A colorimetric and geochemical study of the coloration factor of hyper-acid active crater lakes
スポンサーリンク
概要
- 論文の詳細を見る
Coloration factor and coloration mechanism of the Yudamari crater lake on Mt. Aso and the Yugama crater lake on Mt. Shirane, which are typical hyper-acid crater lakes in Japan and that were observed to be cloudy emerald green in color, are discussed using data from color measurements, chemical analyses of lake waters and the grainsize distribution of suspended elemental sulfur. The grain-size distribution of elemental sulfur in the crater lakes, which is formed by the reaction of SO<SUB>2(ap)</SUB> and H<SUB>2</SUB>S<SUB>(ap)</SUB> originating from the bottom fumaroles, was seen to agree with that of a synthetic colloidal sulfur solution when it turned bluish white. The existence of colloidal sulfur particles involved in Rayleigh scattering and Mie scattering was confirmed. Color measurements using a colorimeter showed that the coloration of the crater lakes is not only caused by the scattering of sunlight by colloidal sulfur particles, but also by the absorption of sunlight by dissolved ferrous ion.
- 日本陸水学会の論文
日本陸水学会 | 論文
- キイロカワカゲロウの孵化におよぼす水温の影響〔英文〕
- キイロカワカゲロウ羽化の経日・日周変化〔英文〕
- Studies on Taxonomy and Distribution of the Freshwater Snails,Genus,Semisulcospia in the Three Islands inside Lake Biwa
- びわ湖南湖におけるタテヒダカワニナおよびカゴメカワニナの分布とその決定要因について
- ちりとり型金綱による河川底生動物採集上の問題点