From: Earthquake-induced prompt gravity signals identified in dense array data in Japan
Instrument | Channels used | Sampling rate (Hz) | Distance from the hypocenter | Output used |
---|---|---|---|---|
Superconducting gravimeter | 2 (Kamioka and Matsushiro) | 40 | 515 km (Kamioka), 436 km (Matsushiro) | Vertical gravity acceleration (m/s2) |
Broadband seismometer | 27 out of 71 (F-net) | 20 | From 505 to 1421 km | Vertical ground velocity (m/s) converted to acceleration (m/s2) |
Tiltmeter | 553 out of 1412 (Hi-net) | 20 | From 264 to 1349 km | Ground tilt (rad) converted to horizontal acceleration (m/s2) |