Showing posts with label Pacific Tsunami Warning Center. Show all posts
Showing posts with label Pacific Tsunami Warning Center. Show all posts

Sunday, April 3, 2011

Magnitude-6.7 earthquake hits Indonesia

Hundreds of residents fled an Indonesian port town for higher ground on Monday when an earthquake struck south of Java with a magnitude estimated by US seismologists at 6.7.

The epicentre in the Indian Ocean was 24 kilometres (15 miles) miles deep, the US Geological Survey said, after initially estimating it at 10 kilometres underground, and 277 kilometres south of the Javanese coast.

Indonesian seismologists put the magnitude at 7.1 and issued a tsunami warning, saying the tremor had the potential to cause a killer wave and asking recipients of its public alert SMS to warn others of the danger.

The warning was later cancelled.

When the quake struck hundreds of residents in the seaport town of Cilacap fled inland and to higher ground by motorbike, car and on foot, an AFP reporter said.

"They were all panicking and shouting 'quake, quake'," the reporter said.

Suharjono, the technical head of Indonesia's Meteorology and Geophysics Agency, who like many Indonesians uses only one name, said shaking from the tremor had been felt in Pangandaran and Cilacap districts in Java.

"This quake roused people from their sleep," he said. "We have not received any reports of damage or casualties so far."

The US Pacific Tsunami Warning Centre had said that there was no risk of a widespread destructive wave, but there was a "very small possibility of a local tsunami".

The earthquake epicentre was 241 kilometres from the remote Australian territory of Christmas Island, and seismologists said the tremor was felt there, but no tsunami warning alert was issued for Australia.

"We had reports from there that they felt it," Geoscience Australia seismologist David Jepson told AFP, adding that it was described as a "moderate type quake".

Geoscience Australia put the quake at 6.7 magnitude.

Sunday, March 13, 2011

Dead toll to Japan's tragedy continues to rise

SENDAI, Japan (AP) --

The estimated death toll from Japan's disasters climbed past 10,000 Sunday as authorities raced to combat the threat of multiple nuclear reactor meltdowns and hundreds of thousands of people struggled to find food and water. The prime minister said it was the nation's worst crisis since World War II.

Nuclear plant operators worked frantically to try to keep temperatures down in several reactors crippled by the earthquake and tsunami, wrecking at least two by dumping sea water into them in last-ditch efforts to avoid meltdowns. Officials warned of a second explosion but said it would not pose a health threat.

Near-freezing temperatures compounded the misery of survivors along hundreds of miles (kilometers) of the northeastern coast battered by the tsunami that smashed inland with breathtaking fury. Rescuers pulled bodies from mud-covered jumbles of wrecked houses, shattered tree trunks, twisted cars and tangled power lines while survivors examined the ruined remains.

One rare bit of good news was the rescue of a 60-year-old man swept away by the tsunami who clung to the roof of his house for two days until a military vessel spotted him waving a red cloth about 10 miles (15 kilometers) offshore.

The death toll surged because of a report from Miyagi, one of the three hardest hit states. The police chief told disaster relief officials more than 10,000 people were killed, police spokesman Go Sugawara told The Associated Press. That was an estimate — only 400 people have been confirmed dead in Miyagi, which has a population of 2.3 million.

According to officials, more than 1,800 people were confirmed dead — including 200 people whose bodies were found Sunday along the coast — and more than 1,400 were missing in Friday's disasters. Another 1,900 were injured.

For Japan, one of the world's leading economies with ultramodern infrastructure, the disasters plunged ordinary life into nearly unimaginable deprivation.

Hundreds of thousands of hungry survivors huddled in darkened emergency centers that were cut off from rescuers, aid and electricity. At least 1.4 million households had gone without water since the quake struck and some 1.9 million households were without electricity.

While the government doubled the number of soldiers deployed in the aid effort to 100,000 and sent 120,000 blankets, 120,000 bottles of water and 29,000 gallons (110,000 liters) of gasoline plus food to the affected areas, Prime Minister Naoto Kan said electricity would take days to restore. In the meantime, he said, electricity would be rationed with rolling blackouts to several cities, including Tokyo.

"This is Japan's most severe crisis since the war ended 65 years ago," Kan told reporters, adding that Japan's future would be decided by its response.

In Rikuzentakata, a port city of over 20,000 virtually wiped out by the tsunami, Etsuko Koyama escaped the water rushing through the third floor of her home but lost her grip on her daughter's hand and has not found her.

"I haven't given up hope yet," Koyama told public broadcaster NHK, wiping tears from her eyes. "I saved myself, but I couldn't save my daughter."

A young man described what ran through his mind before he escaped in a separate rescue. "I thought to myself, ah, this is how I will die," Tatsuro Ishikawa, his face bruised and cut, told NHK as he sat in striped hospital pajamas.

Japanese officials raised their estimate Sunday of the quake's magnitude to 9.0, a notch above the U.S. Geological Survey's reading of 8.9. Either way, it was the strongest quake ever recorded in Japan, which lies on a seismically active arc. A volcano on the southern island of Kyushu — hundreds of miles (kilometers) from the quake' epicenter — also resumed spewing ash and rock Sunday after a couple of quiet weeks, Japan's weather agency said.



Read more: http://www.sfgate.com/cgi-bin/article.cgi?f=/n/a/2011/03/10/international/i222815S00.DTL#ixzz1GWmBA3nt

Friday, March 11, 2011

Massive quake unleashes tsunami on Japan

by Miwa Suzuki

TOKYO (AFP) – A massive 8.9-magnitude earthquake hit Japan on Friday, unleashing a monster 10-metre 阪神淡路大震災(東急ハンズあたり)Image via Wikipediahigh tsunami that sent ships crashing into the shore and carried cars through the streets of coastal towns.
Many injuries were reported from Pacific coastal areas of the main Honshu island and the capital Tokyo, police said, while TV footage showed widespread flooding in the area. One person was confirmed dead.
A powerful 10-metre (33 feet) wall of water was reported in Sendai in northeastern Miyagi prefecture, media reported after a four-metre wave hit the coast earlier.

Helicopter footage showed massive inundation in northern coastal towns, where floods of black water sent shipping containers, cars and debris crashing through towns.
Mud waves were shown racing upstream along the Natori river in Sendai city, blanketing farm fields.
In the capital, where millions evacuated strongly swaying buildings, multiple injuries were reported when the roof of a hall collapsed during a graduation ceremony, police said.

Plumes of smoke rose from at least 10 locations in city, where four million homes suffered power outages. Port areas were flooded, including the carpark of Tokyo Disneyland.
The first quake struck just under 400 kilometres (250 miles) northeast of Tokyo, the US Geological Survey said. It was followed by several aftershocks, one as strong as 7.1.

"We were shaken so strongly for a while that we needed to hold on to something in order not to fall," said an official at the local government of the hardest-hit city of Kurihara in Miyagi prefecture.
"We couldn't escape the building immediately because the tremors continued... City officials are now outside, collecting information on damage," she told AFP by telephone.

Prime Minister Naoto Kan quickly assembled his cabinet after the quake hit, and the government quickly dispatched naval vessels from near Tokyo to the worst-hit northeastern area of Miyagi.

The quake, which hit at 14:46 pm (0546 GMT) and lasted about two minutes, strongly rattled buildings in greater Tokyo, the world's largest urban area and home to some 30 million people.

At least 10 fires were reported in Tokyo, where the subway system stopped, sirens wailed and people streamed out of buildings.

Japan sits on the "Pacific Ring of Fire", which is dotted with volcanoes, and Tokyo is situated in one of its most dangerous areas.

A tsunami warning was issued for Japan, Taiwan, Russia and the Mariana Islands, the Pacific Tsunami Warning Centre said.


"An earthquake of this size has the potential to generate a destructive tsunami that can strike coastlines near the epicentre within minutes and more distant coastlines within hours," the centre said in a statement.
It also put the territories of Guam, the Philippines, the Marshall Islands, Indonesia, Papua New Guinea, Nauru, Micronesia and Hawaii under a lower tsunami watch. Indonesia issued its own tsunami warning.

The quake sent the Nikkei share index plunging at the close while the yen fell sharply against the US dollar.
The mega-city of Tokyo sits on the intersection of three continental plates -- the Eurasian, Pacific and Philippine Sea plates -- which are slowly grinding against each other, building up enormous seismic pressure.

The government's Earthquake Research Committee has warned of a 70 percent chance that a great, magnitude-eight quake will strike within the next 30 years in the Kanto plains, home to Tokyo's vast urban sprawl.

The last time a "Big One" hit Tokyo was in 1923, when the Great Kanto Earthquake claimed more than 140,000 lives, many of them in fires. In 1855, the Ansei Edo quake also devastated the city.
In 1995 Kobe earthquake killed more then 6,400 people.

More than 220,000 people were killed when a 9.1-magnitude quake hit off Indonesia in 2004, unleashing a massive tsunami that devastated coastlines in countries around the Indian Ocean as far away as Africa.
Small quakes are felt every day somewhere in Japan and people take part in regular drills at schools and workplaces to prepare for a calamity.

Nuclear power plants and bullet trains are designed to automatically shut down when the earth rumbles and many buildings have been quake-proofed with steel and ferro-concrete at great cost in recent decades.
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