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█ Latest Earthquake Information
The following information was automatically determined by the NIED Hi-net system.    See for details
Origin Time (JST) Apr 22, 2018 04:31:17.46
Latitude 43.590N
Longitude 146.587E
Depth 72.9km
Magnitude 2.9

Hypocenter Map
█ Earthquake Information by AQUA system Mechanism Solution Catalog
An earthquake occurred in/around the "NEAR CHOSHI CITY" on Apr 21, 18:47 (JST).
- Apr 21, 2018 18:47:44 (JST) Announcement
- Apr 21, 2018 18:52:55 (JST) Update
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What is "AQUA" System? (in Japanese)
Max . Amplitude Distribution Maps (in Japanese)
█ Notice of Hi-net Past Notice
Mar 01, 2018:  The guidance of the updating user account 2018.
Mar 01, 2018:  Software to show 3D seismic velocity structure beneath Japan
Jan 07, 2015:  We started the continuous waveform data download service for ADEP.
Oct 01, 2014:  We started the continuous waveform data download service for JAMSTEC[DONET1].
█ Recent Large Earthquake
   Apr 21, 2018 (JST)   NEAR CHOSHI CITY   M5.0
- Criteria   - Epicenter on the GSI maps   - Back number
◤Earthquake Information ↓ Clickable
Hypocenter Region NEAR CHOSHI CITY
Origin Time (JST) Apr 21, 2018 18:47:19.30
Latitude 35.55N
Longitude 141.09E
Depth 29km
Magnitude 5.0
◤Mechanism Solution Information
Plane1 Strike/Dip 161.2˚/56.4˚
Plane2 Strike/Dip 291.6˚/45.7˚
P-Axis Azimuth/Take-off 228.4˚/84.1˚
T-Axis Azimuth/Take-off 127.1˚/27.7˚
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High Sensitivity Seismograph Network Laboratory, Network Center for Earthquake, Tsunami and Volcano,
National Research Institute for Earth Science and Disaster Resilience.
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