The earthquake, measuring 
6.8 on the Richter Scale, that rocked the North-Eastern states on Sunday
 was the biggest in the region in 20 years, according to  officials.
 
										
									
									
									
Records of the Central Seismological Observatory here showed 
increasing seismic activity in the region.  A total 34 quakes of light 
and moderate intensity were felt in the region in 2009. The area 
witnessed 26 earthquakes each in 2008 and 2007, while it was 23 in 2006,
 the data showed.
On February 4 this year, a quake of 6.4 
magnitude with its epicentre in the Indo-Myanmar border in Manipur shook
 the region. An earthquake of similar intensity (6.8) had rocked the 
northeast on August 6, 1988.           
Sep 19, 2011
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