KansokuMou (English)

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Network system of seismic observation
in Kyushu Island

Shimabara Earthquake and Volcano Observatory (SEVO)

sets nine seismic

observation sites

within the Shimabara Peninsula

to observe the seismic

activity in detail of the volcano.

In addition, SEVO keeps

a seismic observation network

which includes

another sixteen micro-earthquake

observation sites

to keep observation of

seismicity in and around

the Kyushu island.

Seismic data obtained

at each sites are

transmitted to SEVO

in realtime by

the satellite-relay telemetering system.

Data so collected are

automatically processed

by the computer at SEVO.

Satellite-relay telemetering

system makes it

possible to receive

data from

observation sites

operated by other universities.

And through this system,

we also exchanges

data with Kagoshima, Tokyo, Kouchi and other Universities.

Furthermore, data

gathered from university

observation networks

all over

Japan are transmitted

in realtime to the Japan Meteorological Agency and

used for monitering

seismic activity all

over Japan and also

in the world.

	Seismograph (this side) and tiltmeter (far side) set up at the deep end of an observation tunnel.	A parabolic antenna (2.4 meters across) for transmitting and receiving seismic data, placed at the housetop of SEVO.

	Seismic data receiving and processing systems at SEVO.

	View of a seismic observation site: Various sensors are set up in an opposite end of the observation tunnnel which has a total length of 30 meters. Seismic data are transmitted from a parabolic antenna placed at the entrance of the tunnel.