潮汐作用对莱州湾南岸冬季地下水位的影响研究

发布时间：2018-11-11 07:25

【摘要】：潮汐波动具有稳定的周期性,当地下水受其影响时,这种周期性在地下水位变化中必会有所反映,但同时也会受到人为开采地下水、降雨等因素的影响而很难被识别出来。通过谱分析认为莱州湾南岸地下水位同潮位共同存在12和24h两个主要周期,采用傅立叶变化与去趋势分析结合的方法提取出了地下水位中受潮汐影响的频率成分,并利用自相关分析的方法对处理后的地下水位数据与潮位数据进行了对比分析。结果显示,虽然莱州湾南岸地下水受人为开采地下水影响显著,但通过去除长期趋势和提取频率的方法可以有效提取冬季地下水位中受潮汐作用影响的因素,从而为其他研究提供了一种有效的原始数据处理方法。
[Abstract]:Tidal fluctuation has a stable periodicity, when groundwater is affected by it, this periodicity will be reflected in the change of groundwater level, but at the same time, it will also be affected by factors such as artificial exploitation of groundwater, rainfall and so on, so it is difficult to be recognized. Through spectrum analysis, it is considered that there are two main periods of 12 and 24 hours of groundwater level and tidal level in the south coast of Laizhou Bay. The frequency components of groundwater table affected by tide are extracted by the method of Fourier variation and trend analysis. The data of groundwater level and tidal level were compared and analyzed by autocorrelation analysis. The results show that although the groundwater in the south coast of Laizhou Bay is significantly affected by the artificial exploitation of groundwater, the factors affected by the tidal action in the groundwater table in winter can be effectively extracted by removing the long-term trend and the extraction frequency. Thus, it provides an effective raw data processing method for other research.
【作者单位】：海洋沉积与环境地质国家海洋局重点实验室;国家海洋局第一海洋研究所;青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室;
【基金】：国家自然科学基金项目——滨海地区地下水对潮汐作用的响应机制研究(41406072) 中央级公益性科研院所基本科研业务费专项资金资助项目——滨海地区地下水对潮汐作用的响应机制研究(2015P10)
【分类号】：P641.6;P731.23

【相似文献】