{"NOAAStudyId":"2609","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"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.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2001-07-01","dataPublisher":"NOAA","dataType":"PALEOCEANOGRAPHY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/paleoceanography","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-ocean-2609.xml","doi":null,"earliestYearBP":1936453,"earliestYearCE":-1934503,"entryId":"noaa-ocean-2609","funding":[],"investigators":"McIntyre, K.; Delaney, M.L.; Ravelo, A.C.","mostRecentYearBP":1752848,"mostRecentYearCE":-1750898,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/2609","originalSource":null,"publication":[{"abstract":"We generated 200--500 year resolution records of oceanic processes in the North Atlantic (Ocean Drilling Program Site 983, 60°24'N, 23°38'W, 1983 meters water depth) for intervals in the latest Pliocene (1.86--1.93 Ma) and the earliest Pleistocene (1.75--1.83 Ma) in order to examine the linkages between millennial-scale variations in the ocean and background glacial-interglacial climate change. Within glacial intervals we find evidence for variations similar to those observed in the late Pleistocene. We find discrete ice-rafted debris (IRD) events that reoccur every 2--5 kyr. These events are preceded by a short cooling and accompanied by a reorganization of glacial deep waters. The timing of IRD events in the late Pliocene and early Pleistocene intervals is similar to that of Dansgaard-Oeschger cycles, but we find no IRD events comparable in timing to late Pleistocene Heinrich events. Although interglacial intervals are much more stable, we do find evidence for low-amplitude variations in deep water properties that reoccur every ~2 kyr within interglacial intervals. The similarity between our late Pliocene-early Pleistocene records and late Pleistocene records implies that the mechanism driving millennial-scale variations cannot be uniquely attributed to the strongly nonlinear linkage between climate and insolation and the large ice sheets of the late Pleistocene.","author":null,"citation":"McIntyre, K., M.L. Delaney, and A.C. Ravelo. 2001. Millennial-scale climate change and oceanic processes in the late Pliocene and early Pleistocene. Paleoceanography 16(5):535-543.","edition":null,"identifier":null,"issue":null,"journal":"Paleoceanography","pages":null,"pubRank":"1","pubYear":2001,"reportNumber":null,"title":"Millennial-scale climate change and oceanic processes in the late Pliocene and early Pleistocene","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"19239","geo":{"geoType":"Feature","geometry":{"coordinates":["60.4","-23.63"],"type":"POINT"},"properties":{"easternmostLongitude":"-23.63","maxElevationMeters":"-1983","minElevationMeters":"-1983","northernmostLatitude":"60.4","southernmostLatitude":"60.4","westernmostLongitude":"-23.63"}},"locationName":"Ocean>Atlantic Ocean>North Atlantic Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"4293","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>carbon isotopes","earth science>paleoclimate>paleocean>oxygen isotopes","earth science>paleoclimate>paleocean>age 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