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Earthquakes in
Jharkhand, India |
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State
- Jharkhand, India
Capital
- Ranchi
Population
-
26,909,428
(2001)
Population per
district (Top 5)
Ranchi
- pop. 2,785,064
Dhanbad
- pop. 2,397,102
Hazaribagh - pop. 2,277,475
Palamau - pop.
2,098,359
Purbi Singhbhum - pop. 1,982,988
Earthquake History
Recently
Jharkhand has not moderate to large earthquakes. Small tremors have
occurred in the region as well as along the borders with the adjoining
states of Bihar, Orissa and West Bengal. The Tatapani Fault in the the
western part of the state has been active (1)
since the Holocene period and extends across the border into the
neighbouring state of Chhattisgarh. The
Munger-Saharsa Ridge Marginal Fault (1)
runs in a north-south direction through the eastern districts of the
state before entering West Bengal. However, it must be stated that
proximity to faults does not necessarily translate into a higher
hazard as compared to areas located further away, as damage from
earthquakes depends on numerous factors such as subsurface geology as
well as adherence to the building codes.
Seismic Hazard
The seismic hazard map of India was
updated in 2000 (3) by the Bureau of
Indian Standards (BIS). With the exception of the merging of Zones I and II,
there are no major changes in the new map with regards to the BIS 1984 map.
Northern districts of Jharkhand that lie along the border with the neighbouring
state of Bihar as well as the districts in the north-eastern part of the state
lie in Zone III. The maximum intensity expected in these areas would be around
MSK VII. All of the southern districts including the cities of Ranchi and
Jamshedpur lie in Zone II. The maximum intensity expected in these areas would
be around MSK VI.
Since the earthquake database in
India is still incomplete, especially with regards to earthquakes prior to the
historical period (before 1800 A.D.), these zones offer a rough guide of the earthquake hazard in any
particular region and need to be regularly updated
(See also:
GSHAP Hazard Map for Jharkhand).
Largest Instrumented
Earthquake in
Jharkhand
05 August 1979
- Dublabera-Majhgaon area, Jharkhand, Mb 4.7 (1).
22.100 N, 84.900 E, OT=01:18:37 UTC (1)
This event is located along the state border between Jharkhand and Orissa, near
the town of Daspur in north-eastern Orissa.
Significant
Earthquakes in
Jharkhand
The following list briefly outlines known earthquakes in this region
which either had observed intensities of
V
or higher (historical
events) or had known magnitudes of
M4.5 or more
(instrumented events). General locations are provided for historical events for
which "generalized" epicentral co-ordinates are available.
Some events which were significant for other reasons are also included.
This list will be updated whenever newer information is available. Please note
that Magnitude and Intensity are NOT THE SAME. All events are within the state
or union territory covered on this page unless stated otherwise.
Acronyms Used:
D=Depth,
OT=Origin
Time, Mw=Moment
Magnitude, Ms=Surface
Wave magnitude,
Mb=Body
Wave Magnitude, ML=Local
Magnitude, M?=Magnitude
Type unknown
This listing will be modified
without notice. Please check back for the latest version
when using it elsewhere. Additionally, please
reproduce using appropriate
CITATIONS/CREDITS. |
31 July 1868 -
Daru Kharika-Hazaribagh area, Jharkhand.
24.000 N, 85.500 E (1)
Maximum observed intensity VI (4).
08 May 1963 -
Bijakuli-Banei area, Orissa, Mb 5.2 (1)
21.700 N, 84.900
E, D=033.0 kms, OT=14:15:03 UTC (1)
This area is located to the east of Sambalpur in
Orissa. A higher magnitude of 6.0 is often listed for this event (5).
05 August 1979 - Dublabera-Majhgaon
area, Jharkhand, Mb 4.7 (1).
22.100 N, 84.900 E, OT=01:18:37 UTC (1)
This event is located along the state border between Jharkhand and
Orissa, near the town of Daspur in north-eastern Orissa.
17 February 1985 - Rajauli area,
Bihar, Mb 4.7 (1).
24.670 N, 85.480 E, OT=23:06:55 UTC (1)
This event is located along the state border between Jharkhand and
Bihar, near the town of Rajauli in southern Bihar.
20 October 2003 -
Dhanbad area,
Jharkhand, Mb 4.3
23.884 N, 86.324 E, D=010.0 kms, OT=00:39:48 UTC
A
light earthquake
struck eastern parts of the Chhota Nagpur Plateau in Jharkhand,
on 20 October 2003 at 06:09 AM
local time causing minor damage to some buildings and
some panic the coal mining townships in and around Dhanbad.
The earthquake had a magnitude of
Mb=4.3.
21 March 2007 -
Latehar-Lohardaga border, Jharkhand, M 3.3
23.900 N, 84.800 E, D=039.0 kms, OT=16:34:35 UTC
A
mild earthquake struck the adjacent border
regions of the districts of Latehar and Lohardaga, Jharkhand,
on 21 March 2007 at 22:04 PM local time. It
had a magnitude of M?=3.3 and was felt in
many parts of the Chhota Nagpur Plateau causing minor damage.
26 March 2009 -
Chakradharpur-Chaibasa, Jharkhand, Mb 4.1
22.677 N, 85.734
E, D=010.0 kms,
OT=04:44:09 UTC
A
mild earthquake struck Paschimi
Singhbhum district in Jharkhand, on 26
March 2009 at 10:14 AM
local time. It had a magnitude of Mb=4.1
and was felt in many parts of the Chhota Nagpur Plateau causing
a few injuries and some panic. |
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References
01) Dasgupta, S., Pande, P., Ganguly, D., Iqbal,
Z, Sanyal, K, Venkatraman, N.V., Dasgupta, S., Sural, B., Harendranath,
L., Mazumdar, K., Sanyal, S., Roy, K., Das, L.K., Misra, P.S., Gupta,
H., "Seismotectonic Atlas of India and its Environs", Geological
Survey of India, 2000.
02) Giardini, D.,
Grünthal, G., Shedlock, K.M.,
Zhang, P., "The GSHAP Global Seismic Hazard Map", Annali di Geofisica,
Vol. 42, No.6, p. 1225 - 1230, 1999.
03) IS 1893 (Part 1): 2002 Indian Standard
Criteria for Earthquake Resistant Design of Structures Part 1 General
Provisions and Buildings (Fifth Revision).
04) Rao, B. Ramalingeswara
and Rao, P. Sitapathi, "Historical
seismicity of Peninsular India", Bulletin of
the Seismological Society of America, Vol. 74, No. 6, pp.2519-2533,
1984.
05) Tandon, A.N., and Srivastava, H.N.,
"Earthquake occurrence in India: Earthquake
Engineering (Jai Krishna Vol.)", pp. 1 - 48,
Sarita Prakashan, Meerut, 1974.
06) Pacheco, Javier F., and Sykes, Lynn R.,
"Seismic moment catalog of large shallow earthquakes, 1900 to 1989",
Bulletin of the Seismological Society of America, v. 82, no. 3, p.
1306 - 1349, 1992.
07) Wessel,
P., and Smith, W.H.F., "Free software helps map and display data", EOS
Trans., AGU, 1991, 72, 441, 445.
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