Analysis of the Statistical Characteristics of the Turbulent Data at Maqu Area in the Upper Yellow River
Received date: 2011-12-30
Revised date: 2012-04-16
Online published: 2012-08-10
Turbulent motion is the basic characteristics of atmospheric motion and main method of exchange of matter and energy. In this paper, the observed turbulence data from Yellow River source region climate and environment observation and research station is used to calculate and analyze the turbulence transportation characteristic. The turbulence statistical characteristicσu/u*，σv/u*，σw/u* versus stability z/L are in agree with the “1/3”law, under neutral stratification condition,σu/u*，σv/u*，σw/u* is near to a constant 3.42, 3.34, 1.02; The turbulence kinetic energy increases when wind speed increases, especially in day time; The turbulent kinetic energy is smaller in the night time than in day time, and the change trend of turbulent kinetic energy slower in night time than in day time; The change of turbulent kinetic energy virus stability parameter is obvious, and the maximum is under neutral stratification condition. The turbulent intensity increases when wind speed increases; When the wind speed is bigger than 0 and less than 2 m/s, the change of turbulent intensity is very obvious, when the wind speed is bigger than 5 m/s, the change of turbulent intensity is not obvious.
Li Suosuo , Lü Shihua , Gao Yanhong , Ao Yinhuan , Liu Yuanpu . Analysis of the Statistical Characteristics of the Turbulent Data at Maqu Area in the Upper Yellow River[J]. Advances in Earth Science, 2012 , 27(8) : 901 -907 . DOI: 10.11867/j.issn.1001-8166.2012.08.0901
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