Multifractal analyses of daily rainfall time series in Pearl River basin of China
Publication in refereed journal


摘要The multifractal properties of daily rainfall time series at the stations in Pearl River basin of China over periods of up to 45 years are examined using the universal multifractal approach based on the multiplicative cascade model and the multifractal detrended fluctuation analysis (MF-DFA). The results from these two kinds of multifractal analyses show that the daily rainfall time series in this basin have multifractal behavior in two different time scale ranges. It is found that the empirical multifractal moment function K (q) of the daily rainfall time series can be fitted very well by the universal multifractal model (UMM). The estimated values of the conservation parameter H from UMM for these daily rainfall data are close to zero indicating that they correspond to conserved fields. After removing the seasonal trend in the rainfall data, the estimated values of the exponent h(2) from MF-DFA indicate that the daily rainfall time series in Pearl River basin exhibit no long-term correlations. It is also found that K(2) and elevation series are negatively correlated. It shows a relationship between topography and rainfall variability. (C) 2014 Elsevier B.V. All rights reserved.
著者Yu ZG, Leung Y, Chen YD, Zhang Q, Anh V, Zhou Y
期刊名稱Physica A: Statistical Mechanics and its Applications
頁次193 - 202
關鍵詞Daily rainfall time series; Multifractal detrended fluctuation analysis; Multifractal property; Universal multifractal model
Web of Science 學科類別Physics; Physics, Multidisciplinary; PHYSICS, MULTIDISCIPLINARY

上次更新時間 2021-19-09 於 00:05