Accelerographic measurements of the 27 February 2010 offshore Maule, Chile earthquake
Accelerographic measurements of the 27 February 2010 offshore Maule, Chile earthquake
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2010 年 2 月 27 日智利莫莱近海地震的加速度测量
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
M. S. Adaros
中科院分区：
文献类型：
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作者：
G. Saragoni;M. Lew;F. Naeim;L. D. Carpenter;N. Youssef;F. Rojas;M. S. Adaros
2010年2月27日发生在智利Maule近海的震级为8.8级的特大地震是世界上有记录的第五大地震，因此被认为是一次特大地震。这次俯冲板块间逆冲地震发生在纳斯卡（大洋）板块与南美大陆板块的交汇处。这种类型的地震影响到美国和加拿大的西北部地区，以及阿拉斯加。因此，研究记录的加速度特征及其对美国高层建筑未来行为的影响是非常重要的。虽然地震产生的加速度记录显示，从峰值地面加速度和持续时间来看，地面运动非常高，但观测到的地震破坏程度更像是8级地震的预期破坏程度。而不是力矩大小为8?8。这可能是断层破裂面凹凸不平的结果。版权所有©2010 John Wiley & Sons， Ltd
The mega earthquake of 27 February 2010, offshore Maule, Chile with moment magnitude of 8·8 is the fifth largest recorded earthquake in the world and, therefore, is considered to be a mega earthquake. This subduction interplate thrust earthquake occurred at the convergence of the Nazca (oceanic) plate with the South American continental plate. This type of earthquake affects the north‐western region of USA and Canada, as well as Alaska. Therefore, it is important to study the characteristics of the recorded accelerograms and their effects on the future behaviour of tall buildings in USA. Although the earthquake produced accelerographic records with very high ground motions in terms of peak ground accelerations and very long duration of ground shaking, the observed damage from this earthquake was more like the level of damage expected from a moment magnitude 8?0 rather than a moment magnitude of 8?8. This may be the result of asperities in the fault rupture surface. Copyright © 2010 John Wiley & Sons, Ltd.