The 1803 Garhwal earthquake occurred in the early morning of September 1 at 01:30
local time
Local time is the time observed in a specific locality. There is no canonical definition. Originally it was mean solar time, but since the introduction of time zones it is generally the time as determined by the time zone in effect, with daylight s ...
. The estimated 7.8-magnitude-earthquake had an epicenter in the
Garhwal Himalaya
The Garhwal Himalayas are mountain ranges located in the Indian state of Uttarakhand.
Geology
This range is also a part of Himalaya Sivalik Hills, the outer most hills of the Himalaya located in Himachal Pradesh and Uttarakhand.
Major peaks ...
near
Uttarkashi
Uttarkashi, meaning Kashi of the north, is a town located in Uttarkashi district in Uttarakhand, India. Uttarkashi town is headquarters of the district. Uttarkashi is also known as Somya Kashi. Uttarkashi is a religious place for spiritual and ...
,
British India
The provinces of India, earlier presidencies of British India and still earlier, presidency towns, were the administrative divisions of British governance on the Indian subcontinent. Collectively, they have been called British India. In one ...
. Major damage occurred in the Himalaya and
Indo-Gangetic Plain
The Indo-Gangetic Plain, also known as the North Indian River Plain, is a fertile plain encompassing northern regions of the Indian subcontinent, including most of northern and eastern India, around half of Pakistan, virtually all of Bangla ...
, with the loss of between 200 and 300 lives.
It is among the largest Himalaya earthquakes of the 19th-century, caused by the result of
thrust fault
A thrust fault is a break in the Earth's crust, across which older rocks are pushed above younger rocks.
Thrust geometry and nomenclature
Reverse faults
A thrust fault is a type of reverse fault that has a dip of 45 degrees or less.
If ...
ing.
Tectonic setting
The Himalaya is located at the
convergent boundary
A convergent boundary (also known as a destructive boundary) is an area on Earth where two or more Plate tectonics, lithospheric plates collide. One plate eventually slides beneath the other, a process known as subduction. The subduction zone can ...
where active convergence leads to
continental collision
In geology, continental collision is a phenomenon of plate tectonics that occurs at convergent boundaries. Continental collision is a variation on the fundamental process of subduction, whereby the subduction zone is destroyed, mountains prod ...
. The India and Eurasian plates began colliding approximately 50 million years ago when the
Tethys Ocean
The Tethys Ocean ( el, Τηθύς ''Tēthús''), also called the Tethys Sea or the Neo-Tethys, was a prehistoric ocean that covered most of the Earth during much of the Mesozoic Era and early Cenozoic Era, located between the ancient continents ...
closed. The
Main Himalayan Thrust
The Main Himalayan Thrust (MHT) is a décollement under the Himalaya Range. This thrust fault follows a NW-SE strike, reminiscent of an arc, and gently dip towards the north, beneath the region. It is the largest active continental megathrust f ...
(MHT), a
decollement structure, defines the boundary between the
Indian Plate
The Indian Plate (or India Plate) is a minor tectonic plate straddling the equator in the Eastern Hemisphere. Originally a part of the ancient continent of Gondwana, the Indian Plate broke away from the other fragments of Gondwana , began mov ...
and
Eurasian Plate
The Eurasian Plate is a tectonic plate that includes most of the continent of Eurasia (a landmass consisting of the traditional continents of Europe and Asia), with the notable exceptions of the Indian subcontinent, the Arabian subcontinent and ...
. The convergent zone also contains three other major faults; the
Main Boundary Thrust,
Main Central Thrust The Main Central Thrust is a major geological fault where the Indian Plate has pushed under the Eurasian Plate along the Himalaya. The fault slopes down to the north and is exposed on the surface in a NW-SE direction (strike). It is a thrust fault ...
and
South Tibetan Detachment
The South Tibetan Detachment is one of the major faults in the Himalaya Mountains.
Background
Understanding the formation of the Himalayan mountains has been a goal of structural geologists for a long time. Many of the problems and disagreements ...
. At the surface, the Main Himalayan Thrust propagates along the
Main Frontal Thrust
The Main Frontal Thrust (MFT), also known as the Himalayan Frontal Thrust (HFT) is a geological fault in the Himalayas that defines the boundary between the Himalayan foothills and Indo-Gangetic Plain. The fault is well expressed on the surfac ...
(MFT). These faults runs for approximately 2,300 km in an east-west direction, parallel to the southern foothills of the
Lower Himalayan Range
The Lower Himalayan Range ( ne, पर्वत शृङ्खला parbat shrinkhalā) – also called the Middle Himalayas or Lesser Himalayas or Himachal – is a major east–west mountain range with elevations 3,700 to 4,500 m (12,000 to ...
from
Assam
Assam (; ) is a state in northeastern India, south of the eastern Himalayas along the Brahmaputra and Barak River valleys. Assam covers an area of . The state is bordered by Bhutan and Arunachal Pradesh to the north; Nagaland and Manipur ...
, through
Nepal
Nepal (; ne, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne,
सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in South Asia. It is mai ...
, and into
Pakistan
Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ...
. This major
thrust fault
A thrust fault is a break in the Earth's crust, across which older rocks are pushed above younger rocks.
Thrust geometry and nomenclature
Reverse faults
A thrust fault is a type of reverse fault that has a dip of 45 degrees or less.
If ...
dips to the north, beneath the Himalaya at a shallow angle. It is the source of most of Himalayan earthquakes.
Earthquakes on the convergent boundary are megathrust events that repeat every few centuries. Large Himalayan earthquakes including those in
1505,
1934
Events
January–February
* January 1 – The International Telecommunication Union, a specialist agency of the League of Nations, is established.
* January 15 – The 8.0 1934 Nepal–Bihar earthquake, Nepal–Bihar earthquake strik ...
and
1950
Events January
* January 1 – The International Police Association (IPA) – the largest police organization in the world – is formed.
* January 5 – 1950 Sverdlovsk plane crash, Sverdlovsk plane crash: ''Aeroflot'' Lisunov Li-2 cr ...
with magnitudes of 8.0+ were the result of rupturing the Main Himalayan Thrust. These events generated surface ruptures by breaching the surface via the MFT.
Impact
![Kuttull Minor, Delhi](https://upload.wikimedia.org/wikipedia/commons/2/2a/Kuttull_Minor%2C_Delhi._The_Qutb_Minar%2C_an_aquatint_by_Thomas_Daniell%2C_1805.jpg)
At
Srinagar
Srinagar (English: , ) is the largest city and the summer capital of Jammu and Kashmir, India. It lies in the Kashmir Valley on the banks of the Jhelum River, a tributary of the Indus, and Dal and Anchar lakes. The city is known for its natu ...
in the
meizoseismal area
The meizoseismal area in an earthquake is the area of maximum damage. For example, in the Charleston, South Carolina, earthquake of 1886, the meizoseismal area was an area about twenty by thirty miles stretching northeast between Charleston and ...
, an estimated 500–1,000 homes were destroyed, and a
landslide
Landslides, also known as landslips, are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls, deep-seated grade (slope), slope failures, mudflows, and debris flows. Landslides occur in a variety of ...
occurred. Ground
fissure
A fissure is a long, narrow crack opening along the surface of Earth. The term is derived from the Latin word , which means 'cleft' or 'crack'. Fissures emerge in Earth's crust, on ice sheets and glaciers, and on volcanoes.
Ground fissure
A ...
s and
liquefaction
In materials science, liquefaction is a process that generates a liquid from a solid or a gas or that generates a non-liquid phase which behaves in accordance with fluid dynamics.
It occurs both naturally and artificially. As an example of the ...
events took place in
Mathura
Mathura () is a city and the administrative headquarters of Mathura district in the Indian state of Uttar Pradesh. It is located approximately north of Agra, and south-east of Delhi; about from the town of Vrindavan, and from Govardhan. ...
, near
Aligarh
Aligarh (; formerly known as Allygarh, and Kol) is a city in the state of Uttar Pradesh in India. It is the administrative headquarters of Aligarh district, and lies northwest of state capital Lucknow and approximately southeast of the capita ...
and
Agra
Agra (, ) is a city on the banks of the Yamuna river in the Indian state of Uttar Pradesh, about south-east of the national capital New Delhi and 330 km west of the state capital Lucknow. With a population of roughly 1.6 million, Agra is ...
.
An estimated 200–300 people died due to collapsing roofs. Partial damage occurred in the towns
Devprayag
Devprayag (Deva prayāga) is a town and a nagar panchayat, near New Tehri, New Tehri city in Tehri Garhwal district, Tehri Garhwal District in the state of Uttarakhand, India, and is the final one of the Panch Prayag (five confluences) of Alak ...
,
Joshimath
Joshimath, also known as Jyotirmath, is a city and a municipal board in Chamoli District in the Indian state of Uttarakhand. Located at a height of 6150 feet (1875 m), it is a gateway to several Himalayan mountain climbing expeditions, trekki ...
,
Badrinath
Badrinath is a town and nagar panchayat in Chamoli district in the state of Uttarakhand, India. A Hindu holy place, it is one of the four sites in India's Char Dham Hindu pilgrimage, pilgrimage and is also part of India's Chota Char Dham pilgr ...
and
Almora
Almora ( Kumaoni: ''Almāḍ'') is a municipal board and a cantonment town in the state of Uttarakhand, India. It is the administrative headquarters of Almora district. Almora is located on a ridge at the southern edge of the Kumaon Hills of the ...
. A landslide buried the small village and fort on the eastern bank of the
Yamuna River
The Yamuna ( Hindustani: ), also spelt Jumna, is the second-largest tributary river of the Ganges by discharge and the longest tributary in India. Originating from the Yamunotri Glacier at a height of about on the southwestern slopes of Ban ...
in
Uttar Pradesh
Uttar Pradesh (; , 'Northern Province') is a state in northern India. With over 200 million inhabitants, it is the most populated state in India as well as the most populous country subdivision in the world. It was established in 1950 ...
.
The shaking was strongly felt in
Mathura
Mathura () is a city and the administrative headquarters of Mathura district in the Indian state of Uttar Pradesh. It is located approximately north of Agra, and south-east of Delhi; about from the town of Vrindavan, and from Govardhan. ...
and lasted several minutes. It destroyed many
pucca homes in the city. Many residents were driven out of their homes, and into the streets or agricultural fields. A pregnant woman died after being struck by falling tiles. Large fissures occurred in fields, spilling vast quantities of water. One of the fissures partially swallowed the
dome
A dome () is an architectural element similar to the hollow upper half of a sphere. There is significant overlap with the term cupola, which may also refer to a dome or a structure on top of a dome. The precise definition of a dome has been a m ...
of a mosque. The fissures continued to eject water for several weeks, benefitting the residents who were able to obtain water.
The Hindu
Badrinath Temple
Badrinath or Badrinarayana Temple is a Hindu temple dedicated to Vishnu. It is situated in the town of Badrinath in Uttarakhand, India. The temple is also one of the 108 Divya Desams dedicated to Vishnu - holy shrines for Vaishnavas - who is ...
suffered severe damage from the quake.
Several temples, including the
Kashi Vishwanath Temple
The Kashi Vishwanath Temple is a famous Hindu temple dedicated to Lord Shiva. It is located in Vishwanath Gali of Varanasi, Uttar Pradesh in India. The temple stands on the western bank of the holy river Ganges, Ganga, and is one of the twe ...
in
Uttarkashi
Uttarkashi, meaning Kashi of the north, is a town located in Uttarkashi district in Uttarakhand, India. Uttarkashi town is headquarters of the district. Uttarkashi is also known as Somya Kashi. Uttarkashi is a religious place for spiritual and ...
, and
Tungnath
Tungnath ( IAST:tuņgnāth) is one of the highest Shiva temples in the world and is the highest of the five Panch Kedar temples located in the Rudraprayag district, in the Indian state of Uttarakhand. The Tungnath (literal meaning: Lord of the ...
, were totally destroyed.
The earthquake occurred at the beginning of the
Siege of Aligarh
The siege of Aligarh also known as the Battle of Aligarh was fought between the Maratha Confederacy and the British East India Company during the Second Anglo-Maratha War (1803–1805) at Aligarh, India.
Aligarh Fort, one of the strongest forts ...
during
Second Anglo-Maratha War
}
The Second Anglo-Maratha War (1803–1805) was the second conflict between the British East India Company and the Maratha Empire in India.
Background
The British had supported the "fugitive" Peshwa Raghunathrao in the First Anglo-Maratha War, ...
.
Aligarh Fort
Aligarh Fort (''Aligarh Qila'') is located in the patwari nagla city of Aligarh, Uttar Pradesh. It is also called "Aligarh Qila". Most part of it is damaged and only ruins remain. The fort is situated near the Grand Trunk Road and consists of a ...
was captured by the
British East India Company
The East India Company (EIC) was an English, and later British, joint-stock company founded in 1600 and dissolved in 1874. It was formed to trade in the Indian Ocean region, initially with the East Indies (the Indian subcontinent and Southea ...
from the
Marathi people
The Marathi people (Marathi: मराठी लोक) or Marathis are an Indo-Aryan ethnolinguistic group who are indigenous to Maharashtra in western India. They natively speak Marathi, an Indo-Aryan language. Maharashtra was formed as a M ...
and
French. The siege came to an end because the severely damage fort walls were breached, easing capture for the British.
At
New Delhi
New Delhi (, , ''Naī Dillī'') is the capital of India and a part of the National Capital Territory of Delhi (NCT). New Delhi is the seat of all three branches of the government of India, hosting the Rashtrapati Bhavan, Parliament House ...
, a
cupola
In architecture, a cupola () is a relatively small, most often dome-like, tall structure on top of a building. Often used to provide a lookout or to admit light and air, it usually crowns a larger roof or dome.
The word derives, via Italian, from ...
in the
Qutb Minar
The Qutb Minar, also spelled Qutub Minar and Qutab Minar, is a minaret and "victory tower" that forms part of the Qutb complex, which lies at the site of Delhi’s oldest fortified city, Lal Kot, founded by the Tomar Rajputs. It is a UNESCO Worl ...
collapsed and the main column was structurally weakened.
Reports documented that the spire of the
Khanqah-e-Moula
Khanqah-e-Moula ( ks, خانٛقاهِ معلىٰ), also known as Shah-e-Hamadan Masjid and Khanqah, is a mosque located in the Old City of Srinagar in Jammu and Kashmir, India. Situated on the right bank of the river Jhelum between the Fateh ...
in
Kashmir Valley
The Kashmir Valley, also known as the ''Vale of Kashmir'', is an intermontane valley concentrated in the Kashmir Division of the Indian- union territory of Jammu and Kashmir. The valley is bounded on the southwest by the Pir Panjal Range and ...
's
Srinagar
Srinagar (English: , ) is the largest city and the summer capital of Jammu and Kashmir, India. It lies in the Kashmir Valley on the banks of the Jhelum River, a tributary of the Indus, and Dal and Anchar lakes. The city is known for its natu ...
also collapsed, although it may have been a conflagaration with a previous earthquake. Fissuring was also observed in the city.
Seiche
A seiche ( ) is a standing wave in an enclosed or partially enclosed body of water. Seiches and seiche-related phenomena have been observed on lakes, reservoirs, swimming pools, bays, harbors, caves and seas. The key requirement for formation o ...
s in a water tank at the
Acharya Jagadish Chandra Bose Indian Botanic Garden
The Acharya Jagadish Chandra Bose Indian Botanic Garden, previously known as Indian Botanic Garden and the Calcutta Botanic Garden, is situated in Shibpur, Howrah near Kolkata. They are commonly known as the Calcutta Botanical Garden and prev ...
in
Calcutta
Kolkata (, or , ; also known as Calcutta , List of renamed places in India#West Bengal, the official name until 2001) is the Capital city, capital of the Indian States and union territories of India, state of West Bengal, on the eastern ba ...
caused by the quake was strong enough to throw fishes out of their aquarium.
Earthquake
The earthquake is believed to have
ruptured the MHT but did not propagate to the surface. It shared similar characteristics with the
1905 Kangra and the two
2015 Nepal earthquake
The April 2015 Nepal earthquake (also known as the Gorkha earthquake) killed 8,964 people and injured 21,952 more. It occurred at on Saturday, 25 April 2015, with a magnitude of 7.8Moment magnitude scale, Mw or 8.1Surface wave magnitude, Ms an ...
s; all three events failed to rupture the MHT, hence did not produce any
surface rupture
In seismology, surface rupture (or ground rupture, or ground displacement) is the visible offset of the ground surface when an earthquake rupture along a fault affects the Earth's surface. Surface rupture is opposed by buried rupture, where the ...
. This
blind thrust earthquake
A blind thrust earthquake occurs along a thrust fault that does not show signs on the Earth's surface, hence the designation "blind". Such faults, being invisible at the surface, have not been mapped by standard surface geological mapping. Sometim ...
is the largest in the Indian Himalaya during the 19th-century. Another similar-sized event
occurred in Nepal in August 1833. This earthquake was located immediately east of the great 1505 earthquake rupture zone.
Two smaller earthquakes; the
1991 Uttarkashi and
1999 Chamoli earthquake
The 1999 Chamoli earthquake occurred on 29 March in the Chamoli district in the Indian state of Uttar Pradesh (now in Uttarakhand). Approximately 103 people died in the earthquake.
Cause
The Himalaya Range has been undergoing crustal shortenin ...
s, also occurred in the epicenter region of the 1803 event.
Descriptions of severe damage and ground effects from the event suggest the
earthquake rupture
In seismology, an earthquake rupture is the extent of slip that occurs during an earthquake in the Earth's crust. Earthquakes occur for many reasons that include: landslides, movement of magma in a volcano, the formation of a new fault, or, most ...
initiated beneath the Himalaya range, and propagated south; up-dip along the MHT in a northwest-southeast direction.
The rupture ceased just short of the MFT.
Accumulated stress to the east caused by the 1505 event was released during the 1803 quake. An estimated maximum coseismic slip of 4.5 meters or less occurred. Since then, roughly 3 meters of slip have accumulated. The two earthquakes in 1991 and 1999 failed to release the seismic strain accumulated since the 1803 event.
The
moment magnitude
The moment magnitude scale (MMS; denoted explicitly with or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on its seismic moment. It was defined in a 1979 pape ...
was previously assigned 8.0 in past
academic journal
An academic journal or scholarly journal is a periodical publication in which scholarship relating to a particular academic discipline is published. Academic journals serve as permanent and transparent forums for the presentation, scrutiny, and d ...
s based on damage descriptions and felt reports from the historical documentation, but more recent reassessments indicate a much smaller magnitude of 7.8.
The earthquake magnitude has even been downgraded to 7.3 in some journals.
Intensity
A macroseismic intensity survey from 1979 assigned the holy city
Badrinath
Badrinath is a town and nagar panchayat in Chamoli district in the state of Uttarakhand, India. A Hindu holy place, it is one of the four sites in India's Char Dham Hindu pilgrimage, pilgrimage and is also part of India's Chota Char Dham pilgr ...
with VII (''Very strong'')–IX (''Violent'')-level shaking on the
Modified Mercalli intensity scale
The Modified Mercalli intensity scale (MM, MMI, or MCS), developed from Giuseppe Mercalli's Mercalli intensity scale of 1902, is a seismic intensity scale used for measuring the intensity of shaking produced by an earthquake. It measures the eff ...
. A 2005 journal by geologist
C. P. Rajendran
Chittenipattu Puthenveettil Rajendran, (born 29 May 1955) also known among his peers as CP, is an Indian geologist who has worked mainly on the Indian earthquakes and tectonics.
Education
Rajendran did his schooling in Thiruvananthapuram (Triva ...
and seismologist
Kusala Rajendran published in ''
Tectonophysics
Tectonophysics, a branch of geophysics, is the study of the physical processes that underlie tectonic deformation. The field encompasses the spatial patterns of stress, strain, and differing rheologies in the lithosphere and asthenosphere of the ...
'' assigned the maximum
Medvedev–Sponheuer–Karnik scale
The Medvedev–Sponheuer–Karnik scale, also known as the MSK or MSK-64, is a macroseismic intensity scale used to evaluate the severity of ground shaking on the basis of observed effects in an area where an earthquake transpires.
The scale was f ...
intensity at IX–X in
Srinagar
Srinagar (English: , ) is the largest city and the summer capital of Jammu and Kashmir, India. It lies in the Kashmir Valley on the banks of the Jhelum River, a tributary of the Indus, and Dal and Anchar lakes. The city is known for its natu ...
and
Devprayag
Devprayag (Deva prayāga) is a town and a nagar panchayat, near New Tehri, New Tehri city in Tehri Garhwal district, Tehri Garhwal District in the state of Uttarakhand, India, and is the final one of the Panch Prayag (five confluences) of Alak ...
.
See also
*
List of earthquakes in Nepal
Lying in one of the most seismically active regions of the world, Nepal has a long history of earthquakes. The first documented earthquake event in the country dates back to 7 June 1255, during the reign of King Abhaya Malla. The quake, measuring 7 ...
*
List of earthquakes in India
The Indian subcontinent has a history of earthquakes. The reason for the intensity and high frequency of earthquakes is the Indian plate driving into Asia at a rate of approximately 47 mm/year. The following is a list of major earthquakes whic ...
*
List of historical earthquakes
Historical earthquakes is a list of significant earthquakes known to have occurred prior to the beginning of the 20th century. As the events listed here occurred before routine Seismometer, instrumental recordings, they rely mainly on the analys ...
References
{{DEFAULTSORT:Garhwal earthquake
Earthquakes in India
Earthquakes in Tibet
1803 disasters
Buried rupture earthquakes
1803 in India
1803
Events
* January 1 – The first edition of Alexandre Balthazar Laurent Grimod de La Reynière's ''Almanach des gourmands'', the first guide to restaurant cooking, is published in Paris.
* January 5 – William Symington demonstrates his ...
1803 in Asia
Disasters in Uttarakhand
Garhwal division
September 1803 events