Results 51 to 60 of about 376 (117)

Lg Coda Variations in North‐Central Iran

open access: yesInternational Journal of Geophysics, Volume 2012, Issue 1, 2012., 2012
Ground motion records in north‐central Iran have been used in order to obtain the Lg coda Q, using stack spectral ratio method. The lateral variations in Q0 and its frequency dependence are estimated in the 0.3–7.0 Hz frequency range which led to Q = 267(±32) × f0.71(±0.14).
Mojtaba Naghavi   +3 more
wiley   +1 more source

A declustered earthquake catalog for the Iranian Plateau [PDF]

open access: yes, 2015
A unified catalog of earthquakes in Iran and adjacent regions (the area bounded in 22º-42ºN and 42º-66ºE) covering the period of 4th century B.C. through 2012 with Mw≥4 is provided. The catalog includes all events for which magnitude have been determined
Mirzaei, Noorbakhsh   +2 more
core   +3 more sources

The occurrence of Neoflabellina bioevents across the Coniacian/Santonian boundary in the Abderaz Formation, Kopeh-Dagh Basin, Iran

open access: yesStratigraphy, 2020
In this study, Abderaz Formation at six stratigraphical sections, in east and center of the Kopeh-Dagh sedimentary basin, has been investigated, based on biserial planktonic foraminifera. Totally, 831 samples, with 3 meter distance, were gathered from a sequence with 2800 meter thickness. Also 4 genera and 17 species of biserial planktonic foraminifera
Meysam Shafiee Aredestani   +2 more
openaire   +3 more sources

Permian–Triassic magmatism in response to Palaeotethys subduction and pre-Late Triassic arrival of northeast Gondwana-derived continental fragments at the southern Eurasian margin: detrital zircon evidence from Triassic sandstones of Central Iran [PDF]

open access: yes, 2020
The closure of Palaeotethys that led to the collision of the Cimmerian blocks with the southern Eurasian margin causing the Eo-Cimmerian orogeny during the Early Mesozoic is still controversially discussed. The Triassic Nakhlak Group in Central Iran is a
Berndt, J   +2 more
core   +4 more sources

Coupling of Tectonics, Climate, and Lithology in Orogenic Systems: Insights From Cosmogenic 10Be Erosion Rates and River Profile Inversion Modeling in the Talesh Mountains, NW Iranian Plateau

open access: yesTectonics, Volume 44, Issue 2, February 2025.
Abstract The landscape of the Talesh Mountains, located in the NW sector of the Iranian Plateau (within the Arabia‐Eurasia collision zone), results from the interplay of multiple forces. To explore the interaction between tectonics, climate, and lithology we present 11 new erosion rates derived from meteoric 10Be on the eastern (wetter) and western ...
Mohammad Moumeni   +8 more
wiley   +1 more source

Geomorphic signal of active faulting at the northern edge of Lut Block. Insights on the kinematic scenario of Central Iran [PDF]

open access: yes, 2016
Recent works documented Neogene to Quaternary dextral strike-slip tectonics along the Kuh-e-Sarhangi and Kuh-e-Faghan intraplate strike-slip faults at the northern edge of the Lut Block of Central Iran, previously thought to be dominated by sinistral ...
Claudio, Faccenna   +6 more
core   +1 more source

Temporal properties of aftershock sequences of large earthquakes in Iran - Analysis of primary and secondary aftershocks of the Ezgeleh sequence [PDF]

open access: yes, 2020
In this study, the decay of earthquake aftershock sequences of some major earthquakes in different tectonic regimes in the Iranian plateau is discussed. The studied earthquakes are Rigan [2010], Ahar-Varzaghan [2012], Goharan [2013], Sefidsang [2017] and
Lavasani, Mahdieh, Shabani, Elham
core   +2 more sources

Provenance and Fluvial‐Aeolian Process of Kyzylkum Desert: Constrained by Detrital Zircon U–Pb Dating

open access: yesGeophysical Research Letters, Volume 51, Issue 13, 16 July 2024.
Abstract The Kyzylkum Desert, as a transition area of different dust source in Central Asia, provides and reserves a large amount of dust transported by different atmospheric circulation systems, affecting Uzbekistan and downwind East Asia. However, there remains very few investigations about sediment sources and control factors of the desert.
Mingyu Zhang   +5 more
wiley   +1 more source

A comprehensive review of HVS‐I mitochondrial DNA variation of 19 Iranian populations

open access: yesAnnals of Human Genetics, Volume 88, Issue 3, Page 259-277, May 2024.
Abstract Iran is located along the Central Asian corridor, a natural artery that has served as a cross‐continental route since the first anatomically modern human populations migrated out of Africa. We compiled and reanalyzed the HVS‐I (hypervariable segment‐I) of 3840 mitochondrial DNA (mtDNA) sequences from 19 Iranian populations and from 26 groups ...
Motahareh Amjadi   +4 more
wiley   +1 more source

Analysis and visualization of seismic data using mutual information [PDF]

open access: yes, 2013
Seismic data is difficult to analyze and classical mathematical tools reveal strong limitations in exposing hidden relationships between earthquakes. In this paper, we study earthquake phenomena in the perspective of complex systems. Global seismic data,
António Lopes   +15 more
core   +2 more sources

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