NOAA/WDS Paleoclimatology - Jordan Basin, Gulf of Maine 25KYr Foraminiferal Census Data
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Paleoceanography. The data include parameters of paleoceanography with a geographic location of Gulf Of Maine, North Atlantic Ocean. The time period coverage is from 25000 to 0 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
- Cite as: Keigwin, L.D.; Pilskaln, C.H. (2014-07-22): NOAA/WDS Paleoclimatology - Jordan Basin, Gulf of Maine 25KYr Foraminiferal Census Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/mc3s-8584. Accessed [date].
- Please refer to Credit tab for full citation information.
- doi:10.25921/mc3s-8584
- noaa-ocean-16974
- NCEI DSI 1200_02
- NCEI DSI 1200_01
noaa-ocean-16974
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Distributor | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | Data Center Contact
NOAA World Data Service for Paleoclimatology 828-271-4800 paleo@noaa.gov |
Coverage Description | Date Range: 25000 cal yr BP to 0 cal yr BP; |
Time Period | -23050 to 1950 |
Spatial Bounding Box Coordinates |
N: 43.483033
S: 43.38225
E: -67.76118
W: -67.882617
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Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns
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Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Data update frequency not available |
Supplemental Information |
STUDY NOTES: Planktonic foraminifer counts and sediment stable isotope (d18O and d13C) data, plus core logger (gamma ray and magnetic susceptibility) data from three cores collected in the Jordan Basin, Gulf of Maine.
ABSTRACT SUPPLIED BY ORIGINATOR: We report planktonic foraminiferal fluxes (accumulation rates) and oxygen isotopes (d18O) from a nine-month sediment trap deployment, and d18O from three sediment cores in Jordan Basin, Gulf of Maine. The sediment trap was deployed at 150 m, about halfway to the basin floor, and samples were collected every three weeks between August 2010 and May 2011. The planktonic foraminiferal fauna in the trap is dominated by Neogloboquadrina incompta that reached a maximum flux in the second half of October. Oxygen isotope ratios on that species indicate that on average during the collecting period it lived in the surface mixed layer, when compared to predicted values based on data from a nearby hydrographic buoy from the same period. New large diameter piston cores from Jordan Basin are 25 and 28 m long. Marine hemipelagic sediments are 25 m thick, and the sharp contact with underlying red deglacial sediments is bracketed by two radiocarbon dates on bivalves that indicate ice-free conditions began 16,900 calibrated years ago. Radiocarbon dating of foraminifera indicates that the basin floor sediments (270-290 m) accumulated at >3 m/kyr during the Holocene, whereas rates were about one tenth that on the basin slope (230 m). In principle, Jordan Basin sediments have the potential to provide time series with interannual resolution. Our results indicate the Holocene is marked by ~2C variability in SST, and the coldest events of the 20th century, during the mid 1960s and mid 1920s, appear to be recorded in the uppermost 50 cm of the seafloor. |
Purpose | Records of past climate and ocean circulation derived from marine sediments. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. |
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Theme keywords | Global Change Master Directory (GCMD) Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Last Modified: 2024-05-13
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