2009 Sumatra earthquakes
{{Short description|Earthquake in Indonesia}}
{{Use dmy dates|date=September 2024}}
{{Infobox earthquake
| name = 2009 Sumatra earthquakes
| image = Damage from the 2009 Padang earthquake. Indonesia 2009. Photo- AusAID (10690967855).jpg
| alt =
| caption = A government building damaged by the earthquake
| map =
| map_alt =
| map_caption =
| map2 = {{Location map | Indonesia Sumatra#Indonesia
| label =
| lat = -0.71
| long = 99.97
| mark = Bullseye1.png
| marksize = 40
| position = top
| width = 250
| float = right
| relief =yes
| caption = }}
| timestamp = 2009-09-30 10:16:10
| isc-event = 13801688
| anss-url = usp000h237
| local-date = {{Start date|df=yes|2009|9|30}}
| local-time = 17:16:10 WIB
| duration =
| magnitude = 7.6 {{M|w|link=y}}
| depth = {{convert|90|km|mi|0|abbr=on}}
| location = {{coord|-0.71|99.97|region:ID_type:event|display=inline,title}}
| type = Reverse
| affected = West Sumatra
| damages =
| pga =
| tsunami = {{convert|27|cm|abbr=on}}
| landslide = Yes
| foreshocks =
| aftershocks =
}}
The first of the 2009 Sumatra earthquakes ({{langx|id|Gempa bumi Sumatra 2009}}) occurred on 30 September off the coast of Sumatra, Indonesia with a moment magnitude of 7.6 at {{tooltip|17:16:10 local time|10:16:10 UTC}}. The epicenter was {{convert|45|km|mi}} west-northwest of Padang, West Sumatra, and {{convert|220|km|mi}} southwest of Pekanbaru, Riau. Government and authorities confirmed 1,115 dead, 1,214 severely injured and 1,688 slightly injured. The most deaths occurred in the areas of Padang Pariaman (675), Padang (313), Agam (80) and Pariaman (37). In addition, around 135,000 houses were severely damaged, 65,000 houses were moderately damaged and 79,000 houses were slightly damaged. An estimated 250,000 families (1,250,000 people) have been affected by the earthquake through the total or partial loss of their homes and livelihoods.http://www.reliefweb.int/rw/rwb.nsf/db900SID/EDIS-7WSKEP{{dead link|date=September 2016 |bot=InternetArchiveBot |fix-attempted=yes }}
Tectonic setting
{{see also|Great Sumatran fault}}
Many of Indonesia's islands, including Sumatra, are situated within a zone of high seismic activity known as the Ring of Fire.{{cite news |url=https://www.france24.com/en/video/20181223-pacific-ring-fire-why-indonesia-prone-natural-disasters |work=France 24 |title=Pacific Ring of Fire: Why is Indonesia prone to natural disasters? |date=23 December 2018}}{{cite book |title=Environment, Trade and Society in Southeast Asia: A Longue Durée Perspective |pages=62–77 |chapter=History and Seismology in the Ring of Fire: Punctuating the Indonesian Past |author=Anthony Reid |editor1-last=Henley |editor1-first=David |editor2-last=Nordholt |editor2-first=Henk Schulte|jstor=10.1163/j.ctt1w76vg1.8 |year=2015 |publisher=Brill }} Along the Sunda megathrust, the Indo-Australian plate is being subducted beneath the Eurasian plate.{{cite web |url=https://earthobservatory.sg/resources/images/subduction-zone-under-sumatra-indonesia |work=Earth Observatory of Singapore |title=Subduction zone beneath Sumatra, Indonesia}} The subduction creates regular earthquakes, many of them of megathrust type. Specifically the Sumatran segment is currently experiencing a period of increased activity that began with the catastrophic 2004 Indian Ocean earthquake. Each earthquake of the sequence adds additional stresses to segments of the plate boundary that have not moved recently.{{cite journal |url=https://www.nature.com/articles/434291a?proof=true |journal=Nature |author1=John McCloskey |author2=Suleyman S. Nalbant |author3=Sandy Steacy |date=17 March 2005 |volume=434 |number=291 |title=Earthquake risk from co-seismic stress}}
==Earthquakes==
Because of its depth and the computed focal mechanism, the first earthquake is thought to have resulted from deformation within the mantle of the descending Australian plate, rather than from movement on the plate boundary itself.{{cite journal| last1 = McCloskey | first1 = J.| first2 = D. |last2=Lange|first3=F.|last3=Tilmann|first4=S. S.|last4=Nalbant|first5=A. F.|last5=Bell|first6=D. H.|last6=Natawidjaja|author6-link=Danny Hilman Natawidjaja|first7=A.|last7=Rietbrock | title = The September 2009 Padang earthquake| year = 2010| volume = 3| issue = 2 | doi = 10.1038/ngeo753 | journal = Nature Geoscience| pages = 70–71|bibcode = 2010NatGe...3...70M }} A second event, which measured 6.6 {{M|w|link=y}}, struck the province of Jambi in central Sumatra, 08:52:29 local time on 1 October 2009 at a depth of {{convert|15|km|mi}}, about 46 kilometres south-east of Sungaipenuh. Although it was in the same region, the United States Geological Survey specified that it was not an aftershock, as it was located too far from the initial quake.{{cite web|url=http://earthquakes.usgs.gov/eqcenter/recenteqsww/Quakes/us2009mfaf.php |title=Magnitude 6.6 – SOUTHERN SUMATRA, INDONESIA |date=1 October 2009 |publisher=United States Geological Survey |access-date=1 October 2009 |archive-url=https://web.archive.org/web/20091004235046/http://earthquakes.usgs.gov/eqcenter/recenteqsww/Quakes/us2009mfaf.php |archive-date=4 October 2009 |url-status=dead }} The second earthquake has been linked to dextral (right-lateral) movement on the Great Sumatran fault, which takes up the strike-slip component of the convergence between the two plates.
Effects
{{multiple image
| align = left
| image1 = Pariaman.jpg
| image2 = Ambacang hotel.jpg
| footer = A destroyed house in Padang Pariaman (left) and the 6-story Ambacang Hotel
}}
Tremors from the first earthquake were felt in the Indonesian capital, Jakarta, Malaysia and Singapore.{{cite news |title=More than 1,000 feared dead in Sumatra earthquake |newspaper=The Daily Telegraph |date=30 September 2009 |url=https://www.telegraph.co.uk/news/worldnews/asia/indonesia/6248303/More-than-1000-feared-dead-in-Sumatra-earthquake.html |access-date=1 October 2009 | location=London | first=Aislinn | last=Laing| archive-url= https://web.archive.org/web/20091003112123/http://www.telegraph.co.uk/news/worldnews/asia/indonesia/6248303/More-than-1000-feared-dead-in-Sumatra-earthquake.html| archive-date= 3 October 2009 | url-status= live}} The management of some high-rise buildings in Singapore evacuated their staff.{{cite web |url=http://www.channelnewsasia.com/stories/afp_asiapacific/view/1008365/1/.html |archive-url=https://archive.today/20091003093146/http://www.channelnewsasia.com/stories/afp_asiapacific/view/1008365/1/.html |url-status=dead |archive-date=3 October 2009 |title=Powerful 7.6-magnitude quake strikes Indonesia |date=30 September 2009 |publisher=Channel NewsAsia |access-date=30 September 2009}}
A tsunami watch was triggered and there was reports of house damage and fires.{{cite web |url=http://www.prh.noaa.gov/ptwc/messages/indian/2009/indian.2009.09.30.102622.txt |title=Official tsunami watch bulletin |date=30 September 2009 |website=National Oceanic and Atmospheric Administration |access-date=30 September 2009 |archive-url=https://web.archive.org/web/20091003102129/http://www.prh.noaa.gov/ptwc/messages/indian/2009/indian.2009.09.30.102622.txt |archive-date=3 October 2009 |url-status=live }}; {{cite news |url=http://thejakartaglobe.com/home/indonesias-sumatra-island-shaken-by-76-earthquake/332690 |title=Indonesia 7.6 Earthquake Triggers Tsunami Alert, Panic in Padang |date=30 September 2009 |newspaper=Jakarta Globe |access-date=30 September 2009 |archive-url=https://web.archive.org/web/20091003105507/http://thejakartaglobe.com/home/indonesias-sumatra-island-shaken-by-76-earthquake/332690 |archive-date=3 October 2009 |url-status=dead }} Hotels in Padang were destroyed, and communications to the city were disrupted.{{cite news|url=https://www.theguardian.com/world/2009/sep/30/earthquake-padang-sumatra-indonesia|title=Desperate hunt for the living as Sumatra quake toll mounts|last=Beaumont|first=Peter |date=30 September 2009|newspaper=The Guardian|access-date=30 September 2009 | location=London| archive-url= https://web.archive.org/web/20091003103303/http://www.guardian.co.uk/world/2009/sep/30/earthquake-padang-sumatra-indonesia| archive-date= 3 October 2009 | url-status= live}}
Local news channel Metro TV reported fires in Padang where residents had run onto the streets as the first quake hit. Teams of rescuers from nearby branches of the National Search and Rescue Agency were deployed to Padang.{{Citation needed|date=September 2019}} It was also reported that some water pipes in Padang were broken and there was flooding in the street.{{Cite news|url=https://www.theguardian.com/world/2009/sep/30/indonesia-earthquake-padang|title=Thousands trapped under rubble after powerful Indonesia earthquake|last=McCurry|first=Justin|date=30 September 2009|work=The Guardian|access-date=30 September 2019|issn=0261-3077}}{{Cite news|url=https://www.reuters.com/article/us-quake-indonesia-sb-idUSTRE58T29L20090930|title=Quake brings down houses on Indonesia's Sumatra|last1=Nathalia|first1=Telly|date=30 September 2009|agency=Reuters|access-date=30 September 2019|last2=Macfie|first2=Nick|editor-last=Miglani|editor-first=Sanjeev}} There were reports that at least two hospitals and several schools collapsed.{{cite news|url=http://www.latimes.com/news/nationworld/world/la-fg-indonesia-quake2-2009oct02,0,4141625.story |title=More than 777 dead in Indonesia quake, hundreds trapped beneath rubble |newspaper=Los Angeles Times |date=1 October 2009 |access-date=1 October 2009 |archive-url=https://web.archive.org/web/20091004235757/http://www.latimes.com/news/nationworld/world/la-fg-indonesia-quake2-2009oct02%2C0%2C4141625.story |archive-date=4 October 2009 |url-status=live }}
There were landslides and collateral debris flows in the hills surrounding Lake Maninjau. The landslide in Gunung Nan Tigo, Padang Pariaman district completely destroyed some villages and caused many fatalities. Landslides also forced some roads to be closed.{{cite web|url=http://mceer.buffalo.edu/publications/Reconnaissance/10-SP01/10-SP01.pdf |title=Archived copy |access-date=3 December 2010 |url-status=dead |archive-url=https://web.archive.org/web/20100707234559/https://mceer.buffalo.edu/publications/Reconnaissance/10-SP01/10-SP01.pdf |archive-date=7 July 2010 }}{{cite web|url=http://www.coe-dmha.org/reports/WestSumatraEarthquake09302009.pdf|title=Home|website=coe-dmha.org}}
Padang's Minangkabau International Airport suffered minor damage, with parts of the ceiling in the boarding area falling down.{{Cite web |url=http://www.gulfnews.com/world/Indonesia/10353542.html |title=Gulfnews: Indonesia's Padang airport closed due to quake |access-date=2 October 2009 |archive-date=4 October 2009 |archive-url=https://web.archive.org/web/20091004173846/http://www.gulfnews.com/world/Indonesia/10353542.html |url-status=dead }} The airport reopened on 1 October.{{cite web|url=http://www.antara.co.id/en/news/1254379555/padang-airport-reopened-for-commercial-flights |title = ANTARA News: Padang Airport reopened for commercial flights |access-date=2 October 2009 |url-status=dead |archive-url=https://web.archive.org/web/20091005011730/http://www.antara.co.id/en/news/1254379555/padang-airport-reopened-for-commercial-flights |archive-date=5 October 2009 }}
Response
File:Defense.gov News Photo 091009-N-9123L-112.jpg]]
Authorities announced that several disaster management teams were en route to Padang although it took several hours for them to reach more remote areas.{{cite web |url=http://www.csmonitor.com/2009/1001/p06s04-woap.html |title=Indonesia earthquake toll rises as survivors await relief |last=Montlake |first=Simon |work=The Christian Science Monitor |date=1 October 2009 |access-date=5 March 2019}} Rescue workers pulled dozens of survivors from the rubble and rushed them to Djamil Hospital. The hospital itself was overwhelmed with patients, and many patients were treated in tents set up outside the hospital. A man was trapped beneath a flattened hotel for 25 hours with a broken leg before rescue workers pulled him free. The Indonesian military deployed emergency response teams with earth moving equipment to help move rubble and recover trapped victims.{{cite news |url=https://nypost.com/2009/10/01/death-toll-in-indonesia-earthquake-rises-to-777/ |title=Death toll in Indonesia earthquake rises to 777 |date=1 October 2009 |agency=Associated Press|newspaper=New York Post| archive-url= https://web.archive.org/web/20091003022158/http://news.yahoo.com/s/ap/20091001/ap_on_re_as/as_indonesia_earthquake| archive-date= 3 October 2009 | url-status= dead}} Rescue workers and volunteers searched the rubble of a collapsed three-story concrete building, rescuing survivors and recovering bodies while parents of students trapped inside waited nearby.{{Cite news|url=https://www.nbcnews.com/id/wbna33085687|title=Death toll in Indonesia earthquake hits 531|date=1 October 2009|publisher=NBC News|access-date=30 September 2019|agency=Associated Press}} Indonesian villagers used their bare hands to sift through ruins and try to find survivors.{{Cite news|url=https://www.csmonitor.com/World/Asia-South-Central/2009/1004/p06s01-wosc.html|title=Indonesia earthquake: Rescue teams refocus on survivors|last=Montlake|first=Simon|date=4 October 2009|work=The Christian Science Monitor|access-date=30 September 2019|issn=0882-7729}} On 5 October, Indonesian rescue workers called off their search for trapped survivors and increased efforts to recover bodies, clear rubble, and provide aid to survivors.https://news.yahoo.com/s/ap/_on_re_as/as_indonesia_earthquake{{dead link|date=September 2016 |bot=InternetArchiveBot |fix-attempted=yes }} Indonesian authorities used helicopters to airdrop food and blankets into remote areas, and to bring the wounded from these areas to hospitals.{{cite news |url=https://www.nbcnews.com/id/wbna33172571 |publisher=NBC News |title=Indonesia calls off search for missing survivors |date=5 October 2009}}
World Vision, Oxfam, IFRC, Muslim Charity and Mercy Corps confirmed that they would fly their emergency response teams to the devastated Padang area for rapid assessment of the catastrophe.{{cite news |url=http://www.cnn.com/2009/WORLD/asiapcf/09/30/indonesia.earthquake/index.html |title=Officials: Indonesia quake toll could soar |date=30 September 2009 |publisher=CNN}} The Red Cross sought donations to help cover earthquake relief costs.{{cite web |url=https://american.redcross.org/site/Donation2?idb=1242664702&df_id=1094&1094.donation=form1&s_sbsrc=RCO_NewsArticle%20American%20Red%20Cross%201%20Oct%202009 |title=International Response Fund |date=1 October 2009 |publisher=American Red Cross |access-date=1 October 2009 }}{{Dead link|date=May 2019 |bot=InternetArchiveBot |fix-attempted=yes }} World Vision also airlifted 2,000 collapsible water containers and distributed them immediately to the area most affected by earthquake. Additionally World Vision launched US$1 million appeal for the relief effort.{{cite web |url=http://www.wvi.org/wvi/wviweb.nsf/maindocs/4484E4459395354488257643000452BD?opendocument |title=Indonesia: Padang devastated by aftershock, World Vision says 'water a major concern' |date=2 October 2009 |publisher=World Vision |access-date=2 October 2009 |archive-url=https://web.archive.org/web/20110927143900/http://www.wvi.org/wvi/wviweb.nsf/maindocs/4484E4459395354488257643000452BD?opendocument |archive-date=27 September 2011 |url-status=dead }}{{clear}}
;Countries that sent aid
Below is the table of countries that sent or pledged aid for Indonesia{{cite news |url=https://www.cbsnews.com/news/list-of-countries-that-have-sent-aid-to-indonesia/ |title=List of countries that have sent aid to Indonesia |date=2 October 2009 |agency=Associated Press |publisher=CBS News |access-date=5 March 2019}}
See also
References
External links
{{commons category}}
- [https://www.youtube.com/watch?v=vn83NjkFzhE Rescue efforts continue in Indonesia] – On Demand News
- [http://news.bbc.co.uk/2/hi/asia-pacific/8284208.stm Indonesia quake deaths pass 1,000] – BBC News
- {{EQ-isc-link|13801688}}
{{Earthquakes in 2009}}
{{Earthquakes in Indonesia}}
{{DEFAULTSORT:Sumatra Earthquakes, 2009}}
Category:Earthquakes in Sumatra
Category:Earthquake clusters, swarms, and sequences
Category:Earthquakes in Indonesia
Category:September 2009 in Indonesia