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Posts Tagged ‘lithosphere’

Atmosphere Above Japan Heated Rapidly Before M9 Earthquake

May 18, 2011 2 comments

Infrared emissions above the epicenter increased dramatically in the days before the devastating earthquake in Japan, say scientists.

Technology Review
Published by MIT

Geologists have long puzzled over anecdotal reports of strange atmospheric phenomena in the days before big earthquakes. But good data to back up these stories has been hard to come by.

In recent years, however, various teams have set up atmospheric monitoring stations in earthquake zones and a number of satellites are capable of sending back data about the state of the upper atmosphere and the ionosphere during an earthquake.

Last year, we looked at some fascinating data from the DEMETER spacecraft showing a significant increase in ultra-low frequency radio signals Read more…

High seismic activity will last 10 years – seismologist

March 21, 2011 Comments off

rt.com

The magnitude-9.0 earthquake in Japan was one of the major events in the natural cycle of the planet’s seismic activity, Evgeny Rogozhin, deputy director of the Institute of Physics of the Earth of the Russian Academy of Sciences told RT.

RT: You have made some controversial predictions in terms of future earthquakes. What exactly are they and what are they based on?

Evgeny Rogozhin: I think that there is no direct connection between the earthquake in Japan and earthquakes that could happen on our territory. But this latest is one of the major events in the chain of earthquakes that recently happened on the planet. You all remember the earthquake on Sumatra in 2004. It was a major earthquake – magnitude 9.5. It was huge. Major loss of life, tsunami, etc. Then there were a number of other earthquakes – in India, where people also died, in China with the magnitude 8 and finally, in Chile last year – 8.8. And now this earthquake in Japan with a magnitude unheard of before in this country – 9.

As you can see the process is taking place in different places on Earth. What does our country look like in this respect? In the last 15 years or so we’ve had about 15 major earthquakes in Read more…