September 2007 Sumatra earthquakes
UTC time | |
---|---|
A: 2007-09-12 11:10:26 | |
B: 2007-09-12 23:49:03 | |
ISC event | |
A: 13203322 | |
B: 13203366 | |
USGS-ANSS | |
A: ComCat | |
B: ComCat | |
Local date | 12 September 2007 13 September 2007 |
Local time | |
A: 18:10 | |
B: 06:49 | |
Magnitude | |
A: 8.5 Mw | |
B: 7.9 Mw | |
Depth | 34.0 kilometres (21.1 mi) |
Epicenter | 4°24′25″S 101°30′07″E / 4.407°S 101.502°E 2°34′19″S 100°45′40″E / 2.572°S 100.761°E |
Areas affected | Indonesia Singapore Malaysia Thailand |
Max. intensity | VI (Strong) |
Tsunami | yes |
Casualties | 25 dead, 161 injured[1] |
The September 2007 Sumatra earthquakes were a series of
Timeline
The first earthquake occurred at 11:10:26
The second largest earthquake, 7.9
After further aftershocks above magnitude 5, a third large earthquake, 7.0 Mw, occurred at 03:35:28 UTC (10:35:28 local time) on 13 September.[4] It was centred about 10 km underground, at 2°07′48″S 99°37′37″E / 2.130°S 99.627°E, some 165 km south-southwest of Padang and 345 km west-northwest of Bengkulu. It is regarded as an aftershock of the two larger earthquakes.[4]
Aftershocks continued into 13 September and 14 September, with more earthquakes ranging up to magnitude 6.4.[5] Most of the aftershocks have been northwest of the original magnitude 8.4 earthquake. A 6.7 struck Southern Sumatra on Sept 20, 2007.
Tidal buoys[6] positioned in the Indian Ocean and other seismic tools have led scientists to issue a series of tsunami bulletins.[7]
Effects
The tremors of the 8.5 Mw earthquake lasted for several minutes. It caused buildings to sway in Jakarta, and some buildings were reported to have collapsed in the city of
Tremors were felt in neighbouring countries as far away as
Tsunami
Sea level readings indicated that a
Tsunami warnings were also issued in India and other countries around the Indian Ocean soon after the earthquake. The
Tectonic summary
According to the
The magnitude 7.9 earthquake was also a result of thrust faulting on the same plate boundary. It occurred about 225 km northwest of the magnitude 8.5 earthquake, at the northern end of the aftershock zone.[3]
The magnitude 8.5 earthquake was the most powerful earthquake of 2007 to date, more powerful than the two
According to data from the Japanese
See also
References
- ^ doi:10.1029/2007GL032661.)
{{cite journal}}
: CS1 maint: multiple names: authors list (link - ^ a b ISC (2022), ISC-GEM Global Instrumental Earthquake Catalogue (1904–2018), Version 9.1, International Seismological Centre
- ^ a b ANSS. "Sumatra 2007: M 7.9 - Kepulauan Mentawai region, Indonesia". Comprehensive Catalog. U.S. Geological Survey. Retrieved 3 October 2018.
- ^ a b ANSS. "Sumatra 2007: M 7.0 - Kepulauan Mentawai region, Indonesia". Comprehensive Catalog. U.S. Geological Survey. Retrieved 3 October 2018.
- USGS
- ^ DART Buoy Station 23401 - 600 NM West-Northwest of Phuket, Thailand
- ^ Message indian.2007.09.13.002807 Pacific Tsunami Warning Center, NWS, NWS PTWC
- ^ Eyewitnesses: Sumatra earthquake, BBC News
- ^ a b Powerful quake shakes Indonesia, BBC News
- ^ "Tsunami alert issued after Indonesia quake: US centre". Archived from the original on 2017-08-20. Retrieved 2007-09-12.
- ^ Event 2007hear: View Map Archived September 15, 2007, at the Wayback Machine
- ^ "Singapore buildings sway after strong quake hits Indonesia". Archived from the original on 2017-08-20. Retrieved 2007-09-12.
- ^ Map Archived October 4, 2007, at the Wayback Machine
- ^ a b "8.2 magnitude quake sparks tsunami warnings". Sun2Surf. 2007-09-13. Archived from the original on 2010-03-05. Retrieved 2007-09-13.
- ^ "Quake felt in Malaysia". The Star. 2007-09-13. Archived from the original on 2008-04-24. Retrieved 2007-09-13.
- ^ Powerful earthquake triggers tsunami in western Indonesia, The Jakarta Post
- ^ Six dead, dozens injured in Indonesian quakes, Agence France-Presse via ABS-CBN Corporation. Retrieved August 24, 2022.
- ^ Tsunami recorded at Cocos Island, Herald Sun
- ^ National Geophysical Data Center / World Data Service (NGDC/WDS), Global Historical Tsunami Database (Data Set), NOAA National Centers for Environmental Information
- CNN-IBN
- ^ Tsunami alert withdrawn. The Hindu
- ^ ANSS. "Sumatra 2007: M 8.4 - southern Sumatra, Indonesia". Comprehensive Catalog. U.S. Geological Survey. Retrieved 3 October 2018.
- ^ (in Japanese) Southern Sumatra Earthquake in 2007, coastal change, GSI Archived 2007-11-15 at the Wayback Machine
External links
4°26′17″S 101°22′01″E / 4.438°S 101.367°E
- USGS Earthquake Center 8.5 tracking report
- USGS Earthquake Center 7.9 tracking report
- Tsunami Information Statement #1, NOAA/NWS/West Coast and Alaska Tsunami Warning Center
- Tsunami bulletin number 003, Pacific Tsunami Warning Center/NOAA/NWS
This article incorporates public domain material from websites or documents of the United States Geological Survey.