NIED Hi-net β Ver. [High Sensitivity Seismograph Network Japan]

Summary / Results
- Summary / Results
- Top Page
- What is Hi-net?
- How to use the data
- Basic knowledge for earthquake and seismology (in Japanese)
- Topics (in Japanese)
- Topics of slow event (in Japanese)
- Researches (in Japanese)
- SHINGEN-Kun (in Japanese)
- SHINGEN-Chan (in Japanese)
- 3-D Hypocenter Distribution using VRML Technology
- 3-D Hypocenter Distribution
- News Archive (in Japanese)
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NIED Hi-net
High Sensitivity Seismograph Network Japan
Hypocenter / Waveform
- Hypocenter / Waveform
- AQUA System
- What is "AQUA" System?
  (in Japanese)
- Catalog of Focal Mechanism
- Hi-net Hypocenter Maps
- Max. Amplitude Distribution Maps
  (in Japanese)
- Backnumber of Recent Large Earthquake
  (in Japanese)
- Continuous Waveform Images
- 100-trace Continuous Waveform Images
- Earthquake Info rmation at the Kanto-Tokai district, Japan
- Teleseismic Waveform
NIED Hi-net
High Sensitivity Seismograph Network Japan
Station Information
- Station Information
- Searching Station (in Japanese)
- Station Dataset (in Japanese)
- New Station(s) (in Japanese)
- Updated Station(s) (in Japanese)
- Operating Information (in Japanese)
NIED Hi-net
High Sensitivity Seismograph Network Japan
FAQ / Registration
- FAQ / Registration
- FAQ
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- User Registration
- Change your E-mail address or Password
- Update Your User Account 2023
- Question About the User Registration
NIED Hi-net
High Sensitivity Seismograph Network Japan
For Registered Users
- Login / For Registered Users
- Log-in / Log-out
- Continuous waveform data download
- Download site for longer-time data or data before March 2004
- Event waveform data download
- Preliminary Catalog by the Hi-net Automatic System
- JMA Unified Hypocenter Catalogs
- Epicentral distribution of deep low-frequency tremor in southwest Japan
- Catalog Download
- Azimuth information of the Hi-net borehole sensors (in Japanese)
- Borehole Sensors Maintenance History
- Response of Observation Equipments
- Hi-net WIN Channels Table
- Reporting the Research Result
- Manual / Tools
NIED Hi-net
High Sensitivity Seismograph Network Japan

█ Latest Earthquake Information

The following information was automatically determined by the NIED Hi-net system. See for details
Hypocenter Region	E OFF FUKUSHIMA PREF
Origin Time (JST)	Dec 09, 2023 21:09:31.18
Latitude	37.049N
Longitude	141.715E
Depth	44.1km
Magnitude	3.1

█ Earthquake Information by AQUA system

Mechanism Solution Catalog

	An earthquake occurred in/around the "SE OFF BOSO PENINSULA" on Dec 09, 16:03 (JST).
	- Dec 09, 2023 16:04:13 (JST) Announcement - Dec 09, 2023 16:08:02 (JST) Update

	You may have to reload the web page to see the latest information.
	What is "AQUA" System? (in Japanese) Max . Amplitude Distribution Maps (in Japanese)

█ Notice of Hi-net

Past Notice

Dec 04, 2023:	Information about Scheduled Maintenance
Mar 20, 2023:	Software to show 3D seismic velocity structure beneath Japan renewal
Mar 01, 2023:	The guidance of the updating user account 2023.
Jul 29, 2022:	Information about maintenance at stations N.ST1H, 2H, 3H, 4H, 5H, and 6H
Jun 14, 2019:	Digital Object Identifiers (DOIs) for Datasets at NIED��s seismograph networks (MOWLAS)

█ Recent Large Earthquake
Dec 09, 2023 (JST) SE OFF BOSO PENINSULA M4.7

- Criteria - Epicenter on the GSI maps - Back number
◤Earthquake Information		↓ Clickable
Hypocenter Region	SE OFF BOSO PENINSULA
Origin Time (JST)	Dec 09, 2023 16:03:45.31
Latitude	34.51N
Longitude	140.25E
Depth	72km
Magnitude	4.7

◤Mechanism Solution Information
Plane1 Strike/Dip	87.1˚/37.4˚
Plane2 Strike/Dip	315.7˚/63.2˚
P-Axis Azimuth/Take-off	268.6˚/28.3˚
T-Axis Azimuth/Take-off	26.3˚/76.0˚

▶Policies | ▶How to use the data | ▶Contact us | ▶Web site for mobile phones (in Japanese)

We, NIED, do not deliver any e-mails of immediate seismic information obtained by the AQUA system.
In addition, please understand that we prohibit the redistribution of the seismic data. For more information, please read How to use the Hi-net data and FAQ.

High Sensitivity Seismograph Network Laboratory, Network Center for Earthquake, Tsunami and Volcano,
National Research Institute for Earth Science and Disaster Resilience.
3-1 Tennodai, Tsukuba City, Ibaraki Prefecture, 305-0006, JAPAN
Copyright © National Research Institute for Earth Science and Disaster Resilience, All rights Reserved.