Calculation the maximum horizontal stress and strain field  in around of Zendan- Minab- Palami fault system.

Ghorbani Rostam, Gh.; Pakzad, M. Pakzad; Mirzaei, N.

doi:10.22071/gsj.2019.84243

Document Type : Original Research Paper

Authors

¹ Assistant Professor, Department of Basic Sciences, Islamic Azad University, Science and Research Branch, Teheran, Iran

² Assistant Professor, Institute of Geophysics, University of Tehran, Tehran, Iran

³ Associate Professor, Institute of Geophysics, University of Tehran, Tehran, Iran

https://doi.org/10.22071/gsj.2019.84243

Abstract

There are two different seismotectonic zones in around of the Zendan- Minab- Palami (ZMP) fault system and the Oman Line, in south of Iran (Makran subduction zone in the east and Zagros collision zone in the west), which led to the complexity of this region. Since studying the stress field is important for accurate perception from elastic features of environment, surveying the exerted the tectonic stresses to the tectonics plates and their magnitude, and description the geodynamic of this region, in this study considerd to assessment of stress field and also, maximum horizontal stress (S_H) in around of ZMP fault system. To receive this purpose, amount and direction of stress is calculated by iterative joint inversion of earthquake focal mechanism. From east to west of ZMP fault system, with transition from Makran subduction to Zagros collision, direction of S_H is reduced from 5.09º in east to 0.9º. To surveying the strain field, we used Global Positioning System (GPS) data. Maximum variance between velocity vector and direction of S_H is determined in Bandar-Abbas (BABS) station, that located in adjacent of ZMP fault system. The friction coefficients which obtained in this study show that friction in Makran zone is more than Zagros zone.

Keywords

20.1001.1.10237429.1397.28.110.5.5

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Scientific Quarterly Journal of Geosciences

Calculation the maximum horizontal stress and strain field in around of Zendan- Minab- Palami fault system.

References

References

Talebian, M. and Jackson, J., 2003- A reappraisal of earthquake focal mechanisms and active shortening in the Zagros mountains of Iran, Geophysical Journal International 156, 506-526.

Volume 28, Issue 110
December 2018
Pages 23-32

Calculation the maximum horizontal stress and strain field in around of Zendan- Minab- Palami fault system.

References

References

Talebian, M. and Jackson, J., 2003- A reappraisal of earthquake focal mechanisms and active shortening in the Zagros mountains of Iran, Geophysical Journal International 156, 506-526.

Volume 28, Issue 110December 2018Pages 23-32

Volume 28, Issue 110
December 2018
Pages 23-32