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A method and system for realizing visualization of aftershock fault structure

An implementation method and fault technology, applied in seismic signal processing and other directions, can solve problems such as the inability to accurately predict the degree of aftershock risk, and the large error in the results of risk assessment in aftershock areas.

Active Publication Date: 2020-08-04
SHENZHEN UNIV
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Problems solved by technology

[0004] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a method and system for realizing the visualization of the aftershock fault structure, which overcomes the result of the risk assessment of the aftershock area in the prior art due to the complexity of the fault structure. The error is large, and it is impossible to accurately estimate the degree of risk of aftershocks

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  • A method and system for realizing visualization of aftershock fault structure
  • A method and system for realizing visualization of aftershock fault structure
  • A method and system for realizing visualization of aftershock fault structure

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[0049] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0050] The first embodiment provided by the present invention is a method for realizing visualization of aftershock fault structures, such as figure 1 shown, including:

[0051] Step S1. Obtain aftershock point cloud data, and establish a three-dimensional view point cloud based on the obtained aftershock point cloud data.

[0052] In this step, the aftershock point cloud data is obtained first, and then the acquired aftershock point cloud data is converted into a point cloud. In a specific embodiment, it can be directly obtained from earthquake catalogs or documents. Such as figure...

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Abstract

The invention provides a method and a system for realizing visualization of an aftershock fault structure. Acquired aftershock point cloud data is converted into a three-dimensional view point cloud,and the three-dimensional view point cloud is projected to a plane perpendicular to a fault to obtain a two-dimensional plane projection image; a plurality of points with linear features in the two-dimensional plane projection image are selected out, a fault plane is fitted out according to the selected points with the linear features, and the fault structure is positioned according to the fittedfault plane; and the positioned fault structure is input into a three-dimensional view to obtain a visual image of the three-dimensional fault. According to the method and the system provided by the invention, the aftershock point cloud data is converted into the visual image, so that the fault structure of an earthquake can be accurately presented, the space-time process of aftershocks can be reproduced, and technical support is provided for research personnel in earthquake mechanism recognition and earthquake risk assessment.

Description

technical field [0001] The invention relates to the technical field of geodesy, in particular to a method and system for realizing visualization of aftershock fault structures. Background technique [0002] Faulting complexity is common across all seismic faulting types (strike-slip, normal, and reverse). Usually, the fault is segmented along the strike into several approximately parallel segments with a geometrically discontinuous length of about 10-25 km, and sometimes the depth segmentation of the fault (Elliot) is also seen, in which cascade earthquakes are along the updip or down dip Tilting occurs continuously, and such a fault structure complicates the assessment of earthquake hazards. The study found that theoretical models with simplified assumptions (such as single dynamic rupture, barbot, etc.) are no longer applicable to natural faults. In 2004, the Parkfield earthquake occurred ten years later than expected in the earthquake cycle. Because the time intervals f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28G01V1/30G01V1/36
Inventor 汪驰升王新雨
Owner SHENZHEN UNIV
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