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Earthquake

Moderators: Prasanna, govardhanvt, raghvendra khare

Re: Earthquake

Postby govardhanvt » Fri Jul 03, 2015 12:18 pm

BREAKING: Deadly Earthquake Rocks Western China; Major Quake Hits the Philippines



By Mark Leberfinger, AccuWeather.com Staff Writer

July 3, 2015; 6:22 AM ET

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A magnitude-6.5 earthquake rocked southern Xinjiang province, China, on Friday morning, local time.

Six people died as a result of the quake, according to The Associated Press. Thousands of buildings were damaged or destroyed.

It was the first of two major earthquakes in the Asia-Pacific region on Friday.

The temblor occurred at 9:07 a.m. local time (9:07 p.m. EDT Thursday). The quake had a depth of 10 km (6.2 miles), the China Earthquake Networks Center (CENC) reported.

The quake also disrupted communications in the region, Xinhua, China's official news agency, reported.

Weather conditions should be dry through the weekend in the region, aiding relief and rescue efforts, AccuWeather Meteorologist Adam Douty said.

"If there will be any rain over the next several days, it will be on Monday as a cold front moves through," Douty said. "However, most of the rain will stay in the mountains just to the south. Temperatures through the weekend in the upper 80s to near 90. It will be a little cooler early next week as the front comes through."
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Re: Earthquake

Postby govardhanvt » Mon Aug 10, 2015 10:45 am

There is great possibility of earthquake over 6 in Richter Scale to be felt in china, Himalayan region of India and pakisthan, iran Iraq, parts of Indonesia, north eastern parts of India to night. Chile, Taiwan, parts of Japan are also vulnerable to such earthquake . There is good possibility of fairly large number of loss of human life and concrete structures getting rattled due to such earthquake
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Re: Earthquake

Postby govardhanvt » Thu Aug 20, 2015 1:36 pm

Greater tsunami risk from Southern California quake, study finds


By Rong-Gong Lin II contact the reporter
This article is related to: Scientific Research,
Tsunamis,
Earthquakes,
UC Riverside



August 19, 2015, 6:41 AM





An earthquake along the California coast could pose a greater tsunami threat to the Ventura area than previously understood, according to a new study published Tuesday by UC Riverside and U.S. Geological Survey scientists.

Published in the journal Geophysical Research Letters, a publication of the American Geophysical Union, the study found that tsunami floodwaters could reach points in the Ventura vicinity beyond the area currently marked in California’s official tsunami inundation map. Tsunami wave heights could approach as high as 20 feet in the Ventura Harbor and Channel Islands Beach area near Oxnard.

A California Geological Survey official said the agency will study the report. The agency is in the midst of creating a second edition of tsunami inundation maps after publishing the first version about six years ago.



The latest study comes amid new focus on the earthquake faults that stretch deep under the earth in the Santa Barbara and Ventura areas. Previously, some seismic experts thought that faults in this area posed only a moderate threat. But research in recent years suggests that they are connected in a way that could cause a magnitude-7.7 to 8.1 earthquake.


The latest study focuses on a hypothetical scenario in which a magnitude-7.7 earthquake begins nine miles under the Earth’s surface, under the mountains northeast of Santa Barbara.

The earthquake starts on a deep fault – the Lower Red Mountain fault – then moves to the shallower Pitas Point fault under the Pacific Ocean. The earthquake thrusts up the earth north of the fault, lifting up the seafloor permanently and creating a tsunami.

Tsunami waves then spread northward and southward. Santa Barbara itself is largely protected from tsunami by coastal bluffs, but parts of the Ventura and Oxnard areas are particularly at risk -- especially in neighborhoods around the ports at sea level.

“Ventura and Oxnard have lower-lying topography. That region is flatter than other regions around it,” said Kenny Ryan, the lead author of the study and a geophysics graduate student at UC Riverside. “It’s kind of a bad place to have a tsunami propagate into, because a tsunami can propagate into lower-lying lands easier than they can steeper ones.”

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The authors of the study emphasized the report’s limitations. It's only one model of where the tsunami floodwaters would actually go, and there’s no guarantee of destruction if you’re on the wrong side of the line, and no guarantee of safety if you’re on the inland side of the line.

“The real idea from this paper is to start a discussion on doing a more comprehensive analysis of this region,” Ryan said.

Studying how far tsunami waves could travel inland in California is a fairly new subject in the state. It was only about six years ago that the state published maps of areas that could be flooded by tsunami.

Tim McCrink, supervising engineering geologist with the California Geological Survey, said his agency will be studying this paper to see how it might fit in with statewide revisions to the tsunami flood zone maps.

“We haven’t had a chance to look at it to evaluate its probability to tell people intelligently what it means to them,” McCrink said. “It takes a little while to digest it and incorporate it into the policy framework.”


Tsunami threat to Ventura



Map of tsunami heights in meters resulting from an earthquake on the Pitas Point and Lower Red Mountain fault system near Ventura. The solid black line indicates the coastline. The solid red line is the statewide tsunami inundation map coordinated by the California Emergency Management Agency. Key: SB = Santa Barbara; VH = Ventura Harbor; SCRM = Santa Clara River Mouth; MSB = McGrath State Beach; CIHE = Channel Islands Harbor Entrance. Note that inundation from the model is significantly greater in many places than the statewide estimate. (Source: Kenny Ryan, UC Riverside)

The study includes a map showing areas outside of the state’s tsunami zone that could be at risk of tsunami floodwaters. Some of the new area now labeled at risk appears to be sparsely populated farmland. Other areas are close to the state’s existing tsunami line.

Such a magnitude-7.7 earthquake in the Santa Barbara-Ventura County area would be a rare, devastating temblor for California. There have only been a handful such earthquakes that big to strike since California became a state: the magnitude-7.9 earthquake on the southern San Andreas fault in 1857, a 7.8 temblor in the Imperial Valley in 1892, and the great San Francisco earthquake of 1906, also a 7.8.

Given how the devastating magnitude-9.0 earthquake and tsunami was to Japan in 2011 – and how surprising it was to scientists – it is important to consider how to prepare for rare but possible earthquakes, said study coauthor David Oglesby, geophysics professor at UC Riverside.

“I think it’s worth investigating,” he said. “Certainly, you can’t rule this event out … We wouldn’t simulate it if it wasn’t plausible.”

The most surprising thing about the study, Oglesby said, was how the tsunami wave initially moved south from the fault and then turned sharply east toward Ventura.

The main reason for that is that the western part of the tsunami strikes deeper water first, and begins moving faster than the tsunami’s eastern flank.

Like a rowboat where an oar on one side starts moving faster, the entire tsunami alters course, and heads straight toward Ventura.

The study was coauthored by Eric Geist, a U.S. Geological Survey tsunami modeler, and Michael Barall, an expert in the development of fault modeling software, in addition to Ryan and Oglesby. The report was funded by the Southern California Earthquake Center, which receives money from the U.S. Geological Survey and the National Science Foundation.
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Re: Earthquake

Postby govardhanvt » Thu Oct 08, 2015 4:50 pm

I expect a severe earthquake of over 7.5 magnitude in next two days. China, North eastern state of India, Indonesia, Iraq, Iran are vulnerable. Tokyo, Philliphines, Taiwan, chile and Thailand, cannot be ruled out of such rattling of earth
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Re: Earthquake

Postby govardhanvt » Sat Oct 10, 2015 1:29 am

An earthquake measuring 3.0 on the Richter Scale jolted New Delhi and the National Capital Region at 01.42 a.m local time on Saturday. The Indian Meteorological Department website said the intensity was slight and the epicenter was Delhi-NCR region. According to police, there are no reports of any damage so far.

DElhi-NCR"Just checked from Emergency operation centre of Delhi as well as Police control room.. No damage has been reported so far #Earthquake," Deputy Commissioner of Police North Delhi Madhur Verma tweeted.
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Re: Earthquake

Postby govardhanvt » Fri Oct 23, 2015 12:31 pm

NASA's has a warning for California: Get ready for an earthquake.

A new study from the space agency's Jet Propulsion Laboratory in California said there was a 99.9 percent chance that Los Angeles will experience an earthquake of at least 5.0 magnitude in the next 2 ½ years.

The study was published in the journal Earth and Space Science.

The determinations were made by using GPS and airborne radar to measure stress in tectonic fault lines following the 2014 La Habra earthquake that had a magnitude of 5.1.

"If you think of pulling on a rubber band, you stretch it and stretch it, and if you pull on it hard enough, it's going to break," NASA geophysicist Andrea Donnellan told The Huffington Post, comparing the rubber band to the earth's crust. "The earthquakes are the breaking rubber band. So what we did in this study is we showed what stored potential was still in the northeast LA basin and northern Orange County."

A 5.0 earthquake is considered moderate but an event of that size in Los Angeles could result in millions of dollars of damage. The LaHabra earthquake caused an estimated $12 million in damages; a 2013 quake near Napa, California in 2015 killed one person and caused an estimated $300 million in damages. That earthquake measured 6.1.

Not all scientists are in agreement with the NASA study, however. Seismologists at the U.S. Geological Survey questioned the methodology involved in the prediction. USGS' own studies put the probability of an earthquake in the same region at 85 percent within the next three years.

"The earthquake rate implied by the 99.9 percent probability is significantly higher than observed at any time previously in Southern California, and the lack of details on the method of analysis makes a critical assessment of this approach very difficult. Therefore, the USGS does not consider the analysis presented in this paper a reason to change our assessment of the hazard," the group said in a statement
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Re: Earthquake

Postby govardhanvt » Mon Oct 26, 2015 4:54 pm

Earthquake of 7.7 magnitude strikes Hindukush region and whole of Nothern India and parts of pakisthan rattled. 55 reported dead and damages to property is also noticed
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Re: Earthquake

Postby govardhanvt » Wed Mar 02, 2016 10:08 pm

A fear mongering article attempted to link an alleged "carbon monoxide spike" with an earthquake prediction
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Re: Earthquake

Postby govardhanvt » Wed Mar 02, 2016 10:09 pm

Indonesia earthquake off Sumatra measures 7.8 BBC
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Re: Earthquake

Postby govardhanvt » Mon Apr 25, 2016 9:10 am

A megathrust is brewing in India, say experts

subduction process similar to the one that caused the Ecuadorean quake is happening under the Himalayan region as well, where the Indian plate is getting inside the Chinese landmass. This northward push has been creating a huge amount of tectonic strain in the region, making it particularly prone to earthquakes.

Scientists believe there is so much energy stored in the area that an earthquake of magnitude greater than 8, possibly even 9, would be needed to release it. This earthquake can come at any time.

The Nepal earthquake was a result of this same process, but it was relatively weak in magnitude.

Interestingly, historical data from the US Geological Survey shows that on an average only one earthquake of magnitude 8 or above, called as ‘great earthquakes’, takes place in a year anywhere in the world. This year there hasn't been a 8-plus quake so far.

RECOMMENDED: One year later, rebuilding lags in quake-hit Nepal - aid groups

There have been aberrations. The year 2007, for example, witnessed as many as four 8-plus earthquakes – in Kuril Islands in north Pacific, Soloman Islands near Australia, central Peru, and in Sumatra in Indonesia. The years 1920, 1923, 1946, 1960 and 1995 each had three of these big events.

On the other hand, in recent memory, 2002, 2008 and 2013, did not have any 8-plus earthquake. Still, the period after 2000 has been one of the most frequent for ‘great earthquakes’. As many as 20 of these events have happened in these 15 years.

The frequency of earthquakes every year increases exponentially as we look at smaller magnitudes. Earthquakes of magnitude between 7 and 7.9 happen 15 times on an average every year, while 134 instances of earthquakes between 6 and 6.9 are recorded every year

http://www.msn.com/en-in/news/newsindia ... &ocid=iehp
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