APPLICATION OF WAVELET TRANSFORM TO ANALYSIS OF TRACE HYDROGEN CONCENTRATION DATA IN TIANSHUI,GANSU PROVINCE
Based on the db4 wavelet transform analysis principle,the trace hydrogen observation data from Maoji,Mayao and Yuanjiazhuang stations in Tianshui,Gansu Province from January 2023 to January 2024 were analyzed,and the low frequency and high frequency information in the data were effectively separated.The results show that the wavelet transform method has a strong function to identify the information of different frequencies,and can reflect the abnormal phenomena of earthquake precursors more directly and clearly.The study of seismic examples shows that wavelet analysis is an effective method to eliminate the noise of trace hy-drogen observation data and identify the short and medium term earthquake anomalies.
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