Triggering and inhibition of great Japanese earthquakes: the effect of Nobi 1891 on Tonankai 1944, Nankaido 1946 and Tokai

Details Triggering and inhibition of great Japanese earthquakes: the effect of Nobi 1891 on Tonankai 1944, Nankaido 1946 and Tokai Triggering and inhibition of great Japanese earthquakes: the effect of Nobi 1891 on Tonankai 1944, Nankaido 1946 and Tokai

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003e%26psl.206..289r&link_type=abstract

Earth and Planetary Science Letters, Volume 206, Issue 3-4, p. 289-296.

Computer Science

5

Postseismic Relaxation, Stress Diffusion, Fault Process Modeling, Tokai Earthquake, Nobi Earthquake

Scientific paper

There are two unusual features of the most recent great earthquakes off southwest Honshu. The Tonankai and Nankaido earthquakes were relatively early compared to the historical record of past occurrence, and the Tokai section of the Tonankai fault did not fail in 1944 whereas it probably had for the previous ~1000 years. We show that both phenomena can be explained by postseismic strain diffusion from the great Nobi, Japan, earthquake (M 8.0) in 1891. It is believed to have produced stress changes that influenced the time of occurrence of the great Tonankai (M 7.9) and Nankaido (M 8.0) earthquakes in the mid-1940's. The pattern of long-term viscoelastic deformation following the Nobi earthquake suggests that the failure threshold was reduced in the southwest section of the Nankai Trough, which may have acted to trigger the Tonankai and Nankaido events. In contrast, the threshold was increased in the eastern Tokai section of the thrust zone and therefore failure of this section may have been inhibited. We model fault failure and show that the stress levels from Nobi are adequate to account for the advance of Tonankai and the inhibition of Tokai.

Affiliated with

Also associated with

No associations

Rating

Triggering and inhibition of great Japanese earthquakes: the effect of Nobi 1891 on Tonankai 1944, Nankaido 1946 and Tokai 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 Triggering and inhibition of great Japanese earthquakes: the effect of Nobi 1891 on Tonankai 1944, Nankaido 1946 and Tokai, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Triggering and inhibition of great Japanese earthquakes: the effect of Nobi 1891 on Tonankai 1944, Nankaido 1946 and Tokai will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-920820