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2010 Mindanao earthquakes
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Series of deep focus earthquakes affecting Mindanao, Philippines
2010 Mindanao earthquakes yes triplet 2010-07-23 22:08:11 15008002 usp000hgmd wc 7.3 yMoro Gulf 2010a usp000hgmd M 7.3 – Moro Gulf, Mindanao, Philippinesb 6.4 yEHB 15008002 2010-07-23 22:51:12 17178792 usp000hgmh wc 7.5 yMoro Gulf 2010b usp000hgmh M 7.6 – Moro Gulf, Mindanao, Philippines w 7.7 y, b 6.8 yEHB 17178792 2010-07-23 23:15:08 15640291 usp000hgmq wc 7.5 yMoro Gulf 2010c usp000hgmq M 7.5 – Moro Gulf, Mindanao, Philippines w 7.4 y, b 6.8 yEHB 15640291 15009694 usp000hgnj wc 6.6Moro Gulf 2010d usp000hgnj M 6.6 – Moro Gulf, Mindanao, Philippines b 6.0 yEHB 15009694 600183837 usp000hh3f wc 6.6Moro Gulf 2010e usp000hh3f M 6.6 – Moro Gulf, Mindanao, Philippines D: 2010-07-24 05:35:01
E: 2010-07-29 07:31:56 A: 610 kmEHB 15008002B: 585 kmC: 634 kmEHB 15640291D: 565 kmEHB 15009694E: 618 kmMoro Gulf 2010e July 24, 2010 6.497 123.480 region:PH_type:event inline,title Moro Gulf, Philippines 4 MMI 3
The 2010 Mindanao earthquakes occurred in the southern Philippines in the Moro Gulf. This was a complex sequence of events including three main events (a triplet earthquake) of w y magnitude 7.3 or greater on the 23rd of July, and two significant aftershocks of magnitude 6.6 on the 24th and 29th. All of these were deep focus earthquakes, at depths from 565 km mi on to 634 km mi on. This resulted in minimal, but very widespread shaking at the surface, with a maximum intensity of IV (Moderately strong) on the PEIS scale; consequently there were no reports of casualties or damage.Annual Report 2010 https://www.phivolcs.dost.gov.ph/index.php/publications/annual-report Philippine Institute of Volcanology and Seismology 25 May 2020
Tectonic summary
The southern part of the Philippines lies above the complex collisional zone between the Philippine Sea plate and the Sunda plate. The convergence between these two plates of between 6–11 cm per year is accommodated by a series of smaller plates. One of these, the Molucca Sea plate, is currently being subducted beneath both the Philippine Sea plate and the Sangihe microplate, causing it to have an inverted U-shape seismic zone. The earthquakes were caused by the continuing distortion of the Molucca Sea plate.https://earthquake.usgs.gov/product/poster/usp000hgmh/us/1538164574069/poster.pdf M7.3, 7.6, 7.4 Moro Gulf, Mindanao, Philippines Earthquakes of 23 July 2010 United States Geological Survey 26 July 2010 30 April 2012 These three quakes of similar magnitude occurring in such close proximity of each other location-wise and time-wise can be regarded as an example of a triplet earthquake.
Areas affected
These earthquakes occurred in Moro Gulf, off the island of Mindanao. The w y 7.6 earthquake were felt in Philippines, Taiwan, and Malaysia. The w 7.4 earthquake were felt in Philippines, Brunei, Malaysia, and Indonesia.
See also
List of earthquakes in 2010
List of earthquakes in the Philippines
References
Four earthquakes hit the Philippines in quick succession
External links
17178792
Mindanao Earthquakes, 2010
Mindanao earthquakes, 2010
Category:2010 in the Philippines
Category:July 2010 in the Philippines
Category:Earthquakes in the Philippines
Category:Earthquake clusters, swarms, and sequences