Why earthquakes in Nepal?
The movement of the Indian plate, which collided with the Eurasian plate and gave birth to the Himalayas, makes the region a seismic hot zone. On average, the Indian plate moves about 18 millimeters towards the Eurasian plate and slips underneath it. This movement loads up some of its energy into earthquake faults, which extend on a line from east to west, and the process is much like loading energy in a spring. And every so often that energy is released in snap, resulting in an earthquake.
Roger Bilham, geologist with the University of Colorado Boulder who studies the seismicity of the Himalayan area as saying, "At a magnitude of 7.9 on the Richter scale, the April 25 earthquake has caused devastation but it is not the anticipated "great Himalayan earthquake”. This does not qualify as a great earthquake which needs to be of magnitude 8".
If you look back 70 million years, all of India as we know it today was an island,” said K Muthumani, chief scientist at the Advanced Seismic Testing and Research Laboratory in Chennai. “It drifted into the Eurasian plate and pushed against it.”
THE WORST IS YET TO COME NOBODY KNOWS WHEN. SCIENTISTS EXPECT EARTHQUAKE OF MAGNITUDE OF 9 IN RICHTER SCALE. AND THEN WE KNOW WHAT HAPPENS.