Rupture directivity effect of the 07 May 2020 Damavand-Mosha Mw 5.0 earthquak
عنوان دوره: بیستمین کنفرانس ژئوفیزیک ایران
نویسندگان
1موسسه ژئوفیزیک/دانشجو/دانشگاه تهران/تهران/ایران
2استاد گروه زلزله‌شناسی، مؤسسه ژئوفیزیک، دانشگاه تهران، تهران، ایران
چکیده
Rupture directivity effects that cause spatial variations in ground motion amplitude around faults, is a parameter of seismic source that plays a significant role in generation of ground motions (and damage of structures, if the earthquake is large enough). Damavand-Mosha earthquake of 2020/05/07, Mw 5.0, occurred on the Mosha fault. To investigate rupture directivity of the mainshock we analyzed accelerograms recorded by the BHRC network. Larger amplitudes accelerations recorded in the stations west of the earthquake epicenter suggest mostly westward unilateral rupture propagation along the Mosha fault. This can be important in terms of seismic hazard for the Tehran megacit
کلیدواژه ها
 
Title
Rupture directivity effect of the 07 May 2020 Damavand-Mosha Mw 5.0 earthquak
Authors
milad kaboli, saeid rahimzadeh, Noorbakhsh Mirzaei
Abstract
Rupture directivity effects that cause spatial variations in ground motion amplitude around faults, is a parameter of seismic source that plays a significant role in generation of ground motions (and damage of structures, if the earthquake is large enough). Damavand-Mosha earthquake of 2020/05/07, Mw 5.0, occurred on the Mosha fault. To investigate rupture directivity of the mainshock we analyzed accelerograms recorded by the BHRC network. Larger amplitudes accelerations recorded in the stations west of the earthquake epicenter suggest mostly westward unilateral rupture propagation along the Mosha fault. This can be important in terms of seismic hazard for the Tehran megacity
Keywords
Rupture directivity, Mosha fault, Strong ground motion, Damavand-Mosha earthquake, Tehran