GRIIDC | R4.x268.000:0007

Dataset Available

Water column chemistry data collected on board the R/V Endeavor cruise EN586 in the northern Gulf of Mexico from 2016-07-24 to 2016-08-14

Authors: Samantha Joye

Published On: Apr 23 2019 21:26 UTC

DOI: https://doi.org/10.7266/N7VH5M5X

UDI: R4.x268.000:0007

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Project Information

Funded By:
Gulf of Mexico Research Initiative

Funding Cycle:
RFP-IV

Research Group:
Ecosystem Impacts of Oil and Gas Inputs to the Gulf-2 (ECOGIG-2)

Point of Contact

Samantha B. Joye
University of Georgia / Department of Marine Sciences
mjoye@uga.edu

Data Collection Period

2016-07-24

2016-08-14

Theme keywords

microbial process rate measurements, GB480, GC185, GC574, GC600, GC699, GC767, MC118, OC26, Orca Basin, Taylor Energy-1, water column chemistry, water column nutrients, nutrient ratios, dissolved inorganic carbon (DIC), cations, anions, dissolved gases, methane oxidation, bacterial production, water column methane, water column hydrogen sulfide

ISO 19115-2 Metadata

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Abstract:

This dataset reports chemical analysis of water samples collected during the R/V Endeavor cruise EN586 in the Gulf of Mexico from 2016-07-24 to 2016-08-14, at cold-seep and control sites. Measurements include the concentration of dissolved nutrients, dissolved organics and inorganics, cations, anions and dissolved gases acquired from CTD casts. This dataset also includes methane oxidation and bacterial production rates. The R/V Endeavor cruise EN586 objective was to assess the impacts of the Deepwater Horizon blowout on water chemistry on fallout sites and compare these impacts to naturally occurring oil and gas seeps. The cruise was led by chief scientist Dr. Joseph Montoya. Additional information about this cruise can be found in the R2R repository page: http://www.rvdata.us/catalog/EN586.

Suggested Citation:

Samantha Joye. 2019. Water column chemistry data collected on board the R/V Endeavor cruise EN586 in the northern Gulf of Mexico from 2016-07-24 to 2016-08-14. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7VH5M5X

Purpose:

The purpose of this dataset is to asses the impacts of the Deepwater Horizon blowout on water chemistry on fallout sites and compare these impacts to naturally occurring oil and gas seeps.

Data Parameters and Units:

Location (BOEM lease block), station number, event number, collection type (CTD), latitude and longitude (degrees decimal minutes), date (dd/mm/yy), local time, depth (m), ammonium (NH4, micromol), nitrite (NO2, micromol), nitrate + nitrite (NOx, micromol), nitrate (NO3, micromol), dissolved inorganic nitrogen (DIN, micromol), total dissolved nitrogen (TDN, micromol), dissolved organic nitrogen (DON, micromol), dissolved phosphate (PO4, micromol), total dissolved phosphorus (TDP, micromol), dissolved organic phosphorus (DOP, micromol), dissolved inorganic nitrogen to phosphorus ratio (DIN:DIP, molar ratio), dissolved organic nitrogen to phosphorus ratio (DON:DOP, molar ratio), dissolved organic carbon (DOC, micromol), dissolved inorganic carbon (DIC, mM), dissolved methane (CH4, nM), hydrogen sulfide (H2S, mM), sulfate (mM), chloride (mM), sodium (mM), potassium (mM), magnesium (mM), calcium (mM), methane oxidation (pmol L^-1 d^-1), bacterial production (ng C L^-1 d^-1), N.D. = no data (analysis not performed), B.D.L. = below detection limit, N.S. = no sample, NA = not applicable. DON is not measured directly, it is calculated as DON = TDN-NOx-NH4. The NH4 (in column Q “LAB for DON analysis”) used in the calculation above is from analysis of the frozen samples used for nutrient analyses in the lab and not the in situ value as measured on the ship.

Instruments: