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Q.

What is Solar Tsunami ?

Tags: science, environment, news & events
Asked by joyesh chakraborty, 03 Aug '10 01:52 pm
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Answers (4)

 
1.

A Moreton wave is the chromospheric signature of a large-scale solar coronal shock wave. Described as a kind of solar 'tsunami',] they are generated by solar flares. They are named for American astronomer Gail Moreton, an observer at the Lockheed Solar Observatory in Burbank who spotted them in 1959

Moreton waves propagate at a speed of 500-1500 km/s, and occur where a coronal magnetohydrodynamic fast-mode weak shock wave intersects the chromosphere according to a well-known theory of Yutaka Uchida that links them to radio type II bursts. Moreton waves can be observed primarily in the H band
Answered by PARTHA PATHAK, 03 Aug '10 02:09 pm

 
  
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2.

A Moreton wave is the chromospheric signature of a large-scale solar coronal shock wave.
Answered by Manjunath, 14 Aug '10 04:34 pm

 
  
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A Moreton wave is the chromospheric signature of a large-scale solar coronal shock wave. Described as a kind of solar "tsunamis", they are generated by solar flares. .(source Web definition)
Answered by jameel ahmed, 04 Aug '10 07:28 pm

 
  
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4.

Solar tsunami is a radiation storm, a coronal mass ejection from an active region on the sun's surface. Its a towering wave of hot plasma racing across the sun's surface.
The technical name is "fast-mode magnetohydrodynamical wave," or "MHD wave" for short. It could be up about 100,000 kilometers high, racing outward at 250 km/second (560,000 mph), and packed with energy as much as 2.4 million megatons of TNT (1029 ergs).
Solar tsunamis were discovered in 1997 by the Solar and Heliospheric Observatory (SOHO). In May 1997, a CME (a coronal mass ejection) came blasting up from an active region on the sun's surface, and SOHO recorded a tsunami rippling away from the blast site. When solar physicists first witnessed a towering wave of hot plasma racing across the sun's surface, they doubted their senses. The scale of the wave was staggering. It rose up higher than Earth itself and rippled out from a central point in a circular pattern millions of kilometers in circumference.The blast hur ...more
Answered by avinash v. chavan, 09 Jun '11 12:33 pm

 
  
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