Hydrographic and water column data were collected during a cruise to the Hercules 256 site using a CTD-rosette system aboard the R/V Acadiana. We characterized the physical and chemical properties in the water column at/near the rig in the immediate aftermath of its blowout. The ship departed Cocodrie LA on 07/27/2013 for a day cruise, then returned to the rig on 07/29/2013 - 07/30/2013. Binned profiles and bottle files are available through this link, and raw CTD data are available on request.
Joseph Montoya. 2014. CTD and water chemistry, Hercules Spill Response Cruise EN527, Louisiana South Timbalier Block 220, July 27-30, 2013.. Distributed by: Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC), Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7SF2T6D
Characterization of physical and chemical properties in the water column at/near the Hercules 265 rig in the days following its blowout.
Data Parameters and Units:
Cruise [Acadiana] 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 Oxygen Saturation Weiss (umol/Kg) Sbeox0ML/L Oxygen SBE 43 WS=2 (ml/l) Sbeox1ML/L Oxygen SBE 43 WS=2 2 (ml/l) Scan (count) Scan-SD (count) where SD is standard deviation error 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) Mean O2 (mmol/kg) Mean O2-SD Mean PO4 Mean Si Mean NO3+NO2 Mean N* PARTICLES d15N d13C C:N CH4 (nM) Total N (µmol/L) Total C (µmol/L) RhoN (nmol/L/d) RhoC (nmol/L/d) RhoN-Total (nM/d) RhoC-Total (nM/d)