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Alternate abstract:
Passive microwave remote sensing satellites are capable of observing the Earth surface in mode of multi-frequency and multi-polarization, and its all-weather and high sensitivity characteristics satisfy the requirements of monitoring on and analyzing to crustal activity and earthquake. In recent years, remote sensing monitoring and analysis of thermal anomalies in the process of earthquake preparation and occurrence have been widely concerned. In this paper, the state-of-the-art of multi-frequency and multi-polarized passive microwave satellite remote sensing for earthquake monitoring and seismic anomaly detection are reviewed in terms of the development of satellite-borne passive microwave sensors and the earthquake application of passive microwave remote sensing. The deficiencies and achievements of the selection of microwave radiation data, the method of abnormity analysis, the elimination of gross error, and the cognition of info-physics are discussed. The recent progresses of passive microwave remote sensing in seismicity research are summarized, and the scientific logic and synergic chain of passive microwave satellite remote sensing with multi-frequency and multi-polarization on seismic monitoring and anomaly identification are presented. Moreover, two possible frontiers of the interdisciplinary of remote sensing and geophysics, i.e., the reliable identification of seismic anomaly from microwave radiation and the embedded info-physics of microwave remote sensing on the alteration of crust stress field, are pointed out. The related critical issues on the fundamental laboratory experiment of remote sensing rock mechanics and the synergic analysis of seismic remote sensing, which need to be solved urgently, are discussed. Finally, the authors suggest that multidisciplinary union, intersection and fusion are indispensable for further deepening the development of science and technology of seismicity remote sensing.
