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)

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).

Tags: altimeter sensor, biospherical/licor par sensor, carbon to nitrogen ratio, chelsea seatech wetlab c-star sensor, ctd seabird seacat-19, ctd-rosette, delta-13c, delta-15n, depth, depth range in sediment, dissolved inorganic nitrogen, dissolved inorganic nitrogen to phosphorus ratio, dissolved methane, dissolved organic carbon, dissolved organic nitrogen, dissolved organic nitrogen to phosphorus ratio, dissolved organic phosphorus, dissolved phosphate, ecosystem impacts of oil and gas inputs to the gulf (ecogig), en515, hydrogen sulfide, marine snow, marine snow profiling camera, methane oxidation, multiple corer, nikon coolpix 995, nitrate, nitrate + nitrite content (concentration), nitrite, northern gulf of mexico, nutrients, oceanography, particulate inorganic carbon, particulate organic carbon, ph, sea-bird sbe-911plus, sea_water_electrical_conductivity, sea_water_potential_temperature, sea_water_pressure, sea_water_salinity, seabird sbe43 dissolved oxygen sensor, solid organic matter, spar sensor, sulfate reduction, total dissolved nitrogen, total dissolved phosphorus, total elemental carbon, total elemental nitrogen, total particulate carbon, total particulate nitrogen, water column beam attenuation, water column beam transmission, water column conductivity, water column density, water column depth, water column fluorescence, water column oxygen, water column potential temperature, water column pressure, water column salinity, water column temperature, wet labs eco fluorometers
Organization: National Oceanic and Atmospheric Administration, Department of Commerce