the shift in the nutrient structure resulted from more stratified ocean in the early Maastrichtian (76 Ma to 73 Ma) to mixed ocean in the late Maastrichtian (73 Ma to 69 Ma).
This decreasing trend may be associated with the shift in the nutrient structure resulted from more stratified ocean in the early Maastrichtian to mixed ocean in the late Maastrichtian i.e.
In the stably stratified ocean
interior, both shear-driven mixing (Pacanowski and Philander 1981; Large et al.
Podney  proved that the electromagnetic field generated by a progressive ocean wave in a stratified ocean
could be regarded as a sum of a transverse electric type field, a transverse magnetic type field, and an electrostatic type field, which indicates that the vertical component of seawater velocity is important.
The uniform asymptotic forms of the internal gravity waves in horizontally inhomogeneous and non- stationary stratified ocean are obtained.
Keywords: Stratified ocean, internal gravity waves, asymptotic methods.
Sampling turbulence in the stratified ocean
: statistical consequences of strong intermittency.
The model approximates the continuously stratified ocean
as three constant-density layers.
VERTICAL MIXING IN THE STRATIFIED OCEAN BELOW THE SURFACE MIXED LAYER.
Dynamic instabilities driven by shear in the oceanic internal wave field account for most mixing and turbulent vertical fluxes in the stratified ocean away from stress boundaries (Munk and Wunsch 1998).
This same tendency is present, though at a much larger scale, in the interior of a stratified ocean
when the depth-averaged current flows over abrupt topography.