【摘要】：根據(jù)三峽庫區(qū)2007-2011年期間的日水位資料,首先對庫區(qū)水位序列進(jìn)行小波消噪,然后采用Morlet小波函數(shù)對水位消噪時間序列進(jìn)行了多時間尺度小波分析,揭示三峽水庫水位調(diào)度變化的多時間尺度的結(jié)構(gòu)特性,并分析不同尺度下的水位調(diào)度周期性變化規(guī)律.結(jié)果表明:各年日水位調(diào)度變化出現(xiàn)階段性的變化特點(diǎn),主要集中在6-12月,且其波幅明顯高于其他月份;不同年份水位調(diào)度存在不同時間尺度的變化周期,2007-2011年周期性分析結(jié)果顯示,2007年的變化周期為57d和17d;2008年的變化周期為56d和9d;2009年的變化周期為64d和36d;2010年的變化周期為64d和25d;2011年的變化周期為64d.
[Abstract]:According to the daily water level data of the three Gorges Reservoir area from 2007 to 2011, wavelet denoising is carried out for the water level sequence of the reservoir area first, and then the multi-time scale wavelet analysis of the water level denoising time series is carried out by using the Morlet wavelet function. This paper reveals the structural characteristics of multi-time scales of water level operation in three Gorges Reservoir, and analyzes the regularity of periodic water level operation in different scales. The results show that the variation of daily water level in each year is characterized by periodic changes, mainly in June-December, and its amplitude is obviously higher than that in other months. The results of the periodic analysis for 2007-2011 show that the period of change in 2007 is 57 days and 17 days; in 2008, 56 days and 9 days; in 2009, 64 days and 36 days; and in 2010, the change cycle is 64 days and 36 days. The period of change was 64 d and 25 d, respectively, and the period of change in 2011 was 64 d.
【作者單位】： 三峽大學(xué)水利與環(huán)境學(xué)院;
【分類號】：X832

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