Abstract:

Hydrographic and water column data were collected during cruises EN509 and EN510 (sequential legs) using a CTD-rosette system aboard the R/V Endeavor. We characterized the physical and chemical properties in the water column at the ECOGIG seep and other study sites. The ship departed Gulfport MS on for cruise EN509 on 05/25/2012 and collected samples at ECOGIG and other sites before returning to Gulfport on 06/20/2012. Cruise EN510 departed Pascagoula MS (relocated to avoid a hurricane) on 06/25/2012 and collected samples at ECOGIG seep and control sites before returning to Gulfport MS on 07/05/2012. Binned profiles and bottle files are available.

Suggested Citation:

Joseph Montoya. 2016. CTD data at deep water seeps collected aboard R/V Endeavor cruises EN509 and EN510 in the northern Gulf of Mexico from 2012-05-26 to 2012-07-04. Distributed by: Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC), Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N74747W4

Purpose:

Characterization of physical and chemical properties in the water column at/near cold seeps in the northern Gulf of Mexico.

Data Parameters and Units:

Cruise [EN509, EN510] Site [MC118, MARS/URSA, GC600, W Chl Feature, SW Corner, NW corner, Blue Water, Shelft Stn, Eddy, Plume Stn, Offshore Eddy, AT357, OC26,Taylor Energy, CTRL-1] Station (numeric) Day (DD) Month (MM) Year (YYYY) Bottle (count) Latitude (decimal degrees) Longitude (decimal degrees) Date (Month DD YYYY) Time (hh:mm:ss) Sal00 salinity practical (psu) Sal11 salinity practical 2 (psu) Sigma-t00 Density sigma-theta (Kg/m^3) Sigma-t11 Density sigma-theta 2 (Kg/m^3) OxsatML/L Sbeox0ML/L Oxygen SBE 43 WS=2 (ml/l) Sbeox1ML/L Oxygen SBE 43 WS=2 2 (ml/l) Potemp090C Potential Temperature ITS-90 (degrees Celsius) Potemp190C Potential Temperature ITS-90, 2 (degrees Celsius) SvCM Sound Velocity Chen-Millero (m/s) SvCM1 Sound Velocity Chen-Millero 2 (m/s) Scan (count) Scan-SD (count) where SD is standard deviation error TimeJ 'Julian' Day-of-Year TimeJ-SD TimeS Elapsed Time (seconds) TimeS-SD PrDM Pressure Digiquartz (db) PrDM-SD DepSM Depth salt water (m) DepSM-SD T090C Temperature ITS-90 (degrees Celsius) T090C-SD T190C Temperature Difference ITS-90 (degrees Celsius) T190C-SD T2-T190C Temperature Difference ITS-90 2 (degrees Celsius) T2-T190C-SD C0S/m Conductivity (S/m) C0S/m-SD C1S/m Conductivity 2 (S/m) C1S/m-SD C2-C1S/m Conductivity Difference (S/m) C2-C1S/m-SD V0 Voltage 0 V0-SD Bat Beam Attenuation, Chelsea/Seatech/WET Labs CStar (1/m) Bat-SD Xmiss Beam Transmission, Chelsea/Seatech/WET Labs CStar (%) Xmiss-SD V2 Voltage 2 V2-SD AltM Altimeter (m) AltM-SD V3 Voltage 3 V3-SD pumps Pump Status dz/dt Descent Rate WS=2 (m/s) gpa Geopotential Anomaly (J/Kg) nbin number of scans per bin flag Par PAR/Irradiance, Biospherical/Licor Par-SD V4 Voltage 4 V4-SD Sbeox0V Oxygen raw SBE 43 (V) Sbeox0V-SD V5 V5-SD Sbeox1V Oxygen raw SBE 43 2 (V) Sbeox1V-SD V1 Voltage 1 V1-SD FlECO-AFL Fluorescence WET Labs ECO-AFL/FL (mg/m^3) FlECO-AFL-SD Spar SPAR/Surface Irradiance Spar-SD NUTS.

Publications:

D’souza, N. A., Subramaniam, A., Juhl, A. R., Hafez, M., Chekalyuk, A., Phan, S., … Montoya, J. P. (2016). Elevated surface chlorophyll associated with natural oil seeps in the Gulf of Mexico. Nature Geosci. doi:10.1038/ngeo2631

Individual Files: