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Locations of Observatory Facilities
Whaite Circle: Disastorous Earthquakes since 1900
Red Triangles: Active Volcanoes
Star: ERI
Observatory Facilities Belonging to Earthquake Observation Center
Observatory Facilities Belonging to Volcano Research Center
Others
GO: Geophysical Observatory, TO: Tsunami Observatory,
SO: Seismic Observatory, VO: Volcanic Observatory,
VCO: Volcanic-Chemical Observatory
GEO: Geo-Electromagnetic Observatory
O: Observatory