Figure F15. Test tilt combo records from Matsushiro vault Seismological Observatory. Geophone (GEO 1 and GEO 2), accelerometer (ACC 1 and ACC 2), tiltmeter (N8068 and N8069), and reference seismometers CMG3T (CMG3T 360s and CMG3T 120s) as reference seismometer were installed in Matsushiro Seismological Observatory. East–west component records for an hour of each sensors are shown.
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