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Home » Special Events » Magnitude 6.8 earthquake near eastern Honshu, Japan
last updated: 07/23/08 10:49.37 (PDT)
On Wednesday July 23 2008 at 8:26 AM (PDT) the USArray seismic network recorded an earthquake (preliminary Mw 6.8) located near eastern Honshu.
Initial source parameters for this tremor are indicated below. The epicentral distance (i.e. distance separating the epicenter and the closest station in the recording network, NLWA) for the USArray is 7209 km (64.86 degrees).
If you felt the quake, the USGS would like to know. Please add your comments to the USGS page "Did you feel it?".
Location Maps
The red star denotes the earthquake epicenter. Triangle symbols are active stations at the time of the earthquake in the USArray (excluding ANSS backbone stations, which are represented by a diamond symbol) and colored by network. Gray lines are major rivers.
Global View:
Regional View:
| Transportable Array (TA) | |
| UC San Diego (AZ) | |
| CalTech (CI) | |
| UN Reno (NN) | |
| Uni. Utah (UU) | |
| ANSS backbone stations (US) |
Solution Parameters
| Solution Parameters | |
|---|---|
| Local Date: | Wednesday July 23, 2008 |
| Local Time: | 8:26 AM PST |
| Universal Time: | 07/23/08 (205) 15:26.20 UTC |
| Magnitude: | 6.8 Mw |
| Latitude: | 39.7950 |
| Longitude: | 141.4270 |
| Depth: | 112 km |
| Author: | QED |
| Authoritative: | yes |
Waveforms
You may view plots showing this event as recorded by USArray instruments:
- Vertical components from every eighth USArray station that recorded the event across the whole network
- 3 components recorded by the closest USArray station to the event: small | large
Proximity to Population Centers
- 25 km (15 miles) ENE of Morioka, Honshu, Japan
- 80 km (50 miles) S of Hachinohe, Honshu, Japan
- 115 km (70 miles) E of Akita, Honshu, Japan
- 480 km (300 miles) NNE of Tokyo, Japan
News Links
- USGS page for this event
- Reuters: "Strong quake jolts northern Japan"
- Associated Press: "Magnitude 6.8 quake hits off northern Japan coast"
Search the internet
To search the internet for more information about this event, click on the button below:
Current seismic activity measured by USArray
Click the links below to observe near real time maps of earthquakes recorded by the USArray deployment:
Further information
Learn more about the Array Network Facility (ANF) component of USArray, the USArray experiment, the EarthScope project, and the Incorporated Research Institutions for Seismology (IRIS).
