Previously Unknown Fault Shakes New Zealand's South Island
Previously Unknown Fault Shakes New Zealand's South Island
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此前未知的断层震动新西兰南岛
DOI：
10.1029/2010eo490001
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
S. Cox
中科院分区：
文献类型：
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作者：
M. Quigley;P. Villamor;K. Furlong;J. Beavan;R. Dissen;N. Litchfield;T. Stahl;B. Duffy;E. Bilderback;D. Noble;D. Barrell;R. Jongens;S. Cox
当地时间9月4日凌晨4点35分，新西兰南岛的坎特伯雷地区发生了一个之前未被发现的断层系统破裂，产生了一次矩震级为7.1的地震，给整个地区造成了广泛的破坏。与2010年海地地震形成鲜明对比的是，尽管震中位于基督城以西约40公里处（人口约386，000），但没有死亡，只有两人受伤。坎特伯雷地区现在面临着重建，估计耗资超过40亿新西兰元（合29.5亿美元）。
从积极的一面来看，这次地震提供了一个机会，在没有死亡或严重伤害的情况下，记录一个主要的走滑断层破裂的动力学和影响。坎特伯雷平原的低起伏和维护良好的农业景观有助于科学家以高分辨率描述与地震相关的非常微妙的地面变形，有助于对地震的基本地质特征进行分类[奎格利等人，2010年]。迅速动员合作的科学小组，使地震发生后立即迅速收集数据成为可能，目前正在开展新的科学方案，以加深对这一事件的了解。
At 4:35 A.M. local time on 4 September (1635 UTC, 3 September), a previously unrecognized fault system ruptured in the Canterbury region of New Zealand's South Island, producing a moment magnitude (Mw) 7.1 earthquake that caused widespread damage throughout the area. In stark contrast to the 2010 Mw 7.0 Haiti earthquake, no deaths occurred and only two injuries were reported despite the epicenter's location about 40 kilometers west of Christchurch (population ˜386,000). The Canterbury region now faces a rebuilding estimated to cost more than NZ$4 billion (US$2.95 billion).
On the positive side, this earthquake has provided an opportunity to document the dynamics and effects of a major strike-slip fault rupture in the absence of death or serious injury. The low-relief and well-maintained agricultural landscape of the Canterbury Plains helped scientists characterize very subtle earthquake-related ground deformation at high resolution, helping to classify the earthquake's basic geological features [Quigley et al., 2010]. The prompt mobilization of collaborating scientific teams allowed for rapid data capture immediately after the earthquake, and new scientific programs directed at developing a greater understanding of this event are under way.