山东日照地区不同类型含水层地下水位多年动态变化特征及其影响因素  

Characteristic of Groundwater Level Dynamic Variation and the Potential Influence Factors in Different Aquifer Categories in Rizhao Area,Shandong Province

作　　者：杨鹏 张寿川 郭本力 杨崇敬 冯启原 吕有成 解露茜 Yang Peng;Zhang Shouchuan;Guo Benli;Yang Chongjing;Feng Qiyuan;LüYoucheng;Xie Luxi(The Eighth Institute of Geology and Mineral Resources Exploration of Shandong Province,Rizhao 276826,Shandong,China;Key Laboratory of Nonferrous Metal Ore Exploration and Resource Evaluation of Shandong Provincial Bureau of Geology and Mineral Resources,Rizhao 276826,Shandong,China;Rizhao Big Data Research Institute of Geology and Geographic Information,Rizhao 276826,Shandong,China;Rizhao Key Laboratory of Land Quality Evaluation and Pollution Remediation,Rizhao 276826,Shandong,China;Chinese Academy of Geological Sciences,Beijing 100037,China)

机构地区：[1]山东省第八地质矿产勘查院,山东日照276826 [2]山东地矿局有色金属矿找矿与资源评价重点实验室,山东日照276826 [3]日照地质地理信息大数据研究院,山东日照276826 [4]日照市土地质量评价与污染修复重点实验室,山东日照276826 [5]中国地质科学院,北京100037

出　　处：《吉林大学学报（地球科学版）》2024年第3期967-979,共13页Journal of Jilin University：Earth Science Edition

基　　金：日照市城市地质调查项目(SDGP371100202102000475);中国地质调查局项目(DD20221677-2);中央财政基本科研业务费资助项目(JKY202004)。

摘　　要：自然条件下沿海地区地下水与海水呈现动态平衡,但地下水超采会破坏二者间平衡关系,进而引发一系列地质环境问题。地下水动态变化受多种因素影响呈现非平稳信号变化特征,传统时间序列分析方法无法从多角度准确描述时间序列动态变化特征,基于时间域和频率域分解的小波分析方法为探究地下水动态变化特征及影响因素提供了便利条件。利用山东日照地区不同类型含水层3口监测井1996—2015年间地下水位和降雨量监测数据,应用连续小波变换法和小波相干分析法开展研究,结果表明:不同类型含水层地下水位动态变化周期特征存在差异,荻水监测井(第四系松散岩类孔隙水含水层)地下水位呈现年际、4~5 a和11 a周期变化,莒县地震办监测井(基岩裂隙含水层)和东莞中学监测井(碳酸盐岩类裂隙岩溶水含水层)地下水位均呈现11 a周期和14 a强趋势项变化,总体而言,该地区降雨量呈现年际周期、4~5 a周期、11 a周期变化以及14 a强趋势项变化;降雨量周期变化是导致不同类型含水层地下水位呈现年际周期变化和多年周期变化的主要因素;不同含水层地下水位对降雨量响应时间存在差异是造成其呈现不同周期变化特征的主要原因。Under the natural conditions,there is the dynamic balance between the groundwater and sea in the coastal region.However,the overexploitation of groundwater causes the imbalance between them,which also induces the various of environmental problems.The analysis methods of traditional time series cannot accurately reveal the dynamic variation characteristic in both time and frequency domains,while wavelet analysis methods provide convenient way to explore the dynamic variation characteristics and external influence factors of groundwater.The continuous wavelet transform and wavelet coherence analysis are used to analyze the time series data of groundwater level in three monitoring wells and precipitation in Rizhao area during the interval of 1996-2015.The results show that:The periodic characteristics of groundwater level variation in different aquifer categories are different.The groundwater level in Dishui monitoring well(pore water of shallow loose rocks)shows periodic variation characteristics which are one year,4-5 a and 11 a.The groundwater level in Earthquake Bureau of Juxian well(bedrock fissure water)and Dongguan High School well(carbonate fissure karst water)show the periodic variation of 11 a and the strong tendency of 14 a.The precipitation in Rizhao area shows several different periodic variations,including one year,4-5 a,11 a and the strong tendency of 14 a.The periodic variation of precipitation in Rizhao area is the important influence factor on the variation of groundwater level which show the periodic variation of one year and several years.The lag time between the groundwater change and the variation of precipitation in different aquifer type is different,which is the main reason for the diversity characteristic of groundwater level periodic variation in different aquifer type.

关 键 词：地下水动态 连续小波变换 小波相干 时滞性 日照地区 

分 类 号：P641.8[天文地球—地质矿产勘探]