Lynch-Stieglitz, Jean; Curry, William B; Slowey, Niall C (1999): Oxygen isotope composition of benthic foraminifera ofthe Florida Street [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.856874, Supplement to: Lynch-Stieglitz, J et al. (1999): A geostrophic transport estimate for the Florida Current from the oxygen isotope composition of benthic foraminifera. Paleoceanography, 14(3), 360-373, https://doi.org/10.1029/1999PA900001
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Abstract:
We present a new method for the quantitative reconstruction of upper ocean flows for during times in the past. For the warm (T>5°C) surface ocean, density can be accurately reconstructed from calcite precipitated in equilibrium with seawater, as both of these properties increase with decreasing temperature and increasing salinity. Vertical density profiles can be reconstructed from the oxygen isotopic composition of benthic foraminifera. The net volume transport between two vertical density profiles can be calculated using the geostrophic method. Using benthic foraminifera from surface sediment samples from either side of the Florida Straits (Florida Keys and Little Bahama Bank), we reconstruct two vertical density profiles and calculate a volume transport of 32 Sv using this method. This agrees well with estimates from physical oceanographic methods of 30-32 Sv for the mean annual volume transport. We explore the sensitivity of this technique to various changes in the relationship between temperature and salinity as well as salinity and the oxygen isotopic composition of seawater.
Related to:
Lynch-Stieglitz, Jean; Curry, William B; Slowey, Niall C (2008): NOAA/WDS Paleoclimatology - Lynch-Stieglitz et al 1999 Florida Straits Benthic Foram Isotopic Data. NOAA National Centers for Environmental Information, https://doi.org/10.25921/04PN-EQ85
Coverage:
Median Latitude: 25.331947 * Median Longitude: -80.621059 * South-bound Latitude: 24.330000 * West-bound Longitude: -83.470000 * North-bound Latitude: 26.590000 * East-bound Longitude: -77.670000
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Lynch-Stieglitz, J; Curry, WB; Slowey, NC (1999): Stable isotopic composition of benthic foraminifera in Florida Keys sediments. https://doi.org/10.1594/PANGAEA.856872
- Lynch-Stieglitz, J; Curry, WB; Slowey, NC (1999): Stable isotopic composition of benthic foraminifera in Little Bahamas Banks sediments. https://doi.org/10.1594/PANGAEA.856873