Posts Tagged With: earthquake

Minor tsunami hits northeastern Japan after strong quake


A minor tsunami hit Miyagi prefecture in Japan early Saturday after a strong 6.8-magnitude quake jolted the country’s northeastern Pacific coast, prompting advisories for regions including around the crippled Fukushima nuclear plant.

A tsunami of 20 centimetres was observed at 5.12 am (2012 GMT Friday) in Ishinomaki, Miyagi prefecture, the Japan Meteorological Agency said.

The agency had issued a tsunami advisory for Miyagi as well as neighbouring Fukushima and Iwate prefectures, warning that a wave of up to one metre (3.3 feet) could impact their Pacific coastlines after the quake.

Large areas of the coastline covered by the advisory are still recovering from the 2011 quake and tsunami disaster that killed more than 18,000 people and triggered a meltdown at the Fukushima Daiichi nuclear plant.

Plant operators Tokyo Electric Power (TEPCO) said there were no immediate reports of abnormality after Saturday’s quake.

“We have not seen any damage or any change in radiation gauges after the quake,” said TEPCO spokesman Masahiro Asaoka.

“Today’s operation has yet to start but we ordered workers to evacuate to high places,” Asaoka said.

The meteorological agency advised people to leave the coast immediately, while Japan’s public broadcaster NHK said some local authorities had issued evacuation advisories to their residents.

Kyodo said the city of Iwate had issued an evacuation advisory.

The United States Geological Survey said the quake struck around 129 kilometres (79 miles) east south-east of the city of Namie, an estimated 284 kilometres (176 miles) east north-east of the capital Tokyo, at 4.22 am local time (1922 GMT Friday).

The Fukushima plant’s cooling systems were swamped by the 2011 tsunami, sparking reactor meltdowns and radiation leaks in the worst atomic crisis in a generation.

Tens of thousands of people were evacuated from around the plant, with decommissioning of the site expected to take decades.

The utility is struggling to handle a huge — and growing — volume of contaminated water.

On Friday, the crippled plant was skirted by tropical storm Neoguri. Workers had scrambled to insulate the plant from any storm damage, but Neoguri had little impact on the site as it headed out into the Pacific.

Japan is situated at the conjuncture of several tectonic plates and experiences a number of relatively violent quakes every year.

But thanks to strict building codes, even powerful quakes that might wreak havoc in other countries frequently pass without causing much damage.

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Magnitude-5.1 earthquake shakes Los Angeles…..


LOS ANGELES (AP) — A magnitude-5.1 earthquake centered near Los Angeles caused no major damage but jittered nerves throughout the region as dozens of aftershocks struck into the night.

The U.S. Geological Survey said the quake struck at about 9:09 p.m. Friday and was centered near Brea in Orange County — about 20 miles southeast of downtown Los Angeles — at a depth of about 5 miles. It was felt as far south as San Diego and as far north as Ventura County, according to citizen responses collected online by the USGS.

Broken glass, gas leaks, water main breaks and a rockslide were reported near the epicenter, according to Twitter updates from local authorities.

Eyewitness photos and videos show bottles and packages strewn on store floors. Southern California Edison reported power outages to about 2,000 customers following the quake.

More than two dozen aftershocks ranging from magnitudes 2 to 3.6 were recorded, according to the USGS. Earlier in the evening, two foreshocks registering at magnitude-3.6 and magnitude-2.1 hit nearby in the city of La Habra.

Public safety officials said crews were inspecting bridges, dams, rail tracks and other infrastructure systems for signs of damage. The Brea police department said the rock slide in the Carbon Canyon area caused a car to overturn, and the people inside the car sustained minor injuries.

Callers to KNX-AM reported seeing a brick wall collapse, water sloshing in a swimming pool and wires and trees swaying back and forth. One caller said he was in a movie theater lobby in Brea when the quake struck.

“A lot of the glass in the place shook like crazy,” he said. “It started like a roll and then it started shaking like crazy. Everybody ran outside, hugging each other in the streets.”

A helicopter news reporter from KNBC-TV reported from above that rides at Disneyland in Anaheim — several miles from the epicenter — were stopped as a precaution.

Hall of Fame announcer Vin Scully was on the air calling the Angels-Dodgers exhibition game in the sixth inning at Dodger Stadium.

“A little tremor here in the ballpark. I’m not sure if the folks felt it, but we certainly felt it here in press box row,” Scully said. “A tremor and only that, thank goodness.”

Tom Connolly, a Boeing employee who lives in La Mirada, the next town over from La Habra, said the magnitude-5.1 quake lasted about 30 seconds.

“We felt a really good jolt. It was a long rumble and it just didn’t feel like it would end,” he told The Associated Press by phone. “Right in the beginning it shook really hard, so it was a little unnerving. People got quiet and started bracing themselves by holding on to each other. It was a little scary.”

Friday’s quake hit a week after a pre-dawn magnitude-4.4 quake centered in the San Fernando Valley rattled a swath of Southern California. That jolt shook buildings and rattled nerves, but did not cause significant damage.

Southern California has not experienced a devastating earthquake since the 1994 magnitude-6.7 Northridge quake killed several dozen people and caused $25 billion in damage.

Preliminary data suggest Friday night’s 5.1 magnitude earthquake occurred near the Puente Hills thrust fault, which stretches from the San Gabriel Valley to downtown Los Angeles and caused the 1987 Whittier Narrows earthquake, USGS seismologist Lucy Jones said.

“It’s a place where we’ve had a lot of earthquakes in the past,” she said.

The 5.9 Whittier Narrows quake killed eight people and caused $360 million in damage

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Oregon’s Next Huge Earthquake: Not If, But When….


The clock is ticking on the next big earthquake in the Pacific Northwest, and experts fear it will be a monster

 

Following the deadly magnitude-9.0 Tohoku earthquake and tsunami that struck Japan in March 2011, Oregon legislators commissioned a study of the impact a similar quake could have on the state, according to the Associated Press.
The report, “Oregon Resilience Plan: Reducing Risk and Improving Recovery for the Next Cascadia Earthquake and Tsunami,” was presented to legislators Thursday (March 14).
Within its pages is a chilling picture of death and destruction that would cripple the entire Pacific Northwest, from Northern California to British Columbia.
More than 10,000 people led. Bridges, dams, roadways and buildings — including Oregon’s State Capitol in Eugene — in a state of utter collapse. No water, electricity, natural gas, heat, telephokilne service or gasoline — in some cases, for months. Economic losses in excess of $30 billion.

The seismically active region has felt temblors before, most notably a massive earthquake and tsunami in January 1700 that wiped out entire forests in what is now Oregon and Washington and caused a deadly tsunami in Japan, thousands of miles across the Pacific Ocean. [Waves of Destruction: History’s Biggest Tsunamis]
“This earthquake will hit us again,” Kent Yu, chair of the commission that developed the report, told Oregon legislators, according to the Daily Mail. “It’s just a matter of how soon.”
That titanic 1700 shaker was a megathrust earthquake on the Cascadia Fault, a seismic zone that stretches for almost 700 miles (1,100 kilometers) just off the Pacific Northwest coast. Based on current understanding of the fault’s seismic history, scientists estimate quakes occur along the line roughly every 240 years.
In other words, another big Cascadia Fault earthquake is “long overdue,” the International Science Times reports.
The report also noted that, geologically speaking, Japan and Oregon are mirror images of each other. There is, however, one important difference: Japan is much more prepared for earthquakes.
And Oregon is hardly the only region of North America overdue for a large earthquake: The Lake Tahoe region on the California-Nevada border is home to the West Tahoe Fault, which generally sees a quake every 3,000 to 4,000 years, and the most recent temblor occurred 4,500 years ago.
Elsewhere in California, the southern San Andreas Fault last produced a big temblor in 1690, and has been relatively quiet ever since. That isn’t good news, since a major earthquake usually occurs there every 180 years, according to recent research, and the fault line now has more than 300 years of pressure built up.
Whereas the West Coast is usually considered the most seismically active region of North America, the East Coast also has earthquakes, just not as often. Fault lines have recently been discovered near New York City, and the Indian Point nuclear power plant, about 24 miles (39 km) north of the city, straddles the previously unidentified intersection of two active seismic zones.
In virtually all of these regions, preparation for earthquakes has been woefully inadequate, say many experts. Maree Wacker, chief executive officer of the American Red Cross of Oregon, laments the state of readiness: “Oregonians as individuals are underprepared,” Wacker told the Daily Mail.

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Magnitude 7.7 quake strikes off Canadian coast……


A magnitude 7.7 earthquake struck off the west coast of Canada, but there were no reports of major damage. Residents in parts of British Columbia were evacuated, but the province appeared to escape the biggest quake in Canada since 1949 largely unscathed.
The U.S. Geological Survey said the powerful temblor hit the Queen Charlotte Islands just after 8 p.m. local time Saturday at a depth of about 3 miles (5 kilometers) and was centered 96 miles (155 kilometers) south of Masset, British Columbia. It was felt across a wide area in British Columbia, both on its Pacific islands and on the mainland.

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08:58 EST..BREAKING NEWS..Strong earthquake hits Costa Rica


SAN JOSE, Costa Rica (Reuters) – A strong 7.9 earthquake rocked Costa Rica on Wednesday, rattling buildings and cutting power in some areas of the capital of San Jose, a Reuters correspondent and the U.S. Geological Survey reported.

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BREAKING NEWS: 7.9-quake off Philippines triggers tsunami alert


MANILA, Philippines (AP) — A 7.9-magnitude undersea quake struck off the eastern coast of the Philippines late Friday, triggering tsunami warnings across a wide swath of Asia. There were no immediate reports of damage or injury.

A tsunami alert was in effect for the Philippines, Indonesia, Taiwan, Japan, Guam, the Northern Marianas and Papua New Guinea, the Pacific Tsunami Warning Center said.

The quake hit at a depth of 34.9 kilometers (21.7 miles) and was centered 106 kilometers (66 miles) east of Samar Island, the U.S. Geological Survey said.

The head of the Philippine seismology agency, Renato Solidum, said his bureau recorded a preliminary magnitude of 7.7. He said that residents living along the coastline of eastern Samar Island were advised to evacuate to high ground in case of the tsunami.

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