Earthquake
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Earthquake Hits near Japan's Damaged Fukushima Nuclear Site - Wunderground.com (blog)

Earthquake Hits near Japan's Damaged Fukushima Nuclear Site - Wunderground.com (blog) | Earthquake | Scoop.it
New York Daily News Earthquake Hits near Japan's Damaged Fukushima Nuclear Site Wunderground.com (blog) An earthquake official with the Japan Meteorological Agency said the quake was an aftershock of the magnitude 9.0 earthquake and tsunami that...

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Scenes From the 1755 Earthquake That Turned Lisbon to Ruins

Scenes From the 1755 Earthquake That Turned Lisbon to Ruins | Earthquake | Scoop.it
Today is the anniversary of an earthquake that shook Lisbon to its core.
In 1755, a devastating quake killed tens of thousands of people and caused 15-foot fissures through the center of the city.

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California Earthquake Warning System Bill Signed, But Will It Be Ready Before Next Big Quake?

California Earthquake Warning System Bill Signed, But Will It Be Ready Before Next Big Quake? | Earthquake | Scoop.it

"Gov. Jerry Brown on Tuesday ordered creation of a statewide earthquake early warning system that could give millions of Californians a few precious seconds of warning before a powerful temblor strikes."

 

[via Huffington Post]


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Earthquakes, tsunamis and volcanoes › Ask an Expert | ABC Science

Earthquakes, tsunamis and volcanoes › Ask an Expert | ABC Science | Earthquake | Scoop.it

Causes of quakes

Is it possible for anything living to cause an earthquake?
— Megan


Yes, people can cause an earthquake through human activity. The most common way is by building a dam. It's very common to get small earthquakes after filling a dam, firstly because of the extra load due to the weight of the water; and then secondly because water seeping down into faults can cause them to move if they're at breaking point. Liquid acts as a lubricant enabling faults to slide more easily.

 

Another way humans can cause earthquakes is with mining - taking material out of the ground also causes little stresses which can results in earthquakes.

 

Pumping oil out can cause earthquakes by changing the stresses underground or because water pumped down to flush the oil out can have a lubricating effect.

 

Another human-related cause of earthquakes is when water is pumped through hot rocks several kilometres underground in order to harness geothermal energy. This can cause little tremors, up to magnitude 3 on the Richter Scale. Scientists use these small earthquakes to trace what is happening underground - they can follow exactly where the water is by following the little earthquakes.

 

— Clive Colins, seismologist, Geoscience Australia


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Haiti earthquake

Haiti earthquake | Earthquake | Scoop.it
A powerful earthquake rocked Haiti on January 12, damaging not only buildings and roads but the foundation of the Western Hemisphere's poorest nation, which has struggled under decades of coups, corruption and natural disasters ...

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5.5 magnitude earthquake shakes Tokyo, halts trains

5.5 magnitude earthquake shakes Tokyo, halts trains | Earthquake | Scoop.it
A 5.5 magnitude earthquake hit eastern Japan on Saturday. Tremors were felt from inside Tokyo skyscrapers, and the city’s high-speed train service was halted as a precaution.
The earthquake struck at 8:44 p.m.

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Stunning Map Reveals World's Earthquakes Since 1898

Stunning Map Reveals World's Earthquakes Since 1898 | Earthquake | Scoop.it

If you've ever wondered where — and why — earthquakes happen the most, look no further than a new map, which plots more than a century's worth of nearly every recorded earthquake strong enough to at least rattle the bookshelves.

 

The map shows earthquakes of magnitude 4.0 or greater since 1898; each is marked in a lightning-bug hue that glows brighter with increasing magnitude.

 

The overall effect is both beautiful and arresting, revealing the silhouettes of Earth's tectonic boundaries in stark, luminous swarms of color. 

 

The map's maker, John Nelson, the user experience and mapping manager for IDV Solutions, a data visualization company, said the project offered several surprises.

 

"First, I was surprised by the sheer amount of earthquakes that have been recorded," Nelson told OurAmazingPlanet. "It's almost like you could walk from Seattle to Wellington [New Zealand] if these things were floating in the ocean, and I wouldn't have expected that."

 

In all, 203,186 earthquakes are marked on the map, which is current through 2003. And it reveals the story of plate tectonics itself.

 

The long volcanic seams where Earth's crust is born appear as faint, snaking lines cutting through the world's oceans. The earthquakes along these so-called spreading centers tend to be rather mild. The best studied spreading center, called the Mid-Atlantic Ridge, bisects the Atlantic Ocean, on the right side of the image.

 

Its Pacific counterpart wanders along the eastern edge of the Pacific Ocean, cutting a wide swath offshore of South America. Another spreading center makes a jog though the Indian Ocean and up through the Red Sea.

But one glance at the map shows that the real earthquake action is elsewhere. Subduction zones, the places where tectonic plates overlap and one is forced to dive deep beneath the other and into the Earth's crushing interior — a process that generates the biggest earthquakes on the planet — stand out like a Vegas light show.

 

Nelson said this concept hit home particularly for the Ring of Fire, the vast line of subduction zones around the northern and western edge of the Pacific Ocean.

 

"I have a general sense of where it is, and a notion of plate tectonics, but when I first pulled the data in and started painting it in geographically, it was magnificent," Nelson said. "I was awestruck at how rigid those bands of earthquake activity really are."


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Ari Meier's curator insight, September 9, 2013 3:34 PM

This is amazing.

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Earthquake Study Points to Possible Carbon Injection Risks

Earthquake Study Points to Possible Carbon Injection Risks | Earthquake | Scoop.it
The oil industry triggered a series of small earthquakes in Texas by injecting carbon dioxide underground to boost well production, a new study says.
    

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Fukushima, Eastern Japan Shaken Anew by 5.5 Magnitude Earthquake, No ... - International Business Times AU

Fukushima, Eastern Japan Shaken Anew by 5.5 Magnitude Earthquake, No ... - International Business Times AU | Earthquake | Scoop.it
Fukushima, Eastern Japan Shaken Anew by 5.5 Magnitude Earthquake, No ...
International Business Times AU
Eastern Japan, where the crippled Fukushima nuclear power plant is located, has been shaken anew by a 5.5 magnitude earthquake on Sunday morning.

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Fukushima nuclear power plant undamaged after 7.3 earthquake off coast of ... - The Independent

Fukushima nuclear power plant undamaged after 7.3 earthquake off coast of ... - The Independent | Earthquake | Scoop.it
The Independent
Fukushima nuclear power plant undamaged after 7.3 earthquake off coast of ...

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LESSONS FROM JAPAN'S QUAKE-TSUNAMI DISASTER - U-T San Diego

LESSONS FROM JAPAN'S QUAKE-TSUNAMI DISASTER - U-T San Diego | Earthquake | Scoop.it
LESSONS FROM JAPAN'S QUAKE-TSUNAMI DISASTERU-T San DiegoA quiet revolution is taking place in small fishing villages along the Pacific coast of Japan where last year's 9.0 earthquake and devastating tsunami hit hardest.

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Earthquake isn’t enough to kill the duckie dead [video]

Earthquake isn’t enough to kill the duckie dead [video] | Earthquake | Scoop.it
If Mother Nature thought she could destroy the joy that is Florentijn Hofman’s enormous rubber duckie, she was dead wrong. Taiwan will have its day with the duckie come earthquake, power outages and an embarrassing leakage situations.

Via Thomas Faltin
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something funny

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Japan Earthquake: Helicopter aerial view video of giant tsunami waves

COMING SOON: HANGOUT WITH ANTI-NUCLEAR ADVOCATE DR HELEN CALDICOTT. JOIN NOW & ASK YOUR QUESTIONS http://bit.ly/CaldicottHangout A ferocious tsunami spawned ...

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6.6 earthquake offshore Chile, no tsunami for Hawaii | Big Island ...

6.6 earthquake offshore Chile, no tsunami for Hawaii | Big Island ... | Earthquake | Scoop.it
HONOLULU, Hawaii – A 6.6 magnitude earthquake has struck near the coast of central Chile, but no tsunami is expected according to the Pacific Tsunami Warning Center. “Based on all available data,” the PTWC wrote in an ...
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3.0 and 3.5 Magnitude Earthquakes registered on Hawaii Island.

Two small earthquakes shake Hawaii Island.

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