caa a22 4500 469040742 CHVBK 20180323132810.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF01581621 doi (NATIONALLICENCE)springer-10.1007/BF01581621 Estimation of periodicities in hydrologic data [Elektronische Daten] [A. Rao, G. Jeong, Fi-John Chang] Periodicites in hydrologic data are frequently estimated and studied. In some cases the periodic components are subtracted from the data to obtain the stochastic components. In other cases the physical reasons for the occurrence of these periodicities are investigated. Apart from the annual cycle in the hydrologic data, periods corresponding to the 11 year sunspot cycle, the Hale cycle and others have been detected. The conclusions from most of these studies depend on the reliability and robustness of the methods used to detect these periodicities. Several spectral analysis methods have been proposed to investigate periodicities in time series data. Several of these have been compared to each other. The methods by Siddiqui and Wang and by Damsleth and Spjotvoll, which are stepwise procedures of spectrum estimation, have not been evaluated. Two of the methods of spectral analysis proposed by Siddiqui and Wang and by Damsleth and Spjotvoll are investigated in this study by using generated and observed data. Siddiqui and Wang's method is found to be superior to the Damsleth and Spjotvoll's method. Springer-Verlag, 1992 Periodicities nationallicence hydraulic cycle nationallicence spectral methods nationallicence Rao A. School of Civil Engineering, Purdue University, 47907, W. Lafayette, IN, USA aut Jeong G. School of Civil Engineering, Purdue University, 47907, W. Lafayette, IN, USA aut Chang Fi-John Department of Agricultural Engineering, National Taiwan University, Taipei, Taiwan, 100764 R.O.C. aut Stochastic Hydrology and Hydraulics Springer-Verlag 6/4(1992-12-01), 270-288 0931-1955 6:4<270 1992 6 477 https://doi.org/10.1007/BF01581621 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01581621 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rao A. School of Civil Engineering, Purdue University, 47907, W. Lafayette, IN, USA aut NATIONALLICENCE 700 1- Jeong G. School of Civil Engineering, Purdue University, 47907, W. Lafayette, IN, USA aut NATIONALLICENCE 700 1- Chang Fi-John Department of Agricultural Engineering, National Taiwan University, Taipei, Taiwan, 100764 R.O.C aut NATIONALLICENCE 773 0- Stochastic Hydrology and Hydraulics Springer-Verlag 6/4(1992-12-01), 270-288 0931-1955 6:4<270 1992 6 477 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer