Very low frequency earthquakes within accretionary prisms are very low stress-drop earthquakes

Details Very low frequency earthquakes within accretionary prisms are very low stress-drop earthquakes Very low frequency earthquakes within accretionary prisms are very low stress-drop earthquakes

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3309302i&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 9, CiteID L09302

Physics

16

Seismology: Body Waves, Seismology: Earthquake Source Observations (1240), Seismology: Subduction Zones (1207, 1219, 1240), Tectonophysics: Dynamics And Mechanics Of Faulting (8004), Tectonophysics: Subduction Zone Processes (1031, 3060, 3613, 8413)

Scientific paper

We report characteristic P wave spectra and stress drops of very low frequency (VLF) earthquakes that occurred within the accretionary prism along the Nankai Trough, southwestern Japan. Although many VLF earthquakes showed no distinct phases on a raw seismogram, a few showed slightly distinct phases. The arrival times of some phases were consistent with the calculated P wave arrival times. The corner frequencies of the VLF earthquakes were calculated using the stacked P wave spectra assuming an omega-square spectrum. Stress drops were very low, i.e., in the range of 0.1-10 kPa, which corresponds to 0.1%-1% of those of ordinary earthquakes. Such extremely low stress drops of the VLF earthquakes suggest that the fault strength within the accretionary prism may have weakened due to the existence of a fluid within the thrust fault system of the accretionary prism.

Affiliated with

Also associated with

No associations

Rating

Very low frequency earthquakes within accretionary prisms are very low stress-drop earthquakes 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 Very low frequency earthquakes within accretionary prisms are very low stress-drop earthquakes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Very low frequency earthquakes within accretionary prisms are very low stress-drop earthquakes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1007528