基于小波分析的地下水水位与降水的周期性特征研究  

Cyclical Characteristics of Groundwater Level and Precipitation Based on Wavelet Analysis

作　　者：郭琳[1] 宫辉力[1] 朱锋[1] 郭小萌[1] 周超凡[1] 邱琳[2] 

机构地区：[1]首都师范大学三维信息获取与应用教育部重点实验室,北京100048 [2]河南大学环境与规划学院,河南开封475001

出　　处：《地理与地理信息科学》2014年第2期35-38,F0003,共5页Geography and Geo-Information Science

基　　金：国家自然科学基金项目(41171335/D010702);国家基金重点项目(41130744/D0107);国家973计划前期研究专项(2012CB723403);北京市自然科学基金重点项目(8101002);北京岩溶水资源勘查评价工程项目

摘　　要：选取北京西山地区2000-2010年6个第四系承压水长观孔逐月观测水位及气象站降水数据,运用连续小波变换方法,对降水量和地下水水位的多时间尺度变化特征进行分析,并采用交叉小波变换探讨了二者关系.结果表明：1）北京西山地区降水具有9～16个月的主振荡周期,持续时间较长,不同季节的多周期特征明显;2）承压水水位存在12个月左右的振荡周期,但持续时间较短,且各观测孔水位周期性特征差异较大;3）交叉小波变换结果表明该地区降水量和承压水水位具有显著的共振关系,地下水水位峰值出现时间一般滞后降水峰值约5～7个月.The quaternary confined water level data of 6 observed holes and the precipitation data of meteorological stations within western mountain area in Beijing are chosen.By using the method of continuous wavelet,the multiple time scales characteristic of precipitation and groundwater level are analyzed.On the basis,the relationship between them is illustrated by the cross wavelet transformation.The results show that：1） The precipitation in this region has 9 ～ 16 months primary oscillation periods with a long duration of time,and in different seasons,the characteristic is different.2） The oscillation period of confined water level is about 12 months but last shorter time compared to the precipitation.3） The result of cross wavelet transformation shows that precipitation and confined water level has a significant resonance relations.The peak of the groundwater level lags about 5～7 months in general.

关 键 词：降水 承压水 周期 连续小波 交叉小波 

分 类 号：P641.2[天文地球—地质矿产勘探]