|
|
|
|
|
25th Shawwal 1435 | Saturday, Aug 23, 2014
Science

Himalayas may experience major earthquakes: Study

Thursday, 6 December 2012
Comments(0)
Washington, December 06:

Scientists studying geologic features and activity in the Himalayas have warned that the mountain range, separating the plains of Indian subcontinent from the Tibetan Plateau, is primed for major earthquakes.

Stanford geophysicists said that The Himalayan range was formed, and remains currently active, due to the collision of the Indian and Asian continental plates.

Scientists have known for some time that India is subducting under Asia, and have recently begun studying the complexity of this volatile collision zone in greater detail, particularly the fault that separates the two plates, the Main Himalayan Thrust (MHT), a Stanford statement said.

Previous observations had indicated a relatively uniform fault plane that dipped a few degrees to the north.

To produce a clearer picture of the fault, Warren Caldwell, a geophysics doctoral researcher at Stanford, has analysed seismic data from 20 seismometers deployed for two years across the Himalayas by the National Geophysical Research Institute of India.

The data imaged a thrust dipping a gentle two to four degrees northward, as has been previously inferred, but also revealed a segment of the thrust that dips more steeply (15 degrees downward) for 20 kilometres.

Such a ramp has been postulated to be a nucleation point for massive earthquakes in the Himalayas.

Although Caldwell emphasised that his research focuses on imaging the fault, not on predicting earthquakes, he noted that the MHT has historically been responsible for a magnitude 8 to 9 earthquake every several hundred years.

"What we're observing doesn't bear on where we are in the earthquake cycle, but it has implications in predicting earthquake magnitude," Caldwell said.

"From our imaging, the ramp location is a bit farther north than has been previously observed, which would create a larger rupture width and a larger magnitude earthquake," he said in a statement.

Caldwell's adviser, geophysics Professor Simon Klemperer, added that recent detections of magma and water around the MHT indicate which segments of the thrust will rupture during an earthquake.

"We think that the big thrust vault will probably rupture southward to the Earth's surface, but we don't expect significant rupture north of there," Klemperer said. Researchers said the findings are important for creating risk assessments and disaster plans for the heavily populated cities in the region.

PTI

Latest News

Muhammad Gulab epitome of hard work

32-year-old Muhammad Gulab hails from Bihar. He came to Hyderabad 5 years ago. When he sets his pushcart under a tree on ...

Planting of trees helpful for good health

A grand awareness rally was taken out by Ravindra Bharati School Surya Nagar Colony, Tolichowki, on ...

2 civilians killed in heavy Pak shelling on 22 border posts, 13 villages

In a major escalation, Pakistani troops on Saturday indulged in heavy "unprovoked" shelling and firi ...

Related News

Human skin fungus tracked to deep sea animals

A ubiquitous skin fungus linked to dandruff, eczema and other itchy, flaky maladies in humans has no ...

'Semi-artificial leaf' shows faster photosynthesis than natura...

Researchers have developed a new solar cell, described as an " artificial leaf", which mimics the el ...

NASA to send rats to space to test micro-gravity

NASA is planning to send rats to the International Space Station (ISS) for a longer duration of up t ...

Post new comment

CAPTCHA
This question is for testing whether you are a human visitor and to prevent automated spam submissions.
Image CAPTCHA
Copy the characters (respecting upper/lower case) from the image.

Rs. 27490 (Per 10g)

Opinion Poll
Do you think KCR would continue celebrating all national events at Golconda Fort beginning from Independence Day?
YesNoCan't say

Matrimony | Photos | Videos | Search | Polls | Archives | Advertise | Letters

© The Siasat Daily, 2012. All rights reserved.
Jawaharlal Nehru Road, Abids, Hyderabad - 500001, AP, India
Tel: +91-40-24744180, Fax: +91-40-24603188
contact@siasat.com