| Jason Hyatt, WHOI-MIT | |
| Robert C. Beardsley | |
| John M. Klinck | |
| Eileen E. Hofmann |
Vertical Structure – Vertical Fluxes
| Scale Separation from horizontal processes. | |
| Flux estimates have been made based on budgets. | |
| Analysis of the vertical structure may help us understand and better quantify the mechanisms of vertical heat and material fluxes. | |
| Heat melts ice. Krill like heat! |
The winter cruise platform was more stable than fall due to ice cover
An example of a layered vertical structure in main pycnocline
| Stable Salt Stratification, unstable thermal. | |
| Heat diffuses 100x faster than salt | |
| Density is dominated by salt gradient |
Possible mechanisms for pycnocline layers
| Diffusive regime of DDC. Observed in the Weddell Sea (Muench et al, 1990). Easily disrupted by… | |
| Internal wave breaking turbulence. Probably a factor in areas with topography or boundaries. | |
| Iceberg induced turbulence? | |
Strong layering within pycnocline present at a few stations
Often Interesting Structure around Tmax
Summary of Vertical Structure for Winter 2001
| Surface Mixed Layer deepens at the shelf break and in Marguerite Bay, and shallows over the center of the study area. | |
| A few stations show strong layering. | |
| Steps in main pycnocline of “Type A” present near boundaries and topography. | |
| Sometimes structure near Tmax. Shear? |
| Look further into possible mechanisms, and estimate fluxes associated – reasonable values? | |
| Raw scan data. | |
| Fall data. | |
| Biomapper data. | |
| Internal wave energy spectra from moorings. | |
| Interleaving, anyone? | |
| Do Krill like turbulence? |