boundary layer turbulence and abyssal recipes: moorings, microstructure and dye survey datasets

These data were collected as part of the Boundary Layer Turbulence and Abyssal Recipes (BLT Recipes) Experiment which focused on near-bottom processes within a continental slope canyon on the eastern side of the Rockall Trough, off Ireland. Included are data collected from shipboard multibeam, moorings and profilers throughout 3 cruises in 2021 and 2022. 
During the first cruise in June and July 2021, a fluorescein dye release was measured using the Fast CTD, a tethered profiler with a Seabird SBE49 CTD, a custom micro-conductivity probe, a Turner C-FLUOR fluorometer and an altimeter. We also conducted 5 microstructure turbulence stations using the epsi-fish profiler which measured temperature, pressure and salinity from a Seabird 49 CTD, height above bottom from a custom altimeter and kinetic energy and thermal dissipation rates measured from airfoil and thermistor probes, respectively. Four moorings were deployed during the first cruise. A McLane Moored Profiler was deployed for one week during the dye release and was outfitted with a Seabird SBE52 CTD, a Falmouth Scientific Inc. acoustic current meter, a Turner C-FLUOR fluorometer and two thermistor probes. The McLane Moored Profiler was re-deployed, without the fluorometer and thermistor probes, together with two other moorings which consisted of ~80 Seabird SBE56/RBR Solo thermistors and 8 Modular Acoustic Velocimeters (MAVS). All moorings had a RDI Longranger 75 kHz Acoustic Doppler Current Profiler (ADCP) mounted in the top float. These moorings were recovered on the second cruise in October 2021. During the third cruise in August 2022, another 6 microstructure stations were conducted with the epsi-fish profiler.
 

These data were collected as part of the Boundary Layer Turbulence and Abyssal Recipes (BLT Recipes) Experiment which focused on near-bottom processes within a continental slope canyon on the eastern side of the Rockall Trough, off Ireland. Included are data collected from shipboard multibeam, moorings and profilers throughout 3 cruises in 2021 and 2022. 
During the first cruise in June and July 2021, a fluorescein dye release was measured using the Fast CTD, a tethered profiler with a Seabird SBE49 CTD, a custom micro-conductivity probe, a Turner C-FLUOR fluorometer and an altimeter. We also conducted 5 microstructure turbulence stations using the epsi-fish profiler which measured temperature, pressure and salinity from a Seabird 49 CTD, height above bottom from a custom altimeter and kinetic energy and thermal dissipation rates measured from airfoil and thermistor probes, respectively. Four moorings were deployed during the first cruise. A McLane Moored Profiler was deployed for one week during the dye release and was outfitted with a Seabird SBE52 CTD, a Falmouth Scientific Inc. acoustic current meter, a Turner C-FLUOR fluorometer and two thermistor probes. The McLane Moored Profiler was re-deployed, without the fluorometer and thermistor probes, together with two other moorings which consisted of ~80 Seabird SBE56/RBR Solo thermistors and 8 Modular Acoustic Velocimeters (MAVS). All moorings had a RDI Longranger 75 kHz Acoustic Doppler Current Profiler (ADCP) mounted in the top float. These moorings were recovered on the second cruise in October 2021. During the third cruise in August 2022, another 6 microstructure stations were conducted with the epsi-fish profiler.
 

Disciplines

Physical oceanography

Keywords

turbulence, microstructure, Rockall Trough, canyon, bottom boundary layer, internal waves

Location

54.410909N, 54.116548S, -11.725762E, -12.152856W

Data

FileSizeFormatProcessingAccess
Zip file containing mooring and FCTD data (.nc and .mat)
235 MoNetCDFProcessed data
Zip file containing microstructure data (.nc and .mat)
169 MoNetCDFProcessed data
How to cite
Wynne-Cattanach Bethan, Couto Nicole, Drake Henri, Ferrari Raffaele, Le Boyer Arnaud, Mercier Herle, Messias Marie-Jose, Ruan Xiaozhou, Spingys Carl, Van Haren Hans, Voet Gunnar, Polzin Kurt, Naveira Garabato Alberto, Alford Matthew (2024). boundary layer turbulence and abyssal recipes: moorings, microstructure and dye survey datasets. SEANOE. https://doi.org/10.17882/98178

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