Physics
Scientific paper
Nov 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ep%26s...54.1027n&link_type=abstract
Earth, Planets and Space, Volume 54, p. 1027-1031.
Physics
2
Scientific paper
An extensive seismic experiment was carried out in June 2001 around the Nagamachi-Rifu fault, northeastern Japan. We deployed seismic arrays on the hanging wall of the reverse fault, and observed seismic waves caused by chemical explosions and vibrators. Several later arrivals from reflectors, whose depths are about 9 to 21 km, are detected in the observed shot gathers. Some of them probably correspond to S-wave reflectors and scatterers previously estimated from the data of natural earthquakes. A clear reflector was found in and below the seismogenic layer at 4 to 4.5-s two-way traveltime (TWTT). It is located at the shallower and deeper extensions of the fault plane of M5.0 earthquake that occurred in 1998. Its extension to the surface seems to connect with the surface trace of the Nagamachi-Rifu fault. These suggest that the Nagamachi-Rifu fault has a low dip-angle in the mid-crust as a detachment fault, if the reflector shows the fault structures.
Asano Yasuhiro
Hasegawa Akira
Nakamura Akihiro
No associations
LandOfFree
Estimation of deep fault geometry of the Nagamachi-Rifu fault from seismic array 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 Estimation of deep fault geometry of the Nagamachi-Rifu fault from seismic array observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Estimation of deep fault geometry of the Nagamachi-Rifu fault from seismic array observations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-737514