Seismicity analysis of selected faults in Makran Southern Pakistan

• Autorzy: Khan Muhammad Jahangir , Ali Mubarik , Xu Min , Khan Mehrab

Identyfikatory

DOI

10.1007/s11600-020-00447-8

• Języki publikacji: EN

Abstrakty

EN

This study was focused on evaluation of seismicity yield of key faults guarding the terrestrial Makran region (Balochistan and Iran) using updated datasets. The Makran onshore region is bounded by paramount strike-slip faults (Chaman fault, Ghazaband fault, Ornach-Nal fault and Minab fault). We have compiled the earthquake’s catalog and performed iterative processes for declustering of independent main shocks, estimation of magnitude completeness and b-values. The main shocks of disastrous earthquakes, e.g., Mw 7.7 Quetta (1935) and Mw 7.7 Awaran (2013), have epicenters along the Ghazaband fault and splay of Chaman fault, respectively. The earthquake source parameters such as moment magnitude, focal depth, focal mechanism, and epicenter location was utilized in mapping and seismicity evaluation of the faults. The focal mechanism solution was derived to determine the fault mechanics in generating the Mw>5.0 events along these faults. This study helped us to compare the seismological profles of each boundary fault and present the seismological information including the characteristics of events on/along fault, estimation of re-occurrence period, corresponding b-value, and hazard potential of the of the key faults. Since our study is based on recent dataset, i.e., inclusion of 2013 Mw 7.7 Awaran earthquake, the estimated results could help in better planning against the earthquake hazard in near-feld cities & coastal towns of southern Pakistan.

Słowa kluczowe

EN

seismicity; GIS; Karachi; Southern Pakistan; Awaran earthquake

PL

sejsmiczność; GIS; Karaczi; Pakistan południowy; trzęsienie ziemi w Awaran

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2020
• Tom: Vol. 68, no. 4
• Strony: 965--978
• Opis fizyczny: Bibliogr. 53 poz.

Twórcy

autor

Khan Muhammad Jahangir

• Department of Earth and Environmental Sciences, Bahria University Karachi Campus, Karachi, Pakistan

autor

Ali Mubarik

• Department of Earth and Environmental Sciences, Bahria University Islamabad Campus, Islamabad, Pakistan

autor

Xu Min

• CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Guangzhou, China

autor

Khan Mehrab

• Department of Earth and Environmental Sciences, Bahria University Karachi Campus, Karachi, Pakistan

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021)