Santiago (dpa) – The Chilean government declared a state of emergency in a central region Thursday after a magnitude-8.3 earthquake killed 11 people and caused widespread disruption. President Michelle Bachelet declared the state of emergency for the region around the port city of Coquimbo, near the epicentre of the quake which struck late Wednesday, daily El… Continue reading Chile declares state of emergency after quake |
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Chile earthquake shortened the days, shifted the Earth’s axis
NASA scientists have determined that the massive magnitude 8.8 earthquake that struck Chile on Saturday has shortened our days and shifted the Earth’s axis. Officials said that the effects of the event while not unusual are a testament to the power of the temblor.
Richard Gross, a research scientist at NASA’s Jet Propulsion Laboratory (JPL), said his team had determined the Chile earthquake shorted the length of an Earth day by 1.26 microseconds. A microsecond is one millionth of a second.
The 2004 earthquake in Sumatra which triggered a tsunami that killed 230,000 people was a magnitude 9.1 temblor. That event shortened the days by 6.8 microseconds according to the same computer models.
Most interesting is the effect the quakes had on the earth’s axis. Saturday’s earthquake shifted the earth’s axis by 2.7 milliarcseconds (about 8 centimeters, or 3 inches). The Sumatran quake shifted the planet’s axis by 2.32 milliarcseconds (about 7 centimeters, or 2.76 inches).
The scientists said the 2010 Chile quake had a greater effect on the Earth’s axis than the 2004 temblor because it occurred in the planet’s mid-latitudes. By contrast, the Sumatran quake was near the equator.
Researchers have said that all earthquakes affect the Earth’s axis. Dr. Benjamin Fong Chao, of NASA’s Goddard Space Flight Center, said “Any worldly event that involves the movement of mass affects the Earth’s rotation, from seasonal weather down to driving a car.”
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Widespread devastation in Chile as rescuers struggle to reach earthquake survivors
Buildings lie in heaps of rubble, highway overpasses collapsed and large crevices opened in the earth following a massive 8.8 magnitude earthquake off the coast of Chile yesterday. Aftershocks continue to rock the nation while rescuers try to reach an untold number lying buried in the remnants of towns and cities.
Yesterday’s earthquake struck the nation early in the morning hours when most residents were still sleeping. The temblor’s 8.8 magnitude rating demonstrates the power of the quake and put the event in a tie for the fifth most powerful earthquake since 1900.
Tsunami warnings were issued immediately following the quake for thousands of miles of coastline surrounding the Pacific Ocean. From California and Alaska to Hawaii and Japan, officials worried about a devastating wave that could have been generated by the quake.
While the effects of the wave were easily seen and felt in those locations far from the quake’s epicenter, damage was minimal. Thousands of evacuees have been allowed to return and all warnings have been cancelled.
- Related: Tsunami’s effects felt from California to Hawaii to Japan
- In pictures – Chile earthquake recovery efforts struggle to cope
Near the epicenter, Chile is under a ‘state of catastrophe’ and officials work to direct recovery efforts. Outgoing President Michelle Bachelet said, “It was a catastrophe of devastating consequences.”
Officially the death toll from the quake stands at 214 however officials warn that number will almost certainly grow. 500,000 homes were damaged by the quake and 1.5 million residents have been affected.
Concepcion, the largest city closest to the epicenter, saw widespread destruction and the greatest count of fatalities thus far. Buildings across the city were collapsed into ruin and rescuers were working to comb the rubble for survivors.
The nation’s capital, 200 miles from the epicenter, was not spared. Elevated highways collapsed and apartment buildings were reduced to piles of brick and mortar.
Rescuers were struggling to reach possible survivors as they run low on supplies and gasoline. Adding to the difficulty are ongoing aftershocks that threaten to bring down already weakened structures. More than 80 aftershocks of magnitude 5.0 have occurred since the main quake struck at 3:34am Saturday.
Officials with the U.S. Geological Survey said yesterday’s quake was several hundred times more powerful than the magnitude 7.0 quake that devastated Haiti last month. Chile however is in an earthquake-prone region and newer buildings have been built to withstand quakes.
The service also said that the Chile quake was centered 21.7 miles beneath the earth’s surface, considerably deeper than the 8.1 mile depth of the Haiti quake. Its magnitude 8.8 rating puts it in a tie as the fifth largest earthquake to strike the globe since 1900.
The largest earthquake on record occurred on May 22, 1960 in the same area as yesterday’s quake. That event was a magnitude 9.5 temblor that killed 1,655 people, many from a tsunami that claimed lives as far away as Hawaii and Japan.
This story was written for the Natural Disasters Examiner on Examiner.com. For all the latest with the Chile earthquake and other natural disasters, please visit the Natural Disasters Examiner.
Smoke and haze spotted by NASA satellite over Santiago, Chile
A massive 8.8 magnitude earthquake struck Chile this morning crumbling buildings, destroying bridges and causing an unknown number of deaths. The temblor struck near where the largest earthquake on history was recorded in 1960 and ties as the fifth largest since 1900.
The quake has caused tsunami warnings to be issued for most of the nations along the Pacific including Australia, Japan, Russia, Indonesia and the Philippines. In Hawaii, the tsunami arrived in recent hours and it appears the state will escape relatively unscathed.
In the aftermath, buildings in Chile’s capital of Santiago caught fire sending smoke into the sky. The temblor that shook the ground for nearly a full minute also sent a cloud of dust into the air. Click here for a slideshow of some of the first images after the quake.
NASA’s Terra satellite flew over the stricken area today and the agency released ‘before and after’ photos that clearly show the smoke and dust. For complete coverage of the earthquakes, please visit the Natural Disasters Examiner.
Haze Over Santiago Following 8.8 Earthquake
After Image
Before image
Haze lingered over the metropolitan area of Santiago, Chile, following a magnitude 8.8 earthquake on February 27, 2010. In an image from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite at 14:25 UTC, black smoke hung over the northern part of the city, while light-colored haze (perhaps pollution and/or dust) covered the southern part of the city and filled a canyon that cuts eastward into the mountains. The lower image, acquired on February 23, shows the city and surroundings under clear-sky conditions.
NASA images provided by the MODIS Rapid Response Team. Caption by Rebecca Lindsey.
Massive earthquake strikes Chile, hundreds dead; Tsunami warning for Hawaii
One of the largest earthquakes since 1900 struck off the coast of Chile early Saturday morning prompting tsunami warnings, collapsing buildings and claiming an unknown number of lives. The magnitude 8.8 temblor struck at 3:34am local time (06:34 UTC) and has been followed by more than 50 significant aftershocks.
At the current time, many eyes are focused on Hawaii. A tsunami has been generated by the quake and is expected to arrive in Hawaii at 2:05 MST.
The Natural Disasters Examiner is providing complete coverage of this breaking news event. Please follow the links below or visit the Natural Disasters Examiner’s main page for the latest news as stories are added.
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