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Method and device for automatically inverting seismic source mechanism solution

A focal mechanism and inversion technology, which is applied to measuring devices, seismology, seismic survey, etc., can solve the problem of low efficiency of focal mechanism solution inversion, achieve the effect of increasing inversion speed and reducing workload

Active Publication Date: 2022-02-18
INST OF GEOPHYSICS CHINA EARTHQUAKE ADMINISTRATION
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Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a method and device for automatically inverting the focal mechanism solution to solve the problem of low inversion efficiency of the focal mechanism solution

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  • Method and device for automatically inverting seismic source mechanism solution
  • Method and device for automatically inverting seismic source mechanism solution

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and...

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Abstract

The invention provides a method and a device for automatically inverting a seismic source mechanism solution. The method comprises the following steps: calculating theoretical P wave arrival time and theoretical S wave arrival time of each station according to a seismic directory and a one-dimensional velocity structure model; intercepting the seismic waveform data to be studied according to the seismic directory, the theoretical P wave arrival time and the theoretical S wave arrival time to obtain intercepted seismic waveform data; performing seismic phase information extraction on the intercepted seismic waveform data by using a seismic phase identification model and an initial motion polarity identification model to obtain a seismic phase category and the initial motion polarity of a P wave; and according to the seismic directory, the seismic phase category and the initial motion polarity of the P wave, carrying out inversion on the seismic source mechanism to obtain the seismic source mechanism solution. Information such as P and S arrival time and P-wave initial motion polarity is efficiently and accurately acquired by using the seismic phase identification model and the initial motion polarity identification model, the workload of inverting a seismic source mechanism can be greatly reduced, and the inversion speed of a 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 automatically inverting the focal mechanism solution. 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, the real-time monitoring data can be processed to obtain the earthquake source parameters at the first time. After the earthquake source parameter information is determined, it is of great significance to the relevant departments' daily earthquake monitoring, foreshock identification, emergency decision-making, and alarm information release. very important. In addition to the well-known seismic moment, focal location, and magnitude, earthquake focal parameters also include focal mechanism solutions. The focal mechanism solution i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/00
CPCG01V1/282G01V1/01
Inventor 赵明肖卓伟陈石
Owner INST OF GEOPHYSICS CHINA EARTHQUAKE ADMINISTRATION
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