NUMERICAL SIMULATION OF THE 28 NOVEMBER 1945 MAKRAN TSUNAMI AS A TOOL TO ASSESS TSUNAMI RISK IN SOUTHERN COASTS OF IRAN

سال انتشار: 1386
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 2,018

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شناسه ملی سند علمی:

SEE05_330

تاریخ نمایه سازی: 25 شهریور 1385

چکیده مقاله:

On 28 November 1945, the coasts of Pakistan, Iran, Oman and India were affected by tsunami waves generated by a submarine earthquake having magnitude of 8.1 with its epicenter located at 24.5 N 63.0 E. More than 4,000 people were killed and great destruction took place along the coasts of Pakistan, Iran, Oman and India. This study aims at giving a contribution to the assessment of tsunami risk in southern coasts of Iran using numerical modeling of the 1945 event. To model the generation phase of the tsunami a computer program has been developed based on Mansinha and Smylie (1971) equations. The generation model assumes a rectangular shape for the ruptured area and uses shear forces over the rapture surface. The propagation and runup of this tsunami has been simulated by a finite difference numerical model solving the shallow water equations. These equations have been discretized using the leap-frog scheme. Computed tsunami features such as travel times and run-up height distribution are given; which are useful in the evaluation of the tsunami hazard. Finally, model results have been compared with the observed runup values all along the affected coasts.

نویسندگان

Mohammad Heidarzadeh

PhD Candidate of Civil Engineering, College of Eng., University of Tehran

Moharram Pirooz

Assistant professor of Civil Engineering, College of Eng., University of Tehran

Nasser Zaker

Assistant professor, College of Environmental Eng., University of Tehran

Mohammad Mokhtari

Assistant professor, International Institute of Earthquake Engineering and Seismology

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