A significant relation between seismic activities and reflection intensities in the Japan Trench region

Gou Fujie, Junzo Kasahara, Ryota Hino, Toshinori Sato, Masanao Shinohara, Kiyoshi Suyehiro

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

There is a regional variation of seismicity in the Japan trench region characterized by cluster distribution of seismically active zones which persist for at least a few decades. We conducted seismic refraction-reflection experiments there to clarify the relationship between seismicity and crustal structure. A velocity structure model was obtained by travel-time inversion. Although there does not seem to be distinct relationship between seismicity and the bulk velocity structure, we found a good relationship between seismicity and variation of reflective amplitude. Large amplitude reflected waves generated at the plate boundary were observed at low seismicity region and vice versa.

Original languageEnglish
Pages (from-to)4-1-4-4
JournalGeophysical Research Letters
Volume29
Issue number7
DOIs
Publication statusPublished - 2002 Apr 1

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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