Surface rupture during the 2010 Mw 7.1 Darfield (Canterbury) earthquake: Implications for fault rupture dynamics and seismic-hazard analysis
Surface rupture during the 2010 Mw 7.1 Darfield (Canterbury) earthquake: Implications for fault rupture dynamics and seismic-hazard analysis
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DOI：
10.1130/g32528.1
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发表时间：
2012
期刊：
影响因子：
5.8
通讯作者：
M. Quigley;R. Dissen;N. Litchfield;P. Villamor;B. Duffy;D. Barrell;K. Furlong;T. Stahl;E. Bilderback;D. Noble
中科院分区：
文献类型：
--
作者：
M. Quigley;R. Dissen;N. Litchfield;P. Villamor;B. Duffy;D. Barrell;K. Furlong;T. Stahl;E. Bilderback;D. Noble
2010年9月M W 7.1 Darfield（坎特伯雷）在新西兰的地震是这种地震的最佳地震之一。 - 延误农业景观。对于此M W的地震而言，D Max / Surface破裂长度（SRL）和D AVG / SRL比是有史以来最大的，是有史以来最大的，对于连续的行进式地震， ）W g是使用广泛使用的SRL -M W缩放回归的地震学得出的M W。 13.9±3.7 MPa的应力下降提供了一种将地震破裂与类似M W的板间破裂和板间破裂进行比较的背景。 。
The September 2010 M w 7.1 Darfield (Canterbury) earthquake in New Zealand is one of the best-recorded earthquakes of this magnitude. The earthquake occurred on a previously unidentified fault system and generated a 29.5 ± 0.5-km-long surface rupture across a low-relief agricultural landscape. High-accuracy measurements of coseismic displacements were obtained at over 100 localities along the Greendale fault. Maximum net displacement ( D max ) (5.3 ± 0.5 m) and average net displacement ( D avg ) (2.5 ± 0.1 m) are anomalously large for an earthquake of this M w . D max / surface rupture length ( SRL ) and D avg / SRL ratios are among the largest ever recorded for a continental strike-slip earthquake. "Geologically derived" estimates of moment magnitude (M w G ) are less than the seismologically derived M w , derived using widely employed SRL -M w scaling regressions. M w G is greater than M w using D max - and D avg -M w regressions. The "geologically derived" static stress drop of 13.9 ± 3.7 MPa provides a context with which to compare this earthquake rupture to interplate and intraplate ruptures of similar M w . This data set provides fundamental information on fault rupture processes relevant to seismic-hazard modeling in this region and analogous settings globally.