Posts Tagged ‘Earthquake

15
Jun
10

5.7 earthquake rattles U.S. – Mexico border region

NEWS
5.7 earthquake rattles U.S. – Mexico border region

Tuesday, June 15, 2010

Earth••• An earthquake has rocked Southern California, shaking the Los Angeles area and forcing a halt to the Toronto Blue Jays-San Diego Padres baseball game in San Diego.

The U.S. Geological Survey says the magnitude-5.7 quake was 5 miles southeast of Ocotill, near the U.S. – Mexico border.

It struck on Monday at about 9:26 pm PDT.

The quake was initially reported as a magnitude-5.9 temblor.

It was felt as a gentle rolling motion in Los Angeles, Long Beach and Orange County.

San Diego’s Petco Park swayed during the earthquake, and the public address announcer asked that everyone at the ball game remain calm. The crowd cheered.

The Padres’ David Eckstein had just grounded out in the bottom of the inning when the stadium began shaking.

The next batter, Chase Headley, stayed out of the batter’s box for a few seconds, then stepped in.

San Diego Sheriff’s dispatch supervisor, Becky Strahm, said some of her colleagues reported things falling off their shelves, but there were no immediate reports of significant damage or injury.

The quake follows a series of temblors that struck Southern California over the weekend, including a pair of moderate earthquakes that rattled a desert area east of San Diego.

Residents in downtown San Diego could feel the ground rumbling during at least one of the Saturday quakes.

There are no immediate reports of damage or injuries from Monday night’s earthquake.
• Latest News & Headlines » Home «
• Source(s): USGS
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05
Apr
10

Three Killed, 233 Injured In Baja Quake Felt Throughout Southwest

NEWS
Three Killed, 233 Injured In Baja Quake Felt Throughout Southwest

Monday, April 5, 2010

Earth••• The death toll from Sunday’s 7.2 Baja earthquake felt across the Southwest increased to three Monday, with at least 233 people, mostly in the Mexican border town of Mexicali, reporting injuries, according to reports.

The Southern California Seismic Network recorded the quake shortly after 3:40:41 PDT.

The US Geological Survey said the 7.2 magnitude quake struck in Baja, California, about 104 miles east-southeast of Tijuana.

CNN reported the earthquake was stronger than the one that hit Haiti in January, and shook highrise buildings hundreds of kilometres away in Los Angeles and San Diego.

There have been a series of aftershocks in the region, with several topping magnitude 5 according to data recorded by the U.S. Geological Survey.

One person was killed when a building collapsed in Mexicali, the capital of Baja California, according to the assistant director of civil protection in Tijuana, CNN reported.
Mexicali, a city of 900,000 people, is just 11 miles from the epicentre and there were reports of sides of buildings falling apart, telephone poles collapsing and roads cracking.

But there were no reports of major damage or casualties in the US from the earthquake, which struck at 3:40 pm PDT at a depth of 6 miles, 16 miles south-southwest of Guadalupe Victoria, Baja California, Mexico.

Twitter users reported that Disneyland was evacuated. People were stuck in lifts and of many reported water sloshing out of swimming pools.

A spokesperson for Disneyland told that all rides were initially closed down following the earthquake, but they are back operating as normal.

“Our normal protocol following an earthquake is to cycle out all attractions for a safety inspection,” the spokesperson said. “We have no reports of injury or damage. Nearly all attractions have been inspected and are back online.”
The strong earthquake south of the U.S. – Mexico border shook high-rises in downtown Los Angeles and San Diego and was felt across Southern California and Arizona.

Residents said the quake shook “for a long time”.

“We felt it for about 30 seconds. It was rolling,” San Diego County Sheriff’s Lt. Scott Ybarrondo told CNN. “Nothing fell off the walls here, but we have reports of pictures falling off walls elsewhere in the county.”

The quake was felt as far north as Santa Barbara, USGS seismologist Susan Potter said.

A 4.1-magnitude tremor was recorded near Santa Rosa, in northern California, about nine minutes after the Baja California quake, CNN said. The USGS recorded a 5.1 aftershock 1 mile from Imperial, California.

People trapped in lifts, buildings damaged

In LA, the city fire department went on “earthquake status”, and some stalled lifts were reported. No damage was reported in LA or San Diego.
One woman called firefighters and said she was stuck in a lift descending from the 34th floor in a building in Century City, but there was no way to immediately know if the breakdown was tied the quake, LA firefighter Eric Scott said.

Los Angeles City Fire Department crews responded to people trapped in stalled elevators in the city, but there were no reports of serious damage, power outages or injuries in L.A.

In San Diego several buildings and water mains were reported damaged, according to the San Diego Fire Department.
While in Yuma, Arizona, the sheriff’s department said it was responding to building alarms.
The quake was felt for about 40 seconds in Tijuana, Mexico, causing buildings to sway and knocking out power in parts of the city. Families celebrating Easter ran out of the homes, with children screaming and crying.
Baja California state Civil Protection Director Alfredo Escobedo said there were no immediate reports of injuries or major damage. But he said the assessment was ongoing.

In the Phoenix area, Jacqueline Land said her bed in her second-floor apartment felt like a boat gently swaying on the ocean.

“I thought to myself, ‘That can’t be an earthquake. I’m in Arizona,'” the Northern California native said. “And I thought, ‘Oh my God, I feel like I’m nine years old.'”
Mike Wong, who works at a journalism school in downtown Phoenix, said he was in his second-floor office getting some work done when he heard sounds and felt the building start to sway.

“I heard some cracking sounds, like Rice Krispies,” coming from the building, he said. “I didn’t think much of it, but I kept hearing it, and then I started feeling a shake. I thought, ‘You know what? I think that might be an earthquake.”

Mr Wong said the swaying lasted for “just a few seconds”, and he didn’t notice any damage.

“Because of the location of the earthquake, it will have been felt by a large number of people,” said Susan Potter, a geophysicist with the USGS told The Wall Street Journal.

Within an hour of the earthquake, more than 4000 people had filed reports with the USGS saying they had felt shaking.

By comparison, the earthquake that hit Haiti on January 12 was a 7.0 magnitude earthquake. An earthquake that struck near Concepcion, Chile on February 27 was listed as an 8.8-magnitude earthquake.
• Source(s): USGS, CNN and Wall Street Journal
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26
Mar
10

6.2-magnitude quake strikes Chile

NEWS
6.2-magnitude quake strikes Chile

Friday, March 26, 2010

Earth

••• Chile has been hit by yet another earthquake on Friday, 375 miles to the north of the country’s capital, Santiago.

The epicentre was some 50 miles south west of the city of Copiapo, at a depth of 140 miles. Its effects were felt as far away as Santiago, according to the U.S. Geological Survey.

The quake struck a few minutes before noon (10:52 a.m. local time). There have been no immediate reports of injuries or damage.

A deadly 8.8-magnitude earthquake rocked Chile on Feb. 27, killing 425 people and leaving 500,000 others homeless. It was the fifth strongest on record since 1900 and as expected has produced hundreds of aftershocks, mostly minor ones but also including two of 6.9 magnitude.

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23
Mar
10

Former U.S. presidents Bush, Clinton visit Haiti

NEWS
Former U.S. presidents Bush, Clinton visit Haiti

Tuesday, March 23, 2010

••• Former Presidents George W. Bush and Bill Clinton clasped hands with residents of one of Haiti’s massive tent cities Monday on a tour of its quake-devastated capital – a visit intended to remind donors of the immense needs facing the recovery effort.

The two former leaders, who were tapped by President Barack Obama to spearhead U.S. fundraising for the crisis, made their first joint visit as part of the mission to raise aid and investment for the impoverished Caribbean nation.

At a news conference with President René Préval on the grounds of the collapsed national palace, Bush said he was struck by the devastation caused by the Jan. 12 earthquake.

“It’s one thing to see it on TV, it’s another to see it firsthand,” said Bush, who was making his first visit to Haiti. “Hopefully our visit will remind people that Haiti needs help.”

Clinton and Bush later greeted quake survivors camped on the Champ de Mars, the national mall filled with 60,000 homeless people.

While many of the homeless welcomed the visit as a sign that the U.S. would continue to supply aid, some said they were disappointed the presidents did not bring anything more tangible.

“The visit is like no visit at all. They walked inside, it’s to show off,” said René Pierre, a 35-year-old homeless man.

About 100 supporters of ousted President Jean-Bertrand Aristide staged a protest outside the national palace, burning tires and demanding the return of their exiled leader.

Clinton and Bush visit as the country struggles to feed and shelter victims of the magnitude-7 quake, which killed an estimated 230,000 people. Another 1.3 million quake survivors are homeless, with many living in camps prone to dangerous flooding in the April rainy season.

The former presidents also visited the Maxima SA woodworking plant where manager Evelien Degier, a native of the Netherlands, said they can build houses for $2,000. She said she hopes the presidents help direct investment to companies like hers that employ Haitians as part of the reconstruction effort.

“It’s wonderful to have the handouts and the food,” she said. “But now people need to go back to work to real life to earn real money.”

Risk of flooding

The 7.0-magnitude quake is believed to have killed at least 200,000 people and left another 1.3 million people homeless, with many living in makeshift camps at risk of flooding during the April rainy season.

Bush and Clinton’s visit aims to spotlight the dramatic need ahead of a critical March 31 U.N. donors conference in New York, where Haitian officials will ask for $11.5 billion U.S. in reconstruction help.

Bush’s trip to Haiti on Monday is his first to the Caribbean country. Clinton, who is the U.N. special envoy to the country, has made two visits since the quake and five in the past two years. He also visited as president.

The non-profit Clinton Bush Haiti Fund has raised roughly $37 million from 220,000 individuals, including Hollywood actor Leonardo DiCaprio, who gave $1 million, and Obama, who among other donations gave $200,000 of the $1.4 million he got with his Nobel Peace Prize.

About $4 million has gone to such organizations as Habitat for Humanity, the University of Miami/Project Medishare mobile hospital in Port-au-Prince and the U.S. branch of the Irish charity Concern Worldwide. The rest of the money has yet to be distributed.

The two former presidents have arguably shaped Haiti’s history as much as anyone alive today.

Clinton presided over a refugee crisis born of the 1991 ouster of Aristide, Haiti’s first democratically elected president. He returned Aristide to power in 1994 with a force of 20,000 U.S. troops.

Bush is remembered by many Haitians – especially the thousands in Port-au-Prince’s teeming slums – as the U.S. leader whose administration chartered the plane that flew Aristide back into exile during a 2004 rebellion.

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09
Mar
10

Chile Earthquake Moved Entire City 10 Feet to the West

NEWS
Chile Earthquake Moved Entire City 10 Feet to the West

Tuesday, March 9, 2010

Earth

••• The magnitude 8.8 quake that struck near Maule, Chile, Feb. 27 moved the entire city of Concepcion 10 feet to the west.

Precise GPS measurements from before and after the earthquake, the fifth largest ever recorded by seismographs, show that the country’s capital, Santiago, moved 11 inches west. Even Buenos Aires, nearly 800 miles from the epicenter, shifted an inch. The image above uses red arrows to represent the relative direction and magnitude of the ground movement in the vicinity of the quake.

The analysis comes from a project led by Ohio State earth scientist Mike Bevis that has been using GPS to record movements of the crust on Chile since 1993. The area is of particular interest to geoscientists because it is an active subduction zone, where an oceanic plate is colliding with a continental plate and being pushed into the Earth’s molten mantle below.

The world’s largest recorded earthquakes since 1900 have all occurred in subduction zones, including the largest quake ever recorded, which was a magnitude 9.5 in 1960 in Chile not too far from February’s earthquake. The second largest was a 9.2 in Alaska in 1964, and the third was the magnitude 9.1 Sumatra quake of 2004 that created the tsunami that killed more than 200,000 people. The fourth largest quake was a magnitude 9 on Russia’s Kamchatka peninsula.

Bevis’ team hopes to add 50 more GPS stations to its current 25 to better measure the movement and deformation of the crust that will continue for years.

“The Maule earthquake will arguably become one of the, if not the most important great earthquake yet studied,” said project scientist Ben Brooks of the University of Hawaii in a press release. “We now have modern, precise instruments to evaluate this event, and because the site abuts a continent, we will be able to obtain dense spatial sampling of the changes it caused.”

“As such the event represents an unprecedented opportunity for the earth science community if certain observations are made with quickly and comprehensively,” Brooks said.

Source(s): University of Hawaiʻi at Mānoa
School of Ocean and Earth Science and Technology
United States Geological Survey

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