Volume 32 (2022)
Volume 31 (2021)
Volume 30 (2020)
Volume 29 (2020)
Volume 28 (2019)
Volume 27 (2018)
Volume 26 (2017)
Volume 25 (2016)
Volume 24 (2015)
Volume 23 (2014)
Volume 22 (2013)
Volume 21 (2012)
Volume 20 (2011)
Volume 19 (2010)
Volume 18 (2009)
Volume 17 (2008)
Volume 16 (2007)
The Feasibility of Replacing Precise Levelling with GPS In Iran

H. Mahdizadeh; Y. Djamour

Volume 27, Issue 107 , June 2018, , Pages 185-192


  Today, with the use of Global Positioning System (GPS), it is possible to determine the geodetic height (relative to a Reference Ellipsoid) in easy mode with less time and cost. Despite of some advantages for leveling with GPS (GPS/Levelling) relative to traditional leveling, there is an important limitation ...  Read More

Modeling the earthquake cycle of the North Tabriz fault by using GPS data

M Talebian; M Shahpasand-Zadeh; Y jamour; M.R Sepahvand; A Arabpour

Volume 25, Issue 99 , June 2016, , Pages 169-178


  Determination of inter-seismic deformations such as fault slip-rate can usually be achieved by using geodetic observations, earthquake geology and paleo-seismology, as well as mechanical, empirical and numerical modeling. In these models, combination of the fault seismic parameters and the GPS data can ...  Read More

Estimation of Geodetic Virtual Velocity Based On Back Propagation Artificial Neural Networks (Case Study: NW Iran)

o Memarian Sorkhabi; Y Djamour

Volume 24, Issue 95 , June 2015, , Pages 69-76


  In order to study the crustal movements in Iran, establishment of several campaign GPS networks in 1998 seriously initiated geodynamical activities. After that in 2005, a network of ~120 permanent GPS stations named Iranian Permanent GPS Network (IPGN) has been installed to complete the campaign GPS ...  Read More

Coseismic Displacement of the Earth Crust Using Permanent GPS Stations in Ahar - Varzeqan Earthquake 2012

E Bekri; HR Nankali; Z Rahimi

Volume 24, Issue 95 , June 2015, , Pages 405-110


  In the 11th August 2012 two Earthquakes trembled Azarbayjan that their scales were 6 Mw and 6.2 Mw. The locking depth of these two earthquakes is about 10 km, the epicenter of the first one is 38.55 N and 46.87 E, and the second one is 38.87 N and 46.87 E. In this research displacement of the earth crust ...  Read More

Time Series Analysis of Hashtgerd Subsidence Using Radar Interferometry and Global Positioning System

P. Haghighatmehr; M. J. Valadanzouj; R. Tajik; S. Jabari; M. R. Sahebi; R. Eslami; M. Ganjiyan; M. Dehghani

Volume 22, Issue 85 , December 2013, , Pages 105-114


  A large area in Hashtgerd plain, in southwest of Tehran, is subject to the land subsidence induced by overexploitation of groundwater. In this paper, in order to study the subsidence SAR interferometry (InSAR) and global positioning system (GPS) are used. The small baseline subset (SBAS) algorithm is ...  Read More

Reducing Atmospheric Water Vapor Effects on the Interferogrametric SAR Products using MERIS-FR and GPS (Case Study: Mashhad subsidence)

S. Adham Khiabani; M. R. Mobasheri; M. J. Valadanzoej; M. Dehghani

Volume 21, Issue 83 , December 2012, , Pages 123-128


  SAR interferometry has shown its abilities in measuring the surface deformation in various applications. Atmospheric signals as an important factor affecting the interferometric measurements have temporally uncorrelated and complicated behavior. In this paper, a model based on the error source is presented ...  Read More

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

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

Volume 21, Issue 83 , December 2012, , Pages 211-218


  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 ...  Read More

Position Error Propagation of Reference Stations in Relative Positioning Using GNSS Phase Double Difference Observations

Yahya Djamour

Volume 20, Issue 80 , January 2011, , Pages 149-154


  Today, the best coordinates of stations on the ground are obtained by using Global Navigation Satellite Systems (GNSS) such as Global Positioning System (GPS). There are many error sources affecting the GNSS observations that limit the required accuracies. But differential positioning methods, like double ...  Read More