2019 Kashmir earthquake

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2019 Kashmir earthquake
2019 Kashmir Earthquake - ShakeMap.jpg
Pakistan relief location map.jpg
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Kabul
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Islamabad
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Lahore
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UTC  time2019-09-24 11:01:55
ISC  event 616494857
USGS-ANSS ComCat
Local date24 September 2019
Local time16:02 Pakistan Standard Time
Magnitude5.4 Mww [1]
6.0 Mw [2]
Depth10 km (6.2 mi)
Epicenter 33°06′22″N73°45′58″E / 33.106°N 73.766°E / 33.106; 73.766
Type Thrust
Areas affectedPakistan
Max. intensity VII (Very strong)
VIII (Heavily damaging)
Casualties40 dead, 850 injured

The 2019 Kashmir earthquake struck regions of Pakistan with an epicentre in Azad Kashmir [3] on 24 September at 16:02 local time (11:02 UTC). It had a magnitude of 5.4 Mww and a maximum felt intensity of VII (Very strong) on the Modified Mercalli intensity scale [4] or VIII (Heavily damaging) on the European macroseismic scale. [5] There was severe damage in Mirpur District, causing the deaths of 40 people and injuring a further 850. [6] The epicentre of the shallow quake was near the city of Mirpur, Pakistan. [7] The tremors were felt in the Kashmir region, Punjab (Pakistan), Punjab (India), Uttarakhand and northern parts of India including New Delhi. [8]

Contents

Tectonic setting

Kashmir lies at the southern margin of the broad zone of continental collision between the Eurasian and Indian Plates. The rate of convergence between these plates near this location is 38 mm per year. [9] The main structures involved in accommodating this convergence are large thrust faults, such as the Main Central Thrust and the Main Frontal Thrust. Within the frontal thrust zone, there are many individual thrust faults. Many damaging earthquakes have resulted from movement on such thrust faults, such as the 2005 Kashmir earthquake which caused the deaths of around 87,000 people. [1]

Earthquake

The earthquake which occurred at a depth of 10 km was the result of thrust faulting associated with the active convergent boundary. Further analysis has showed that it occurred on a near horizontal-dipping thrust fault on the interface of the plate boundary. The Main Himalayan Thrust; the décollement structure underlying the Himalayas was the source of the earthquake. The rupture occurred on a segment of the décollement where it branches up to the surface via the Main Frontal Thrust. Up to 0.4 meter of slip occurred during the event, releasing a fraction of energy accumulated since a large quake in 1555. Modelling of the earthquake with InSAR data indicated a moment magnitude of 6.0. [2]

Damage

The earthquake caused severe damage to 135 houses in Mirpur District, with a further 319 being partially damaged, most in Mirpur and just four in Bhimber District. Two bridges were reported damaged and parts of several roads were affected, particularly 14 km of the Main Jatlan Road. [10] [11]

According to the chairman of Pakistan's National Disaster Management Authority (NDMA), "In Mirpur, besides the city, a small town Jatlan, and two small villages Manda and Afzalpur" were among the worst-hit areas. According to him, the main road which runs alongside a river from Mangla to Jatlan suffered major damage. [12] According to the officials, the Mangla Dam, Pakistan's major water reservoir, was spared. However, the dam's power house was closed, which resulted in a loss of 900 megawatts to Pakistan's national power grid. At 7:20 pm, power generation at Mangla was resumed, restoring 700 MW to the national grid. [13]

According to a media report, cracks and fissures had appeared in the Upper Jhelum canal. Flood water had managed to enter the Chak Nigah village in Jatlan town. [14] The canal was subsequently shut as a precautionary measure. [13]

Casualties

Forty people have died and more than 850 injured as per the reports published on 26 September. Of those who died, thirty-three were in Mirpur District, four in Bhimber District, and one more in Jhelum District. [10] Reuters reported, citing architects, that the large number of casualties were due to shoddy building construction methods and weak construction standards in Pakistan. [3] Mirpur's deputy inspector general of police Sardar Gulfaraz Khan stated that a large number of deaths were caused due to the collapse of old houses in the villages. [3]

Response

The Prime Minister of Azad Jammu and Kashmir, Farooq Haider Khan, cut short a visit to Lahore and went back to his native region immediately after the reports of the damage emerged. [15] NDMA vehicles laden with 200 tents, 800 blankets, 200 kitchen sets and 100 medical kits were dispatched to affected areas. [12]

Aftershocks

On 26 September at 12:30, two days after the major earthquake, another earthquake struck Mirpur, which led to a further 67 people being injured and one death reported. [16] It was of magnitude 4.7 and centered at Thothal Mirpur at the depth of 10 kilometres (6.2 mi). [17]

See also

Related Research Articles

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<span class="mw-page-title-main">Main Himalayan Thrust</span> Geological feature

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The 1833 Nepal–India earthquake occurred on August 26 at 22:58 local time (NPT). This earthquake had an estimated moment magnitude of 7.6–7.9 and struck with an epicenter somewhere in or near the Kathmandu Valley. The earthquake caused major destruction in numerous towns and villages in Nepal, northern India, and Tibet. The earthquake was also felt in Chittagong, Bangladesh. Despite the extent of the damage, the number of fatalities resulting from the earthquake was surprisingly low, at approximately 500. This was because the mainshock was preceded by two smaller but intense foreshocks earlier that day, causing many residents to take refuge outside their homes.

The 2021 Assam earthquake struck 11 km away from Dhekiajuli, Assam, India at 07:51 (IST) on April 28, 2021 with a moment magnitude of 6.0 at 34.0 km (21.1 mi) depth. The quake struck with an epicenter 140 km north of the main city of Guwahati. It resulted in two fatalities and at least 12 injuries.

The 2020 Kashgar earthquake, also known as the Jiashi earthquake occurred on 19 January 2020 at 21:27:56 China Standard Time in Xinjiang Province, China. According to the United States Geological Survey, the earthquake had a moment magnitude of 6.0 and a surface wave magnitude of 6.4 according to the China Earthquake Network Center. It struck at a shallow depth of 5.6 km according to the USGS while the CENC has the figure at 16 km. Local emergency management agencies said the earthquake damaged more than 1,000 homes and businesses in the nearby populated towns and villages. One person is known to have died while two other children were injured.

The 1555 Kashmir earthquake occurred at around midnight in the month of Ashvin in the Hindu calendar, or September in the Gregorian calendar, although the exact day of occurrence is not known. The earthquake seriously impacted the Kashmir Valley in present-day Pakistan and northwestern India. A moment magnitude (Mw ) of 7.6 to 8.0 and Modified Mercalli intensity of XII (Extreme) has been estimated for the earthquake. Thought to be one of the most destructive in the Kashmir Valley, the earthquake caused serious widespread damage and ground effects, killing an estimated 600–60,000 individuals.

An earthquake struck approximately 53 kilometres SSE of the town of Mansfield, in the Victorian Alps of Australia on 22 September 2021, at 09:15 local time. The earthquake measured 5.9 on the moment magnitude scale. The earthquake caused minor structural damage in parts of Melbourne and left one person injured. The earthquake was also felt in New South Wales, Australian Capital Territory, South Australia and Tasmania. The earthquake was substantially stronger than the 1989 Newcastle earthquake that measured 5.6 and killed 13 people.

<span class="mw-page-title-main">2021 Balochistan earthquake</span> Earthquake near Harnai, Pakistan

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The 1992 Kohat earthquake struck Khyber Pakhtunkhwa Province in Pakistan on May 20. The Mw  6.3 earthquake inflicted significant damage in the nearby city Kohat. An estimated 36 people died and 100 were injured in the Peshawar and Kohat districts. Four-hundred (400) homes were wiped out, affecting 2,100 residents in the region.

The 1885 Kashmir earthquake, also known as the Baramulla earthquake occurred on 30 May in Srinagar. It had an estimated moment magnitude of Mw  6.3–6.8 and maximum Medvedev–Sponheuer–Karnik scale intensity of VIII (Damaging). At least 3,081 people died and severe damage resulted.

The 1980 Nepal earthquake devastated the Nepal–India border region on the evening of July 29. The epicenter of the 6.6 Mw earthquake was located in Nepal, northwest of Khaptad National Park. At least 200 people died and 5,600 were injured in the disaster. Extensive damage occurred on both sides of the border, amounting to 245 million USD.

References

  1. 1 2 ANSS. "Pakistan 2019: M 5.6 – 3km S of New Mirpur, Pakistan". Comprehensive Catalog. U.S. Geological Survey. Retrieved 24 September 2019.
  2. 1 2 K.M. Sreejith; M.C.M. Jasir; Ritesh Agrawal; A.S. Rajawat (2021). "The 2019 September 24, Mw = 6, Mirpur earthquake, NW Himalaya: Geodetic evidence for shallow, near-horizontal décollement rupture of the Main Himalayan Thrust". Tectonophysics . Elsevier. 816 (229013): 229013. Bibcode:2021Tectp.81629013S. doi:10.1016/j.tecto.2021.229013.
  3. 1 2 3 "Shoddy homes worsen Pakistan earthquake damage". Reuters. 26 September 2019. Retrieved 26 September 2019.
  4. Masood Rafi, Muhammad; Ahmed, Muhammad; Hashmat Lodi, Sarosh; Varum, Humberto; Tausif Arshad, Muhammad Tausif; Ahmad, Naveed (22 May 2023). "Development of Fragility Functions for Brick Masonry Structures Using Damage Data from September 24, 2019, Earthquake in Mirpur, Azad Kashmir". J. Perform. Constr. Facil. 37 (4). doi:10.1061/JPCFEV.CFENG-4441. S2CID   258851705.{{cite journal}}: CS1 maint: date and year (link)
  5. Barkat, Adnan; Javed, Farhan; Tan, Yen Joe; Ali, Aamir; Javed, Muhammad Tahir; Ahmad, Nabeel; Awais, Muhammad; Shah, Muhammad Ali; Iqbal, Talat (2022). "2019 Mw 5.9 Mirpur, Pakistan Earthquake: Insights from Integrating Geodetic, Seismic, and Field Observations". Seismological Research Letters. 93 (4): 2015–2026. Bibcode:2022SeiRL..93.2015B. doi:10.1785/0220210322. hdl: 11368/3029641 . S2CID   248926815.
  6. "AJK Government Declares Earthquake-hit Mirpur The Calamity-hit Area". UrduPoint. Archived from the original on 2019-09-28. Retrieved 2019-09-28.
  7. "23 dead, more than 300 injured as 5.6-magnitude quake rocks northern Pakistan". Dawn. September 24, 2019.
  8. "Tremors In Delhi, Parts Of North India After 6.3 Magnitude Earthquake In Pakistan". NDTV.com. Retrieved 26 September 2019.
  9. USGS. "Himalaya tectonic summary map" (PDF). Retrieved 27 September 2019.
  10. 1 2 National Disaster Management Authority (26 September 2019). "NDMA Situation Report No. 04 - Mirpur Earthquake 2019 (Dated - 26 September 2019 @ 1530 hours)" (PDF). Retrieved 26 September 2019.
  11. Chaudhry, Fahad, Tariq Naqash (25 September 2019). "Death toll from quake climbs to 38 as relief operations continue". Dawn. Pakistan. Retrieved 26 September 2019.
  12. 1 2 "NDMA chairman briefs media about earthquake damage, rescue efforts". Dawn. September 24, 2019.
  13. 1 2 "Mangla power generation resumes after being affected". Dawn. September 25, 2019.
  14. "Mangla Dam safe after earthquake but 900MW reportedly lost". Geo News. September 24, 2019.
  15. "Earthquake Strikes Pakistan, Killing at Least 22". The New York Times. September 24, 2019.
  16. AFP, Naqash, Tariq (26 September 2019). "67 injured as shallow tremor rocks Mirpur, Jhelum and adjoining areas". Dawn. Pakistan. Retrieved 26 September 2019.
  17. Koshy, Jacob (26 September 2019). "Fresh quake near India-Pakistan border". The Hindu. Retrieved 26 September 2019.

Further reading