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An earthquake with a preliminary magnitude of 6.5 struck Japan's northernmost prefecture of Hokkaido late Saturday, leading to highway closures and causing blackouts in some areas, the weather agency and local officials said.
There were no reports of serious damage or nuclear power plant irregularities, with only a dozen of people sustaining minor injuries, they said. No tsunami occurred.
It is unclear whether there is any relation between the 11:17 p.m. Saturday temblor, the focus of which was the central part of the Tokachi region in Hokkaido at a depth of about 108 kilometers, and the March 2011 devastating quake that hit northeastern Japan, the Japan Meteorological Agency said early Sunday.
The latest quake registered upper 5 on the Japanese seismic intensity scale of 7 in Kushiro, Nemuro and Urahoro in the eastern part of Hokkaido, and lower 5 in Obihiro and other parts of the prefecture as well as in Higashidori, Aomori Prefecture, according to the agency.
The agency, which revised its magnitude from 6.4, advised residents to remain alert in the week ahead for aftershocks measuring up to around 4 on the Japanese scale.
Significant seismic activity has been recorded on the Pacific coast side of Hokkaido, with a magnitude 6.6 quake occurring in January 1987 near the epicenter of the latest one and M8.0 quake off the coast of Tokachi in September 2003.
"We cannot tell if the latest quake could touch off a bigger one. But please continue exercising caution," said Akira Nagai of the agency.
According to prefectural government officials, at least 12 people were slightly injured in the latest quake. Some fell or sustained cuts from breaking glass or sharp objects, while others received burns or were hit by falling objects, they said.
Hokkaido Electric Power Co. said there have been no abnormalities at its nuclear power plant in the village of Tomari in southwestern Hokkaido.
Tohoku Electric Power Co. also said no irregularities have been found at its nuclear power plant in the village of Higashidori, Aomori Prefecture, while Japan Nuclear Fuel Ltd. said there have been no problems at its nuclear fuel reprocessing facility in the village of Rokkasho in the prefecture.
About 840 households in five municipalities, including Kushiro and Urahoro, were temporarily without electricity, according to local authorities.
Some sections of the Doto and Obihiro-Hiroo expressways were briefly closed in the wake of the quake, the operator said.
Copyright 2013 Kyodo News
03/02/2013 16:36:07 42.7 13.2 10.3 Ml 1.8 ...
03/02/2013 16:34:47 42.7 13.2 10.5 Ml 2.3 ...
03/02/2013 16:34:37 42.7 13.2 10.6 Md 1.0 ...
02/02/2013 23:41:40 42.7 13.2 10.6 Ml 2.0 ...
Originally posted by MariaLida
reply to post by muzzy
Just a feeling ..
And that feeling is founded on a lot of information and calculations from all that I know also from lots of different fields ..
I tell you my friend already is very hard and complicate to explain, can't say or explain one influence when my every prediction is based on at least ten of them ..
I learn is the best way just to post prediction without explaining and nothing else because many many reasons ..
EQ's cant be predicted on some formula or similar or with only one influence you must know all influences what effecting EQ's then come research and practices with every field, after that coming calculation and only after that you can depend on feeling and try to make accurate prediction in majority percentage ..
Need years and years to make some experience and you need to make at lest 200 prediction to your self to start to post public etc, that's the only also the real way ..
For example if you're raw-stiff-bad-mannered etc in your head and not a very flexible however you sounded nicely you never will succeed in this only because at end you must feel all of this, hope you not have some bad feelings about what I saying also because my bad explanation and writing ..edit on 3-2-2013 by MariaLida because: (no reason given)
Also think in this 70 days we will have strong seizmic activity worldwide and M 8.0 + somewhere at "Ring of Fire" ..
The colors indicate the probability of an M>6.5 earthquake within 50 km of each site during the next year. A scale is shown at left for reference. The forecast uses methods based on observational laws including the Gutenberg-Richter relation and Omori-Utsu aftershock frequency laws. When the parameters are fit to past observations, future probabilities can be computed. Data are taken from the ANSS catalog of global seismicity. A critical part of the process of forecasting is validation and verification through backtesting and monitoring. Tests that are used to assess the quality of the forecast are the Reliability/Attributes test, and the Receiver Operating Characteristic test. These tests can be used to ascertain forecast reliability, resolution, skill and sharpness. The WWRP/WGNE Joint Working Group on Forecast Verification Research has a good description of tests. (Rundle et al, 2012)