FOCAL MECHANISM SOLUTIONS AND SEISMIC IMPLICATIONS FOR THE EASTERN MAKRAN: A 30-YEAR PERSPECTIVE

Muhammad Imran Hafeez Abbasi ()
Additional contact information
Muhammad Imran Hafeez Abbasi: COMSATS University Abbottabad Campus.

Malaysian Journal of Geosciences (MJG), 2023, vol. 8, issue 2, 131-137

Abstract: The Makran Subduction Zone, straddling the nothern Arabian Sea along the borders of Pakistan and Iran, represents one of the most seismically complex regions on Earth, where the Arabian, Eurasian, and Indian plates converge. This study delves into the seismic intricacies of Eastern Makran, an area delineated by a labyrinth of tectonic demarcations including the Zendan, Jiroft, and Ornach-Nal faults, to uncover the underpinnings of its seismicity through an analysis of focal mechanism solutions (FMS) for earthquakes occurring between 1990 and 2019. Utilizing the Kikuchi and Kanamori method for modeling teleseismic P-waves and their surface reflections, this research filters through the data, discarding those compromised by noise, to present a clear picture of seismic activity ranging in magnitude from 4.0 to 7.8 Mw. Contrary to the expected prevalence of major earthquakes, findings reveal a rarity of such events in Eastern Makran, suggesting a nuanced interaction between the Indian and Eurasian plates marked by anticlockwise rotation. This rotation potentially fosters the isolation of microplates, hinting at a dynamic interplay of tectonic forces. Our comprehensive 30-year perspective provides new insights into the focal depths and fault plane solutions, contributing to a better understanding of the seismic behavior and tectonic mechanisms governing the Eastern Makran Subduction Zone.

Keywords: Subduction Zone; Earthquake focal depths; Focal mechanisms; Seismogenic thickness (search for similar items in EconPapers)
Date: 2023
References: Add references at CitEc
Citations:

Downloads: (external link)
https://myjgeosc.com/archives/2mjg2024/2mjg2024-131-137.pdf (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:zib:zbnmjg:v:8:y:2023:i:2:p:131-137

DOI: 10.26480/mjg.01.2024.131.137

Access Statistics for this article

Malaysian Journal of Geosciences (MJG) is currently edited by Dr. Rodeano Roslee

More articles in Malaysian Journal of Geosciences (MJG) from Zibeline International Publishing
Bibliographic data for series maintained by Zibeline International Publishing ( this e-mail address is bad, please contact ).