Fault rupture patterns during the Mw7.8 2016 Kaikoura Earthquake in the region between the Leader and Charwell rivers, north Canterbury, New Zealand

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dc.contributor.authorBushell T
dc.contributor.authorNicol A
dc.contributor.authorFenton C
dc.contributor.authorKhajavi N
dc.contributor.authorHyland N
dc.contributor.authorPettinga J
dc.contributor.authorPedley KL
dc.contributor.authorMcHale J
dc.date.accessioned2018-05-27T21:43:24Z
dc.date.available2018-05-27T21:43:24Z
dc.date.issued2017en
dc.date.updated2017-10-18T22:55:23Z
dc.description.abstractSurface rupture and slip from the Mw 7.8 2016 Kaikōura Earthquake have been mapped in the region between the Leader and Charwell rivers using field mapping and LiDAR data. The eastern Humps, north Leader and Conway-Charwell faults ruptured the ground surface in the study area. The E-NE striking ‘The Humps’ Fault runs along the base of the Mt Stewart range front, appears to dip steeply NW and intersects the NNW-NNE Leader Fault which itself terminates northwards at the NE striking Conway-Charwell Fault. The eastern Humps Fault is up to the NW and accommodates oblique slip with reverse and right lateral displacement. Net slip on ‘The Humps’ Fault is ≤4 m and produced ≤4 m uplift of the Mt Stewart range during the earthquake. The Leader Fault strikes NNW-NNE with dips ranging from ~10° west to 80° east and accommodated ≤4 m net slip comprising left-lateral and up-to-the-west vertical displacement. Like the Humps west of the study area, surface-rupture of the Leader Fault occurred on multiple strands. The complexity of rupture on the Leader Fault is in part due to the occurrence of bedding-parallel slip within the Cretaceous-Cenozoic sequence. Although the Mt Stewart range front is bounded by ‘The Humps’ Fault, in the study area neither this fault nor the Leader Fault were known to have been active before the earthquake. Fieldwork and trenching investigations are ongoing to characterise the geometry, kinematics and paleoseismic history of the mapped active faults.en
dc.identifier.citationBushell T, Nicol A, Fenton C, Khajavi N, Hyland N, Pettinga J, Pedley KL, McHale J (2017). Fault rupture patterns during the Mw7.8 2016 Kaikoura Earthquake in the region between the Leader and Charwell rivers, north Canterbury, New Zealand. Blenheim, New Zealand: 8th International INQUA Meeting on Paleoseismology, Active Tectonics and Archeoseismology (PATA). 13/11/2017-16/11/2017.en
dc.identifier.urihttp://hdl.handle.net/10092/15436
dc.language.isoen
dc.subjectKaikōura earthquakeen
dc.subjectsurface ruptureen
dc.subjectNorth Canterburyen
dc.subjectNew Zealanden
dc.subject.anzsrcField of Research::04 - Earth Sciences::0403 - Geology::040313 - Tectonicsen
dc.titleFault rupture patterns during the Mw7.8 2016 Kaikoura Earthquake in the region between the Leader and Charwell rivers, north Canterbury, New Zealanden
dc.typeConference Contributions - Publisheden
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