Strong mag. 6.0 earthquake - North Pacific Ocean, 620 km northeast of Tokyo, Japan, on Tuesday, 23 July 1968 at 23:02 (GMT)
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Strong magnitude 6.0 earthquake at 27 km depth
Depth: 26.7 km
Epicenter latitude / longitude: 40.387°N / 143.505°E (North Pacific Ocean, Japan)
Nearest volcano: Osore-yama (202 km / 126 mi)
Nearby towns and cities:
620 km (385 mi) NNE of Tokyo (pop: 8,336,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 6.3 x 1013 joules (17.5 gigawatt hours, equivalent to 15080 tons of TNT or 0.9 atomic bombs!) More info
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
|M 6.0||27 km||off the east coast of Honshu, Japan||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Aftershocks of the 6.0 quake North Pacific Ocean, 620 km northeast of Tokyo, Japan, 23 July 1968 23:02 GMT
More infoRecorded aftershocks, latest first (4 quakes):
- 11 Nov 1968 14:41 UTC| M 5.9 |27.1 km (16.8 mi) depth|25 km (15 mi) distance| USGS | Details
- 15 Sep 1968 10:50 UTC| M 6.0 |27.2 km (16.9 mi) depth|53 km (33 mi) distance| USGS | Strong mag. 6.0 earthquake - North Pacific Ocean, 656 km northeast of Tokyo, Japan, on Sunday, 15 September 1968 at 10:50 (GMT)
- 25 Aug 1968 09:13 UTC| M 5.7 |21.5 km (13.4 mi) depth|38 km (24 mi) distance| USGS | Details
- 25 Aug 1968 09:07 UTC| M 5.7 |21 km (13 mi) depth|32 km (20 mi) distance| USGS | Details