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Furumoto et al. 1990
Furumoto, M., Kunitomo, T., Inoue, H., Yamada, I., Yamaoka, K., Ikami, A. and Fukao, Y. (1990). Twin sources of high-frequency volcanic tremor of Izu-Oshima Volcano, Japan. Geophysical Research Letters 17: doi: 10.1029/89GL03678. issn: 0094-8276.

The 1986 fissure eruption of Izu-Oshima volcano was preceded and followed by strong volcanic tremor activities. The post-eruption tremor activities consists of an alternating sequence of a tremor episode lasting about 10 min and the subsequent quiescence of about 40--50 min. We observed this post-eruption activity by a 24-channel seismic array developed on the caldera floor. The semblance analysis of the recorded data revealed that high frequency (<5 Hz) components of the tremor were radiated from two separated sources beneath the caldera. The tremor first occurred at one source and then migrated to the other source in a transition time of about a few minutes during each tremor episode. This transition suggests that the two sources are dynamically linked with each other in a magma-filled crack or conduit. ¿ American Geophysical Union 1990

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Abstract

Keywords
Seismology, Seismicity and seismotectonics, Volcanology, Eruption monitoring, Information Related to Geographic Region, Asia
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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