DOI: 10.1007/s11069-020-03894-0
论文题名: A comparative study of the wind characteristics of three typhoons based on stationary and nonstationary models
作者: Huang P. ; Xie W. ; Gu M.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 101, 期: 3 起始页码: 785
结束页码: 815
语种: 英语
中文关键词: Boundary layer
; EPSD
; Hurricane
; Nonstationary model
; Turbulence characteristics
; Typhoon
英文关键词: atmospheric modeling
; comparative study
; gust
; numerical model
; transform
; turbulence
; typhoon
; wind velocity
; China
; Fujian
英文摘要: This study presents the results of a comparative study of the wind characteristics of three typhoons presenting similar characteristics, based on stationary and nonstationary models. The original data were collected at four different heights along the seaside of the Fujian Province (China), where the typhoons passed through. First, the run-test method and discrete wavelet transform were employed to evaluate the stationarity and extract the time-varying mean wind speed after data filtering. Then, the gust factor, turbulence intensity and turbulence integral scale were compared. The results demonstrated that the wind characteristics described by the nonstationary model were more centralized and stable than those obtained by the stationary model. Lastly, the power spectral density and evolutionary power spectral density (EPSD) were compared, revealing that the von Karman spectra fitted well the measured spectra. In addition, two methods for the analysis of nonstationary wind spectra were compared. The direct extension from stationary model to nonstationary model was found not to be reasonable from the results of this comparison. Considering the instantaneous energy concentration shown in the EPSD, a nonstationary approach is recommended when analyzing near surface typhoon wind data. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168530
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
Recommended Citation:
Huang P.,Xie W.,Gu M.. A comparative study of the wind characteristics of three typhoons based on stationary and nonstationary models[J]. Natural Hazards,2020-01-01,101(3)