Evaluation of morphotectonic indicators based on the focus of earthquakes and the function of faults in Iran

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jafari Gholam Hassan; Karimi Zeinab

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Journal Paper

Paper Information

Journal: JOURNAL OF SPATIAL ANALYSIS ENVIRONMENTAL HAZARDS Year:2024 | Volume:10 | Issue:4 Page(s): 79-98

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Information Journal Paper

Title

Evaluation of morphotectonic indicators based on the focus of earthquakes and the function of faults in Iran

Author(s)

jafari Gholam Hassan | Karimi Zeinab | Issue Writer Certificate

Keywords

Earthquake

Morphotectonic

Fault

Iran

Abstract

Abstract In geosciences, morphotectonic indicators are used to investigate the effectiveness of land surfaces from neotectonic activities. In this article, the results of morphotectonic indices by tectonic zones of Iran, according to the energy released from the earthquake of 1900-2009 and the position of the basins relative to the types of faults (young seismic faults), Quaternary and pre-Quaternary) were analyzed. For this purpose, 110 years old Iran seismic data was extracted from the geodatabase, and during the programming process in MATLAB, it was converted from point-vector to surface-raster. In addition the results of the evaluation of morphotectonic indices of 142 basins of different zones were used, 8 inactive basins, 40 semi-active basins, and 94 active basins. Inactive basins are located in Alborz, Zagros, and Central Iran. . The results indicate that the amount of energy released can't examine a significant role in evaluating the morphotectonic indices of the basins. Basin’s location in the area of Quaternary faults and young seismic is of great value in the tectonically active basin. The lie of semi-active basins adjacent to active basins, or the lie of inactive basins adjacent to semi-active and active basins, and it should be borne in mind that the thresholds used to estimate the tectonic activity status of basins cannot be used as a definite and mathematical criterion in estimating the tectonic status of basins.

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