Study on the characteristic mechanisms of infrasonic precursors during the damage process of impending earthquake sources.

ABSTRACT: Infrasonic signals measured before an earthquake carry information about the size and development speed of the source fracture, the stress at the fracture site and the elastic properties of the geologic medium. The infrasonic signal has a stable time scale, and compared with other precursors, infrasound has a unique sensitivity to earthquake disasters. However, to date, there has been no relevant theoretical research on the mechanism of infrasonic anomalies, and information on the development of fracture sources cannot be obtained from these characteristics, which makes the application of this anomaly in earthquake prediction challenging. In this study, we obtained the characteristics of short-term and impending infrasonic anomalies based on the infrasound data of more than 100 strong eart

SUBMITTER: Wang W 

PROVIDER: S-EPMC8486096 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature