水質時系列의 週期性分析 = Periodicity Analysis of Water Qua1ity at Guii

다국어 초록 (Multilingual Abstract)

The stochastic variations were analyzed periodicity by autocorrelation, 1ariance spectrum and Fourier series. These time series inc1uded hourly and hour1y mean observations on DO, water temperature and air temperature which measured by automatic recording instrument at Guü from 1, Jan., 1986 to 23 , Feb., 1986,
The results of study were as fo11ows:
1. Autocorrelation coef. (1ag time 120) OO( 에= 0.9705), WT( 까 = 0.9890), and AT( 까 = 0.9874) were deeply related. 00 and AT c1early showedr 24-hour periodicities w뻐e WT showed 23-26 hour periodicity.
2. Spectra1 density showed high at 24 hour in e h item and a11 of them showed weak peak at 12 hour.
3. The explained variance, which was a measure of the contribution of periodic function to the original time series, varied high 90.8 - 94,7%. This results showed that water qualities at Guii were affected deterministic components.

목차 (Table of Contents)

• 1. 績論
• ll. 調査對象 및 調査期間
• lll. 結果및 考察
• lV. 結論