foundation system of burj al arab

Intensities of M 6.8 Earthquake of SIKKIM, INDIA 2011 September 18

vulnerability of Structures

Overall, the population in this region resides in structures that are highly vulnerable to earthquake shaking, though some resistant structures exist. The predominant vulnerable building types are unreinforced brick masonry and rubble/field stone masonry construction.
Intensities of the Significant Cities on Modified Mercalli Intensity Scale (MMI)



MMI
City
Population
VI
Mangan
1k*
VI
Singtam
6k
VI
Namchi
1k
VI
Gangtok
31k
VI
Naya Bazar
1k
V
Rangpo
4k
V
Shiliguri
516k
IV
Thimphu
99k
III
Kathmandu
1,442k
III
Bhagalpur
362k
III
Patna
1,600k

* K= X 1000


Seismic details are:

2011 September 18 12:40:48 UTC : SIKKIM, INDIA 
Magnitude: 6.8
Date-Time : Sunday, September 18, 2011 at 12:40:48 UTC
Sunday, September 18, 2011 at 06:10:48PM at epicenter
Location : 27.730°N, 88.082°E
Depth : 20.7 km (12.9 miles)
Region : SIKKIM, INDIA
Distances: 69 km (43 miles) NW (310°) from Gangtok, Sikkim, India
120 km (74 miles) NNW (343°) from Shiliguri, West Bengal, India

 272 km (169 miles) E of KATHMANDU, Nepal
572 km (355 miles) N of Kolkata (Calcutta), West Bengal, India


Subduction Zones-Purple, Ridges-Red and Transform Faults Green
Location Uncertainty :  horizontal +/- 14.4 km (8.9 miles); depth +/- 7.4 km (4.6 miles)
Parameters : NST=258, Nph=258, Dmin=369.6 km, Rmss=1.17 sec, Gp= 29°, M-type=regional moment magnitude (Mw), Version=9

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