Plate Tectonics
16 views | +0 today
Follow
Your new post is loading...
Your new post is loading...
Scooped by Marist Geography
Scoop.it!

BBC NEWS | Science & Environment | Animated guide: Earthquakes

BBC NEWS | Science & Environment | Animated guide: Earthquakes | Plate Tectonics | Scoop.it
Guide to how earthquakes occur, in animated graphics and text
more...
No comment yet.
Scooped by Marist Geography
Scoop.it!

Mount Etna lights up Sicily skies

Mount Etna lights up Sicily skies | Plate Tectonics | Scoop.it
Eruption from Mount Etna lights up the night sky over much of eastern Sicily.
more...
No comment yet.
Scooped by Marist Geography
Scoop.it!

Why Earth's inner core has speed trap for seismic waves - NBCNews.com

Why Earth's inner core has speed trap for seismic waves - NBCNews.com | Plate Tectonics | Scoop.it
The Nation Why Earth's inner core has speed trap for seismic waves NBCNews.com The seismic vibrations should zip along about 30 percent faster than their actual speed, according to experiments and computer models re-creating the conditions inside...
more...
No comment yet.
Scooped by Marist Geography
Scoop.it!

A smartphone app for earthquakes? - U-T San Diego

A smartphone app for earthquakes? - U-T San Diego | Plate Tectonics | Scoop.it
A smartphone app for earthquakes?
U-T San Diego
Imagine a smartphone app for earthquakes that could give you as much as 25 seconds notice before destructive seismic waves reach your GPS location. In central China, that app is now a reality.
Marist Geography's insight:

The Chinese governement has introduced this new system of early warning to give people time to get into a safe place be it outside or under a table. This extra 25 seconds could save thousands of lives in future earthquakes. However much of the Chinese population live in poverty and will not be able to afford a smartphone. This means that they will not get the early warning and are more likely to be caught unaware.

more...
No comment yet.
Scooped by Marist Geography
Scoop.it!

Journey into an Icelandic volcano

Journey into an Icelandic volcano | Plate Tectonics | Scoop.it
Dr Freysteinn Sigmundsson shows the BBC's Neil Bowdler around the Thrihnukagigur volcano in Iceland.
more...
No comment yet.
Rescooped by Marist Geography from Amazing Science
Scoop.it!

NASA releases images of Pakistan's quake-created 'Earthquake Island'

NASA releases images of Pakistan's quake-created 'Earthquake Island' | Plate Tectonics | Scoop.it
Amidst the destruction caused by the devastating earthquake in Pakistan that killed more than 500 people, a new island emerged from the depth of the sea. NASA has released images of the newly formed islet.

 

NASA has released before and after photos of a new terrestrial body that was born on September 24 during a quake that struck Pakistan. 

Called Zalzala Jazeera, or a an earthquake island, the terrestrial formation can now be found 380 kilometers from the earthquake’s epicenter in Paddi Zirr Bay near Swadar, Pakistan in the Arabian Sea.  

The first image of the island was taken  by NASA’s Earth Observing-1 satellite on September 26, while the second snapshot shows the same bay on April 17 with water and no landmass around the coordinates that the new island now inhabits.

 

According to scientists, the depth of the water level around Zalzala Jazeera stands at about 15 to 20 meters, stretching 75 to 90 meters across. It lies approximately one mile from the shore. Scientists say the island is nothing more than just a pile of mud, sand and solid rock that was caused by the forces of highly pressurized gas.

 

“The island is really just a big pile of mud from the seafloor that got pushed up. This area of the world seems to see so many of these features because the geology is correct for their formation. You need a shallow, buried layer of pressurized gas—methane, carbon dioxide, or something else—and fluids. When that layer becomes disturbed by seismic waves (like an earthquake), the gases and fluids become buoyant and rush to the surface, bringing the rock and mud with them,” Bill Barnhart, a geologist at the US Geological Survey told NASA’s Earth Observatory. 

 

The Earth Observatory says this is not the first island to have surfaced along the 700-kilometer-long coast over the past century.  Scientists predict that the new island will remain above surface for up to a year before sinking back into the Arabian sea.

 

The island rose out of the water during a 7.7-magnitude earthquake that struck Balochistan, just 69 km north-northeast of Awaran -  the nearest Pakistani city - on 24 September 2013. Over 300,000 people were affected by the quake, which caused over 500 deaths, and some 21,000 houses were destroyed.


Via Dr. Stefan Gruenwald
more...
No comment yet.
Scooped by Marist Geography
Scoop.it!

Monaco shivers in seismic quake - The Riviera Times Online

Monaco shivers in seismic quake - The Riviera Times Online | Plate Tectonics | Scoop.it
Tremors rippled through the Principality at lunchtime on Monday as the French Navy discharged a WWII bomb in the waters off the Mediterranean coast. Ranking at an estimated 2.7 …
Marist Geography's insight:

Not caused by plate movement but the exploding of a WW2 bomb. producing a small earthquake even though it was detonated 1km offshore

more...
No comment yet.
Scooped by Marist Geography
Scoop.it!

4.4-Magnitute Quake Hits Northern Greece - Naharnet

4.4-Magnitute Quake Hits Northern Greece - Naharnet | Plate Tectonics | Scoop.it
Naharnet
4.4-Magnitute Quake Hits Northern Greece
Naharnet
Halkidiki, a popular tourist destination, is located east of Thessaloniki, Greece's second-largest city.
more...
No comment yet.