Durand, Loyal, Jr. (ed.) / Transactions of the Wisconsin Academy of Sciences, Arts and Letters
volume XXXI (1938)
Whitney, Lester V.
Microstratification of inland lakes, pp. 155-173 ff. PDF (5.7 MB)
Whitney—Microstratification of Lakes 167 LARE MENDOTA - STATION 2 OGT.3 936. TRAN5~RENGY SCATTCR$NG IQ 15 - 2O~ f~ 25 FIG. 7. Transparency and scattering curves for Lake Mendota. this depth, but it rises only to a maximum and then falls again. In the lower water the scattering is less on the average than that above. In some other sets of readings, there have been instances in which large changes in transparency are accompanied by no detectable changes in scattering. A large increase in the amount of highly colored dissolved material - in a lake would reduce the transparency but might also reduce scattering. Hence transparency and scattering curves might be antisymmetrical or similar depending on the amounts and kinds of materials immersed in the water at different depths. A comparison of such curves yields more information than either type taken alone. Organic content. In the latter part of September, water samples were taken in an effort to discover correlations between transparency maxima and minima and organic content. One liter samples of water were centrifuged and loss in weight measured when converting the centrifuged material to ash. Results so far obtained are inconclusive although some evidence points
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