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Nuclear explosion earthquake event identification method

A technology for nuclear explosions and events, applied in the field of identifying nuclear explosions and earthquake events, can solve problems such as difficulty in event identification

Active Publication Date: 2017-10-27
CTBT BEIJING NAT DATA CENT
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for identifying nuclear explosion earthquake events, which solves the problem of difficult event identification in nuclear explosion earthquake event monitoring

Method used

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  • Nuclear explosion earthquake event identification method
  • Nuclear explosion earthquake event identification method

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Experimental program
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Effect test

Embodiment

[0079] According to the method mentioned above, the nuclear explosion earthquake and natural earthquake events in a certain area were identified and tested. First, according to the event location and the seismic monitoring network, a certain seismic station was selected as the nuclear explosion seismic event identification station; the time series data of the vertical channel were intercepted at the first arrival times of the two events recorded by the station; Calculate the calculation results of the waveform complexity criterion, spectral ratio criterion and comprehensive ratio criterion, and substitute them into their respective artificial neural network models to calculate the probability of natural earthquakes, explosion earthquakes and uncertainties; for each criterion The calculated natural earthquakes, explosive earthquakes and uncertain probabilities are combined based on D-S evidence theory, and finally the identification conclusion of the event is given. Table 3 sho...

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Abstract

The invention discloses a nuclear explosion earthquake event identification method. The method is characterized by, to begin with, selecting an appropriate earthquake monitoring station as a nuclear explosion earthquake event identification station; intercepting time series data, within a certain time period, of a vertical channel of the station; according to feature difference in time domain and frequency domain as well as comprehensive feature difference in time-frequency domain of the natural earthquake and the nuclear explosion earthquake, selecting waveform complexity criterion, spectrum ratio criterion and comprehensive ratio criterion as basic criteria; and finally, through evidence combination based on the D-S evidence theory, obtaining probability obtained after the criteria are combined, and comparing the probability of each event to determine the type of an event. The method can effectively and correctly provide the identification result of the nuclear explosion earthquake event through an evidence combination method based on the D-S evidence theory; and under the condition where a single criterion is ineffective, the method can still give a correct identification conclusion.

Description

technical field [0001] The invention belongs to the identification of nuclear explosion earthquake events, and in particular relates to a method for identifying nuclear explosion earthquake events. Background technique [0002] The identification of nuclear explosion and earthquake events is the core requirement for all countries to develop national technical means for nuclear test ban verification. The event identification technologies adopted by the existing seismic data processing system are event depth, ratio of body wave magnitude to surface wave magnitude, and regional criterion high frequency Three criteria such as the P / S amplitude ratio criterion, and only the event classification of natural earthquakes are given. According to the statistical results of the criteria screening of the International Data Center of the Comprehensive Nuclear-Test-Ban Treaty Organization, these criteria only screened out about 27% of natural earthquake events, and the unscreened events ac...

Claims

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Application Information

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IPC IPC(8): G01V1/00G01V1/30
CPCG01V1/30G01V2210/123G01V1/01
Inventor 刘哲函唐恒专王晓明唐伟刘俊民王燕李靓王媛
Owner CTBT BEIJING NAT DATA CENT
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