1918 Celebes Sea earthquake

Earthquake in the Philippines December 2022 December 2022 1918 Celebes Sea earthquake 1918-08-15 12:18:21 iscgem913230 913230 Mindanao#Philippines 1918 08 15 20:18 >3 minutes 8.3 Mw 20 km mi 0 on 5.538 123.994 inline,title X Yes Yes 52 left|thumb|250px|The Cotabato Trench in southern Mindanao and the Philippine Mobile Belt. Mindanao left 250 Earthquakes in Mindanao Near the Cotabato Trench, two of the largest 20th century Philippine earthquakes: the 1918 Celebes Sea earthquake (8.3 Mw) and the 1976 Moro Gulf earthquake (8.0 Mw). Also included is the recent 2002 Mindanao earthquake (7.5 Mw). The Moro Gulf, part of the Celebes Sea, is labeled for context. Mindanao 6.50 123.00 left Moro Gulf Mindanao 6.29 124.09 left 1976 Mindanao 5.538 123.994 left 1918 Mindanao 6.03 124.25 right 2002 The 1918 Celebes Sea earthquake occurred on August 15 at 12:18 UTC near the Moro Gulf coast of Mindanao.https://www.ngdc.noaa.gov/hazel/view/hazards/earthquake/event-more-info/3116 Significant Earthquake Information National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database. NOAA National Centers for Environmental Information Significant Earthquake Database 1972 June 28, 2024 10.7289/V5TD9V7K It had a magnitude of 8.3 on the moment magnitude scaleISC-GEM Global Instrumental Earthquake Catalogue (1900–2009) http://www.isc.ac.uk/iscgem/index.php ISC June 27, 2015 International Seismological Centre Version 2.0 and a maximum perceived intensity of X (Extreme) on the Mercalli intensity scale, making it the strongest earthquake in history to hit the Philippines. It triggered a tsunami of up to 7 m in height and the combined effects of the earthquake and tsunami led to the deaths of 52 people. Tectonic setting The southwestern part of Mindanao sits above a geologically young subduction zone, where the section of the Sunda plate that lies beneath the Celebes Sea is subducting beneath the Philippines Mobile Belt along the line of the Cotabato Trench. The presence of the Cotabato subduction zone was confirmed by observations from the 1976 Moro Gulf earthquake.Beck Susan L. Susan L. Beck Ruff Larry. J. The rupture process of the 1976 Mindanao Earthquake Journal of Geophysical Research: Solid Earth 1985 90 B8 6773–6782 10.1029/JB090iB08p06773 1985JGR....90.6773B Earthquake The earthquake had a magnitude of 8.3 on the moment magnitude scale, it had an estimated depth of 20 kilometers. The earthquake was 75 kilometers South southwest of Palimbang, Sultan Kudarat. A station at Butuan in northern Mindanao registered over 600 aftershocks before the end of August, with 250 recorded by the end of August 16.Major mag. 8.3 Earthquake – Celebes Sea, 143 km southwest of Koronadal, Philippines, on Thursday, Aug 15, 1918, at 12:18 pm (Universal Time time) https://www.volcanodiscovery.com/earthquakes/quake-info/2930304/mag8quake-Aug-15-18-Mindanao-Philippines.html 19 June 2024 volcanodiscovery.com The earthquake has been associated with rupture along the active east-dipping Cotabato Trench subduction zone beneath Mindanao.Stewart G.S. Cohn S.N. 1979 The 1976 August 16, Mindanao, Philippine earthquake (Ms = 7.8) – evidence for a subduction zone south of Mindanao Geophysical Journal of the Royal Astronomical Society 57 1 51–65 10.1111/j.1365-246X.1979.tb03771.x free 1979GeoJ...57...51S The epicenter is interpreted to be in the same part of the plate interface as the 1976 Moro Gulf event. The distribution of effects suggests that fault rupture extended for 200 km along the coast. The average slip is estimated to be 4.1 m.Okal E.A. Synolakis C.E. Kalligeris N. 2011 Tsunami Simulations for Regional Sources in the South China and Adjoining Seas Pure and Applied Geophysics 168 6–7 1153–1173 10.1007/s00024-010-0230-x 2011PApGe.168.1153O Tsunami This event in the southern Philippines triggered a large tsunami, with a maximum run-up of 7.2 m,https://www.ngdc.noaa.gov/hazel/view/hazards/tsunami/event-more-info/1456 Tsunami Event Information National Geophysical Data Center / World Data Service: NCEI/WDS Global Historical Tsunami Database. NOAA National Centers for Environmental Information. NOAA National Centers for Environmental Information 10.7289/V5PN93H7 June 28, 2024 which affected the coasts of the Celebes Sea, causing widespread damage. The combined effects of the earthquake and the tsunami caused 52 casualties. With some sources stating that the tsunami alone caused up to 1,000 casualties.Andrew 2022-12-11 The Philippines vs The Pacific Ring of Fire https://nakedexpat.com/blog/the-philippines-vs-the-pacific-ring-of-fire/ 2024-06-19 Naked Expat en-GBCited source does not cite its source for the quoted death toll and has nothing to suggest that it's reliable June 2024 Damage The earthquake caused widespread damage in the coastal parts of southwestern Mindanao, with all houses destroyed around Sarangani Bay. The effects of the earthquake were compounded by the tsunami that particularly affected 150 km of coast between Lebak and Glan. A major landslide was also reported from one of the mountains around Saragani Bay. The number of casualties is uncertain as there is no definitive total. Several sources refer to 52 deaths. The estimated losses were up to 5-25 million dollars. There was damage to a stone bridge at Paleleh, Central Sulawesi. See also 1897 Mindanao earthquakes 1976 Moro Gulf earthquake List of earthquakes in 1918 List of earthquakes in the Philippines References M 8.3 – 75 km SSW of Malisbeng, Philippines https://earthquake.usgs.gov/earthquakes/eventpage/iscgem913230#executive United States Geological Survey August 27, 2017 August 15, 1918 External links 913230 Category:Earthquakes in the Philippines Category:1918 earthquakes Category:August 1918 in Asia Category:History of Sarangani Category:History of Sultan Kudarat Category:1910s tsunamis Category:Megathrust earthquakes in the Philippines