Geography Reference
In-Depth Information
Below we describe a modification of the GIS-EEDB high-tech expert
system called
Fukushima
-EEDB
and illustrate its use with examples for the
seismicity of the Fukushima Prefecture area in Japan [5, 45].
P
ART
2.
M
ODIFICATIONS AND
V
ERSIONS OF
E
EDB FOR
D
IFFERENT
G
EODYNAMIC
A
REAS AND
C
ASE
S
TUDIES OF
S
EISMICITY
A
NOMALIES
A. V. Mikheeva
The EEDB subsystems are shown in the work flow chart of Figure 15.
It is appropriate to apply the EEDB potentialities to study seismic activity
in the Fukushima Prefecture which was exposed to the Great East Japanese
Earthquake of
M
w
= 9.0 of 11.03.2011, called also the 2011 off the Pacific
Coast Tohoku-oki Earthquake by JMA, or shortly the Tohoku earthquake. We
have limited the study to the area within 36-39°N, 138-146°E.
The adaptation and modification of the GIS-EEDB system to the local
features of the area consists in.
1)
Creating an optimal database using the regional earthquake data;
adapting the instrumental programs for processing the regional data
and converting it to the EEDB seismological subsystem format;
2)
Developing a geographical system of regional EEDB version for
qualitative visualization and analysis of seismic data from the region.
Populating the EEDB geographical subsystem with detailed
geographical data from the prefecture using ASTER GDEM (for the
shaded relief model realized in EEDB) and the Natural Earth (for
detailed cultural and physical layers in the vector and point formats);
3)
Adapting the methods and algorithms to statistical processing of
seismic data in terms of local geodynamics. Applying comprehensive
geoinformation analysis to learn the common patterns and anomalies
of seismicity in the region.
This preparatory work was carried out for the Fukushima Prefecture in the
environment of supported applications to complement the resources of EEDB,
and was followed by a preliminary seismicity analysis in the adapted
Fukushima-EEDB system. At the same time, the development environment of
