![]() A tsunami warning was issued15 min after the earthquake with expected tsunami amplitudes above 0.5 m along the southern coast of Turkey. The largest wave height was 17 cm, recorded at Gazimagusa on the island of Cypress.Īs a Tsunami Service Provider in the UNESCO IOC Tsunami Warning System, Boğaziçi University’s Kandilli Observatory and Earthquake Research Institute (KOERI) issued four tsunami messages according to the decision matrix based on earthquake magnitude and location. At Iskenderun, on the far southeast coast of Turkey, the first wave arrived 25 minutes after the earthquake, with a maximum wave height of 14 cm arriving at 8 minutes later. Water height was measured at four tide gauge stations in the Eastern Mediterranean after the earthquake. Common around the Pacific’s “Ring of Fire” and other oceanic basins with high seismic and volcanic activity, they can cause enormous tsunamis.ĭespite being 90 km from the ocean on a transform fault, the Mw 7.8 earthquake did result in a tsunami. Subduction zone earthquakes occur where a dense oceanic plate is descending beneath another plate, often under hundreds to thousands of meters of seawater. Unlike most earthquakes that cause tsunamis, the Kahramanmaras sequence occurred in an area of transform faults where continental plates are moving alongside each other, rather than in a subduction zone. The death toll in from the earthquake in Turkey and Syria is estimated at approximately 55,000 people, with thousands more injured and over 2.5 million left homeless. The combination of two major earthquakes with numerous aftershocks rupturing a large length of fault lines resulted in extensive damage, made worse by the fault system’s location beneath densely populated areas. (The finite fault model includes analysis of both teleseismic and regional seismic and geodetic observations, strong-motion accelerometers, and GNSS (GPS) satellite systems.) Ruptures extending all the way to the surface caused ground displacements of 2-8 meters along approximately 200 km of the fault line. Preliminary USGS finite fault modeling indicates 3-12 meters of slip along approximately 300 km of the fault. View a USGS animation of the 2023 Kahramanmaraş earthquake sequence (initial ruptures and aftershocks) over the 2-week period from February 6-20: The Mw 7.5 earthquake on the Sürgü fault segment just to the north was likely triggered by stress changes in the crust due to the earlier earthquake and aftershocks it ruptured over a distance of 100 km. Now known as the Kahramanmaraş Earthquake Sequence, it ruptured about 350 km of the Dead Sea and East Anatolian fault lines. Occurred where the Dead Sea Fault between the African and Arabian plates transitions to the East Anatolian Fault between the Arabian plate and Anatolian block. The Mw 7.8 earthquake that initiated the event The region is characterized by a complex system of faults and deformation: the Hatay Triple Junction, a meeting of the narrow tongue of the African Plate on the west, the Arabian Plate to the southeast, and the Anatolian Block of the Eurasian Plate to the north. The earthquake was followed by many aftershocks, as well as another major Mw 7.5 earthquake 90 km to the north about 9 hours later. ![]() On February 6, 2023, at 4:17 local time, a shallow Mw 7.8 earthquake occurred in southern Turkey, centered about 40 km south of Kahramanmaraş, a metropolitan area of around 1 million residents not far from the border with Syria. (Arabic, Bahasa, English, French, Spanish).īOOKLET: Remembering the 1945 Makran Tsunami Tsunami Glossary - Defines technical tsunami terms. VIDEO: Papua New Guinea Earthquakes and Tsunamis VIDEO: Izmit Bay, Turkey Earthquake and Tsunami VIDEO: Samoa Islands Earthquake and Tsunami - Effects in Tonga PTWS 50th Book - Documenting the Pacific Tsunami Warning System (1965-2015): A Half-Century of Protecting the Pacific. ![]() VIDEO: 27 February 2010 South-Central Chile Earthquake and Tsunami VIDEO: 2004 Northern Sumatra, Indonesia Earthquake and Tsunami VIDEO: Samoa Islands Earthquake and Tsunami - Effects in American SamoaīOOKLET: Where the First Waves Arrive in Minutes - Lessons from eyewitness accounts of the tsunamis in 20. VIDEO: 11 March 2011 Great East Japan Earthquake and Tsunami Hawai'i Historical Tsunami Effects (1812-2022) Poster If you feel, see, or hear a tsunami, evacuate quickly to high ground. Tsunami Awareness Poster - English, Spanish, Chinese, Japanese, Korean, Portuguese, Singalese and French. ![]() Global Hazard Maps - Tsunami sources, significant earthquakes and significant volcanic eruptions map posters. ![]()
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