SEDIMENT DYNAMIC BEHAVIOR AND BEACH TYPES FOUCED ON CHEMICAL ELEMENTS OF SANDS

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  • 底質の化学元素に着目した沿岸域の漂砂と海浜特性に関する研究
  • テイシツ ノ カガク ゲンソ ニ チャクモク シタ エンガンイキ ノ ヒョウサ ト カイヒン トクセイ ニ カンスル ケンキュウ

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Abstract

 Sand samples along the shorelines and in the rivers of Tottori Prefecture were assayed for chemical elements using energy dispersive X-ray spectrometer. Samples contained more than 60 wt% Si, Al, Ca, Fe, Na and Mg less than 10 wt%. It was found by EOF analysis that Si, Al, Ca and Fe were the significant chemical elements. The spatial variations of first mode of Si are related to sediment dynamic behavior. The transport regime is net accretion when the first mode value of Si is increasing, and net erosion when being decreasing.

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