The Relation between the Under-water Illumination and the Transparency of the Water of Lakes
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概要
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1. Measurements of the under-water illumination were made in eight lakes by employing Mazda selenium rectifier photo-electric cell and an unipivot pointer galvanometer.<BR>2. Within the limit from 5 to 12 m. in transparency, the illumi-nation at the depth at which the SFCCHI'S disc was just visible was 12.5-18.5% of that at the depth of 1 cm. below the surface, the mean of which was 14.5%.<BR>3. The following relation was observed between the transparency (t) and the absorption coefficient (k) of water per meter: t=1.9/k
- 日本陸水学会の論文
日本陸水学会 | 論文
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