Seismic characteristics around the fault segment boundary of historical great earthquakes along the Nankai Trough revealed by repeated long-term OBS observations

Details Seismic characteristics around the fault segment boundary of historical great earthquakes along the Nankai Trough revealed by repeated long-term OBS observations Seismic characteristics around the fault segment boundary of historical great earthquakes along the Nankai Trough revealed by repeated long-term OBS observations

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3709304m&link_type=abstract

Geophysical Research Letters, Volume 37, Issue 9, CiteID L09304

Physics

1

Seismology: Seismicity And Tectonics (1207, 1217, 1240, 1242), Seismology: Subduction Zones (1207, 1219, 1240), Seismology: Tomography (6982, 8180)

Scientific paper

The existence of a static fault segment boundary has been proposed for segmentation of the historical great earthquakes along the Nankai Trough, southwest of Japan. Due to the extremely low seismicity, the seismic characteristics around the boundary have remained too uncertain to allow detailed discussion of the cause of the fault segmentation. We collected four years of continuous seismic data around the segment boundary through repeated marine observations and determined accurate hypocenters, magnitudes and focal mechanisms of the observed earthquakes. The Tokai segment to the east of the boundary shows particularly low seismicity. An abrupt change in the P-axis orientation of intra-slab earthquakes coincides with heterogeneous structure within the subducting Philippine Sea Plate. The boundaries between regions of different seismic character are parallel to the magnetic anomaly lineation over the Shikoku Basin of the subducting plate, implying that they are determined by the formation process of the basin.

Affiliated with

Also associated with

No associations

Rating

Seismic characteristics around the fault segment boundary of historical great earthquakes along the Nankai Trough revealed by repeated long-term OBS observations 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 Seismic characteristics around the fault segment boundary of historical great earthquakes along the Nankai Trough revealed by repeated long-term OBS observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seismic characteristics around the fault segment boundary of historical great earthquakes along the Nankai Trough revealed by repeated long-term OBS observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-790919