The Movement Potential Evaluation of the Mosha Fault  (from the West of Firoozkuh to the Shahrestanak)

Bahiraee, S; Arian, M; Qorashi, M; Solgi, A

doi:10.22071/gsj.2015.43387

The Movement Potential Evaluation of the Mosha Fault (from the West of Firoozkuh to the Shahrestanak)

Document Type : Original Research Paper

Authors

S Bahiraee ¹

M Arian ²

M Qorashi ³

A Solgi ⁴

¹ Ph.D. Student, Department of Geology, Islamic Azad University, Science and Research Branch, Tehran, Iran

² Associate Professor, Department of Geology, Islamic Azad University, Science and Research Branch, Tehran, Iran

³ Associate Professor, Research Institiute for Earth Sciences (RIES), Geological Survey of Iran, Tehran, Iran

⁴ Assistant Professor, Department of Geology, Islamic Azad University, Science and Research Branch, Tehran, Iran

10.22071/gsj.2015.43387

Abstract

The Mosha fault is the most important fault structures in the south of Central Alborz. According to the activity of this fault, confirmation of the morphological evidences, and large historical earthquakes occurred by its activity, also proximity to Tehran metropolitan, the study of this area is very important. Therefore, as a parameter, evaluation of the fault movement potential helps us in seismological study of the area. In this paper, we have used the model presented by Lee et al. (1997) to evaluate movement potential. The model is based on the relationship between fault geometrical characteristics and regional tectonic stress field. To use the equations of this model, structural data of 13 stations along the Mosha fault were collected to identify the position of the principal axes of stress. Then, we obtained the direction of maximum principal stress of the Mosha fault and also for each section separately by using Inversion method and they were placed in equations.

Keywords

Mosha Fault

Movement potential

Regional tectonic stress field