March 2007 Sumatra earthquakes
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The March 2007 Sumatra earthquakes occurred near the northern end of
Lake Singkarak Lake Singkarak ( id, Danau Singkarak) is a lake in West Sumatra, Indonesia. It is located between the regencies of Tanah Datar and Solok Regency. It has an area of 107.8 km2, being approximately 21 km long and 7 km wide. The natura ...
in Sumatra,
Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...
, on March 6. The first shock in this
earthquake doublet __NOTOC__ In seismology, doublet earthquakes – and more generally, multiplet earthquakes – were originally identified as multiple earthquakes with nearly identical waveforms originating from the same Epicenter, location. They are now characteri ...
struck with a maximum
Mercalli intensity 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 ...
of VIII (''Severe'') and the second shock that arrived two hours later had a maximum Mercalli intensity of VI (''Strong'').


Earthquakes

The initial quake at 10:49 (03:49 UTC) measured 6.4 on the
moment magnitude scale 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 ...
and the second quake at 12:49 (05:49 UTC) measured 6.3. The earthquakes were felt as far away as
Singapore Singapore (), officially the Republic of Singapore, is a sovereign island country and city-state in maritime Southeast Asia. It lies about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, bor ...
and
Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...
, which prompted the evacuation of some buildings there.


Effects

Over 60 fatalities and 460 serious injuries have been reported, spread across many towns and regencies in
West Sumatra West Sumatra ( id, Sumatra Barat) is a province of Indonesia. It is located on the west coast of the island of Sumatra and includes the Mentawai Islands off that coast. The province has an area of , with a population of 5,534,472 at the 2020 cen ...
. Over 43,000 houses were damaged, with over 12,000 of those severely damaged. The severe damage to other structures includes over 130 public facilities, 310 mosques, 60 government buildings, 370 schools, and 230 shops. According to the governor of West Sumatra,
Agam Regency Agam Regency ( id, Kabupaten Agam) is a regency of West Sumatra, Indonesia. It has an area of 2,264.89 km2 and had a population of 454,853 at the 2010 census and 529,138 at the 2020 census.Badan Pusat Statistik, Jakarta, 2021. The regency sea ...
is the worst affected area, though other areas including Solok Regency and
Tanah Datar Tanah Datar Regency is a landlocked regency (''kabupaten'') in West Sumatra province, Indonesia. The regency has an area of 1,336 km2, and had a population of 338,484 at the 2010 Census, which rose to 371,704 at the 2020 Census. The regency sea ...
are also badly affected. The total value of damage is estimated to be around 1.4 trillion Indonesian rupiah (US$160 million).


Response

A variety of local and international aid organizations have deployed to the region to assist victims. A number of countries have pledged aid, including the Netherlands (US$2.0 million), Sweden (US$1.0 million), Canada (US$0.21 million), Malaysia (US$0.16 million), United States (US$0.1 million) and Taiwan (US$0.06 million). The US AID has supplied them with all sorts of essentials like blankets, water, food and first aid kits.


See also

*
List of earthquakes in 2007 Earthquakes in 2007 resulted in many fatalities. The 2007 Peru earthquake was the deadliest with 595 fatalities. The September 2007 Sumatra earthquake was the largest in 2007 with an 8.4 on the moment magnitude scale. The 2007 Solomon Islands e ...
* List of earthquakes in Indonesia


References


Further reading

*M. Nakano, H. Kumagai, S. Toda, R. Ando, T. Yamashina, H. Inoue, Sunarjo; Source model of an earthquake doublet that occurred in a pull-apart basin along the Sumatran fault, Indonesia, Geophysical Journal International, Volume 181, Issue 1, 1 April 2010, Pages 141–153, https://doi.org/10.1111/j.1365-246X.2010.04511.x * Natawidjaja, D. H., Tohari, A., Subowo, E., Daryono, M.R. and Boen, T., 2007. Western Sumatra Earthquakes of March 6, 2007, EERI Special Earthquake Report, 1–8


External links

* {{DEFAULTSORT:2007 Sumatra Earthquakes Sumatra 2007 Sumatra March 2007 events in Asia History of West Sumatra Earthquakes in Sumatra