Volume 33 (2023)
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 origin of orthogonal vein network in Paleocene-Eocene flysch south of Birjand, eastern Iran

Mohammad Amir Alimi

Volume 33, Issue 3 , August 2023, , Pages 111-122


  This paper presents the results of a field study aiming to describe and to interpret origin of the vein network in the south of Birjand. Adjacent to Birjand ophiolite in eastern Iran, the Paleocene-Eocene flysch facies was deposited in the Birjand foreland area concomitant with the Alpine orogeny (Laramide). ...  Read More

Investigating the stress regime in the Gorgan-plain, using inversion of earthquake focal mechanism solutions

Fereshteh Jafari-Hajati; Maryam Agh-Atabai; Majid Nemati; Ali Biglari-Fadafan

Volume 33, Issue 1 , February 2023, , Pages 69-86


  In this research, to understand the present-day tectonic situation of Gorgan-plain in the east of the South Caspian basin, the tectonic stress regime of this area and its adjacent areas was estimated using the inversion of the data of the earthquake focal mechanisms. For this aim, in addition to analyzing ...  Read More

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

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

Volume 28, Issue 110 , December 2018, , Pages 23-32


  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 ...  Read More

Love wave tomography of the Makran subduction zone from ambient seismic noise

M Abdetedal; Z.H Shomali; M.R Gheitanchi

Volume 26, Issue 102 , March 2017, , Pages 147-152


  The Makran zone in southeastern Iran and southern Pakistan is the result of subduction of oceanic crust of the Arabian Plate under the Eurasian Plate. From seismic behavior point of view, there is a distinct segmentation between the western and eastern parts of the subduction zone. The western part of ...  Read More

Reconnaissance of Subsurface Structures and Fractures of Aman Abad Plain in Southeast of Arak by Inverting Gravity Data

M Mirzaei; L Soheili; V Ebrahimzadeh Ardestani; A Teymorian Motlagh

Volume 25, Issue 97 , December 2016, , Pages 85-100


  The main objective of interpretation of acquired gravity data on the Earth's surface is to determine the contrasts in density or shape/dimension of mass anomalies. Interpretation of gravity data can be done through an inversion process. In this research, a block model has been considered for the subsurface ...  Read More

Moment Tensor Solution of the Central - Western Alborz (Iran) Earthquakes Based on Regional Data

S Ansari; F Yaminifard; M Tatar

Volume 24, Issue 95 , June 2015, , Pages 359-368


  In this study, 23 focal mechanisms were calculated by moment tensor inversion of small regionalـlocal earthquakes in the Western Alborz and surrounding areas using wave-form inversion method. Calculated reverse-fault focal mechanisms around the Khazar and Alborz Faults in the Central Alborz, considering ...  Read More

Using SIS Scheme for 1D Magnetotelluric Data Inversion

H Mardomi; B Oskooi

Volume 24, Issue 1393 , March 2015, , Pages 335-340


  During this project we tried to show high capability of the SIS scheme for 1D magnetotelluric (MT) sounding data inversion. The scheme transforms the nonlinear problem of estimating layer resistivities and thicknesses into a linear problem of estimating the coefficients of power series of the new response ...  Read More

2-D Non-Linear Inverse Modeling of Moghan Area Using Levenberg-Marquardt's Method

A. Nejati Kalate; V. Ebrahimzadeh Ardestani; E. Shahin; S. H. Motavalli Anbaran; Sh. Ghomi; E. Javan

Volume 19, Issue 74 , February 2010, , Pages 13-20


  Determination of the geometry of bedrock, by nonlinear inverse modeling of gravity data, is the aim of this paper. In this method, reliable geological structures can be obtained by minimum geology priori information. The usual practice of inverting gravity anomalies of two-dimensional bodies replaced ...  Read More

Application of Structural Attributes in Petroleum Exploration and Development of an Interference Belt

A. Arzani; S.A. Alavi; M. Pooladzadeh; A.R. Golalzadeh; Z. Mehdipoor

Volume 19, Issue 74 , February 2010, , Pages 51-56


  The area that will be discussed in this study is located between Zagros and Arabian structural zones in Iran in which full fold 3D seismic data has been acquired and interpreted using sophisticated techniques. This paper covers the role of structural sensitive seismic attributes including first and Second ...  Read More

Detecting Potential Seepage Paths in Bakhtyari Dam Site using Seismic Tomography

Y. Sharghi; F. Alinia; H. R. Siahkoohi

Volume 19, Issue 76 , January 2010, , Pages 71-78


  Seismic travel time tomography uses seismic waves to image velocity distribution inside the ground. This method has been widely applied to practical applications in many fields including earth sciences. In this method, first-arrival times of seismic waves due to artificial sources, observed at receivers ...  Read More

Analysis of Microtremor Array Measurements using Spatial Auto-correlation Method for Estimation of Vs Profile in South-East of Bam City

M. R. Ghayamghamian; A. Fereydouni

Volume 18, Issue 71 , January 2009, , Pages 137-142


  The shear wave velocity structure in Bam city is estimated in this paper. A double circle array observation of microtremors was conducted in south-east of Bam. Spatial Auto-correlation Coefficient (SPAC) method was utilized to determine phase velocity dispersion curve of Rayleigh wave in frequency range ...  Read More

Optimally Uncertainty Estimation for Linear Inversion

A. Gholami; M. Javaherian

Volume 16, Issue 64 , March 2007, , Pages 102-111


          In experimental sciences we often need to solve inverse problems. That is, we want to obtain information about the internal structure of a physical system from indirect noisy observations. Information about the errors in the observations is essential to solve ...  Read More