Processing method for automatically extracting body waves from passive source seismic data

A technology for automatic extraction of seismic data, applied in seismic signal processing, seismology, geophysical measurement, etc., can solve the problems of weak body wave energy and weak body wave energy, and achieve the effect of weak body wave energy and elimination of coherent noise.

Inactive Publication Date: 2021-06-18
中国自然资源航空物探遥感中心
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Problems solved by technology

However, in practice, the ideal conditions cannot be satisfied at all. The signals collected by the geophone are usually dominated by surface waves and other coherent noises, and the energy of body waves is relatively weak. Therefore, only by suppressing and eliminating surface waves and coherent noises can we extract weaker body wave energy

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  • Processing method for automatically extracting body waves from passive source seismic data
  • Processing method for automatically extracting body waves from passive source seismic data
  • Processing method for automatically extracting body waves from passive source seismic data

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[0033] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of the invention is not limited by the specific embodiments.

[0034] Unless otherwise clear, otherwise, in the entire specification and claims, the term "comprising" or "comprising" or "comprising" or the like will be understood to include the states or components or components, and Other components or other components are not excluded.

[0035] figure 1 A simple flow diagram of the processing method of automatically extracting the body wave in passive seismic data in accordance with an embodiment of the present invention. figure 2 It is a schematic diagram of a data intercept process of the processing method of automatically extracting a body wave in passive seismic data according to an embodiment of the present invention. image 3 It is a schematic diagram of a data selection proc...

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Abstract

The invention discloses a processing method for automatically extracting body waves in passive source seismic data. The processing method comprises the following steps: carrying out data interception on original data; carrying out data selection on the intercepted data; performing time domain strong amplitude control on the selected data; performing frequency domain strong amplitude control on the data subjected to the time domain strong amplitude control; and outputting data. Therefore, according to the processing method for automatically extracting the body waves from the passive source seismic data, low-frequency surface waves in passive source seismic records can be effectively recognized and suppressed, coherent noise is eliminated, and therefore weak body wave energy is highlighted.

Description

Technical field [0001] The present invention relates to the field of passive seismic technologies, particularly with respect to a method of automatically extracting a body wave in passive source seismic data. Background technique [0002] Based on cross-related passive source seismic interference measurement is a potential, economic effective geological and geophysical research technology. However, passive source seismic recording is often mainly based on surface waves and other coherent noise, and is still a challenging task from the passive source seismic record. [0003] Ideally, that is, when the noise is evenly distributed, the signal recorded in the surface of the surface can be reconstructed in a wave field recorded in one detection point position by cross-correlation, as if there is a source of a source in another detection point position. However, in practice, it is impossible to meet the ideal conditions. The signals collected by the detector are often mainly based on s...

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Application Information

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IPC IPC(8): G01V1/30G01V1/36
CPCG01V1/307G01V1/36G01V2210/30
Inventor 王林飞熊盛青方捷刘国峰薛典军闫浩飞何辉周文月李芳
Owner 中国自然资源航空物探遥感中心
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