Abstract:

Hydrographic data were collected during cruise EN496 using a CTD-rosette system aboard the R/V Endeavor. Our objectives were to collect water column and benthic samples in the Northern Gulf of Mexico in the vicinity of the Mississippi Plume as well as at/near active seeps. This cruise was funded by the Biological Oceanography Program at NSF but we were also able to carry out a variety of ECOGIG sampling activities. The ship departed Gulfport MS on 07/02/2011 and returned to Gulfport on 07/27/2011. Samples were collected 2011-07-03 to 2011-07-26. Binned profiles and bottle files are available.

Suggested Citation:

Joseph Montoya. 2018. CTD Hydrographic data from Cruise R/V Endeavor (EN496), Louisiana, Mississippi, Alabama Shelf Break, July 2011. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7JM27NR

Publications:

Weber, S. C., Battles, J. J., Peterson, L., Roberts, B. J., Peterson, R. N., Hollander, D. J., … Montoya, J. P. (2015). Hercules 265 Rapid Response: Immediate ecosystem impacts of a natural gas blowout incident. Deep Sea Research Part II: Topical Studies in Oceanography. doi:10.1016/j.dsr2.2015.11.010

Fernández-Carrera, A., Rogers, K. L., Weber, S. C., Chanton, J. P., & Montoya, J. P. (2016). Deep Water Horizon oil and methane carbon entered the food web in the Gulf of Mexico. Limnology and Oceanography, 61(S1), S387–S400. doi:10.1002/lno.10440

Purpose:

This cruise was funded by the Biological Oceanography Program at NSF to study the interactions between the Mississippi Plume and offshore waters of the Gulf of Mexico. We were able to accommodate a variety of ECOGIG sampling activities focused on the impacts of oil and gas on offshore ecosystems.

Data Parameters and Units:

profiles – Events [496-00 1-01, 2-02, 2-04, 3-01, 3-02, 3-06, 3-09, 3-11, 3-12, 4-01, 4-03, 4-05, 4-07, 5-04, 5-06, 5-07, 5-09, 5-13, -15, 5-18, 5-21, 5-22, 6-01, 8-01, 8-05, 9-02, 9-03, 9-07, 9-09, 10-02, 10-04, 10-08, 10-09, 11-01, 12-01, 13-01, 14-011, 15-02, 15-06, 15-08, 15-09, 16-02, 16-04, 16-07, 16-09, 16-11, 17-01, 17-04, 17-07, 18-03, 18-06, 19-02] BottleFiles – Bottle (number); Date (Month DD YYYY); Time (hh:mm:ss); Sal00 Salinity (PSU); Sal11 Salinity 2 (PSU); Sigma-t Density sigma-theta (kg/m^3); Sigma-t Density 2 sigma-theta (kg/m^3); OxsatML/L; Sbeox0Mg/L Oxygen SBE 43 WS = 2 (ml/l); Sbeox1ML/L Oxygen 2 SBE 43 WS = 2 (ml/l); Potemp090C Potential Temperature (degrees Celsius); Potemp190C Potential Temperature (degrees Celsius); SvCM sound velocity in water (meters/second); SvCM1 sound velocity in water 2 (meters/second); Scan; Scan-SD scan standard deviation; TimeJ; TimeJ-SD standard deviation; TimeS Time Elapsed (seconds); TimeS-SD Time Elapsed standard deviation; PrDM Pressure, Digiquartz (db); PrDM Pressure, Digiquartz (db); PrDM-SD Pressure Digiquartz standard deviation; DepSM Depth salt water (meters); DepSM-SD Depth salt water standard deviation; T090C Temperature ITS-90 (degrees Celsius); T090C-SD Temperature ITS-90 standard deviation; T190C Temperature 2 ITS-90 (degrees Celsius); T190C-SD Temperature 2 ITS-90 standard deviation; T2-T190C Temperature 2 ITS-90 (degrees Celsius); T2-T190C-SD Temperature 2 ITS-90 standard deviation; C0S/m Conductivity (Siemens/meter); C0S/m-SD Conductivity standard deviation; C1S/m Conductivity 2 (Siemens/meter); C1S/m-SD Conductivity 2 standard deviation; C2S/m Conductivity 3 (Siemens/meter); C2S/m-SD Conductivity 3 standard deviation; V0 voltage; V0-SD standard deviation; Bat Beam Attenuation (1/meters); Bat-SD Beam Attenuation (1/meters); Xmiss Beam Transmission, Chelsea/Seatech/Wetlab CStar (%); Xmiss Beam Transmission, standard deviation Chelsea/Seatech/Wetlab CStar standard deviation; V2 voltage V2-SD voltage standard deviation; AltM Altimeter (meters); AltM-SD Altimeter standard deviation; V3 voltage; V3-SD voltage standard deviation; PAR (events 1 to 2) Photosynthetically Active Radiation (μEinsteins/meter^2•second); PAR (events 1 to 2) Photosynthetically Active Radiation standard deviation; V4 voltage; V4-SD voltage standard deviation; Sbeox0V Oxygen (volts); Sbeox0V-SD Oxygen standard deviation; V5 voltage; V5-SD voltage standard deviation; Sbeox1V Oxygen 2 (volts); Sbeox1V-SD Oxygen 2 standard deviation; V7 voltage; V7-SD standard deviation; FlECO-AFL Fluorescence, Wetlab ECO-AFL/FL (mg/m^3); FlECO-AFL-SD Fluorescence, Wetlab ECO-AFL/FL standard deviation; Spar SPAR/Surface Irradiance; Spar-SD SPAR/Surface Irradiance standard deviation; Latitude (decimal degrees); Latitude-SD standard deviation; Longitude (decimal degrees); Longitude-SD longitude standard deviation

Individual Files: