سال انتشار: ۱۳۸۶

محل انتشار: پنجمین کنفرانس بین المللی زلزله شناسی و مهندسی زلزله

تعداد صفحات: ۸

نویسنده(ها):

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

چکیده:

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.