Coupled oxygen and dissolved inorganic carbon dynamics in coastal ocean and its use as a potential indicator for detecting water column oil degradation

Hu, Xinping; Cai, Wei-Jun; Rabalais, Nancy N.; Xue, Jianhong

doi:10.1016/j.dsr2.2014.01.010

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i

Coupled oxygen and dissolved inorganic carbon dynamics in coastal ocean and its use as a potential indicator for detecting water column oil degradation

2016
By Hu, Xinping ; Cai, Wei-Jun ; Rabalais, Nancy N. ; ...
Source: Deep Sea Research Part II: Topical Studies in Oceanography, 129:311-318

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Journal Title:

Deep Sea Research Part II: Topical Studies in Oceanography
Personal Author:

Hu, Xinping ; Cai, Wei-Jun ; Rabalais, Nancy N. ; Xue, Jianhong

Hu, Xinping ; Cai, Wei-Jun ; Rabalais, Nancy N. ; Xue, Jianhong Less -
NOAA Program & Office:

NOS (National Ocean Service) ; NCCOS (National Centers for Coastal Ocean Science) ; DWH (Deepwater Horizon)

NOS (National Ocean Service) ; NCCOS (National Centers for Coastal Ocean Science) ; DWH (Deepwater Horizon) Less -
Description:

Following the disastrous 2010 Deepwater Horizon oil spill, numerous studies have been carried out to investigate the impact of the oil spill on a variety of environments. However, it is currently unknown whether the spilled oil transported to the coastal ocean has caused any discernible perturbation to the inorganic chemistry of the water column. In this work we compared and contrasted a multiyear dataset (2006–2012) collected in the northern Gulf of Mexico continental shelf, an area subject to frequent summer hypoxia. Before and after the oil spill, apparent oxygen utilization (AOU) and dissolved inorganic carbon (DIC) in bottom water samples all showed consistent relationship that was close to Redfield reaction stoichiometry. However, we observed a possible oil degradation signal in the bottom waters during a July 2010 cruise as manifested by a significant deviation from all other years in the relationship between AOU and DIC. Based on stable carbon isotope analysis of bottom water DIC from a July 2011 cruise in the same region, oil carbon degradation in the water column was likely negligible and the shelf water had returned to the pre-spill conditions.
Keywords:

[+]

BP Deepwater Horizon Explosion And Oil Spill, 2010 Carbon Hypoxia
Source:

Deep Sea Research Part II: Topical Studies in Oceanography, 129:311-318
DOI:

https://doi.org/10.1016/j.dsr2.2014.01.010
Document Type:

Journal Article
Funding:

Grant no. NA09NOS4780204
Place as Subject:

Mexico, Gulf of
Rights Information:

Accepted Manuscript
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CHORUS
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urn:sha256:0f2da3199edb6d18365379b10fbe7bcc918121cfd14695dc044aa43984b56f4d
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https://repository.library.noaa.gov/view/noaa/49546/noaa_49546_DS1.pdf
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Coupled oxygen and dissolved inorganic carbon dynamics in coastal ocean and its use as a potential indicator for detecting water column oil degradation

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