A Correlation Method for Monitoring Signals of Seismic Infrasound Co-located Stations

Abstract

The invention relates to a method for correlating monitoring signals of seismic-infrasonic identical address stations. On the basis of a Pg-Lg seismic phase pair and a Pn-Lg seismic phase pair, the seismic source position is estimated by means of a seismic signal, an infrasonic signal is searched and matched, recorded signals of a seismic array station, a three-component seismic station and an infrasonic station can be correlated, and monitoring signals of the seismic station and the infrasonic station which are incompletely on the identical address can be correlated. According to the invention, regional events of 25 seismic-infrasonic identical address stations of an international infrasonic monitoring system can be correlated quickly, on the basis of the seismic station and the infrasonic station which are on the identical address, regional explosion events can be identified relatively accurately, and global infrasonic event processing and analyzing pertinency and efficiency can be improved. The fact that two kinds of waveform monitoring methods including the seismic monitoring method and the infrasonic monitoring method which are distributed on the identical address are combined for observing the regional events, and limited stations are utilized to monitor and identify small-yield explosion events is achieved.

Description

technical field [0001] The invention belongs to the field of earthquake monitoring, and in particular relates to a method for associating monitoring signals of seismic infrasound co-site stations. Background technique [0002] The joint analysis of multiple waveform monitoring technologies is one of the important development directions of earthquake monitoring and event analysis. Because infrasound monitoring has strong monitoring ability and sensitivity to atmospheric explosions, mine explosions, chemical explosions, etc., it is different from the traditional method based only on seismic signals. Compared with the event nature identification based on the characteristics, the combined use of seismic and infrasound monitoring signals for analysis can further improve the accuracy of event identification. in accordance with. Traditional earthquake monitoring and analysis requires the monitoring data of multiple seismic stations. For some specific areas, due to the low magnitud...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for correlating monitoring signals of seismic infrasound co-site stations, which can solve the problem of regional events observed at a single monitoring point, especially the earthquake and infrasound signal discrimination of repeated small-scale events such as mine blasting, and the signal cannot be automatically correlated To solve technical problems, realize the joint application of seismic and infrasound waveform monitoring technologies; it can also improve the monitoring ability, event location accuracy and nature discrimination accuracy of regional small magnitude events

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