Bharat Rakshak

Magnitude 7.5 Quake Reported in Indian Ocean
http://online.wsj.com/article/SB1000142 ... 06676.html

Hope it dont cause another tsunami.
BY ASSOCIATED PRESS
NEW YORK -- An earthquake measuring magnitude-7.5 was reported early Sunday in the Indian Ocean west of India's ...

http://earthquake.usgs.gov/earthquakes/ ... 10xkbv.php

Magnitude 7.5 - NICOBAR ISLANDS, INDIA REGION
2010 June 12 19:26:50 UTC
Versión en Español
DetailsSummaryMapsScientific & TechnicalEarthquake Details
Magnitude 7.5
Date-Time Saturday, June 12, 2010 at 19:26:50 UTC
Sunday, June 13, 2010 at 01:26:50 AM at epicenter
Time of Earthquake in other Time Zones

Location 7.748°N, 91.938°E
Depth 35 km (21.7 miles) set by location program
Region NICOBAR ISLANDS, INDIA REGION
Distances 155 km (95 miles) W of Mohean, Nicobar Islands, India
440 km (275 miles) SSW of Port Blair, Andaman Islands, India
1155 km (710 miles) SW of BANGKOK, Thailand
2775 km (1720 miles) SE of NEW DELHI, Delhi, India

Location Uncertainty horizontal +/- 6.4 km (4.0 miles); depth fixed by location program
Parameters NST=110, Nph=110, Dmin=619.7 km, Rmss=1.18 sec, Gp= 58°,
M-type=centroid moment magnitude (Mw), Version=8

Yeah, I saw this a few hours ago, so I hopped online, and there were a few bloggers from Calcutta, Bangalore and Chennai jabbering about it. I then went on Google's Twitter search, since Twitter is probably the best thing for breaking news like this, and saw people largely regurgitating the same news.
I then went out to see a movie ("The A-Team", which was okay, but not fantastic)

Looks like it was first called 7.7, then downgraded to 7.5, and a tsunami warning was immediately issued but later withdrawn. So all in all, not too much there.

If it had to cause a tsunami, it would have caused one hours ago.
The first quake (in a series of quakes that regularly occur in the A&N island chain):
MAP 7.5 2010/06/12 19:26:50 7.748 91.938 35.0 NICOBAR ISLANDS, INDIA REGION

The second significant quake was today:
MAP 4.8 2010/06/13 02:50:36 7.551 91.885 35.0 NICOBAR ISLANDS, INDIA REGION

Source:USGS

Coastal AP starting from Vizag to Chennai and beyond got tremors. Chennai seems to have bigger tremors.

Prem wrote:Magnitude 7.5 Quake Reported in Indian Ocean
http://online.wsj.com/article/SB1000142 ... 06676.html

...
The U.S. Geological Survey said the quake struck at 1:26 a.m. Sunday about 95 miles west of the Nicobar Islands at a depth of about 22 miles.

Notice the depth of the quake. This depth, apart from the frequencies of the quake, distinguishes a quake from a N-weapons test.