Ivanova wrote:
Aftershocks can trigger quake in Assam, US scientists caution:
[India News]: New Delhi, Jan 1 : Aftershocks of last week's killer quake off Sumatra are moving northwards and can potentially trigger a major earthquake in Assam, scientists in the United States have cautioned the Indian government.
The scientists at the Center for Earth Observing and Space Research in George Mason University in Virginia, who have been analysing the seismic data since December 26, have found the aftershocks moving towards north along 90-degree Ridge.
"If the sequence of these aftershocks moves further north then it may trigger a very big earthquake in Assam region which is expected by the scientists since long time", Ramesh P Singh, a member of the team and Vice Chairman of the International Union of Geodesy and Geophysics (IUGG) Risk Commission said.
http://www.newkerala.com/news-daily/new ... s&id=53425
" The Himalayan plate boundary differs from most destructive boundaries because it involves two continental plates. Neither is dense enough to be subducted under the other so no re-melting can take place to produce volcanic action. On the other hand, the continuing collision between India and Asia creates immense pressures that are released in earthquakes. The great Assam earthquake of 1897 caused the ground to undulate like waves on water. During the earthquake, the ground shook so violently that heavy boulders were tossed into the air.
In the past century, about half of the Himalayan region has experienced earthquakes of magnitude 8.0 or greater. Four enormous quakes each ruptured a different area along the Himalayan chain, causing tens of thousands of deaths each time. Between the earthquake locations lie 'seismic gaps', regions where there have been few recorded earthquakes so no strain release has yet taken place. The Central Seismic Gap, between areas shaken by earthquakes in 1905 and 1934, seems to have had no strain release for more than 700 years. An earthquake in this area of the size of the Great Assam earthquake could be devastating. With nine cities on the Ganges Plain with populations of more than one million, and thousands of smaller settlements, the population at risk could exceed 100 million people. "
http://www.geographyonline.co.uk/siteto ... tudy1.html
