Abstract
We explore the use of high-rate GPS, strong-motion records and their joint use for earthquake monitoring, the data collected during 2011 Mw 9.0 Tohoku earthquake was studied. We compared the recorded co-seismic movement, analyzed the displacements in both time-frequency domain. Meanwhile, the comparison of P wave detection was shown and the dynamic velocity waves were discussed. The results suggest that the GPS-only solution is good for low-frequency signal, and the strong-motion-only solution is good for high-frequency signal, thus, the integration of two datasets best complement the advantages of each, more details of co-seismic motions and broader frequency band of seismic signals. This is crucial for earthquake monitoring and early warning.
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Acknowledgments
The work was partly supported by the program of National Natural Science Foundation of China (Grant No:41504006) and Chinese Academy of Sciences (CAS) programs of “Pioneer Hundred Talents”, “Light of West China” and “Youth Innovation Promotion Association”.
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Tu, R., Zhang, P., Zhang, R. et al. Comparison of high-rate GPS, strong-motion records and their joint use for earthquake monitoring: a case study of the 2011 Mw 9.0 Tohoku earthquake. Arab J Geosci 9, 542 (2016). https://doi.org/10.1007/s12517-016-2570-z
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DOI: https://doi.org/10.1007/s12517-016-2570-z