Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/15497
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dc.contributor.authorHeidarzadeh, M-
dc.contributor.authorHarada, T-
dc.contributor.authorSatake, K-
dc.contributor.authorIshibe, T-
dc.contributor.authorTakagawa, T-
dc.date.accessioned2017-11-27T15:24:00Z-
dc.date.available2017-11-27T15:24:00Z-
dc.date.issued2017-09-20-
dc.identifier.citationHeidarzadeh, M., Harada, T., Satake, K., Ishibe, T. and Takagawa, T. (2017) 'Tsunamis from strike-slip earthquakes in the Wharton Basin, northeast Indian Ocean: March 2016 Mw7.8 event and its relationship with the April 2012 Mw 8.6 event', Geophysical Journal International, 211 (3), pp. 1601 - 1612, doi: 10.1093/gji/ggx395.en_US
dc.identifier.issn0956-540X-
dc.identifier.urihttps://bura.brunel.ac.uk/handle/2438/15497-
dc.descriptionSupplementary data are available at GJI online.-
dc.description.abstractThe Wharton Basin, off southwest Sumatra, ruptured to a large intraplate left-lateral strike-slip Mw 7.8 earthquake on 2016 March 2. The epicentre was located ∼800 km to the south of another similar-mechanism intraplate Mw 8.6 earthquake in the same basin on 2012 April 11. Small tsunamis from these strike-slip earthquakes were registered with maximum amplitudes of 0.5−1.5 cm on DARTs and 1−19 cm on tide gauges for the 2016 event, and the respective values of 0.5−6 and 6−40 cm for the 2012 event. By using both teleseismic body waves and tsunami observations of the 2016 event, we obtained optimum slip models with rupture velocity (Vr) in the range of 2.8–3.6 km s−1 belonging to both EW and NS faults. While the EW fault plane cannot be fully ruled out, we chose the best model as the NS fault plane with a Vr of 3.6 km s−1, a maximum slip of 7.7 m and source duration of 33 s. The tsunami energy period bands were 4−15 and 7−24 min for the 2016 and 2012 tsunamis, respectively, reflecting the difference in source sizes. Seismicity in the Wharton Basin is dominated by large strike-slip events including the 2012 (Mw 8.6 and 8.2) and 2016 (Mw 7.8) events, indicating that these events are possible tsunami sources in the Wharton Basin. Cumulative number and cumulative seismic-moment curves revealed that most earthquakes are of strike-slip mechanisms and the largest seismic-moment is provided by the strike-slip earthquakes in this basin.en_US
dc.format.extent1601 - 1612-
dc.format.mediumPrint-Electronic-
dc.language.isoenen_US
dc.publisherOxford University Press on behalf of The Royal Astronomical Societyen_US
dc.rightsCopyright © The Authors 2017. Published by Oxford University Press on behalf of The Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.-
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/-
dc.titleTsunamis from strike-slip earthquakes in the Wharton Basin, northeast Indian Ocean: March 2016 Mw7.8 event and its relationship with the April 2012 Mw 8.6 eventen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.1093/gji/ggx395-
dc.relation.isPartOfGeophysical Journal International-
pubs.issue3-
pubs.publication-statusPublished-
pubs.volume211-
dc.identifier.eissn1365-246X-
Appears in Collections:Dept of Mechanical and Aerospace Engineering Research Papers

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