Current Seasonal Limnology of the Berkeley Pit-Lake

摘要

The Berkeley pit-lake was sampled during two seasons, fall 1997 and spring 1998, from the surface to the bottom. Various parameters were measured to determine what effect the seasons had on the water column. It was determined that a seasonal turnover did occur between the fall and the spring sampling; however, the depth of mixing due to turnover could not be estabilshed. Trends were observed which suggested that microbial activity was altering the iron speciation at depth, and subsequently maksing the extent of mixing, Various trace metals were removed from the surface water by either co-precipitation with schwertmannite or adsorption.