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Method for detecting nuclear explosion seismic event in specific area

A technology for specific regions and events, applied in seismology, seismic signal processing, measuring devices, etc., can solve problems such as slow response speed, achieve the effects of shortened response time, real-time fast detection, and improved response speed

Active Publication Date: 2016-06-15
CTBT BEIJING NAT DATA CENT
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for detecting nuclear explosion earthquake events in a specific area, which solves the problem of slow response speed of the global grid search method when implementing external detection tasks

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  • Method for detecting nuclear explosion seismic event in specific area
  • Method for detecting nuclear explosion seismic event in specific area
  • Method for detecting nuclear explosion seismic event in specific area

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Embodiment Construction

[0024] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail.

[0025] The invention provides a method for detecting a nuclear explosion earthquake event in a specific area, which is characterized in that it comprises the following steps:

[0026] S1. Select suitable earthquake monitoring stations to set up a nuclear explosion earthquake event monitoring network for a specific area. The specific steps are as follows:

[0027] S1.1. Calculate the maximum distance D from the i-th station to a specific area according to formula (1) i :

[0028] D. i =max(distance(sta i ,range))(1)

[0029] In the formula sta i is the latitude and longitude coordinates of the i-th station, range is the latitude and longitude range of the specific area, distance is the distance calculation function between the station and the specific area, and max is the maximum v...

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Abstract

The invention discloses a method for detecting a nuclear explosion seismic event in a specific area. The method comprises the following steps: establishing a monitoring station network for the nuclear explosion seismic event in the specific area; obtaining real-time monitoring data of each station in the monitoring station network, and providing signal monitoring point time of the ith station; calculating time range when each hypothetical event occurs; adn when the occurrence time ranges of the hypothetical events calculated by three or more than three stations have an overlapped region, deeming that one seismic event can be formed, wherein the time range of the seismic event is the overlapped time region, and thus it is concluded that the specific area may have the nuclear explosion seismic event. The method adopts a trigger-type "hypothesis-verification" event detection mode to process the signal detection result in real time, thereby greatly reducing response time, effectively improving response speed of external monitoring tasks and achieving a near-real-time rapid detection effect of the seismic event in the specific area.

Description

technical field [0001] The invention belongs to the field of earthquake detection, and in particular relates to a method for detecting nuclear explosion earthquake events in a specific area, which can quickly detect nuclear explosion earthquake events in a specific area. Background technique [0002] Seismic monitoring is the main technology stipulated in the Comprehensive Nuclear-Test-Ban Treaty to monitor nuclear explosion seismic events caused by underground nuclear tests. The event detection method is a global grid search. First, signal detection is performed on the monitoring data of seismic stations, and after calculating the signal characteristics, the near-seismic and far-seismic classification and relative grouping of seismic phases are carried out. The signals are correlated through the global grid file, and iteratively The event detection list is obtained after event hypothesis and redundant event exclusion. Such as figure 1 As shown, the existing data processin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30
CPCG01V1/30G01V2210/1429G01V2210/6167G01V2210/65
Inventor 刘哲函唐恒专王晓明唐伟王燕李健李靓王媛
Owner CTBT BEIJING NAT DATA CENT
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