Physical characteristics of Acidic Mining Lake 111
Physical characteristics of Acidic Mining Lake 111
复制标题
酸性矿湖111物理特性
作者：
G. Karakas;Iris Brookland;B. Boehrer
在1996-2002年期间，在位于德国卢萨蒂亚的Mining Lake 111（ML 111）中进行了物理性质的测量。在ML 111的最深区域，观察到一个单层水层，持续了1996-1999年。它于2000年消失，并于2001年再次成立。在酸性矿湖中，主要物理特性的定义，如电导率的温度补偿，需要采取针对湖泊的方法。测定了酸性ML 111的电导率、温度和密度之间的关系。溶解物质的变化影响这些关系，电导率随温度变化，即使在不同层的水柱和湖泊广泛的相关性的局限性是显而易见的。表层水电导率的变化可以得到验证，并同意从湖面蒸发在夏季分层的估计。梯度通量法计算表明，整个低水层的垂直输运系数在10-7 ~ 10- 6 m ~ 2/s之间。热量收支表明，春季热量向湖床或地面转移。
Measurements of physical properties have been conducted in Mining Lake 111 (ML111), located in Lusatia, Germany over the time period 1996–2002. In the deepest area of the ML111, a monimolimnion was observed, that persisted for the years 1996–1999. It disappeared in 2000 and again formed in 2001. The definition of the main physical properties, such as the temperature compensation for electrical conductivity, in acidic mining lakes required a lake specific approach. The relation between conductivity, temperature and density was determined for the acidic ML111. The variation in dissolved substances affected these relationships such that conductivity varied with temperature even in different layers of the water column and the limitations for a lake wide correlation was evident. Variation in the conductivity of the epilimnion could be verified, and agreed with the estimates of evaporation from the lake surface during summer stratification. Calculations, following the gradient flux method, indicated vertical transport coefficients between 10–7 and 10–6m2/s throughout the hypolimnion. The heat budget indicated that heat was transferred into the lake bed or the ground during spring.