The 2004 earthquakes offshore of the Kii peninsula, Japan: Hypocentral relocation, source process and tectonic implication

Details The 2004 earthquakes offshore of the Kii peninsula, Japan: Hypocentral relocation, source process and tectonic implication The 2004 earthquakes offshore of the Kii peninsula, Japan: Hypocentral relocation, source process and tectonic implication

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pepi..165...47b&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 165, Issue 1-2, p. 47-55.

Physics

Scientific paper

On 5 September 2004, two major earthquakes of MW 7.2 and MW 7.3 (referred to as the foreshock and the mainshock hereafter) occurred close to the Nankai Trough in southwest Japan. This earthquake sequence is located within the subducting Philippine Sea plate (PHS) with an aftershock distribution that overlapped a portion of the source region of the 1944 Tonankai earthquake (MW 7.9). We relocate 53 events with magnitudes greater than 4.2 by combining a single-event location method for depth and a multiple-event location method for epicenter and origin time. Source mechanisms and rupture histories of the foreshock and the mainshock are investigated by using a waveform modeling method, which allows for mechanism changes during the rupture process. The MW 7.2 foreshock and the MW 7.3 mainshock are relocated in the uppermost mantle of the PHS on primary high-angle reverse faults. Focal mechanisms are consistent with the horizontal and vertical projects of the distribution of aftershocks. We speculate that this earthquake sequence was due to the collision reaction between the PHS and the Zenisu Ridge.

Affiliated with

Also associated with

No associations

Rating

The 2004 earthquakes offshore of the Kii peninsula, Japan: Hypocentral relocation, source process and tectonic implication does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The 2004 earthquakes offshore of the Kii peninsula, Japan: Hypocentral relocation, source process and tectonic implication, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The 2004 earthquakes offshore of the Kii peninsula, Japan: Hypocentral relocation, source process and tectonic implication will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1546342