Record Details
Turbulence and high-frequency variability in a deep gravity current outflow
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Turbulence and high-frequency variability in a deep gravity current outflow |
| Names |
Nash, Jonathan D.
(creator) Peters, Hartmut (creator) Kelly, Samuel M. (creator) Pelegri, Josep L. (creator) Emelianov, Mikhail (creator) Gasser, Marc (creator) |
| Date Issued | 2012-09-28 (iso8601) |
| Note | This is the publisher’s final pdf. The published article is copyrighted by the American Geophysical Union and can be found at: http://www.agu.org/journals/gl/. |
| Abstract | Intensive sampling of the deep Mediterranean outflow 70 km W of the Strait of Gibraltar reveals a strong, tidally modulated gravity current embedded with large-amplitude oscillations and energetic turbulence. The flow appears to be hydraulically controlled at a small topographic constriction, with turbulence and internal waves varying together and increasing dramatically downstream of the choke point. These data suggest that a significant fraction of energy dissipation, mixing, and entrainment stress in gravity currents may occur in localized regions controlled by time-varying flow interactions with fine-scale topography. These findings highlight the important role of processes that are not resolved by global climate models (GCMs), which do not contain tides or mixing due to fine-scale topographic interactions. |
| Genre | Article |
| Identifier | Nash, J. D., H. Peters, S. M. Kelly, J. L. PelegrÃ, M. Emelianov, and M. Gasser (2012), Turbulence and high-frequency variability in a deep gravity current outflow, Geophysical Research Letters, 39, L18611, doi:10.1029/2012GL052899. |
