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OAS accession Detail for 0208348
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Title: CTD, water and sediment chemistry, particle sample elemental (C, N) and isotopic (13C, 15N) data, and time series photographs obtained from a marine snow profiling camera during R/V Endeavor cruise EN515 in the Gulf of Mexico from 2012-09-06 to 2012-09-16 (NCEI Accession 0208348)
Abstract: This dataset contains CTD, water and sediment chemistry, particle sample elemental (C,N) and isotopic (13C, 15N) data, and time series photographs obtained from a marine snow profiling camera during R/V Endeavor cruise EN515 in the Gulf of Mexico from 2012-09-06 to 2012-09-16. The CTD data were collected using a CTD-rosette system. The physical and chemical properties in the water column at the Ecosystem Impacts of Oil and Gas Inputs to the Gulf (ECOGIG) seep and other study sites were characterized. The ship departed Gulfport Mississippi on cruise EN515 on 2012-09-05 to collect samples at ECOGIG and other sites before returning to Gulfport on 2012-09-16. The dataset includes binned profiles and bottle files along with the header files. The water column and sediment chemistry data includes water column salinity, pH, concentration of dissolved nutrients, dissolved gases, total particulate nitrogen (TPN), total particulate carbon (TPC), particulate organic carbon (POC), and particulate inorganic carbon data acquired from 19 CTD casts and 5 multiple corer drops. The elemental and isotopic data includes the delta 13C and 15N, total Nitrogen and Carbon, and the C/N ratio. The particle samples were collected using a CTD-rosette and a MOCNESS. Time series photographs were obtained from a marine snow profiling camera on short-term moorings. Vertical profiles of size-specific particle abundance were taken from Snowcam/Fluxcam moorings near lease blocks GC600 (profiles 1-2) and OC26 (profiles 3-5) in the Green Canyon and Mississippi Canyon, respectively. The camera, a Nikon Coolpix 995, was lowered at a steady rate of 10m/min to just above the seafloor. Images were captured every 11 seconds. The objectives were to characterize the physical and chemical properties in the water column at/near cold seeps in the northern Gulf of Mexico. All the data records also include sampling information (time, date, location, collection type, and depth).
Date received: 20191212
Start date: 20120906
End date: 20120916
Seanames: Coastal Waters of Gulf of Mexico, Gulf of Mexico, North Atlantic Ocean
West boundary: -90.58115
East boundary: -88.3672
North boundary: 29.7943
South boundary: 27.3456
Observation types: imagery, in situ, laboratory analyses, profile, sediment analysis, water chemistry
Instrument types: camera, CTD, fluorometer, Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS), PAR Sensor, sediment sampler - corer
Datatypes: CARBON, CONDUCTIVITY, FLUORESCENCE, HYDROSTATIC PRESSURE, irradiance, NITRATE, NITRITE, NITROGEN, NUTRIENTS, pH, PHOTOSYNTHETIC ACTIVE RADIATION (PAR), Potential temperature (theta), SALINITY, WATER DENSITY, water depth, WATER TEMPERATURE
Submitter: Sigdel, Bipana
Submitting institution: GRIIDC
Collecting institutions: Georgia Institute of Technology, University of Georgia, University of Southern Mississippi, Department of Marine Science
Contributing projects: DWH, GoMRI, GRIIDC
Platforms: Endeavor (337W)
Number of observations:
Supplementary information: Data Parameters and Units:

CTD Data: Cruise [EN515], Site [OC26, GC600, Shelf 1, Shelf 2, Taylor Energy, Shelf 3, Shelf 4, CTRL-1, MC118], 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 [psu]), Sal11 (Salinity 2 [psu]), Sigma-t00 (Density, sigma-theta [Kg/m^3]), Sigma-t11 (Density, sigma-theta 2 [Kg/m^3]), OxsatML/L [ml/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 (SD is standard deviation error [count]), TimeJ ['Julian' Day-of-Year], TimeJ-SD, TimeS (Elapsed Time [seconds]), TimeS-SD [seconds], PrDM (Pressure Digiquartz [dbar], PrDM-SD [dbar], DepSM (Depth salt water [m]), DepSM-SD [m], T090C (Temperature ITS-90 [degrees Celsius]), T090C-SD [degrees Celsius], T190C (Temperature Difference ITS-90 [degrees Celsius], T190C-SD [degrees Celsius], T2-T190C (Temperature Difference ITS-90 2 [degrees Celsius]), T2-T190C-SD [degrees Celsius],C0S/m (Conductivity [S/m]), C0S/m-SD [S/m], C1S/m (Conductivity 2 [S/m]), C1S/m-SD [S/m], C2-C1S/m (Conductivity Difference [S/m]), C2-C1S/m-SD [S/m], V0 Voltage 0, V0-SD, Bat Beam Attenuation (Chelsea/Seatech/WET Labs CStar [1/m]), Bat-SD [1/m], Xmiss (Beam Transmission, Chelsea/Seatech/WET Labs CStar [%], Xmiss-SD [%], V2 Voltage 2, V2-SD, AltM (Altimeter [m]), AltM-SD [m], V3 Voltage 3, V3-SD, Par (PAR/Irradiance, Biospherical/Licor), Par-SD, V4 Voltage 4, V4-SD, Sbeox0V (Oxygen raw SBE 43 [V]), Sbeox0V-SD [V], V5, V5-SD, Sbeox1V (Oxygen raw SBE 43 2 [V]), Sbeox1V-SD [V], V1 (Voltage 1), V1-SD, FlECO-AFL (Fluorescence WET Labs ECO-AFL/FL [mg/m^3]), FlECO-AFL-SD [mg/m^3], Spar (SPAR/Surface Irradiance), Spar-SD. NUTS - Mean PO4 [µmol/L], Mean Si [µmol/L], Mean NO3+NO2 [µmol/L], Mean N*. PARTICLES - d15N [per mille], d13C [per mille], C:N, Total N [µmol/L], Total C [µmol/L]. Integrated nuts - Z [m], ∆Z [m], P [umol/L], P (depth-integrated, [umol/m^2]), Si [umol/L], Si (depth-integrated, [umol/m^2]), N [umol/L], N (depth-integrated, [umol/m^2]), N*, N* integrate.

Water and sediment chemistry data: For water column data - Location [BOEM lease block]; Station; Event; Collection type [CTD]; Lat [Latitude, degrees decimal minutes]; Long [Longitude, degrees decimal minutes]; Date [dd/mm/yy]; Time [Local, L]; Time [Zulu, Z]; Depth [meters below surface, m]; Laboratory sample ID; pH; Salinity [psu]; Ammonium [NH4, uM]; Nitrite [NO2, uM]; Nitrate + nitrite [NOx, uM]; Nitrate [NO3, uM]; Dissolved Inorganic Nitrogen [DIN, uM]; Total Dissolved Nitrogen [TDN, uM]; Ammonium for dissolved organic nitrogen calculation only [NH4,uM]; Dissolved Organic Nitrogen [DON, uM]; Dissolved Phosphate [PO4, uM]; Total Dissolved Phosphorus [TDp, uM]; Dissolved Organic Phosphorus [DOP, uM]; Dissolved Inorganic Nitrogen to Phosphorus ratio [DIN:DIP, molar ratio]; Dissolved Organic Nitrogen to Phosphorus ratio [DON:DOP, molar ratio]; Dissolved Organic Carbon [DOC, uM]; Dissolved Methane [CH4, nM].

For sediment data - Collection type [Multiple corer]; Depth range in sediment [cm]; Hydrogen Sulfide [H2S, mM); Sulfate [mM] ; Chloride [mM]; Sodium [mM]; Potassium [mM]; Magnesium [mM]; Calcium [mM]; Methane Oxidation [pmol cc-1 d-1]; Sulfate Reduction [nmol cc-1 d-1]; Solid Organic Matter [Lost on ignition, %]; Total particulate Nitrogen [TPN, %]; Total Particulate Carbon [TPN, %]; Particulate Organic Carbon [POC, %]; Particulate Inorganic Carbon [PIC, %]. Please note that ND = No data [analysis not performed], BDL = Below detection limit, and blank means sample blank and there is no data exist.

Particle sample elemental and isotopic data: Cruise ID [EN515]; Site; Station [or event number]; Bottle number; Date [Month Day Year]; Time [local, HH:MM:SS]; Latitude [decimal degrees]; Longitude [decimal degrees]; Depth [meters]; d15N [delta-15N: per mil deviation from atmospheric N2, %]; d13C [delta-13C: per mil deviation from VPDB, %], C:N [carbon to nitrogen ratio]; Total Nitrogen [µmol/L]; Total Carbon [µmol/L]. Please note that the blank cells mean there is no data exit.

Time series photographs data: The data parameter and units for these data are just the settings for the camera for each shot. Whitebal is the white balance (set for flash), SENSITIVITY a setting analagous to film speed (set to ISO200), shutter speed, aperture sure, the lens focal length, the metering mode, exp +/-, img adjust, sensitivity, sharpness, date, quality, saturation, focus area.
Availability date:
Metadata version: 18
Keydate: 2020-01-09 18:12:46+00
Editdate: 2025-01-20 16:03:43+00