Application of parallel algorithm to real-time
seismology and performance test
RESERCH PROJECT LEADER
Nakanishi Ichiro
RESARCH DURATION
1997 - 1998
ORGANOZAITION, POSITION
Faculty of Science, Kyoto Universtiy, Assistant
Professor
Abstract of Research Project:
Application of genetic algorithm to earthquake
location. The aim is to stabilize the location
and to decrease the CPU time. The application
has been successfull. We can obtain the reliable
location even if the seismological network
is small.
Analyses of the data from network system
for observation of earthquake response over
Kyoto area. The final is the rapid estimation
of seismic intensity and the related damage
in urban area. We have made the codes for
earthquake location, determination of source
mechanism, waveform inversion for moment
tensor, and the estimation of seismic intensity.
We have applied the codes to the data from
the small network in the city of Kyoto.
CMT inversion of broad-band strong-motion
seismograms for near-distance large earthquake.
The present broad-band network in Japan is
week against the strong-motion. We examine
the performance of the broad-band strong-motion
seismographs to solve the problem. Regional
network consisting of 10 stations is enough
to recover the source process of great earthquake.
Three-dimensional inversion of moment release
in the source area. Previous studies assume
fault planes in the inversion of moment relaese.
Our approach does not have such a constraint
on the fault planes. We have applied the
method to the 1995 Hyogoken- Nanbu earthquake
and we obtained an intersting relation between
the large moment releases and the aftershock
activity in the source area.
