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Subantarctic Foraminiferal Mg/Ca Data and SST Reconstruction Entry ID: NOAA_NCDC_PALEO_2001-022 |
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Summary
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Abstract:
This data set consists of Globigerina bulloides Mg/Ca as a paleotemperature proxy. Indicated glacial-interglacial changes in sea surface temperature (SST) are about 4°C cooler in the Subantarctic Indian Ocean and 2.5°C cooler in the Subantarctic Pacific. Mg/Ca-based SST estimates and d18O determinations are then used to generate site-specific seawater d18O records. Data precision: Mg/Ca, ±2.1%; SST (est.), ±0.8°C; O18w (est.), ±0.2" G. bulloides O18 interpolated from Hays et al., 1976 and Imbrie et al., 1992, Mg/Ca data on cleaned G. bulloides shells by ICP-MS, SST estimates based on eq. (5) in Mashiotta et al., 1999, O18w calculated from bulloides O18 data, Mg/Ca-temperature estimates and Shackleton, 1974 paleo-temperature equation. chrono-strat info: SPECMAP age model from Imbrie et al, 1992 File E11-2.txt Core E11-2 56°04'S 115°05'W 3094m water depth Variables and units: Depth (cm), Age (ky), N. pachyderma (s) O18 (PDB), Mg/Ca (mmol/mol), SST (°C), O18w (SMOW) Data precision: Mg/Ca, ±2.1%; SST (est.), ±1°C; O18w (est.), ±0.2" N. pachyderma (s) O18 interpolated from Ninnemann and Charles, 1997, Mg/Ca data on cleaned N. pachyderma (s) shells by ICP-MS, SST estimates based on eq. (6) in Mashiotta et al., 1999, O18w calculated from pachyderma O18 data, Mg/Ca-temperature estimates and Shackleton, 1974 paleo-temperature equation. chrono-strat info: calendar age model from Ninnemann and Charles, 1997 |
Related URL
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Link:
GET DATA
Description: Access to data files Link: VIEW RELATED INFORMATION Description: Access to documentation |
Geographic Coverage
| N: -43.52 | S: -43.52 | E: 79.87 | W: 79.87 |
| Max Depth: 3135 M |
| N: -54.07 | S: -54.07 | E: -115.08 | W: -115.08 |
| Max Depth: 3094 M |
Data Set Citation
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Dataset Originator/Creator:
Mashiotta, T. A., D.W. Lea, and H.J. Spero
Dataset Title: Subantarctic Foraminiferal Mg/Ca Data and SST Reconstruction Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2001-022 Dataset Release Date: 3/2001 Dataset Release Place: Boulder, CO Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology Issue Identification: 2001-022 Other Citation Details: NOAA/NCDC Paleoclimatology Program Online Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/mas... |
Paleo_Temporal_Coverage
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Paleo Start Date:
290 ka
Paleo Stop Date: 0 ka Chrono Unit: |
Location Keywords
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OCEAN
> SOUTHERN OCEAN
GEOGRAPHIC REGION > POLAR |
Science Keywords
| PALEOCLIMATE >OCEAN/LAKE RECORDS >ISOTOPES [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >MICROFOSSILS [Definition] |
| PALEOCLIMATE >OCEAN/LAKE RECORDS >OXYGEN ISOTOPES [Definition] |
| PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >SEA SURFACE TEMPERATURE RECONSTRUCTION [Definition] |
| BIOLOGICAL CLASSIFICATION >PROTISTS >AMOEBOIDS >FORAMINIFERS [Definition] |
ISO Topic Category
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GEOSCIENTIFIC INFORMATION
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Project
| PAGES >Past Global Changes, IGBP [Information] |
Keywords
| Sea Surface Temperature |
| SST Reconstruction |
| d18O |
| Mg/Ca |
| Subantarctic Pacific |
Data Set Progress
| COMPLETE |
Originating Center
| NOAA/NCDC |
Data Center
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World Data Center for Paleoclimatology, Boulder
[Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/
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Distribution
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Distribution_Media:
ftp
Distribution_Format: text Fees: none |
Personnel
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DAVID
W.
LEA Role: INVESTIGATOR Phone: (805) 893-8665 Fax: (805) 893-2314 Email: lea at magic.ucsb.edu Contact Address: Department of Geological Sciences and Marine Science Institute University of California City: Santa Barbara Province or State: CA Postal Code: 93106 Country: USA |
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T.
A.
MASHIOTTA Role: INVESTIGATOR |
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HOWARD
J.
SPERO Role: INVESTIGATOR Contact Address: Department of Geology University of California City: Davis Province or State: CA Postal Code: 95616 Country: USA |
Publications/References
Mashiotta, T. A., D.W. Lea, and H.J. Spero, 1999. Glacial-interglacial changes
in Subantarctic sea surface temperature and d18O-water using foraminiferal Mg.
Earth Planet. Sci. Lett. 170, 417-432.
in Subantarctic sea surface temperature and d18O-water using foraminiferal Mg.
Earth Planet. Sci. Lett. 170, 417-432.
Creation and Review Dates
DIF Creation Date:
2006-12-08
Last DIF Revision Date:
2007-02-09
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