نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشگاه آزاد تهران شمال
2 گروه ژئوفیزیک، دانشکده علوم پایه، دانشگاه آزاد اسلامی، تهران شمال، ایران
3 گروه زمین شناسی، دانشکده علوم پایه، دانشگاه آزاد اسلامی، تهران شمال، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Green's empirical function method has been used to simulate the strong motion of the Damavand earthquake. One of the conventional methods of simulation to produce strong ground motion is the use of aftershocks and foreshocks of large earthquakes using the empirical Green's function method; As a result, the ground motion simulation algorithm based on Green's empirical function, presented by Hutchings and Wu (1990), has been used to simulate the Damavand earthquake waveform.
On 02/18/2019, an earthquake with a magnitude of 5 occurred in Damavand, located in Tehran province. In this study, with the aim of estimating the parameters of the source and the mode of fracture in this earthquake, the empirical Green's function method has been used to simulate the powerful movement of the earth. To simulate the main earthquake, a foreshock with a magnitude of 2.9 near the center of the main earthquake, as well as aftershocks with a magnitude of 3.9 and 4.1 recorded at the Masha and Rodhen accelerometer stations, have been considered as experimental Green's function. The length and width of the fracture in this earthquake are 2 and 3 km, respectively, in the direction of extension and slope. Calculations show that the direction, slope and tilt of the fault that caused the earthquake were 196, 76 and 156.5 degrees, respectively. The focal mechanism of this earthquake is of reverse type with strike-slip component, which is consistent with the mechanism of earthquakes in this area.
کلیدواژه‌ها [English]
)