He Sulan, Song Lianchun. The low frequency oscillation characteristics of typical drought/flood in the low and middle reaches of Huanghe River. J Appl Meteor Sci, 1993, 4(4): 402-407.
Citation:
He Sulan, Song Lianchun. The low frequency oscillation characteristics of typical drought/flood in the low and middle reaches of Huanghe River. J Appl Meteor Sci, 1993, 4(4): 402-407.
He Sulan, Song Lianchun. The low frequency oscillation characteristics of typical drought/flood in the low and middle reaches of Huanghe River. J Appl Meteor Sci, 1993, 4(4): 402-407.
Citation:
He Sulan, Song Lianchun. The low frequency oscillation characteristics of typical drought/flood in the low and middle reaches of Huanghe River. J Appl Meteor Sci, 1993, 4(4): 402-407.
The methods of band-pass filter and power spectrum are used to analyse atmospheric low frequency oscillation (LFO) (30—60 days) characteristics of 500hPa geopotential height field over the Northern Hemisphere in typical drought/flood year in the low and middle reaches of Huanghe River. The facts can be drawn as follows: The characteristics of LFO in summer drought appear that longer period and higher spectrum value occurred in Bejkal Lake region and shorter period and lower spectrum value in Ural, while the characteristics of LFO in flood year in Ural, Bajkal lake and subtropical regions are contrary to those in drought year
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