas constitute a powerful tool for the analysis of complex wave fields. Well-designed antennas can identify and separate components of a complex wave field based on their distinct propagation properties. The combination of several antennas provides the basis for a more complete understanding of volcanic wave fields, including an estimate of the location of each individual wave-field component identified simultaneously by at least two antennas. We used frequency-slowness analyses of data from three antennas to identify and locate the different components contributing to the wave fields recorded at Kilauea volcano, Hawaii, in February 1997. The wave-field components identified are (1) a sustained background volcanic tremor in the form of body waves generated in a shallow hydrothermal system located below the northeastern edge of the Halemaumau pit crater; (2) surface waves generated along the path between this hydrothermal source and the antennas; (3) back-scattered surface wave energy from a shallow reflector located near the southeastern rim of Kilauea caldera; (4) evidence for diffracted wave components originating at the southeastern edge of Halemaumau; and (5) body waves reflecting the activation of a deeper tremor source between 02 hr 00 min and 16 hr 00 min Hawaii Standard Time on 11 February.

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Bulletin of the Seismological Society of America Article

Source-reported bounding extent: 19.392772523819033° to 19.441665644565774° latitude; -155.29415130615234° to -155.23372650146484° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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J. Almendros, B. Chouet, P. Dawson, Caleb G. Huber. 2002. Mapping the sources of the seismic wave field at Kilauea volcano, Hawaii, using data recorded on multiple seismic Antennas. https://doi.org/10.1785/0120020037

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