Estimation of Tectonic Slip Rate of Northern Band of Tehran by using GPS

Djamour, Yahya; Hashemi Tabatabaei, S.; Sedighi, M.; Nankali, H. R.

doi:10.22071/gsj.2012.54547

Document Type : Original Research Paper

Authors

¹ Geomatics College National Cartographic Center of I.R. Iran Meraj st., Azadi sq., Tehran, IRAN, P.Box: 13185-1684

² Building and Housing Research Center, Tehran, Iran

³ Geodetic Departments, National Cartographic Center, Tehran, Iran

https://doi.org/10.22071/gsj.2012.54547

Abstract

In previous decades, using traditional geodetic observations such as distance and angle measurements was prevalent in the earth surface displacement studies. After accessing to satellite positioning systems with a high precision ability such as GPS, we encountered to an upheaval in the earth surface displacement studies. Indeed using temporal variations of the earth surface deformation, the seismotectonics of the area can be distinguished. Deformation modeling of the area can be accessed using the analyzing of repeated geodetic measurements. In Tehran area the earthquake studies is an important task and in this paper we are going to use GPS measurements for this field. Here 35 GPS stations cover whole of Tehran which consists North Tehran fault. These stations were occupied at least 2 annual epochs and some of them were measured more than 4 times. After processing the acquired data and analyzing the results, the velocity field was obtained. Deformation analysis of the velocity field shows a small left lateral movement about 0.5-2 mm/year and more or less the same value for shortening in the northern band Tehran area. This value is not constant along the northern band and it seems the eastern part where we reach the Mosha fault the deformation is more significant than western part. The observed rate is equal to a total movement of ~5km during 2.5-10 my which is consistent with geological studies carried out in this area.

Keywords

20.1001.1.10237429.1391.21.83.23.4

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Scientific Quarterly Journal of Geosciences

Estimation of Tectonic Slip Rate of Northern Band of Tehran by using GPS

References

References

Volume 21, Issue 83
December 2012
Pages 211-218

Estimation of Tectonic Slip Rate of Northern Band of Tehran by using GPS

References

References

Volume 21, Issue 83December 2012Pages 211-218

Volume 21, Issue 83
December 2012
Pages 211-218