标准年动态曲线形态分析方法在地震地下流体氡数据处理中的应用

doi:10.12196/j.issn.1000-3274.2023.01.013

Abstract

Abstract: Background information and precursor information are the main observation data of a station. It is a key link to improve the effectiveness of seismic activity monitoring and prediction through accurate identification and correct extraction of precursor information. In this paper, the standard-year dynamic curve morphological analysis method was used to detrend the daily water (gas) radon value of 8 underground fluid stations in Gansu Province. The smoothing of the “forward slip” of the years of daily value was carried out and the mean square error as the upper and lower limits of the smooth curve was calculated. The abnormal values exceeding the upper and lower limits were used as anomalous information for earthquake case statistics, so as to gain earthquake reflecting ability and spatial response characteristics of the precursory anomalies of water (gas) radon at 8 underground fluid stations. It is concluded from the study that the standard annual dynamic curve analysis method could be an effective method to identify the precursory short-impending anomaly information of groundwater (gas) radon, and expected to play an important technical support role in the precursory data analysis and abnormal processing of underground fluids.

Key words: Standard annual dynamic curve, Radon, Method for precursor information extraction, Earthquake prediction

CLC Number:

P315.7

WANG Yang-hong, SU He-jun, ZHANG Hui, LI Chen-hua, ZHOU Hui-ling. Application of Standard Annual Dynamic Curve Method in Radon Data Processing of Seismic Fluid Monitoring Station[J]. EARTHQUAKE, 2023, 43(1): 171-184.

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Application of Standard Annual Dynamic Curve Method in Radon Data Processing of Seismic Fluid Monitoring Station

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