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Cruise Info
| Cruise ID | MV1216 |
| Vessel | R/V MELVILLE |
| Abstract | Quantifying mixing around topography: Ridges and canyons: There are two components to this field work: 1) To make detailed, high resolution observations very close to Mendocino Ridge (at 127.5 W, 40.37 N) during Spring tides when the barotropic currents will be strongest. We use of the shipboard ADCP and CTD as well a Lowered-ADCP (courtesy of Scripps Institution of Oceanography) and a chi-pod (courtesy of Oregon State University). In order to understand both averaged and instantaneous processes, we will split our observations into two parts, each one 96 hours long. In the first part we will perform a series of very slow, cross-ridge transits whilst yo-yoing the CTD package between 800m and 2000m. In the latter 96 hours, we will do eight 12 hour stations at four different locations on the southern flank of the ridge at different phases of the spring-neap cycle (the southern barotropic currents are around 1-2cm stronger than the northern currents). 2) To conduct 30 hour profiling at eight stations, during a Spring tide, in the vicinity of Vizcaino canyon (124.85W, 39.69 N). These profiles will consist of lowered ADCP and CTD profiles to obtain vertical profiles of density and velocity. The CTD will be fitted with a chi-pod for the measurement of vertical profiles of turbulent fluctuations of temperature. |
| Description | Quantifying mixing around topography: Ridges and canyons |
| Starting Port | San Diego, California, USA |
| Ending Port | San Diego, California, USA |
| Starting Date | 2012-11-10 |
| Ending Date | 2012-12-03 |
| Principal Investigator | Waterhouse, Amy F. |