Long-period (12 sec) volcanic tremor observed at Usu 2000 eruption: Seismological detection of a deep magma plumbing system

Mare Yamamoto, Hitoshi Kawakatsu, Kiyoshi Yomogida, Junji Koyama

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

From a temporal deployment of a broadband seismic network at Usu volcano, Japan, we observed long-period (12 sec) volcanic tremors during the first few weeks of the eruptive activity which started in the end of March, 2000. The source of these long period tremors are located relatively deep at a depth of 5 km, and their amplitude variation well correlates with the uplift rate of the eruption area. We thus attribute these long period tremors to the flow induced vibration of a magma chamber and its outlet located around the source region of the long period tremors. This may be the first seismological detection of long-period (>10 sec) vibrations of a deep magma plumbing system.

Original languageEnglish
Pages (from-to)43-1-43-4
JournalGeophysical Research Letters
Volume29
Issue number9
DOIs
Publication statusPublished - 2002 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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