Japan Meteorological Agency (JMA)
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| Contact: |
Data Analysis Section |
| E-mail: | |
| Phone: | +81 3 3212-8341 |
| Fax: | +81 3 3212-6446 |
| Address: | Earthquake and Volcanic Engineering Affairs Division, Seismology and Volcanology Department, Japan Meteorological Agency, 3-6-9 Toranomon, Minato City, Tokyo 105-8431, Japan, Japan |
| Status: | active |
| Last data: | 2023-04-30 |
| Web page: | |
| Publications: | |
| Description: | To monitor earthquakes, JMA operates an earthquake observation network comprised of about 290 seismographs and 600 seismic intensity meters. It also collects data from over 3,600 seismic intensity meters managed by local governments and the National Research Institute for Earth Science and Disaster Prevention (NIED). The data collected are input to the Earthquake Phenomena Observation System (EPOS) at the headquarters in Tokyo and the Osaka District Meteorological Observatory on a real-time basis. When an earthquake occurs, JMA immediately issues information on its hypocenter, magnitude and observed seismic intensity. If the seismic intensity is 3 or greater, the Agency issues a Seismic Intensity Information report within one and a half minutes. The information is provided to disaster prevention authorities via dedicated lines, and reaches the public through local governments and the media. This information also plays a vital role as a trigger for the initiation of rescue and relief operations related to earthquake disasters. |
| History and Operations Document: | |
| Original data contributed to ISC: |
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