TOKYO: The toll from a magnitude-8.9 earthquake in Japan could exceed 10,000 in the hardest-hit prefecture of Miyagi alone, police said on Sunday, as other officials tried to reassure the public that reactors at two damaged nuclear power plants posed no immediate danger.
"I have no doubt" that the death toll would rise above 10,000 in the prefecture, public broadcaster NHK quoted police chief Takeuchi Naoto as saying.
About 800 deaths had been confirmed so far in Miyagi and other areas in northeastern Japan, which were hit Friday by the quake and a tsunami. No contact could be established with about 10,000 residents of the town of Minamisanriku.
Police said earlier that more than 2,000 people had been killed or were unaccounted for in the affected regions, the Kyodo News agency reported.
A municipal official in Futaba town in Fukushima prefecture told Kyodo that about 90 percent of the houses in three coastal communities had been washed away by the tsunami.
NORTH-EASTERN Japan can expect another monster earthquake large enough to trigger a tsunami within days, the head of the Australian Seismological Centre says.
The director, Kevin McCue, said there had been more than 100 smaller quakes since Friday, but a larger aftershock was likely.
''Normally they happen within days,'' he said. ''The rule of thumb is that you would expect the main aftershock to be one magnitude smaller than the main shock, so you would be expecting a 7.9.
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''That's a monster again in its own right that is capable of producing a tsunami and more damage.''
The Japanese quake was the result of a process called thrust faulting. A piece of the Earth's crust broke away at the juncture of the Eurasian and Pacific plates and was thrust underneath the islands of Honshu and Hokkaido.
The US Geological Survey estimated the quake moved the Japanese coast about 2.4 metres.
''It basically pushed the sea floor up and down on opposite sides of the fault by 10 metres, causing the tsunami,'' Dr McCue said. ''It is a sudden rupture that has occurred, but it has occurred because the two plates are converging at about eight centimetres a year and have been for about 100 years. That eight metres is released suddenly when the plate snaps and breaks and produces the earthquake.''
LATEST UPDATE: Japanese authorities race to combat the threat of multiple nuclear reactor meltdowns, as nearly 170,000 evacuate the quake and tsunami-ravaged area in fear of radiation exposure ...