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SPECMAP Archive NO.1 - Climate Times Series, Downcore and Core-top Data

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The SPECMAP Archive No.1 was compiled by Brown University under the direction of A. Duffy and J. Imbrie with the assistance of A.C. Mix and A. Mcintyre, and funded by the National Science Foundation. The SPECMAP Archive No.1 contains climate times series of the past 400,000 years, and basic downcore and core-top data from which these time series were derived for 17 sediment cores from the Atlantic Ocean. Downcore records include (1) quantitative data on planktonic species and assemblages which reflect conditions in the surface waters of the Atlantic ocean; (2) measurements of 0-18, C-13 difference (planktic and benthic), and Cd/Ca. The age model used to transform each downcore record into a time series by correlation of its O-18 record with the published O-18 chronology of Imbrie et al. (1984) is given. Time series with uniformly spaced samples may be calculated by linear interpolation. The Archive No. 1 contains 101 files, including documentation and bibliographic information. The SPECMAR Archive No. 1 is available for direct ftp download from NCDC. The SPECMAP Archive No. 1 was originally submitted to NOAA's National Geophysical Data Center (NGDC) for archive and was subsequently transferred to NOAA's National Climatic Data Center (NCDC) Paleoclimatology Group for stewardship..
Cite this dataset when used as a source.
Online Access
Distribution Formats
Distributor Distributor information not available
Dataset No POCs available for this dataset
General Documentation
  • Publisher's landing page
    Web page of information about the database including links to full documentation and free data download.
Associated Resources
  • publication: 1991-12-31
  • revision: 1991-12-31
Edition: First
Data Presentation Form: Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete
Data Update Frequency: Not planned - Completed data set, no additions planned.
Supplemental Information:
Data also available through the World Data Center for Paleoclimatrology
Purpose: Paleoceanographic Research
Use Limitations
  • Please cite the originator of the data set, the date downloaded, and the National Centers for Environmental Information, NOAA, as the source of the data.
  • Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
  • Andrew Duffy
    Brown University
  • John Imbrie
    Lamont-Doherty Earth Observatory
  • Alan Mix
    Oregon State University
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Time Period: 1990-12-31 to 1990-12-31
Spatial Reference System:
Spatial Bounding Box Coordinates:
N: 53.933
S: -43.517
E: 160.483
W: -83.933
Spatial Coverage Map:
Theme keywords
  • Scientific archives
  • Electronic records
  • Oceanography
  • Ocean bottom
  • Geology
  • Submarine geology
  • Marine sediments
  • Marine geology
  • Sea-floor characteristics
  • EARTH SCIENCE > Paleoclimate > Ocean/Lake Records > Isotopes
  • EARTH SCIENCE > Paleoclimate > Ocean/Lake Records > Radiocarbon
  • EARTH SCIENCE > Paleoclimate > Ocean/Lake Records > Microfossils
  • EARTH SCIENCE > Paleoclimate > Ocean/Lake Records > Oxygen Isotopes
  • EARTH SCIENCE > Oceans > Marine Sediments
  • EARTH SCIENCE > OCEANS > Marine Sediments > Stratigraphic Sequence
  • EARTH SCIENCE > Paleoclimate > Ocean/Lake Records > Sediments
  • EARTH SCIENCE > PALEOCLIMATE > Ocean/Lake Records > Stratigraphic Sequence
Data Center keywords
  • WDC/PALEOCLIMATOLOGY, BOULDER > World Data Center for Paleoclimatology, Boulder
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Platform keywords
  • In Situ Ocean-based Platforms > SHIPS
Instrument keywords
  • In Situ/Laboratory Instruments > Corers > CORING DEVICES
  • In Situ/Laboratory Instruments > Corers > SEDIMENT CORERS
Place keywords
Project keywords
  • SPECMAP > Mapping Spectral Variability in Global Climate Project
  • ICSU-WDS > International Council for Science - World Data System
Use Constraints
  • While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Access Constraints
  • Access to this dataset is unrestricted.
  • free online download
Lineage information for: dataset
Lineage Statement Data originally submitted to NOAA's former National Geophysical Data Center (NGDC) then transferred to the former National Climatic Data Center (NCDC) Paleoclimatology for stewardship, both centers are now part of NOAA's National Centers for Environmental Information (NCEI). Processing and lineage prior to transmission to NGDC are unknown.
Processing Environment
Source Datasets
Lineage information for: Scope not available.
Acquisition Information (collection)
Last Modified: 2015-12-31
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