Abstract:

Analysis of water and sediment samples collected during the R/V Endeavor cruise EN527 in the Gulf of Mexico, June 20 - July 2, 2013, at cold-seep and control sites. Measurements include the concentration of dissolved nutrients, dissolved organics, cations, anions and dissolved gases acquired from 27 CTD casts and 11 sediment cores.

Suggested Citation:

Joye, Samantha. 2016. R/V Endeavor: EN527 Water and Sediment Chemistry, Gulf of Mexico, June 20 - July 2, 2013. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7KW5D1Z

Publications:

Rogener, M. K., Bracco, A., Hunter, K. S., Saxton, M. A., & Joye, S. B. (2018). Long-term impact of the Deepwater Horizon oil well blowout on methane oxidation dynamics in the northern Gulf of Mexico. Elem Sci Anth, 6(1), 73. doi:10.1525/elementa.332

Purpose:

The purpose of this dataset it to asses the impacts of the Deepwater Horizon blowout on sediment and 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; Event; Collection type; 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); pH; Dissolved Oxygen (O2, mg/L); 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); Dissolved Organic Nitrogen (DON, uM); Dissolved Phosphate (PO4, uM); Total Dissolved Phosphorus (TDp, uM); Dissolved Organic Phosphorus (DON, 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); 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, %); Bacterial Production via tritiated leucine incorporation (Bacteria Production, ng C L-1 d-1)

Individual Files: