Study on the characteristics of water level during the flood season in the Poyang Lake, China. Issue 3 (June 2020)

• Record Type: Journal Article
• Authors: Lei, Wentao; Ding, Bing; Kong, Weina; Huang, Ping
• Is Part Of: IOP conference series. Volume 510:Issue 3(2020)
• Publication Date: 2020-06
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/510/3/032012
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: Characteristics analysis on the water level in the Poyang Lake, China during the flood season in 1956-2012 are presented, including the trend test, abrupt change detection and periodic identification. The Mann-Kendall test and Spearman's rho test were conducted with results showing no significant trend in both the flood season averaged WLs and monthly averaged WLs in the Poyang Lake. The sequential Mann-Kendall test and Pettitt test were carried out and showed no significant abrupt change in trend of WLs as well. Besides, the Morlet continuous wavelet transform was applied to identify the periodic characteristics in trend of WLs. The results indicated that there were three types scale of periodic component, in which the periodic oscillation in 35 years was the first main period of the annual flood season averaged WLs with basically two oscillations, while the periodic oscillation in 11 years and 5 years were the second and third main periods, respectively.