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Mathematical Model for developing Data-Base System of Environments in Coastal Sea Area, 2nd Report : Seasonal-adjustment model to grasp of the feature of water quality

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  • 沿岸海域データベース構築に関する基礎的研究 第2報 : 季節調整法の応用による水質変動のモデル化と特徴の把握
  • エンガン カイイキ データベース コウチク ニ カンスル キソテキ ケンキュウ ダイ2ホウ キセツ チョウセイホウ ノ オウヨウ ニ ヨル スイシツ ヘンドウ ノ モデルカ ト トクチョウ ノ ハアク

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In the previous paper, the authors showed that the AR and VAR models were applicable to analyse the data sets of seawater quality that have been measured in Osaka bay for long period of time. They pointed out, at the same time, that there were several defeats in those models, such that coefficients derived in the model are not necessarily related with the fluctuations of measured data. In the present paper, the authors proposed an improved model taking the long term trend, seasonal changes and short period fluctuation into account separately. They showed that the proposed model is applicable for analysing data sets of seawater quality measured at various points in Osaka bay.


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