noaa-ocean-6420 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2024-01-22 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Equatorial Pacific Sediment Composition and Radionuclide Data 2006-07-01 publication doi:10.25921/81mf-h347 noaa-ocean-6420 NCEI DSI 1200_02 NCEI DSI 1200_01 Bradtmiller, L.I. originator Bradtmiller, L.I. author Anderson, R.F. originator Anderson, R.F. author Fleisher, M.Q. originator Fleisher, M.Q. author Burckle, L.H. originator Burckle, L.H. author NOAA National Centers for Environmental Information publisher tableDigital 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 South Pacific Ocean. The time period coverage is from 475800 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. 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. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-ocean.png Paleoclimatology - Paleoceanography PNG Earth Science > Paleoclimate > Ocean/Lake Records Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleocean > age control earth science > paleoclimate > paleocean > lithology earth science > paleoclimate > paleocean > radiogenic isotope theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian What: 231Pa excess; Material: sediment What: 230Th; Material: sediment What: 231Pa; Material: sediment What: 232Th; Material: sediment What: 230Th; Material: sediment What: 230Th; Material: sediment What: 230Th; Material: sediment What: 231Pa; Material: sediment What: 231Pa/230Th excess; Material: sediment What: biogenic silica; Material: sediment What: 238U; Material: sediment What: age; Material: null What: 230Th; Material: sediment What: 234U; Material: sediment What: 230Th; Material: sediment What: 230Th; Material: sediment What: 230Th; Material: sediment What: 230Th; Material: sediment What: 230Th; Material: sediment What: 234U; Material: sediment What: 238U; Material: sediment What: age; Material: null What: 230Th; Material: sediment What: 232Th; Material: sediment What: age; Material: null What: 230Th; Material: sediment What: 230Th; Material: sediment What: calcium carbonate; Material: sediment What: depth; Material: null What: 230Th excess; Material: sediment theme Paleoenvironmental Standard Terms (PaST) Thesaurus NOAA National Centers for Environmental Information https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus PaST Thesaurus information publisher Ocean > Pacific Ocean > South Pacific Ocean > V19-30 > LATITUDE -3 > LONGITUDE -83 Ocean > Pacific Ocean > South Pacific Ocean > MW91-9 GGC48 > LATITUDE 0 > LONGITUDE 161 Ocean > Pacific Ocean > North Pacific Ocean > RC17-177 > LATITUDE 2 > LONGITUDE 159 Ocean > Pacific Ocean > South Pacific Ocean > TT013-PC18 > LATITUDE -1.83 > LONGITUDE -139.7 Ocean > Pacific Ocean > South Pacific Ocean > RC13-114 > LATITUDE -1.65 > LONGITUDE -103.63 Ocean > Pacific Ocean > North Pacific Ocean > V28-203 > LATITUDE .95 > LONGITUDE -179.42 Ocean > Pacific Ocean > South Pacific Ocean > RC13-140 > LATITUDE -2.87 > LONGITUDE -87.75 Ocean > Pacific Ocean > North Pacific Ocean > TT013-PC72 > LATITUDE .1 > LONGITUDE -139.4 Ocean > Pacific Ocean > South Pacific Ocean > RC11-238 > LATITUDE -1.52 > LONGITUDE -85.82 Ocean > Pacific Ocean > South Pacific Ocean > MD97-2138 > LATITUDE -1.25 > LONGITUDE 146.23 Ocean > Pacific Ocean > South Pacific Ocean > V21-40 > LATITUDE -5.52 > LONGITUDE -106.77 place DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Cite as: Bradtmiller, L.I.; Anderson, R.F.; Fleisher, M.Q.; Burckle, L.H. (2006-07-01): NOAA/WDS Paleoclimatology - Equatorial Pacific Sediment Composition and Radionuclide Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/81mf-h347. Accessed [date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose otherRestrictions None otherRestrictions Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. Diatom productivity in the equatorial Pacific Ocean from the last glacial period to the present: A test of the silicic acid leakage hypothesis 2006 publication Bradtmiller, L.I., R.F. Anderson, M.Q. Fleisher, and L.H. Burckle author Paleoceanography publisher https://doi.org/10.1029/2006PA001282 HTTPS Web Browser Associated Reference published 2006 Bradtmiller, L.I., R.F. Anderson, M.Q. Fleisher, and L.H. Burckle, 2006: Diatom productivity in the equatorial Pacific Ocean from the last glacial period to the present: A test of the silicic acid leakage hypothesis. Paleoceanography, 21, , 10.1029/2006PA001282 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 475800 cal yr BP to 0 cal yr BP; -179.42 161 -5.52 2 -473850 1950 ABSTRACT SUPPLIED BY ORIGINATOR: The silicic acid leakage hypothesis (SALH) suggests that during glacial periods, unused silicic acid escaped the Southern Ocean into the equatorial oceans, causing an ecological shift favoring diatoms relative to coccolithophorids and a drawdown of CO2. The 230Th normalized opal fluxes and 231Pa/230Th ratios were measured in eleven equatorial Pacific cores to reconstruct diatom productivity over the past 30 kyr and to test the SALH. Holocene spatial patterns of opal flux are strongly correlated with 231Pa/230Th ratios and with satellite estimates of primary productivity. Down-core opal flux records do not support the SALH but show Holocene opal burial to exceed that of the late glacial period by 35%, or 2.8 Gt opal/kyr, across the equatorial Pacific. This suggests that the SALH may not account for lower atmospheric CO2 levels during the late glacial. However, the data do support results from previous studies that invoke increased El Niño-like conditions during this time. NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Native Format(s) https://doi.org/10.25921/81mf-h347 HTTPS Landing Page Metadata Landing Page NCEI landing page with general information and links to access the data. information https://www.ncei.noaa.gov/access/paleo-search/study/6420 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/paleoceanography HTTPS Information NCEI Paleoceanography Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/v28203lb-tab.txt HTTPS Download /paleocean/sediment_files/complete/v28203lb-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/v21-40lb-tab.txt HTTPS Download /paleocean/sediment_files/complete/v21-40lb-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/v19-30lb-tab.txt HTTPS Download /paleocean/sediment_files/complete/v19-30lb-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/tpc72-lb-tab.txt HTTPS Download /paleocean/sediment_files/complete/tpc72-lb-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/tpc18-lb-tab.txt HTTPS Download /paleocean/sediment_files/complete/tpc18-lb-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/rc13-114-tab.txt HTTPS Download /paleocean/sediment_files/complete/rc13-114-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/r17177lb-tab.txt HTTPS Download /paleocean/sediment_files/complete/r17177lb-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/r13140lb-tab.txt HTTPS Download /paleocean/sediment_files/complete/r13140lb-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/r11238lb-tab.txt HTTPS Download /paleocean/sediment_files/complete/r11238lb-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/m97-2138-tab.txt HTTPS Download /paleocean/sediment_files/complete/m97-2138-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/m9-ggc48-tab.txt HTTPS Download /paleocean/sediment_files/complete/m9-ggc48-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/bradtmiller2006 HTTPS Download /contributions_by_author/bradtmiller2006 Original Data and Full Metadata download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21