Insights from barium variability in a Siderastrea siderea coral in the northwestern Gulf of Mexico.
Mar Pollut Bull
; 173(Pt A): 112930, 2021 Dec.
Article
em En
| MEDLINE
| ID: mdl-34592503
Coral Ba/Ca is a proxy for seawater barium concentration that varies with upwelling, terrigenous input, and marine productivity whereas coral Sr/Ca varies with temperature. We examine monthly coral Ba/Ca and Sr/Ca before and during offshore oil exploration in a Siderastrea siderea coral from West Flower Garden Bank located on the continental shelf edge in the Gulf of Mexico. Coral Ba/Ca variations lack pulses driven by upwelling or river outflow and are not in sync with coral Sr/Ca that exhibit a different seasonal pattern. Seasonal variations in chlorophyll-a concentration negatively correlate with coral Ba/Ca explaining 25% of that variability. A significant increase in mean coral Ba/Ca of 1.76 µmol/mol between 1931-1944 and 1976-2004 corresponds to the increase in the United States barite production and consumption primarily used in offshore oil drilling, which escalated in the 1970s, suggesting oil drilling operations are increasing seawater Ba concentration in the Gulf of Mexico.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Antozoários
Limite:
Animals
País/Região como assunto:
Mexico
Idioma:
En
Revista:
Mar Pollut Bull
Ano de publicação:
2021
Tipo de documento:
Article
País de publicação:
Reino Unido