Patterns of temporal scaling of groundwater level fluctuation

JOURNAL OF HYDROLOGY

卷:536

Article

Yu, Xue¹  Ghasemizadeh, Reza¹  Padilla, Ingrid Y.²  Kaeli, David³  Alshawabkeh, Akram¹ 

[1] Northeastern Univ, Dept Civil & Environm Engn, Boston, MA 02115 USA

[2] Univ Puerto Rico, Dept Civil Engn & Surveying, Mayaguez, PR 00682 USA

[3] Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA

关键词: Detrended fluctuation analysis (DFA);    Wavelet;    Mono- and multi-fractality;    Karst aquifer;    Puerto Rico;   

DOI  :  10.1016/j.jhydrol.2016.03.018

来源: Elsevier

【 摘 要 】

We studied the fractal scaling behavior of groundwater level fluctuation for various types of aquifers in Puerto Rico using the methods of (1) detrended fluctuation analysis (DFA) to examine the monofractality and (2) wavelet transform maximum modulus (WTMM) to analyze the multifractality. The DFA results show that fractals exist in groundwater fluctuations of all the aquifers with scaling patterns that are anti-persistent (1 < beta < 1.5; 1.32 +/- 0.12, 18 wells) or persistent (beta > 1.5; 1.62 +/- 0.07, 4 wells). The multifractal analysis confirmed the need to characterize these highly complex processes with multifractality, which originated from the stochastic distribution of the irregularly-shaped fluctuations. The singularity spectra of the fluctuation processes in each well were site specific. We found a general elevational effect with smaller fractal scaling coefficients in the shallower wells, except for the Northern Karst Aquifer Upper System. High spatial variability of fractal scaling of groundwater level fluctuations in the karst aquifer is due to the coupled effects of anthropogenic perturbations, precipitation, elevation and particularly the high heterogeneous hydrogeological conditions. (C) 2016 Elsevier B.V. All rights reserved.

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