Complex multifault rupture during the 2016 Mw 7.8 Kaikoura earthquake, New Zealand

被引:521
作者
Hamling, Ian J. [1 ]
Hreinsdottir, Sigrun [1 ]
Clark, Kate [1 ]
Elliott, John [2 ]
Liang, Cunren [3 ]
Fielding, Eric [3 ]
Litchfield, Nicola [1 ]
Villamor, Pilar [1 ]
Wallace, Laura [1 ,4 ]
Wright, Tim J. [2 ]
D'Anastasio, Elisabetta [1 ]
Bannister, Stephen [1 ]
Burbidge, David [1 ]
Denys, Paul [5 ]
Gentle, Paula [6 ]
Howarth, Jamie [1 ]
Mueller, Christof [1 ]
Palmer, Neville [1 ]
Pearson, Chris
Power, William [1 ]
Barnes, Philip [7 ]
Barrell, David J. A. [1 ]
Van Dissen, Russ [1 ]
Langridge, Robert [1 ]
Little, Tim [8 ]
Nicol, Andrew [9 ]
Pettinga, Jarg [9 ]
Rowland, Julie [10 ]
Stirling, Mark [11 ]
机构
[1] GNS Sci, Lower Hutt, New Zealand
[2] Univ Leeds, Sch Earth & Environm, Ctr Observat & Modelling Earthquakes Volcanoe & T, Leeds, W Yorkshire, England
[3] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA
[4] Univ Texas Austin, Inst Geophys, Austin, TX 78758 USA
[5] Univ Otago, Sch Surveying, Dunedin, New Zealand
[6] Land Informat New Zealand, Wellington, New Zealand
[7] Natl Inst Water & Atmospher Res, Wellington, New Zealand
[8] Victoria Univ Wellington, Sch Geog Environm & Earth Sci, Wellington, New Zealand
[9] Univ Canterbury, Dept Geol Sci, Christchurch, New Zealand
[10] Univ Auckland, Sch Environm, Auckland, New Zealand
[11] Univ Otago, Dept Geol, Dunedin, New Zealand
基金
英国自然环境研究理事会;
关键词
MAYOR-CUCAPAH EARTHQUAKE; STRIKE-SLIP-FAULT; SOUTH-ISLAND; SURFACE RUPTURE; QUATERNARY SLIP; HOPE FAULT; DEFORMATION; GEOMETRY; PLATE; MARLBOROUGH;
D O I
10.1126/science.aam7194
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
On 14 November 2016, northeastern South Island of New Zealand was struck by a major moment magnitude (M-w) 7.8 earthquake. Field observations, in conjunction with interferometric synthetic aperture radar, Global Positioning System, and seismology data, reveal this to be one of the most complex earthquakes ever recorded. The rupture propagated northward for more than 170 kilometers along both mapped and unmapped faults before continuing offshore at the island's northeastern extent. Geodetic and field observations reveal surface ruptures along at least 12 major faults, including possible slip along the southern Hikurangi subduction interface; extensive uplift along much of the coastline; and widespread anelastic deformation, including the similar to 8-meter uplift of a fault-bounded block. This complex earthquake defies many conventional assumptions about the degree to which earthquake ruptures are controlled by fault segmentation and should motivate reevaluation of these issues in seismic hazard models.
引用
收藏
页数:11
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