Method and device for rapidly and automatically generating seismic source mechanism solution

Abstract

The invention provides a method and a device for quickly and automatically generating a seismic source mechanism solution. The method comprises the following steps of: performing seismic facies pickup on real-time seismic monitoring data by using a seismic facies recognition model to obtain a seismic facies category; identifying the initial motion polarity of the real-time seismic monitoring data by using the initial motion polarity identification model to obtain the initial motion polarity of the P wave; carrying out seismic correlation on the seismic phase category to obtain a seismic correlation result; obtaining an epicenter position according to an earthquake correlation result; and according to the seismic correlation result, the epicenter position and the initial motion polarity of the P wave, carrying out inversion on the seismic phase mechanism to obtain a seismic source mechanism solution. According to the method, information such as P and S arrival time and P wave initial motion polarity is efficiently and accurately obtained by using the seismic phase identification model and the initial motion polarity identification model, and the seismic correlation result and the epicenter position are obtained based on the information, so that the workload of inverting the seismic source mechanism can be greatly reduced, and the inversion speed of the seismic source mechanism solution is improved.

Description

technical field [0001] The invention relates to the technical field of seismic information processing, in particular to a method and a device for rapidly and automatically generating focal mechanism solutions. Background technique [0002] With the advancement of the digital network project, more than 1,200 seismic stations have been established in my country, realizing real-time data transmission and sharing across the country. After the earthquake occurs, it is of great significance to process the real-time monitoring data as soon as possible and determine the earthquake source parameter information, which is then handed over to relevant departments for daily earthquake monitoring, emergency decision-making, and alarm information release and other related operations. In addition to the well-known earthquake time, focal location, and magnitude, earthquake focal parameters also include focal mechanism solutions. The focal mechanism solution is mainly determined by nodal sol...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a method and device for automatically obtaining information such as full waveform, P wave initial motion polarity, S / P amplitude ratio, and automatically inverting the source mechanism by applying artificial intelligence technology , to solve the problem of low inversion efficiency of the focal mechanism solution and reduce the non-uniqueness of the solution

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