Secchi Disc and Lago de la Repubfica, Eastern Paraguay

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

作者机构：Hyclroconsult Charles de Gaulle 980 Asuncidn Paraguay National University of Asuncion San Lorenzo Paraguay 

出 版 物：《Journal of Earth Science and Engineering》 (地球科学与工程（英文版）)

年 卷 期：2015年第5卷第8期

页      面：482-486页

学科分类：12[管理学] 1204[管理学-公共管理] 082803[工学-农业生物环境与能源工程] 082304[工学-载运工具运用工程] 08[工学] 0828[工学-农业工程] 080204[工学-车辆工程] 0802[工学-机械工程] 120405[管理学-土地资源管理] 0823[工学-交通运输工程] 

主　　题：Transparency light attenuation coefficient sediments Lago de la Republica. 

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.