Interferometric differential seismograph for use in seismic survey system for detection of on-site structure and magnitude of earthquake, has reflector support that is interferometrically connected with station support

摘要

The seismograph has supports anchored in a ground, and a station support. An interferometer and seismographic devices are embedded in the station support. A reflector support is interferometrically connected with the station support. A pair of seismic sensors is arranged in a radial manner, and interferometer devices are arranged in a central support. The sensors are arranged at a distance of ten kilometers, where differential distance changes of the supports are detected by an interferometric measuring device.