海原甘盐池井水位固体潮效应分析

Analysis of the Solid Tide Effect on the Water Level of Ganyanchi Well in Haiyuan

摘要: 利用频谱分析、调和分析等方法，分析了海原甘盐池地震观测井水位的固体潮效应。引起甘盐池井水位变化的主要潮汐分波主要有M₂波、S₂波、O₁波、K₁波和N₂波，且S₂波振幅最大。潮汐因子计算结果表明甘盐池井含水层裂隙较发育，存在破碎和风化现象，与外界存在一定水力联系。各分波存在周期短的波其相位滞后通常比较小的现象。可选择M₂波来分析甘盐池井水位的潮汐因子、潮汐因子误差、相位滞后、相位滞后误差和观测幅度等参数。

Abstract: Using methods such as spectral analysis and harmonic analysis, the solid tide effect of water level in the seismic observation well of Ganyanchi, Haiyuan was analyzed. The main tidal component waves causing changes in the water level of the Ganyanchi well include M₂ wave, S₂ wave, O₁ wave, K₁ wave, and N₂ wave, with the S₂ wave having the largest amplitude. The calculation results of the tidal factors indicate that the aquifer fractures in the Ganyanchi well are relatively developed, with phenomena of fragmentation and weathering, and there is a certain hydraulic connection with the outside. For each component wave, there is a phenomenon where waves with shorter periods usually have smaller phase lags. The M₂ wave can be selected to analyze parameters such as tidal factors, tidal factor errors, phase lag, phase lag errors, and observed amplitude of the well water level in Ganyanchi.