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Evaluation of tsunami wave energy generated by earthquakes in the Makran subduction zone
Univ Tehran, Inst Geophys, Tehran, Iran.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics. Univ Tehran, Inst Geophys, Tehran, Iran.
Univ Grenoble Alpes, Univ Savoie Mt Blanc, CNRS, LAMA, F-73000 Chambery, France;Univ Savoie Mt Blanc, LAMA UMR CNRS 5127, Campus Sci, F-73376 Le Bourget Du Lac, France.
Res Inst Petr Ind, Tehran, Iran.
2018 (English)In: Ocean Engineering, ISSN 0029-8018, E-ISSN 1873-5258, Vol. 165, p. 131-139Article in journal (Refereed) Published
Abstract [en]

The MAKRAN subduction zone, an approximate 1000 km section of the EURASIAN-ARABIAN plate, is located offshore of SOUTHERN IRAN and PAKISTAN. In 1945, the MAKRAN subduction zone (MSZ) generated a tsunamigenic earthquake with a magnitude of M-w 8.1. The region has also experienced large historical earthquakes but the data regarding these events are poorly documented. Therefore, the need to investigate tsunamis in MAKRAN must be taken into serious consideration. Using hydrodynamic numerical simulation, we evaluate the tsunami wave energy generated by bottom motion for a tsunamigenic source model distributed along the full length of the MAKRAN subduction zone. The whole rupture of the plate boundary is divided into 20 segments with width of the order of 200 km and a co-seismic slip of 10 m but with various lengths. Exchanges between kinetic and potential components of tsunami wave energy are shown. The total tsunami wave energy displays only 0.33 % of the seismic energy released from the earthquake source. As a result, for every increase in magnitude by one unit, the associated tsunami wave energy becomes about 10(3) times greater.

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2018. Vol. 165, p. 131-139
Keywords [en]
Tsunami wave, Wave energy, Co-seismic displacement, Tsunami modeling, Makran region
National Category
Oceanography, Hydrology and Water Resources
Identifiers
URN: urn:nbn:se:uu:diva-367404DOI: 10.1016/j.oceaneng.2018.07.027ISI: 000446287400011OAI: oai:DiVA.org:uu-367404DiVA, id: diva2:1267666
Available from: 2018-12-03 Created: 2018-12-03 Last updated: 2018-12-03Bibliographically approved

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Shomali, Zaher Hossein

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