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东北地方太平洋近海地震发生时和地震后的地形变与根据地形变推断的滑动分布

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摘要 通过陆地GPS连续观测网,伴随2011年东北地方太平洋近海地震的发生,观测到了在宫城县牡鹿半岛东南东方向最大达5.3m的地形变。东北地方太平洋沿岸还大范围出现超过1m的沉降,使该地区的海港设施和住宅地长时间被淹,并成为灾后恢复的障碍。进入21世纪后,正式开始了GPS-音响结合方式或海底水压仪的海底地形变观测网,在震源区探测到了大的地形变。本文将介绍根据GPS和海底地形变观测探明的地震发生时和地震后地形变的概况和以地形变为基础的板块边界的滑动分布模式。
出处 《国际地震动态》 2012年第10期5-10,共6页 Recent Developments in World Seismology
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参考文献33

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