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B-value space-time scanning method, system and device

A time-space scanning and time-scanning technology, applied in the direction of measuring devices, seismology, instruments, etc., can solve the problems of no earthquake prediction value, lower earthquake risk level, too large space area, etc.

Pending Publication Date: 2020-10-13
NAT INST OF NATURAL HAZARDS MINISTRY OF EMERGENCY MANAGEMENT OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, before the Wenchuan Earthquake in 2008, there was no observed time anomaly change characteristic of the b value, so it can be said that there was no warning before the Wenchuan Earthquake, and many seismologists even believe that the Longmenshan fault zone where the Wenchuan Earthquake occurred It is a place where major earthquakes will not occur, and the earthquake hazard level of the area is lowered
[0003] Existing technology is only time-scanning the b value along the seismic fault zone or source area, often because the selected spatial region is too large (the anomaly is smoothed out, so the anomaly cannot be identified) or too small (the number of earthquakes is too small to calculate the b value). The error of the value is too large to identify the earthquake precursor) can not find the real b-value pre-earthquake anomaly (or precursor)
In addition, the source area of ​​future earthquakes is unknown, so the current b-time scanning method cannot identify the precursor anomalies of future major earthquakes at all, and has no value in earthquake prediction

Method used

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Examples

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Embodiment 1

[0049] An embodiment of the present invention provides a b-value space-time scanning device, such as Figure 4 As shown, it includes: a memory 40, a processor 42, and a computer program stored on the memory 40 and operable on the processor 42. When the computer program is executed by the processor 42, the following method steps are implemented:

[0050] Step 101, determine the scanning area, divide the scanning area into a plurality of grid nodes of the same size; in step 101, determine the square scanning area, divide the square scanning area according to the size of degree a, divide the square scanning area into multiple A grid node of a degree×a degree, where a is greater than 0.

[0051] Step 102, carry out the time scanning of b value in the range of radius with predetermined length for each grid node, obtain the time change curve of b value; The predetermined length is determined according to the spatial scale of the earthquake source area; The time scan of values ​​spe...

Embodiment 2

[0059] An embodiment of the present invention provides a computer-readable storage medium, where a program for realizing information transmission is stored on the computer-readable storage medium, and when the program is executed by the processor 42, the following method steps are implemented:

[0060] Step 101, determine the scanning area, divide the scanning area into a plurality of grid nodes of the same size; in step 101, determine the square scanning area, divide the square scanning area according to the size of degree a, divide the square scanning area into multiple A grid node of a degree×a degree, where a is greater than 0.

[0061] Step 102, carry out the time scanning of b value in the range of radius with predetermined length for each grid node, obtain the time change curve of b value; The predetermined length is determined according to the spatial scale of the earthquake source area; The time scan of values ​​specifically includes:

[0062] According to the N-year...

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Abstract

The invention discloses a b-value space-time scanning method, system and device. The method comprises the steps: determining a scanning region, and dividing the scanning region into a plurality of grid nodes with the same size; carrying out b-value time scanning on each grid node within the range with the preset length as the radius to obtain a b-value time change curve; and obtaining b-value timechange curves of all grid nodes, and comparing each b-value time change curve with a template curve to obtain a b-value time change curve with the highest similarity. By adopting the method, the earthquake precursor can be effectively identified, and the prediction and forecast work of the large earthquake can be carried out.

Description

technical field [0001] The invention relates to the technical field of earthquake prediction, in particular to a b-value time-space scanning method, system and device. Background technique [0002] In the prior art, the seismicity b-value is a parameter describing the relationship between the number of large earthquakes and small earthquakes, and its value is usually 1, that is, the number of small earthquakes is more than 30 times the number of larger earthquakes one level higher than it. But in the process of earthquake gestation (before the earthquake), this value will change with time. Through a large number of studies, it has been found that the b value before the 1976 Tangshan earthquake, the 1974 Haicheng earthquake, and the 1966 Xingtai earthquake has a certain value. The law of time change, that is: usually rises before the earthquake, lasts for 2-3 years, then suddenly drops, and during the recovery period, the earthquake will soon occur. Internationally, the time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00
CPCG01V1/01
Inventor 朱守彪
Owner NAT INST OF NATURAL HAZARDS MINISTRY OF EMERGENCY MANAGEMENT OF CHINA