Abstract:

Conductivity, temperature, and depth data from the ship's CTD, which was deployed at each of the DEEPEND stations on R/V Point Sur cruise PS17-21. Depth of cast was variable, but extended from near-surface waters to below the euphotic zone. This data also includes measurements from a red light transmissometer, a chlorophyll fluorometer, and a dissolved oxygen sensor. The data is used in the assessment of the water column's vertical structure, and for comparison with physical models. Data were collected in the northern Gulf of Mexico from 2017-05-02 - 2017-05-12.

Suggested Citation:

English, D., Hu, C., Cook, A., Sutton, T.. 2018. Conductivity, temperature, and depth (CTD) data for DEEPEND stations, cruise DP05, R/V Point Sur cruise PS17-21, collected 2017-05-02 - 2017-05-12. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7GM85P1

Publications:

Easson, C. G., Boswell, K. M., Tucker, N., Warren, J. D., & Lopez, J. V. (2020). Combined eDNA and Acoustic Analysis Reflects Diel Vertical Migration of Mixed Consortia in the Gulf of Mexico. Frontiers in Marine Science, 7. doi:10.3389/fmars.2020.00552

Purpose:

To assess the water column's vertical structure during DEEPEND cruise DP05.

Data Parameters and Units:

cnv: Pressure (dbar), Temperature (deg C), Temperature 2 (deg C), Conductivity (S/m), Conductivity 2 (S/m), Beam attenuation (1/m), Chlorophyll fluorescence (mg/m^3), CDOM fluorescence (mg/m^3), Dissolved oxygen (mL/L), Oxygen saturation (%), Par (umol photons/m^2 s), Spar (umol photons/m^2 s), Descent rate (m/s), Altimeter (m), Salinity (PSU), Salinity 2 (PSU), Oxygen saturation 2 (mL/L), Depth (m), Sound velocity (m/s), Sigma t (kg/m^3), Sigma t 2 (kg/m^3) binned: Depth (m), Temperature (deg C), Temperature 2 (deg C), Salinity (PSU), Salinity 2 (PSU), Sigma t (kg/m^3), Chlorophyll fluorescence (mg/m^3), CDOM fluorescence (mg/m^3), Dissolved oxygen (mL/L), Oxygen saturation (%), Absolute salinity (g/kg), Absolute salinity 2 (g/kg), Conservative temperature 1 (deg C), Conservative temperature 2 (deg C), PAR (umol photons/m^2 s), sPAR (umol photons/m^2 s)

Methods:

The DP05 CTD dataset includes the raw CTD files from the ship's Seabird 911plus CTD, which can be reprocessed using the Seabird SBE-DataProcessing software. It also includes individual cast files that have been binned into 1m increments, with the raw data converted in scientific units.

Instruments:

Seabird SBE 911+ CTD, WET Labs ECO CDOM fluorometer, WET Labs ECO-AFL/FL fluorometer, Biospherical/Licor PAR/Irradiance, WET Labs C-Star transmissometer

Individual Files: