Secchi Disc and Lago de la Repubfica, Eastern Paraguay  

作　　者：John A. Fitzpatrick Juan F. Facetti-Masulli 

机构地区：[1]Hyclroconsult, Charles de Gaulle 980 Asuncidn, Paraguay [2]National University of Asuncion, San Lorenzo, Paraguay

出　　处：《Journal of Earth Science and Engineering》2015年第8期482-486,共5页地球科学与工程（英文版）

摘　　要：The Secchi disc is used to obtain the water transparency D and a value for the attenuation coefficient Kt according to Kt = Cx.D1 where C is a factor estimated supposedly as a constant. Lago de la Republica, a small reservoir seated on basaltic residual soil laterites rich in secondary sesquioxides of Fe, AI, etc of the Alto Parana Formation, after rainfalls incorporates significant amount of sediments rich in iron compounds easily hydrolyzed to produce colloidal hydrated ferric oxides. After some heavy rainfalls, advantage was taken to look for the effect of such compounds onto transparency and light attenuation coefficient of the lake water and their relationship.

关 键 词：TRANSPARENCY light attenuation coefficient SEDIMENTS Lago de la Republica. 

分 类 号：U469.11[机械工程—车辆工程] X53[交通运输工程—载运工具运用工程]