Chemical and physical properties of the water column at Crater Lake, Oregon
Collier R, Dymond J, Mcmanus J, Lupton J. 1990. Chemical and physical properties of the water column at Crater Lake, Oregon. Pages 69-79. In Drake ET, Larson GL, Dymond J, Collier R (ed): Crater Lake: An ecosystem study. Corvallis, Oregon. June 18-22, 1988. San Francisco. 69th Annual Meeting of the Pacific Division/American Association for the Advancement of Science
"The vertical distribution of temperature and density in Crater Lake are primarily controlled by the balance of the strongly-seasonal heat exchange at the lake’s surface and a continual conductive and convective input of heat at the lake floor. The net result is a nearly-uniform density and relatively lox stability in the deep water. To a first approximation, the concentrations of the major cations and anions in the system are well mixed vertically. The concentrations of most transition metals are very low and the vertical distributions of several trace metals demonstrate the significance of surface (atmospheric) input. Consistent with the well-known clarity of the lake, the concentration of suspended particles, as indicated by a beam-light transmissometer, is generally very low, and during the summer the vertical distribution of particles is primarily controlled by the phytoplankton. The temperature of the lake water gradually increases below a depth of approximately 300 meters and shows stronger increases (delta T => 0.1 C) near the east end of the south basin. These temperature increases are accompanied by an increase in conductivity. The overall form and distribution of these anomalies suggest they are dynamic features that require active input of thermal waters at the SE corner of this basin. There s also an increase in the concentration of the major cations (Na, K, Ca, Mg, Li) which is directly proportional to the conductivity and temperature increase."
- Type
- Conference Proceeding Paper
- Authors
- Collier, R; Dymond, J; Mcmanus, J; Lupton, J
- Units
- CRLA
- Keywords
- Aquatic Sciences, Chemistry, Fresh Water, Geology, Hydrology, Hydrothermal Activity, Limnology, Water characteristics, Water Chemistry, Water Quality, Water Temperature, water turbidity