Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorCoudurier‐Curveur, Aurélieen_US
dc.contributor.authorKarakaş, Ç.en_US
dc.contributor.authorSingh, S.en_US
dc.contributor.authorTapponnier, P.en_US
dc.contributor.authorCarton, H.en_US
dc.contributor.authorHananto, N.en_US
dc.identifier.citationCoudurier‐Curveur, A., Karakaş, Ç., Singh, S., Tapponnier, P., Carton, H. & Hananto, N. (2020). Is there a nascent plate boundary in the Northern Indian Ocean?. Geophysical Research Letters, 47(7). doi:10.1029/2020GL087362en_US
dc.description.abstractThe northern Indian Ocean has been widely recognized as an area of broadly distributed deformation within the composite India‐Australia‐Capricorn plate, hosting several diffuse boundary zones and a diffuse triple junction. The occurrence, along reactivated fracture zones, of the exceptionally large (Mw = 8.6 and Mw = 8.2) 2012 Wharton Basin strike‐slip earthquakes, however, questions whether this composite plate is breaking apart along a discrete boundary. Using recent bathymetric and seismic data, we analyze the most prominent fracture zone (F6a), whose structural trace is particularly well expressed. We identify 60 kilometric‐scale pull‐apart basins with geometric properties (length/width ratios) similar to those observed along continental strike‐slip plate boundaries. Four of the pull‐aparts formed above narrow, subvertical faults extending into the oceanic crust. Within the broad Wharton deformation zone, the significant slip rates (0.8 to 2.5 mm/yr) and unusually large coseismic displacements recorded along F6a suggest that it may be a nascent plate boundary.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relation.ispartofGeophysical Research Lettersen_US
dc.rights© 2020 The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en_US
dc.titleIs there a nascent plate boundary in the Northern Indian Ocean?en_US
dc.typeJournal Articleen
dc.contributor.researchEarth Observatory of Singaporeen_US
dc.description.versionPublished versionen_US
dc.subject.keywordsWharton Basinen_US
dc.subject.keywordsReactivated Fracture Zonesen_US
dc.description.acknowledgementThis research was partly supported by the Singapore National Research Foundation and Ministry of Education under the Earth Observatory of Singapore Research Center of Excellence initiative. The bathymetric data were acquired during the MIRAGE 1 (Marine Investigation of the Rupture Anatomy of the 2012 Great Earthquake, experiment in the Wharton Basin. The seismic profiles were acquired during the MEGATERA (Mentawai Gap— Tsunami Earthquake Risk Assessment) experiment (http://www.marine-geo. org/tools/search/entry.php?id= FK150523). We thank Qin Yanfang for processing of the four seismic lines used in this work. The morphologic analyses were performed using the ENVI software, and the maps and figures designed using Adobe Illustrator. This work comprises Earth Observatory of Singapore contribution No. 286.en_US
item.fulltextWith Fulltext-
Appears in Collections:EOS Journal Articles
Files in This Item:
File Description SizeFormat 
Is There a Nascent Plate Boundary in the Northern Indian Ocean.pdf25.84 MBAdobe PDFView/Open

Page view(s) 50

checked on Sep 26, 2020

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.