Investigation of karstic hydrological processes of Niangziguan Springs (North China) using wavelet analysis

• DOI: 10.1002/hyp.8265
• Publication Date: 2011-09-01T00:09:30Z
• Authors: Yonghong Hao; Guoliang Liu; Huamin Li; Zhongtang Li; Jiaojuan Zhao; Tian‐Chyi J. Yeh
• Keywords: Morlet wavelet; Water cycle

Abstract Niangziguan Spring complex is the largest karst spring in North China. We investigate hydrological processes by using Morlet wavelet transform analysis and cross based on monthly precipitation from 1958 to 2010 discharge 2009. From coefficients of Springs Basin, we find that are characterized multi‐scale features time domain, energy distribution signal highly irregular across scales. Although eventually becomes infiltrating propagating through formations, signals attenuated. The results also show Basin has main periodic components 1‐, 5‐, 12‐, 17‐year periods with alternating wet–drought cycle. Similarly, periods, but 12‐year periodicity not reflected discharge, which filtered aquifers. reveal share common 17 years. This means those high long timescales can penetrate aquifer be whereas other modified. Copyright © 2011 John Wiley & Sons, Ltd.