Effects of seasonal fluctuations of surface heat flux and wind stress on mixing and vertical diffusivity of water column in deep lakes

摘要

Accurate vertical diffusivity estimates at different stratification conditions are essential to correctly model vertical mixing of discharges into lakes. This study presents calculated variations in vertical mixing at different depths in Boulder Basin, Lake Mead, a deep reservoir over a four-year period using hourly weather data and 6-hourly measured temperature, conductivity, and DO profiles. Turbulent Kinetic Energy (TKE) and mixing intensities within Boulder Basin, calculated based on surface heat flux and wind speed were compared to water column stability and diffusivity over the study period.