A significant relation between seismic activities and reflection intensities in the Japan Trench region
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 s...
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Veröffentlicht in: | Geophysical research letters 2002-04, Vol.29 (7), p.4-1-4-4 |
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Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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. |
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ISSN: | 0094-8276 1944-8007 |
DOI: | 10.1029/2001GL013764 |