Coseismic gravity changes of the 2011 Tohoku-Oki earthquake from satellite gravimetry

Details Coseismic gravity changes of the 2011 Tohoku-Oki earthquake from satellite gravimetry Coseismic gravity changes of the 2011 Tohoku-Oki earthquake from satellite gravimetry

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3800g12m&link_type=abstract

Geophysical Research Letters, Volume 38, CiteID L00G12

Physics

2

Geodesy And Gravity: Time Variable Gravity (7223, 7230), Geodesy And Gravity: Satellite Geodesy: Results (6929, 7215, 7230, 7240), Geodesy And Gravity: Seismic Cycle Related Deformations (6924, 7209, 7223, 7230), Geodesy And Gravity: Space Geodetic Surveys (4337), Seismology: Subduction Zones (1207, 1219, 1240)

Scientific paper

The massive Tohoku-Oki earthquake of a moment magnitude (Mw) of 9.0 occurred on 11 March, 2011 off the Pacific coast of the Northeastern Japan. The mass redistribution in and around the focal region associated with this earthquake was studied using the gravity changes detected by Gravity Recovery and Climate Experiment (GRACE) satellite. After the 2004 Sumatra-Andaman and the 2010 Central Chile (Maule) earthquakes, the present study presents the third case of clear detection of coseismic gravity changes by GRACE. The observed gravity changes were dominated by decrease over the back-arc region of ˜7 μGal or less. This reflects, to a large extent, coseismic crustal dilatation of the landward plate. They agree well with the changes calculated with the Green's function for the realistic earth using fault parameters inferred from coseismic crustal movements. The spatial patterns of the gravity changes of these earthquakes are very similar because they are all shallow angle reverse faulting at convergent plate boundaries. We found linear relationship between gravity decreases and seismic moments.

Affiliated with

Also associated with

No associations

Rating

Coseismic gravity changes of the 2011 Tohoku-Oki earthquake from satellite gravimetry 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 Coseismic gravity changes of the 2011 Tohoku-Oki earthquake from satellite gravimetry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coseismic gravity changes of the 2011 Tohoku-Oki earthquake from satellite gravimetry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1401331