Source process for complex fault system of the 2007 Chuetsu-oki, Niigata, Japan, earthquake

Details Source process for complex fault system of the 2007 Chuetsu-oki, Niigata, Japan, earthquake Source process for complex fault system of the 2007 Chuetsu-oki, Niigata, Japan, earthquake

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ep%26s...61..273n&link_type=abstract

Earth, Planets and Space, Volume 61, p. 273-278.

Computer Science

Scientific paper

The 2007 Chuetsu-oki earthquake occurred in the offshore area of Niigata Prefecture, central Japan, on 16 July 2007. The aftershock distribution shows two fault planes, dipping to the northwest and southeast, respectively, which form a cross-sectional "V" pattern. We analyze the kinematic source process for the two fault planes consistent with the aftershock distribution using teleseismic body waveform data. Our results indicate that the mainshock initiated rupture on both faults northeast of their intersection and that the rupture propagated unilaterally southwestward along the southeast-dipping fault. The maximum slip is 1.6 m on the southeast-dipping fault, and the seismic moments of northwest- and southeast-dipping faults are 8.0 × 1017 N m (Mw 5.9) and 7.5 × 1018 N m (Mw 6.5), respectively. The forward modeling of geodetic displacement from the obtained fault model is consistent with the GPS and InSAR measurements. Successive conjugate reverse faults around the source region are identified from the reflection seismic sections. We presume that stress changes and complicated structures in property and geometry around the source region are the dominant causal factors for generating the complexity of coseismic fault system.

Affiliated with

Also associated with

No associations

Rating

Source process for complex fault system of the 2007 Chuetsu-oki, Niigata, Japan, earthquake 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 Source process for complex fault system of the 2007 Chuetsu-oki, Niigata, Japan, earthquake, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Source process for complex fault system of the 2007 Chuetsu-oki, Niigata, Japan, earthquake will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-915665