Crustal deformation, spatial distribution of earthquakes and along strike segmentation of the Sagaing Fault, Myanmar

Autor: Bhaskar Kundu, Dibyashakti Panda, Vineet K. Gahalaut, Claude Rangin
Přispěvatelé: NIT Rourkela, Ministry of Earth Sciences [India], Géoazur (GEOAZUR 7329), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Journal of Asian Earth Sciences
Journal of Asian Earth Sciences, Elsevier, 2018, 166, pp.89-94. ⟨10.1016/j.jseaes.2018.07.029⟩
ISSN: 1367-9120
DOI: 10.1016/j.jseaes.2018.07.029⟩
Popis: International audience; The ∼1200 km long north-south oriented Sagaing fault (plate boundary fault between the Burma and Sunda plates), entirely located in Myanmar, passes through some major cities, and has witnessed several major earthquakes since prehistoric time, including the recent Mw 6.8 Thabeikkyin earthquake in 2012. The Sagaing fault accommodates ∼50–55% of dextral motion of the India-Sunda plate motion. Combined, geodetic observations and rheological considerations using topography as a proxy, we propose along strike segmentation of the Sagaing fault from centrally locked segment to creeping segment further north along the Koma fault. Such segmentation facilitates stress transfer (or loading) from creeping segment to locked segment, and influences earthquake nucleation process and along strike spatial extent of great earthquake ruptures. Topographic margins and their relative strength, predicted from the Newtonian channel flow model, also support the along strike segmentation behaviour.
Databáze: OpenAIRE
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