Density Currents in Weakly Stratified Environmental Flows with Weak Shear

[摘要] The effects of both weak stratification and shear of environmental flows on density currents are analytically investigated in a 2-dimensional model. Consistent with published results, both the propagation speed and depth of density currents increase as the shear in the direction of propagation increases. The lower-level shear is shown to be more effective than the upper-level one. The stable stratification increases the propagation speed but decreases the depth of density currents.

[学科分类] 大气科学