Spatial distribution of seismic cycle progression in northeast India and Bangladesh regions inferred from natural time analysis

Pasari, Sumanta; Verma, Himanshu; Sharma, Yogendra; Choudhary, Neha

doi:10.1007/s11600-022-00935-z

Artykuł - szczegóły

Tytuł artykułu

Spatial distribution of seismic cycle progression in northeast India and Bangladesh regions inferred from natural time analysis

Autorzy

Pasari Sumanta , Verma Himanshu , Sharma Yogendra , Choudhary Neha

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-022-00935-z

Warianty tytułu

Języki publikacji

Abstrakty

The ability to determine the current state of seismic cycle of large sized earthquakes is of profound importance in societal policymaking and disaster preparation. In this article, we present a probabilistic formulation of event-based natural time counts to develop earthquake potential score (EPS) at 36 cities from northeast India, Bangladesh, and adjoining areas. The time-dependent natural time analysis provides an attractive regional seismic hazard evaluation method, because it (1) exhibits spatiotemporal and clustering invariability, ensuring model consistency, (2) considers "seismic cycles" for a network of faults in a defined area, and (3) enables some physical interpretations aligned with earthquake generation process characterized by stress accumulation and moment release. The modeling results for M≥6 events reveal that EPS values lie between 41 and 94%, with the scores of Agartala (91%), Aizawl (84%), Dimapur (80%), Guwahati (41%), Imphal (90%), Malda (70%), Shillong (52%), Siliguri (73%), Barisal (59%), Chittagong (94%), Comilla (88%), Dhaka (78%), Mymensingh (81%), Narayanganj (77%), Rangpur (55%), and Sylhet (60%). These values essentially serve as a yardstick to statistically assess the current state of regional seismic cycle progression in the study region, bringing out some key information to the decision-makers, engineers, scientists, and citizens to improve earthquake preparedness and mitigation strategies.

Słowa kluczowe

earthquake potential score seismic cycle north-east India Bangladesh

ocena potencjalnego trzęsienia ziemi cykl sejsmiczny Indie północno-wschodnie Bangladesz

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2023

Tom

Vol. 71, no. 1

Strony

89--100

Opis fizyczny

Bibliogr. 63 poz.

Twórcy

autor

Pasari Sumanta

sumanta.pasari@pilani.bits-pilani.ac.in

Department of Mathematics, Birla Institute of Technology and Science Pilani, Pilani 333031, India

https://orcid.org/0000-0001-8498-8746

autor

Verma Himanshu

Department of Mathematics, Birla Institute of Technology and Science Pilani, Pilani 333031, India

autor

Sharma Yogendra

Department of Mathematics, Birla Institute of Technology and Science Pilani, Pilani 333031, India
Department of Geomatics, National Cheng Kung University, Tainan, Taiwan

autor

Choudhary Neha

Department of Mathematics, Birla Institute of Technology and Science Pilani, Pilani 333031, India

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).

Typ dokumentu

Bibliografia

Identyfikator YADDA

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