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SEISMICITY OF
PAKISTAN |
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Earthquake History |
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Largest Earthquake |
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Seismic Hazard |
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Significant Earthquakes |
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CAPITAL
- Islamabad |
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POPULATION
(Pakmitti.com) |
130,580,000
(1998 Census)
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MAJOR URBAN
CENTRES |
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Karachi |
pop.
9,269,265 |
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Lahore |
pop.
5,129,214 |
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Faisalabad |
pop.
2,280,360 |
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Hyderabad |
pop.
1,447,957 |
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Rawalpindi |
pop.
1,406,214 |
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Islamabad |
pop. 799,000 |
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EARTHQUAKE HISTORY
Earthquake activity in Pakistan is mainly concentrated
in the north and western sections of the country, along
the boundary of the Indian plate and the Iranian and
Afghan micro-plates. The Chaman Fault runs along Pakistan's
western frontier with Afghanistan from Kalat, in the
northern Makran range, past Quetta and then on to Kabul,
Afghanistan. A fault also runs along the Makran coast
and is believed to be of the same nature as the West
Coast fault along the coast of Maharashtra, India. An
active subduction zone exists off the Makran coast.
The great 1945 earthquake was centred in this region.
This zone forms the boundary between the Arabian and
the Iranian micro-plate, where the former subducts or
dives beneath the latter. Thrust zones run along the
Kirthar, Sulaiman and Salt ranges. There are four faults
in and around Karachi and other parts of deltaic Indus,
and Makran coast. The first
is the Allah Bund fault that passes through Shahbundar,
Jah, Pakistan Steel Mills, and runs through eastern
parts of the city and ends near Cape Monz. This fault,
in fact, has caused extensive damage in the past many
centuries in the deltaic areas. The destruction of Bhanbhor
in the 13th century and damage to Shahbundar in 1896
were caused by this fault. The other one emanates from
the Rann of Kutchh. The third
one is the Pubb fault which ends into Arabian sea near
Makran coast and the last
one is located in the lower Dadu district near Surajani
and falls in the vicinity of Karachi. Tsunamis or tidal
waves have also affected the coast of Pakistan. The
worst case was in 1945 when an earthquake of magnitude
7.9 struck the Makran coast,
waves as high as 12 meters were reported.
LARGEST
EARTHQUAKE IN PAKISTAN
30 May 1935
- Quetta (Balochistan), Pakistan, Mw 8.1
19:00:46.9 UTC, 27.39N, 88.75E, 17 kms depth
Close to 30,000 people were killed and the city of Quetta
was devastated. The main shock was most intense in a
small region surrounding the epicentre, its intensity
dying off rapidly as one moved away from it.
HAZARD ZONATION
According
to a map created by the Pakistan Met. Department, the
country is divided into 4 zones based on expected ground
acceleration. The areas surrounding Quetta, along the
Makran coast and parts of the NWFP, along the Afghan
border fall in Zone 4. The rest of the NWFP lies in
Zone 3, with the exception of southern parts of this
province which lie in Zone 2. The remaining parts of
the Pakistani coast till Karachi also lie in Zone 3.
The remaining parts of the country lie in Zone 2. The
major cities of Peshawar, Rawalpindi and Islamabad both
sit in this zone. But despite this, they are regularly
rattled by strong earthquakes from the north or from
neighbouring Afghanistan. The upper westernmost part
of Balochistan and regions
along the border with India lie in Zone 1. This zone
also includes Lahore where there was serious damage
caused by the 1905 Kangra earthquake in neighbouring
India.
According to the GSHAP, the most vulnerable parts of
Pakistan are parts of Balochstan
province in and around Quetta stretching to the Afghan
border and western parts of Balochistan,
which include the Makran coast till the Iranian border.
These regions could expect to have a maximum peak ground
acceleration (PGA) ranging between 0.24g to 0.4g. Parts
of northern Punjab could expect a maximum PGA ranging
between 0.24g to 0.32g. Similar values of PGA could
be expected in northern sections of the North-West Frontier
Province (N.W.F.P.) and around Karachi, in Sindh Province.
Maximum PGA values for the rest of the country do not
fall below 0.8g. These values steadily decrease towards
the Indian border. The region with the lowest maximum
PGA is a region between Khangarh and Fort Abbas, along
the international border with India.
LARGE
EARTHQUAKES IN PAKISTAN
893
- 894 A.D.
- Debal (Lower Sindh), Pakistan,
Mw 7.5
(TS)
Nearly 1,50,000 people were killed
and several towns were destroyed in the region.
Details
2 May 1668
- Near Shahbunder (Lower Sindh), Pakistan, M 7.6 (TS)
24.00 N, 68.00 E
May 1688
- Near Shahbunder (Lower Sindh), Pakistan
24.00 N, 68.00 E
16
June 1819 -
Allahbund,
Indo-Pak Border region, Mw 7.5 (Bilham, '99)
23.60
N, 69.60 E
About 3200 people were killed and
dozens of towns and villages were destroyed in Kutchh
and adjoining parts of southern Pakistan. The earthquake
resulted in great surface deformation including a 90-kilometres
stretch of land uplifted about 4 metres, called the
Allahbund. The shock was felt throughout the Sub-continent
as far as Kolkata.
Details
26 September 1827
- Near Lahore (The Punjab), Pakistan
31.60 N, 74.30 E (31.00 N, 75.30 E)
At least 1000 people killed in Lahore and the neighbouring
parts of Punjab province. Some discrepancies in the
exact location of the epicentre. Very few earthquake
catalogs list this event.
24 January 1852
- Near Kahan (Baluchistan), Pakistan
29.30 N, 68.80 E
250 - 350 people killed in the Kahan area, in the Muree
Hills. Hundreds of heads of cattle also perished and
buildings in the fort area were either badly damaged
or destroyed.
1865
- Near Kahan (Baluchistan), Pakistan
Several buildings destroyed.
1883
- Jhalawan (Pakistan)
1889
- Jhalawan (Pakistan)
20
December 1892
- Near Chaman, Afghanistan-Pakistan border,
Mw 6.8
This earthquake was triggered by a fault that caused
surface displacement for nearly 200 kilometres off setting
railway lines and other man-made objects. It was felt
throughout Baluchistan (Pakistan) and was centred in
the Khojak range.
20 October 1909
- Between Loralai and Sibi (Baluchistan), Pakistan,
Mw 7.0
30.00 N, 68.00 E, 60 kms depth
Centred in the vicinity of Bagh and Shahpur. Maximum
RF intensity of 9 was observed. Several villages completely
destroyed and more than 100 killed.
1 February 1929
- Between Buner and Hazara (North West Frontier Province),
Pakistan
17:14:?? UTC, 36.50 N, 70.50 E, 180-220 kms depth
Occurred just north of Abbotabad at around 10:45 pm
local time. Reached a maximum RF intensity of 8.
25 August 1931
- Sharigh (Baluchistan), Pakistan, M 7.2 (PMD)
30.00 N, 67.00
E
This earthquake reached a maximum RF intensity of 8.
It had a very shallow focal depth and destroyed most
of the mud houses in the region.
Details
27
August 1931
- Mach (Baluchistan), Pakistan, Mw 7.0 (SSA)
29.80 N, 37.30
E
This was the second earthquake within a span of two
days to hit the same region. It was much stronger than
the earthquake on August 25th, but did not reach a maximum
RF value of more than 8. It was felt in much of Baluchistan
and Sindh. Several people were killed by falling masonry
in Quetta.
Details
30
May 1935 -
Quetta (Balochistan), Pakistan, Mw 8.1
19:00:46.9 UTC, 27.39N, 88.75E, 17 kms depth
Close to 30,000 people were killed and the city of Quetta
was devastated. The main shock was most intense in a
small region surrounding the epicentre, its intensity
dying off rapidly as one moved away from it.
Details
21 November 1939
- Badakhshan Province, Afghanistan, Ms 6.9 (NOAA)
11:02:?? UTC, 36.30 N, 70.50 E, 220 kms depth
Felt throughout north-eastern Afghanistan and much of
northern Pakistan and northern India. In the epicentral
area the MM intensity reached VIII while in place such
as Gilgit, Drosh and Srinagar, it was an intensity VII.
It was felt in the North-West Frontier Province (N.W.F.P.),
Pakistan. It was also felt in Jammu & Kashmir and
northern parts of the Punjab, India.
27
November 1945
- Off the Makran coast (Baluchistan),
Pakistan, Mw 7.9
21:56:?? UTC, 24.50 N, 63.00 E, 25 kms depth
At least 2000 people killed
in southern Pakistan and neighbouring Iran. Tsunamis
with heights of 12 meters struck the Makran coast. Widespread
damage. Damage also occurred at Ormara. Tsunamis were
recorded at Kutchh (India) and Mumbai, India, with wave
heights of 6 meters and 2 meters respectively.
Details
5 August 1947
- Off the Makran coast (Baluchistan), Pakistan, Mw 7.2
14:24:?? UTC, 25.10 N, 63.40 E
28 December 1974
- NE of Malakhand, NWFP, (Indo-Pakistan Border region),
6.2Ms (NEIC)
12:11:43.70 UTC, 35.054N, 72.870E, 22kms depth
Reports on this earthquake are very sketchy and apart
from the 5000 fatalities caused by this quake nothing
else conclusive can be stated.
12th September
1981 - Gilgit
Wazarat (Jammu & Kashmir), India, Mw6.1 (HRV), 6.2Mb
(NEIC)
07:15:54.17 UTC, 35.693N, 73.594E, 33 kms depth
Atleast 220 people were killed, 2,500 were injured in
the Gilgit region. There were also unconfirmed reports
of surface faulting. The shock was felt in Srinagar
(J&K, India) and in Peshawar and Rawalpindi (Pakistan).
30 December 1983
- Hindukush Mountains, Afghanistan, Mw 7.4 (GS)
23:52:39.9 UTC, 36.37 N, 70.74 E, 215 kms depth
12 killed and damage in the Kabul-Samangan area. 14
more deaths occurred in Peshawar, Pakistan. Damage also
occurred in Tajikistan. The shock was felt in much of
northwestern Afghanistan, Tajikistan, Uzbekistan, Khyrgyzstan,
northern Pakistan and northern India.
29 July 1985
- Hindukush Mountains, Afghanistan, Mw 7.4 (GS)
07:54:44.0 UTC, 36.190 N, 70.896 E, 99 kms depth
5 killed in the districts of Chitral and Swat, Pakistan.
Damage and landslides also
occurred in Tajikistan. The
shock was felt much of Afghanistan. It was also felt
in parts of neighbouring Pakistan and Tajikistan. It
was felt as far away as New Delhi, India and Tashkent,
Uzbekistan.
31 January 1991
- Hindukush Mountains, Afghanistan, Mw 6.7 (NEIC)
23:03:33 UTC, 33.993 N, 70.432 E, 142 kms depth
200-400 killed in Konar, Nangarhar and Badakhshan provinces.
300 killed in the Malakhand-Chitral-Peshawar area of
Pakistan. 3 died of heart attacks at Khorog, Tajikistan.
The shock was felt much of Afghanistan. It was also
felt in parts of neighbouring Pakistan and Tajikistan.
It was felt as far away as New Delhi, India and Tashkent,
Uzbekistan.
9 August 1993
- Hindukush Mountains, Afghanistan, Mw7.0 (NEIC, HRV)
12:42:48.1 UTC, 36.379N, 70.868E, 215kms depth
Felt strongly over a wide region
of south and central Asia, from Dushanbe, Tajikistan
to as far south as Multan,
Pakistan.
27 February 1997
- Near Harnai (Baluchistan), Pakistan, Mw 7.3 (NEIC)
21:08:02.3
UTC, 29.976 N, 68.208 E, depth of 33 kms
One of the strongest
earthquakes in Pakistan for several decades. At least
50 people were killed in the region in the cities of
Quetta, Sibi and Harnai. Landslides blocked several
roads and railway tracks in the region. Felt throughout
central Baluchistan.
26 January 2001
- Near
Bhachau (Gujarat), India, Mw 7.6
03:16:41
UTC, 23.399 N, 70.316 E, depth of 22 kms
At least 11,500 were killed in Gujarat.
20 killed in southern Pakistan. Many heavily populated
areas in Kutchh and Saurashtra were affected. High-rise
buildings collapsed in Ahmedabad and Surat. Damage occurred
across Gujarat and even in the neighbouring states of
Madhya Pradesh, Maharashtra and Rajasthan. Felt throughout
the Indian Sub-continent as far as Bangladesh.
Details
1
November 2002
- Gilgit-Astore region (P.O.K.),
Mb 5.5
22:09:29 UTC, 35.540
N, 74.640
E, 33 kms depth
Felt over a wide area of P.O.K. Landslides
reported in the region and the Karakoram Highway was
blocked. At least 1 person killed in a landslide.
Details
3
November 2002
- Gilgit-Astore region (P.O.K.),
Mb 5.3
07:33:40 UTC, 35.500
N, 74.500
E, 33 kms depth
Felt over a wide area of P.O.K. Also
felt at Islamabad and Peshawar, Pakistan and at Srinagar,
India. Major landslides reported in the region and the
Karakoram Highway was blocked. At least 17 person killed
and 65 injured. 1,500 people left homeless.
20 November 2002
- Gilgit-Astore region (P.O.K.),
Mw 6.3
21:32:31 UTC, 35.529
N, 74.531
E, 33 kms depth
23 killed in the Astore Valley and
heavy damage in the area. Major landslides reported
in the Astore and Gilgit areas. 15,000 people rendered
homeless. Felt at Islamabad, Pakistan and at Srinagar,
India.
Details
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