Physics
Scientific paper
Mar 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974pepi....8..148s&link_type=abstract
Physics of the Earth and Planetary Interiors, Volume 8, Issue 2, p. 148-157.
Physics
11
Scientific paper
Eastern Hokkaido is being considered as one of the prime candidates for a future great earthquake in Japan. Geodetic work and seismological data suggest that the continental plate is being compressed and dragged down into the asthenosphere by the underthrusting Pacific plate. A quantitative examination of this idea was carried out by an application of the finite-element method to a static-field problem of crustal deformation. The effect of heterogeneous medium with Poisson's ratio differing from 0.25 is significant. An inverse problem was solved by applying a quadratic programming method to the observed vertical displacement. A model, which assumes a nearly uniform tangential displacement along the interface of the oceanic and continental lithospheres down to a depth of 100 km, explains a gravity-change as well as the general features of crustal deformation observed in eastern Hokkaido. The displacement rate is estimated to be 2.7 cm/year. It indicates that a rebound of the continental lithosphere now brings about a thrust-type earthquake whose reverse slip is comparable to that estimated for great shallow earthquakes along the Kuril trench. A possibility of aseismic rebound is suggested at the lower part of the interface.
No associations
LandOfFree
Pre-seismic crustal deformation caused by an underthrusting oceanic plate, in eastern Hokkaido, Japan 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 Pre-seismic crustal deformation caused by an underthrusting oceanic plate, in eastern Hokkaido, Japan, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pre-seismic crustal deformation caused by an underthrusting oceanic plate, in eastern Hokkaido, Japan will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1799410