Micro-seismicity and seismotectonics of the South Caspian Lowlands, NE Iran

This paper is concerned with the microseismicity and seismotectonics of the eastern South Caspian Sea region, where the East Alborz mountains descend to meet the South Caspian Lowlands of NE Iran. To better understand the present-day tectonics and seismicity of this region, which includes the cities...

Full description

Saved in:
Bibliographic Details
Published in:Geophysical journal international 2013-03, Vol.193 (3), p.1053-1070
Main Authors: Nemati, M., Hollingsworth, J., Bolourchi, M.J., Zhan, Z., Talebian, M.
Format: Article
Language:English
Subjects:
Earth Sciences
Sciences of the Universe
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper is concerned with the microseismicity and seismotectonics of the eastern South Caspian Sea region, where the East Alborz mountains descend to meet the South Caspian Lowlands of NE Iran. To better understand the present-day tectonics and seismicity of this region, which includes the cities of Gorgan and Gonbad-e-Qabus (combined population 500 000), we installed a temporary local seismic network across the area for 6 months between 2009 and 2010. We analysed the seismicity and focal mechanisms together with data from the permanent networks of the Institute of Geophysics, University of Tehran (IGUT) and the International Institute of Earthquake Engineering and Seismology (IIEES), based in Tehran. Microseismicity is focused primarily on the Shahrud fault system, which bounds the east Alborz range to the south. Relatively few earthquakes are associated with the Khazar thrust fault, which bounds the north side of the range. A cluster of shallow microseismicity (
ISSN:0956-540X
1365-246X
DOI:10.1093/gji/ggs114