作者: D. Labat , J. Masbou , E. Beaulieu , A. Mangin
DOI: 10.1016/J.JHYDROL.2011.09.010
关键词: Hydrology (agriculture) 、 Scaling 、 Power law 、 Detrended fluctuation analysis 、 Groundwater 、 Watershed 、 Karst 、 Hydrology 、 Environmental science 、 Temporal scales
摘要: Summary This contribution presents a study of discharge variability at two karst springs outlet in southwestern France and aims presenting the Detrended Fluctuation Analysis (DFA), which method is not very usual hydrology, to community interested investigating scaling behavior hydrological responses. Several studies have already highlighted existence power law spectral variance distribution signals such as rainfall rates, stream flow groundwater levels. provides evidence for characteristic scales that correspond different physical responses system depending on its complexity occurring distinct temporal scales. We derive this particular karstic watersheds, particular, assessment time interval watershed rainfall. Based DFA analysis relying unique high resolution long-term database, we provide response French watersheds. The series fluctuations daily, half hourly 3-min sampling rate allows detect fluctuation from 1 h up 100-h, 100-h 1-year larger than 1 year. can also be useful levels or chemical conductance deserves more largely disseminated hydrology valuable complement Fourier wavelet analyses.