Variability of the [delta][sup 13]C of dissolved inorganic carbon at a site in the north Pacific Ocean

Journal Article · Tue Sep 01 04:00:00 EDT 1992 · Geochimica et Cosmochimica Acta; (United States)

DOI:https://doi.org/10.1016/0016-7037(92)90402-5· OSTI ID:6991784

McNichol, A P; Druffel, E R.M. ^[1]

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1. Woods Hole Oceanographic Inst., MA (United States)

The authors present a depth profile of [delta][sup 13]C-DIC (dissolved inorganic carbon) and a time-series of surface water [delta][sup 13]C-DIC from seawater samples collected at a single site during the Eve cruise in the North Pacific in June of 1987. Their deep water results confirm those reported by KROOPNICK (1985) for GEOSECS Station 214 (10[degree] west of Eve site). They observed a small but significant decrease in the [delta][sup 13]C of DIC in the upper 500 m of the water column over 13 years since the GEOSECS survey. This is likely due, at least in part, to the input of additional fossil fuel-derived CO[sub 2] to the upper ocean. They observed a significant change in surface water mass. This change emphasizes the need for caution when conducting seasonal studies.

• OSTI ID: 6991784
• Journal Information: Geochimica et Cosmochimica Acta; (United States), Journal Name: Geochimica et Cosmochimica Acta; (United States) Vol. 56:9; ISSN GCACAK; ISSN 0016-7037
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580000* -- Geosciences
CARBON 13
CARBON ISOTOPES
CHEMICAL COMPOSITION
CHEMISTRY
EVEN-ODD NUCLEI
GEOCHEMISTRY
HYDROGEN COMPOUNDS
ISOTOPES
LIGHT NUCLEI
NUCLEI
OXYGEN COMPOUNDS
PACIFIC OCEAN
SEAS
SEASONAL VARIATIONS
SEAWATER
STABLE ISOTOPES
SURFACE WATERS
VARIATIONS
WATER
WATER CHEMISTRY