摘要
为了解潮汐对滨海地区地下水位的影响,为相关水利工程建设和水资源开发利用提供依据,文章根据莱州湾南岸的水文观测井和潮位站的观测数据,采用时间序列分析方法和互相关分析方法,研究地下水位相对于潮位的变化频率和滞后性。研究结果表明:由于受地下卤水开采的人为干扰,与潮位相比,地下水位在较低频率时振幅较高;去长期趋势处理对于排除人为干扰效果明显,地下水位的频率振幅与潮位波动规律一致,即均存在明显的12h和24h的周期,但大部分观测井的地下水位受24h周期影响较大,这与潮位差异显著;互相关分析进一步证实地下水位与潮位具有相同频率,潮汐向陆地侵入对地下水位的影响显著,地下水位相对于潮位的滞后时间随其距平均高潮线水平距离的增加迅速上升,二者呈抛物线关系。
Using the observation data of wells and tide stations on the south area of Laizhou Bay,this paper applied time series analysis method and crosscorrelation analysis method to study the frequency and hysteresis of groundwater level relative to the tide level.The results showed that： due to the human disturbance caused by underground brine mining,the groundwater level had higher amplitude at lower frequencies than the tidal level;the long-term trend treatment had obvious effect on eliminating human disturbance,and the frequency amplitude of the groundwater level was consistent with the tidal fluctuation.There were obvious 12 h and 24 h periods among them,but the groundwater level of most wells were greatly affected by the 24 h period,which was significantly different from the tidal level;cross-correlation analysis confirmed that the groundwater level had the same frequency as the tide level.The lag time of the groundwater level relative to the tide level increased rapidly with the increase of the horizontal distance from the average high tide line,and the two were parabolic.
作者
苏乔
徐兴永
陈广泉
付腾飞
刘文全
SU Qiao1,2,3,XU Xingyong1,2,3,CHEN Guangquan1,2,3,FU Tengfei1,2,3,LIU Wenquan 1,2,3(1Key Laboratory of Marine Sedimentology and Environmental Geology，SOA,Qingdao 266061,China;2First Institute of Oceanography，SOA,Qingdao 266061,China;3Laboratory for Marine Geology，Qingdao National Laboratory for Marine Science and Technology,Qingdao 266061,China)
出处
《海洋开发与管理》
2018年第10期79-83,共5页
Ocean Development and Management
基金
国家自然科学基金项目(41406072)
中央级公益性科研院所基本科研业务费专项项目"滨海地区地下水对潮汐作用的响应机制研究"(2015P10)
关键词
潮汐
地下水位
时间序列分析
互相关分析
水位观测
Tide
Groundwater level
Time series analysis
Cross-correlation analysis
Water level observation
