Meysam Mahmoodabadi

Meysam Mahmoodabadi
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Meysam verified their affiliation via an institutional email.
International Institute of Earthquake Engineering and Seismology | iiees · Seismological Research Center

PhD

About

24
Publications
7,739
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133
Citations
Introduction
Skills and Expertise
Education
March 2017 - April 2018
Goethe University Frankfurt
Field of study
  • Seismology
October 2013 - October 2018
October 2010 - October 2013

Publications

Publications (24)
Article
Full-text available
We applied a non-linear teleseismic tomography algorithm to explore the 3D structure of the upper mantle beneath the Arabia-Eurasia continental collision zone in western Iran. An unprecedented dataset consisting of 32738 teleseismic P-wave relative arrival time residuals from 129 permanent and temporary seismic stations was inverted for seismic ima...
Article
Full-text available
Previous investigation of seismic anisotropy indicates the presence of a simple mantle flow regime beneath the Turkish-Anatolian Plateau and Arabian Plate. Numerical modeling suggests that this simple flow is a component of a large-scale global mantle flow associated with the African superplume, which plays a key role in the geodynamic framework of...
Article
The evolution of the Eastern Iranian Ranges (EIR) dates back to the Late Cretaceous, coinciding with the closure of the Neotethys and the accretion of the Lut Block to Eurasia. However, controversy remains regarding its orogenic processes due to limited knowledge of the lithospheric structure. To gain a better understanding of the tectonic processe...
Article
Full-text available
The contribution of crustal anisotropy to the observation of SKS splitting parameters is often assumed to be negligible. Based on synthetic models, we show that the impact of crustal anisotropy on the SKS splitting parameters can be significant even in the case of moderate to weak anisotropy within the crust. In addition, real-data examples reveal...
Article
This paper, benefitting from seismic studies, investigates the lithospheric and upper mantle dynamics of eastern Iran, shedding light on the tectonic evolution of the Sistan mountain ranges from the Cretaceous period to the present. Historically, due to fewer seismic studies focusing on this area, the mountain ranges were only examined from a geolo...
Conference Paper
Full-text available
This research undertakes a detailed exploration of microseismic activity along the northern stretch of the Main Recent Fault (MRF) within the Zagros region, bracketed by the Main Zagros Reverse Fault (MZRF) and the High Zagros Fault (HZF), with a particular concentration on the Ardal Fault segment. We deployed a seven-station seismic network tasked...
Conference Paper
Full-text available
This paper presents an integrated seismic study of the Eastern Iranian Ranges (EIR), examining the lithospheric and mantle dynamics since the region's formation in the Late Cretaceous. Through analysis of receiver function (RF) waveforms and inversion with Rayleigh wave velocity data, we unveil west-dipping lithospheric structures and a distinctive...
Conference Paper
A comprehensive and high-resolution seismicity analysis is presented by integrating data from all permanent and temporary seismic networks in the South-Central Alborz region. The dataset comprises more than 25K local earthquakes, along with 43 high quality focal mechanisms. We evaluated the performance of four location programs: Hypo71, Hypoellipse...
Article
The Eastern Iranian Mountain Ranges (EIR) emerged as a consequence of the Late Cretaceous collision between the Afghan and Lut blocks. However, the response of the uppermost mantle to this collision remains enigmatic. Additionally, although petrological evidence suggests that post-collisional delamination is possible, it has not been conclusively i...
Article
The collision between Arabia and Eurasia has had a significant impact on the Iranian plateau, making it a prime location for investigating crustal deformation. The Neotethys Ocean closure and subsequent collision during the Cenozoic era led to extensive deformation in the northern part of the Iranian plateau, in particular development of the Alborz...
Article
Full-text available
Accurate seismic source location is a critical endeavor in seismology, essential for precisely determining the origin of seismic events. Various methods are available for pinpointing seismic sources, each exhibiting varying degrees of accuracy and reliability. In this study, our objective is to assess the influence of seismic phase weighting on ear...
Article
To investigate the crustal structure of the northeast of Lut block and Eastern Iranian Ranges, we deployed 31 seismic stations along a 230 km profile for a period of approximately 9 months. Using the migration of P-wave receiver functions, we analyzed changes in the Moho depth along this profile. Our results indicate that the boundary between the c...
Conference Paper
The continental collision between the Afghan and Lut blocks has led to vast deformations with a northwest trend in eastern Iran. The radial receiver functions obtained at 11 stations in this region exhibit strong P to S conversions. We analyze crustal seismic anisotropy with the use of arrival time variations (cosine moveout) of converted shear pha...
Conference Paper
Full-text available
In this study, we used the records of teleseismic earthquakes from a dense passive array of 36 seismometers to investigate the lithospheric and uppermost mantle structures beneath the Sistan suture zone. Teleseismic data from 240 events with high signal-to-noise ratios were recorded during the nine-month deployment period of the array, from which 3...
Conference Paper
Full-text available
This study concerns crustal anisotropy at 16 permanent seismic stations to investigate preferentially aligned cracks or structures and their relation to the stress-state in the South Central Alborz (northern Iran). We consider plunging anisotropy and dipping interfaces of multiple layers using harmonic functions to correct the arrival time variatio...
Conference Paper
Full-text available
We used more than one decade of core-refracted teleseismic shear (SKS) waveforms recorded atmore than 160 broadband seismic stations across the Iranian plateau and Zagros to investigateseismic anisotropy beneath the region. Splitting analysis of SKS waveforms provides two mainparameters, i.e., fast polarization direction and split delay time, which...
Conference Paper
Full-text available
One of the youngest orogenic belts, the Zagros orogeny in the northern margin of the Arabian plate is formed during the Arabia-Eurasia collision. Despite a number of studies, the lithospheric structure of the Zagros and its deformation during the continental collision are less studied. We use seismic data from 44 seismic stations of Zagros03, a den...
Conference Paper
Full-text available
Study of collision zones can provide insight into the dynamic processes involved in the formation and evolution of the orogenic belts. Many topics are under debate about the dynamic processes of the upper-mantle beneath the Zagros collision zone and Iranian plateau. An important question is how the convergence between the Arabian and Eurasian plate...
Conference Paper
Full-text available
One of the youngest orogenic belts, the Zagros orogeny in the northern margin of the Arabian plate is formed during Arabia-Eurasia collision. Despite a number of studies, many questions still remain open about the deep structure and dynamics of the collision zone. To figure out the dynamics of the collision, we have used different seismological met...
Conference Paper
Full-text available
We performed shear wave splitting analyses on core-refracted teleseismic shear waveforms from 150 broad-band stations across the Iranian plateau and Zagros to investigate seismic anisotropy in the region. Seismic anisotropy is quantified by shear-wave splitting parameters, i.e. fast polarization direction and split delay time. Our measurements reve...
Article
Full-text available
We compute models for lithospheric P and S velocity structure beneath a transect extending from the South Caspian Basin shoreline, crossing the West Alborz — Talesh ranges to the north of Central Iran block assemblage. The models were derived from regional and teleseismic travel times of compressional and shear seismic phases recorded by a dense te...
Conference Paper
Distant earthquake data recorded by Zagros03 array from Dehloran in Iran-Iraq border to Caspian Sea in northern Iran are used to constrain 3-D variations in upper mantle P-wave velocity using teleseismic tomography. Relative P wave arrival time residuals have been extracted using cross correlation and adaptive stacking techniques, in which we explo...

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