GPS与强震记录的一致性--以2011年东北冲地震Mw9 .0为例
Consistency of GPS and strong-motion records: case study of Mw9.0 Tohoku-Oki 2011 earthquake
摘要：
全球定位系统和强震传感器被广泛用于监测结构健康和地球表面运动，重点是结构的反应，地震定性和破裂建模。大多数研究表明，这两种系统在很长一段时间内（例如> 100秒）存在差异。本研究的目的是通过比较GPS和强震记录在频域中的一致性以及比较它们各自在几个频带的位移波形来评估它们的兼容性。为此，使用2011年东北Mw9.0地震的23个同位点的GPS和强震记录，以表明两个数据集之间的一致性取决于激励的频率，激励信号的方向和距激励源的距离。
英文摘要：
GPS and strong-motion sensors are broadly used for the monitoring of structural health and Earth surface motions, focusing on response of structures, earthquake characterization and rupture modeling. Most studies have shown differences between the two systems at very long periods (e.g. >100sec). The aim of this study is the assessment of the compatibility of GPS and strong-motion records by comparing the consistency in the frequency domain and by comparing their respective displacement waveforms for several frequency bands. For this purpose, GPS and strong-motion records of 23 collocated sites of the Mw9.0 Tohoku 2011 earthquake were used to show that the consistency between the two datasets depends on the frequency of the excitation, the direction of the excitation signal and the distance from the excitation source.
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