堪察加半岛水文地球化学和地声信号中的互相关地震前兆
Cross-Correlation Earthquake Precursors in the Hydrogeochemical and Geoacoustic Signals for the Kamchatka Peninsula
摘要：
通过对不同性质地球物理信号之间的相关动力学分析，提出了一种新的地震前兆类型。使用闪烁噪声光谱学的框架内引入的双参数交叉关联函数，一般的统计物理方法来分析时间序列的前兆。我们考虑一个例子的互相关分析的水盐度时间序列，地下水的化学成分的一个不可分割的特性，和地质声发射记录在G-1钻孔在堪察加半岛的时间框架，从2001年到2003年，其特征在于由一个序列的三组显着的震波迹象。发现每组震波迹象的互相关前兆分别发生在最强地震前27、31和35天。与此同时，信号本身的异常仅在一组地震的地声发射中观察到。
英文摘要：
We propose a new type of earthquake precursor based on the analysis of correlation dynamics between geophysical signals of different nature. The precursor is found using a two-parameter cross-correlation function introduced within the framework of flicker-noise spectroscopy, a general statistical physics approach to the analysis of time series. We consider an example of cross-correlation analysis for water salinity time series, an integral characteristic of the chemical composition of groundwater, and geoacoustic emissions recorded at the G-1 borehole on the Kamchatka peninsula in the time frame from 2001 to 2003, which is characterized by a sequence of three groups of significant seismic events. We found that cross-correlation precursors took place 27, 31, and 35 days ahead of the strongest earthquakes for each group of seismic events, respectively. At the same time, precursory anomalies in the signals themselves were observed only in the geoacoustic emissions for one group of earthquakes.
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