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Full-Text Articles in Life Sciences
Large-Scale Deposition Of Weathered Oil In The Gulf Of Mexico Following A Deep-Water Oil Spill, Isabel Romero, Gerardo Toro-Farmer, Arne R. Diercks, Patrick Schwing, Frank E. Muller-Karger, Steven Murawski, David Hollander
Large-Scale Deposition Of Weathered Oil In The Gulf Of Mexico Following A Deep-Water Oil Spill, Isabel Romero, Gerardo Toro-Farmer, Arne R. Diercks, Patrick Schwing, Frank E. Muller-Karger, Steven Murawski, David Hollander
Marine Science Faculty Publications
The blowout of the Deepwater Horizon (DWH) drilling rig in 2010 released an unprecedented amount of oil at depth (1,500 m) into the Gulf of Mexico (GoM). Sedimentary geochemical data from an extensive area (∼194,000 km2) was used to characterize the amount, chemical signature, distribution, and extent of the DWH oil deposited on the seafloor in 2010–2011 from coastal to deep-sea areas in the GoM. The analysis of numerous hydrocarbon compounds (N = 158) and sediment cores (N = 2,613) suggests that, 1.9 ± 0.9 × 104 metric tons of hydrocarbons (>C9 saturated and aromatic fractions) were deposited in …
Stable And Radiocarbon Isotopic Composition Of Dissolved Organic Matter In The Gulf Of Mexico, B. D. Walker, E. R. M. Druffel, J. Kolasinski, B. J. Roberts, X. Xu, B. E. Rosenheim
Stable And Radiocarbon Isotopic Composition Of Dissolved Organic Matter In The Gulf Of Mexico, B. D. Walker, E. R. M. Druffel, J. Kolasinski, B. J. Roberts, X. Xu, B. E. Rosenheim
Marine Science Faculty Publications
Dissolved organic carbon (DOC) is of primary importance to marine ecosystems and the global carbon cycle. Stable carbon (δ13C) and radiocarbon (Δ14C) isotopic measurements are powerful tools for evaluating DOC sources and cycling. However, the isotopic signature of DOC in the Gulf of Mexico (GOM) remains almost completely unknown. Here we present the first DOC Δ14C and δ13C depth profiles from the GOM. Our results suggest the Mississippi River exports large amounts of DOC with an anthropogenic “bomb” Δ14C signature. Riverine DOC is removed and recycled offshore, and some marine …