Tectonics & Hazards
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Natural disasters forced 32 million people from their homes last year | Toronto Star

Natural disasters forced 32 million people from their homes last year | Toronto Star | Tectonics & Hazards | Scoop.it
Floods, storms, earthquakes and other disasters forced more than 32 million people to flee their homes in 2012 — almost twice as many as in 2011, says a new report. (And some deny climate change?

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Scientists working on earthquake forecasting systems - Press TV

Scientists working on earthquake forecasting systems - Press TV | Tectonics & Hazards | Scoop.it
Scientists working on earthquake forecasting systems
Press TV
Hundreds of earthquakes with various magnitudes have shaken the earth this year, and over three-hundred lives have been lost. Earthquakes are one of the deadliest natural disasters.
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Amphibious houses float out of trouble in Bangladesh - SciDev.Net

Amphibious houses float out of trouble in Bangladesh - SciDev.Net | Tectonics & Hazards | Scoop.it

Houses that rise on floats could provide safer homes in areas prone to floods and tsunamis, according to a Bangladesh-born US architect.

Two such 'amphibious' house designs are being tested in Bangladesh, where proximity to the Ganges delta means that flooding is a frequent problem. When flash floods last occurred, in 2010, more than 10,000 people were made homeless.

"Flooding there doesn't allow people to maintain a safe lifestyle," said Prithula Prosun,a Bangladeshi-born lead architect of the Low Income Flood-proof Technology (LIFT) house project and a graduate architecture student at the University of Waterloo, Canada. "I wanted to give something back," she said, adding that her inspiration came from similar amphibious projects in New Orleans, United States.

The LIFT designs work by preventing lateral movement but allowing the house to move up and down on stilts. When floods occur, the house simply rises above the water. Both the house and the foundations need to be light and buoyant, and two foundation materials are being tested.


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Bangladesh: Facing the Challenge

Global warming does not impact all areas equally, and in the future the less environmentally resilient countries will be at increasingly at risk.  Bangladesh, as a flat area prone to flooding, is especially vulnerable to anthropogenic climate change.  However, Bangladesh has implemented many changes in the cultural ecology to make sure that they are using the land differently to strengthen their environmental resilience.     


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Crissy Borton's curator insight, December 11, 2012 10:08 PM

When I think of innovation Bangladesh is not a place I think of. Yet they are coming up with innovative ways to deal with the global climate change. It is sad they are so effected by something they did not cause. 

Stacey Jackson's curator insight, May 8, 2013 8:29 PM

It was inspiring to see people in Bangladesh use ingenuity to adapt to climate change. Considering the nation's vulnerability to the effect of climate change, the introduction of solar panels, rain water harvesting and other techniques is essential. Maybe if other countries had the same sense of urgency, we would be making greater progress in terms of reversing climate change.

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Tonga to test tsunami warning sirens | ABC Radio Australia

Tonga to test tsunami warning sirens | ABC Radio Australia | Tectonics & Hazards | Scoop.it
Tonga is set to test five newly-installed tsunami warning sirens in Nuku'alofa and several vulnerable villages.
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Four ways to be killed by a volcano

Four ways to be killed by a volcano | Tectonics & Hazards | Scoop.it
Lava flows might look dangerous but volcanoes have much more deadly tricks up their sleeves. Find out about the real killers.
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Sichuan 2008: A disaster on an immense scale

Sichuan 2008: A disaster on an immense scale | Tectonics & Hazards | Scoop.it
Twelve May 2013 marks the fifth anniversary of the 2008 Sichuan earthquake, one of the largest earthquakes in human history in terms of socio-economic losses.
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Scientists seek foolproof signal to predict earthquakes: Could magnetic waves be the trustworthy tool?

Scientists seek foolproof signal to predict earthquakes: Could magnetic waves be the trustworthy tool? | Tectonics & Hazards | Scoop.it
For centuries people have tried to predict earthquakes-with no success. Magnetic signals from rocks deep inside the earth are the latest prospect.

 

The dream is to be able to forecast earthquakes like we now predict the weather. Even a few minutes' warning would be enough for people to move away from walls or ceilings that might collapse or for nuclear plants and other critical facilities to be shut down safely in advance of the temblor. And if accurate predictions could be made a few days in advance, any necessary evacuations could be planned, much as is done today for hurricanes.

 

Scientists first turned to seismology as a predictive tool, hoping to find patterns of foreshocks that might indicate that a fault is about to slip. But nobody has been able to reliably distinguish between the waves of energy that herald a great earthquake and harmless rumblings.

 

Seismologists just can't give a simple yes or no answer to the question of whether we're about to have a large earthquake, said Thomas Jordan, director of the University of Southern California's Southern California Earthquake Center at a meeting of the American Geophysical Union (AGU) in San Francisco in December.

 

So some scientist have turned their attention to other signals, including electricity, that might be related to activity occurring below ground as a fault prepares to slip

 

One theory is that when an earthquake looms, the rock "goes through a strange change," producing intense electrical currents, says Tom Bleier, a satellite engineer with QuakeFinder, a project funded by his parent company, Stellar Solutions, of Cambridge, Massachusetts.

 

"These currents are huge," Bleier said at the AGU meeting. "They're on the order of 100,000 amperes for a magnitude 6 earthquake and a million amperes for a magnitude 7. It's almost like lightning, underground."


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The Most Incredible Volcano Video of ALL Time

The Most Incredible Volcano Video ever shot ! Geoff Mackley, Bradley Ambrose, Nathan Berg, after an epic struggle with the weather for 35 days, we became the...
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Pangaea

Learn more: http://www.khanacademy.org/video?v=axB6uhEx628 Pangaea - the idea of Pangaea and some of the evidence behind it

Via Geography Teachers' Association of Victoria Inc. (GTAV)
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Geography Teachers' Association of Victoria Inc. (GTAV)'s curator insight, July 5, 2013 1:48 AM

CD - The causes, impacts and responses to a geomorphological hazard.

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Mountains In Motion: Stunning Short Film Time-Lapse of the Canadian Rockies - PetaPixel

Mountains In Motion: Stunning Short Film Time-Lapse of the Canadian Rockies - PetaPixel | Tectonics & Hazards | Scoop.it
Earlier today, we shared a time-lapse put together by an amateur storm chaser that captured 10 tornadoes touching down in Minnesota over the course of

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Twitter / Earth_Pics: The volcanoes of Hawaii. One ...

Twitter / Earth_Pics: The volcanoes of Hawaii. One ... | Tectonics & Hazards | Scoop.it
RT @Earth_Pics: The volcanoes of Hawaii. One of the few places on earth where you can find a scene like this. http://t.co/FD9ll7aY5s
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Top 10 Most Dangerous Active Volcanoes on Earth

Top 10 Most Dangerous Active Volcanoes on Earth | Tectonics & Hazards | Scoop.it
This editable PowerPoint slide depicts data on the 10 most dangerous volcanoes on earth (data from from Smashing Lists - November 2011). Volcanoes are classified as active, dormant or extinct depending on the frequency of their eruptions...

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PowerPoint & Keynote Solutions from Chillibreeze's curator insight, May 7, 2013 3:18 PM

Humm - Yellowstone is the most dangerous!

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Potential hazards of Icelandic volcanoes examined in television ...

Potential hazards of Icelandic volcanoes examined in television ... | Tectonics & Hazards | Scoop.it
The eruption of the Eyjafjallajökull volcano in 2010 has brought attention to the possible hazards of future volcanic eruptions in Iceland. The disruption caused by volcanic ash to the aviation industry halted flights around the ...
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Cultivating food - and resilience

UNICEF correspondent Guy Hubbard reports on a programme that is helping to alleviate the effects of regular flooding in Bangladesh. For more information, vis...
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Flooding in India and Bangladesh

Flooding in India and Bangladesh | Tectonics & Hazards | Scoop.it
Acquired August 20, 2011, and May 28, 2011, these natural-color images compare conditions along the Brahmaputra River.

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Volcanoes | Natural History Museum

Volcanoes | Natural History Museum | Tectonics & Hazards | Scoop.it
Volcanoes helped shape our planet, but how much do you know about volcanoes and the lava and gases that come with them? Find out more and build your own volcano!
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BBC Earth - Volcano videos - Icelandic volcanoes, monster volcanoes

BBC Earth - Volcano videos - Icelandic volcanoes, monster volcanoes | Tectonics & Hazards | Scoop.it
Watch interesting BBC video clips full of facts about volcanoes that are presented by experts such as Professor Iain Stewart.
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BBC Earth - Earthquake videos - The most deadly quakes and their causes

BBC Earth - Earthquake videos - The most deadly quakes and their causes | Tectonics & Hazards | Scoop.it
Watch interesting BBC video clips full of facts about earthquakes. Find out about the deadliest quake in history.
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Fisheries Another Victim of Japan Tsunami

Fisheries Another Victim of Japan Tsunami | Tectonics & Hazards | Scoop.it
Turbulence may have washed many animals away.

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Wildfires rage in Colorado as fears grow over continued drought

Wildfires rage in Colorado as fears grow over continued drought | Tectonics & Hazards | Scoop.it
Two wind-driven blazes char 800 acres and cause evacuations near Lory State Park in signal of early start to wildfire season
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Earth's core far hotter than thought - 6,000 ˚C, as hot as sun surface

Earth's core far hotter than thought - 6,000 ˚C, as hot as sun surface | Tectonics & Hazards | Scoop.it

The solid iron core is actually crystalline, surrounded by liquid.

But the temperature at which that crystal can form had been a subject of long-running debate.

 

Experiments outlined in Science used X-rays to probe tiny samples of iron at extraordinary pressures to examine how the iron crystals form and melt.

Seismic waves captured after earthquakes around the globe can give a great deal of information as to the thickness and density of layers in the Earth, but they give no indication of temperature.

 

That has to be worked out either in computer models that simulate the Earth's insides, or in the laboratory. Measurements in the early 1990s of iron's "melting curves" - from which the core's temperature can be deduced - suggested a core temperature of about 5,000˚C.

 

"It was just the beginning of these kinds of measurements so they made a first estimate... to constrain the temperature inside the Earth," said Agnes Dewaele of the French research agency CEA and a co-author of the new research. 

 

"Other people made other measurements and calculations with computers and nothing was in agreement. It was not good for our field that we didn't agree with each other."

 

The core temperature is crucial to a number of disciplines that study regions of our planet's interior that will never be accessed directly - guiding our understanding of everything from earthquakes to the Earth's magnetic field.

 


Via Dr. Stefan Gruenwald
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Biosciencia's curator insight, April 28, 2013 7:11 AM

New measurements suggest the Earth's inner core is far hotter than prior experiments suggested, putting it at 6,000C - as hot as the Sun's surface.

Florencia Araya's curator insight, October 28, 2013 8:02 AM

Image of how is the Earth Structure

Michelle Winemiller's curator insight, January 22, 2015 12:12 PM

great article since we just spoke about the fact due to the intense pressure that the core of Earth is as hot as the sun's surface--great reinforcement of material being covered

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Philippine volcano spews rocks, killing 5 climbers

Philippine volcano spews rocks, killing 5 climbers | Tectonics & Hazards | Scoop.it
One of the Philippines' most active volcanoes rumbled to life Tuesday, spewing room-sized rocks toward nearly 30 surprised climbers, killing five and injuring others that had to be fetched with...
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