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1、土地电的年周期变化: 土地电的观测资料表明,土地电具有较好的年周期变化,这种周期变化往往与测报点所在地的年降雨量有较好的相关关系。图1是一九七九年一月至一九八二年四月步文中学土地电SN道年变化曲线与石码地区年降雨量对照图。 从图1可见,土地电每年一、二、十二月份为低值区段,四至十月份为高值区段。而降雨量每年一、二、十二月份为枯水期,四至十月份为丰水期。地电年变化曲线呈谷——峰——谷形态,与降雨量
1. The annual cycle of land electricity: The observation data of land electricity shows that the land power has good annual cycle variation, and this cycle change often has a good correlation with the annual rainfall at the place where the survey site is located. Figure 1 is a comparison of the annual SN curve of land-use electricity in the step textbooks and the Shiyan area annual rainfall from January 1979 to April 1982. As can be seen from Figure 1, the land electricity is in the low-value section in January, December and December each year and in the high-value section from April to October. The annual rainfall in January, December and December is the dry season, from April to October for the wet period. The annual variation curve of geoelectric electricity shows valley-peak-valley morphology and rainfall