摘要
Multiply scattered waves are sensitive to media changes owing to the effect of repeated sampling,superposition and amplification. Based on this characteristic,small-medium changes could be detected by using coda wave interferometry. In recent years,coda wave interferometry has been widely used in estimating velocity variation with high precision in areas such as seismology and non-destructive testing. This paper systematically presents the principle and research status of coda wave interferometry,and especial focus is placed on the research of media velocity variations by using repeating earthquakes,artificial sources,and ambient noise. Applications of coda wave interferometry can contribute to the more subtle understanding of dynamic evolution process in the medium.
Multiply scattered waves are sensitive to media changes owing to the effect of repeated sampling, superposition and amplification. Based on this characteristic, small-medium changes could be detected by using coda wave interferometry. In recent years, coda wave interferometry has been widely used in estimating velocity variation with high precision in areas such as seismology and non-destructive testing. This paper systematically presents the principle and research status of coda wave interferometry, and especial focus is placed on the research of media velocity variations by using repeating earthquakes, artificial sources, and ambient noise. Applications of coda wave interferometry can contribute to the more subtle understanding of dynamic evolution process in the medium.
基金
sponsored by the Task of Department of Earthquake Monitoring and Prediction,CEA
the Special Fund of Earthquake Scientific Research of China Earthquake Administration(201208003)
