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New 7.1 quake hits Japan as evacuation zone widens

Aftershock hits Japan on quake anniversary
Tokyo (AFP) April 11, 2011 - A powerful 6.6-magnitude aftershock hit northeastern Japan on Monday, triggering a brief tsunami alert and forcing the evacuation of workers battling to avert a crisis at a stricken nuclear plant. The tremor hit exactly one month after a 9.0-magnitude quake and tsunami ravaged northeastern Japan and knocked out cooling systems at the Fukushima Daiichi plant, triggering the worst nuclear crisis since Chernobyl. "The company ordered workers to withdraw and stay in a quake-proof building," said a spokesman for operator Tokyo Electric Power Company (TEPCO). "We don't know how many workers were involved."

TEPCO said the power supply to three stricken reactors at the plant was briefly cut, but later restored, and the injection of water into reactors one, two and three had resumed. However some monitoring systems had been knocked out by the quake. Emergency crews at the nuclear plant, which was crippled by the March 11 quake and tsunami, have been pumping in water to cool overheating reactors that have already caused several explosions. Radiation has leaked into the air, soil and sea, forcing local residents to evacuate their homes and leading several countries to restrict the import of food products from Japan.

The latest quake was given an initial magnitude of 7.1 by the US Geological Survey, which later revised it downward to 6.6. It hit 81 kilometres (50 miles) south of Fukushima city and 163 kilometres northeast of Tokyo and at a depth of 10 kilometres, causing buildings in the capital to shake. Authorities in Japan issued a tsunami alert, but later lifted it. The Pacific tsunami warning centre said no widespread alert had been generated. Tohoku-Electric Power Co. said power supply has been cut to some 220,000 households in Iwaki city, Fukushima prefecture, and other municipalities following the earthquake.

Media reports said a car had been buried in a landslide set off by the quake and several people injured in separate incidents, but this could not immediately be confirmed. The quake hit at 5:16pm (0816 GMT), as Prime Minister Naoto Kan prepared to deliver a live address to the nation on Monday to mark one month since Japan's worst quake in recorded history. He postponed the speech and urged emergency workers to do all they could to save lives in the aftermath of the latest quake.
by Staff Writers
Tokyo (AFP) April 11, 2011
Japan on Monday widened the evacuation zone around a stricken nuclear plant exactly a month on from a huge natural disaster as another 7.1 magnitude quake and tsunami alert strained nerves anew.

The latest aftershock caused buildings to sway in the capital Tokyo, shortly after the nation had observed a minute's silence to remember the 13,000 people killed in the March 11 disaster and the 15,000 who officially remain missing.

The US Geological Survey said the 7.1 onshore quake hit at 5:16 pm (0816 GMT) at a depth of just 13 kilometres (eight miles). Its epicentre was 81 kilometres south of Fukushima city, near the troubled nuclear plant.

Japan's meteorological agency warned that a one-metre (three foot) wave could hit Ibaraki prefecture, one of the areas pummelled by last month's massive tsunami, before cancelling the alert less than an hour later.

Another tremor of 7.1 on April 7 -- just one of thousands of aftershocks to hit the traumatised country -- killed at least two people and cut electricity across a huge area of northern Japan.

Workers battling to contain the crisis at the Fukushima-Daiichi nuclear plant were evacuated after the latest quake Monday, which briefly knocked out power to crippled reactors before electricity was restored.

People across the country had paused at 2:46 pm, the moment Japan's biggest ever recorded earthquake struck, setting off a chain of events that has left workers scrambling to tame runaway atomic reactors at the Fukushima plant.

It was the worst tragedy to envelop the country since World War II.

Prime Minister Naoto Kan promised Sunday he would "never abandon" tsunami survivors as he tried to focus attention on the future, despite the continuing high-stakes battle at the nuclear plant.

Kan, on only his second trip to the disaster zone in the month since the tragedy, said the government would "work as fast as possible" to house the more than 150,000 people still living in emergency shelters.

Underlining the threat of long-term health damage from radiation, the government on Monday said it was to widen the evacuation area around the atomic plant to include some towns outside the current 20-kilometre exclusion zone.

Those areas were liable to receive potentially hazardous radiation levels of 20 millisieverts per year, top government spokesman Yukio Edano said, while stressing there was no deterioration at the Fukushima plant.

Engineers at Fukushima who last week sealed a leak spewing highly contaminated water into the sea have begun installing a "silt curtain" to try to prevent radioactive mud from spreading around the ocean.

But at the same time, plant operator TEPCO is deliberately dumping more than 10,000 tonnes of mildly radioactive water into the ocean to free up urgently needed storage space for highly toxic liquid.

On Sunday one worker was taken to hospital after complaining of feeling sick, the operator said.

Masataka Shimizu, the president of Tokyo Electric Power Co. (TEPCO), on Monday visited Fukushima and apologised for the atomic emergency engulfing the area.

"I offer my personal apology from the bottom of my heart once again to the people in Fukushima prefecture and residents near the nuclear plant for having imposed such awful physical and mental burdens," he said.

Shimizu had wanted to go to the offices of the Fukushima prefecture government in the hope of meeting governor Yuhei Sato, but a local official said no meeting had taken place.

The official gave no reason, but Sato has previously refused to meet the boss of the embattled utility.

Proposals to lift the long shadow cast by Japan's disasters emerged over the weekend.

Tokyo's nationalistic governor, who was re-elected Sunday, said the vast city would bid for the 2020 Summer Olympics as part of efforts to boost recovery.

Shintaro Ishihara said Tokyo -- which lost out to Rio de Janeiro in the race to host the 2016 Olympics -- "can start raising our hand now" for the games.

The prime minister was expected later Monday to hold a press conference in Tokyo.

He will urge Japanese to avoid "excessive self-restraint", Jiji Press reported, amid repeated calls for seasonal "hanami" -- alcohol-fuelled cherry blossom viewing -- parties to be toned down.

Kan is worried that "stagnation in consumer spending caused by excessive self-restraint would be detrimental to the Japanese economy and reconstruction efforts in disaster-hit areas," Jiji reported, citing an unnamed official.

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