{"NOAAStudyId":"11752","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":"2011-06-30","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-11752.xml","doi":null,"earliestYearBP":2794800,"earliestYearCE":-2792850,"entryId":"noaa-ocean-11752","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"41025013, 40821091"},{"fundingAgency":"Chinese Academy of Sciences","fundingGrant":"'100 Talent Program'"},{"fundingAgency":"Marie Curie Fellowship","fundingGrant":"7555"}],"investigators":"Bailey, I.; Liu, Q.; Swann, G.E.A.; Jiang, Z.; Sun, Y.; Zhao, X.; Roberts, A.P.","mostRecentYearBP":1809100,"mostRecentYearCE":-1807150,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/11752","originalSource":null,"publication":[{"abstract":"Increases in the low-field mass-specific magnetic susceptibility (X), \r\ndropstones and the terrigenous sediment component from Ocean Drilling \r\nProgram (ODP) Site 882 (~45°N) have been interpreted to indicate a \r\nmajor onset of ice-rafting to the sub-Arctic northwest Pacific Ocean \r\nduring marine isotope stage (MIS) G6 (from ~2.75 Ma). In contrast, \r\nstudies of the terrigenous content of sediments cored downwind of \r\nODP Site 882 indicate that dust and disseminated volcanic ash \r\ndeposition in the sub-Arctic Pacific increased markedly during MIS G6. \r\nTo investigate the relative contribution of dust, volcanic ash and ice \r\nrafting to the Pliocene X increase, we present new high-resolution \r\nenvironmental magnetic and ice-rafted debris records from ODP Sites \r\n882 and 885. Our results demonstrate that the X increase at both sites \r\nacross MIS G6 is predominantly controlled by a previously overlooked \r\nmixture of aeolian dust and volcanic ash. Our findings call into \r\nquestion the reliability of X as a proxy for ice-rafting to the North \r\nPacific. They also highlight a previously undocumented link between \r\niron fertilisation and biogeochemical cycling in the North Pacific \r\nat a key stage during intensification of late Pliocene northern \r\nhemisphere glaciation. \r\n","author":null,"citation":"Bailey, I., Q. Liu, G.E.A. Swann, Z. Jiang, Y. Sun, X. Zhao, \r\nand A.P. Roberts. 2011.\r\nIron fertilisation and biogeochemical cycles in the sub-Arctic \r\nnorthwest Pacific during the late Pliocene intensification \r\nof northern hemisphere glaciation. \r\nEarth and Planetary Science Letters, Vol. 307, Issues 3-4, \r\n15 July 2011, pp. 253-265.   doi:10.1016/j.epsl.2011.05.029\r\n","edition":null,"identifier":{"id":"10.1016/j.epsl.2011.05.029","type":"doi","url":"http://dx.doi.org/10.1016/j.epsl.2011.05.029"},"issue":null,"journal":"Earth and Planetary Science Letters","pages":null,"pubRank":"1","pubYear":2011,"reportNumber":null,"title":"Iron fertilisation and biogeochemical cycles in the sub-Arctic  northwest Pacific during the late Pliocene intensification  of northern hemisphere glaciation","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"36958","geo":{"geoType":"Feature","geometry":{"coordinates":["50.35","167.5833"],"type":"POINT"},"properties":{"easternmostLongitude":"167.5833","maxElevationMeters":"-3244","minElevationMeters":"-3244","northernmostLatitude":"50.35","southernmostLatitude":"50.35","westernmostLongitude":"167.5833"}},"locationName":"Ocean>Pacific Ocean>North Pacific Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"20051","coreLengthMeters":36,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>lithology","earth science>paleoclimate>paleocean>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bailey2011/bailey2011.txt","linkText":"bailey2011.txt","urlDescription":"Original Data and Full Metadata","variables":[{"cvAdditionalInfo":"lithics + fresh volcanics > 150 um (x 103)","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count per square centimeter per kiloyear","cvWhat":"geological material>bulk geological material>mineral matter"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>diatom","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VSMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"per mil NBS28","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>diatom","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil","cvWhat":"chemical composition>isotope>isotope ratio>delta 30Si"},{"cvAdditionalInfo":"C. marginatus","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"biological material>organism>diatom>identified diatom"},{"cvAdditionalInfo":"C. radiatus","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"biological material>organism>diatom>identified diatom"},{"cvAdditionalInfo":"other diatoms","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"biological material>organism>diatom>identified diatom"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth>depth at sample end"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth>depth at sample start"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":"composited","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"lithics > 150 um","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count per gram","cvWhat":"geological material>bulk geological material>mineral matter"},{"cvAdditionalInfo":"lithics > 150 um (x 103)","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count per square centimeter per kiloyear","cvWhat":"geological material>bulk geological material>mineral matter"},{"cvAdditionalInfo":"lithics + fresh volcanics > 150 um","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count per gram","cvWhat":"geological material>bulk geological material>mineral matter"}]},{"NOAAKeywords":["earth science>paleoclimate>paleocean>lithology","earth science>paleoclimate>paleocean>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bailey2011/bailey2011.xls","linkText":"bailey2011.xls","urlDescription":"Original Data and Full Metadata","variables":[]}],"dataTableName":"9-12H","dataTableNotes":null,"earliestYear":2794800,"earliestYearBP":2794800,"earliestYearCE":-2792850,"mostRecentYear":1809100,"mostRecentYearBP":1809100,"mostRecentYearCE":-1807150,"species":[],"timeUnit":"cal yr BP"}],"siteName":"ODP 882"}],"studyCode":null,"studyName":"Northwest Pacific ODP882 Plio-Pleistocene Lithic and Diatom Isotope Data ","studyNotes":"Coarse lithic and diatom stable silicon isotope data \nfor the Plio-Pleistocene from ODP Site 882A, determined \nusing grain counts and a Finnigan MAT 253 stable isotope \nratio mass spectrometre (using step-wise fluorination, \nwith silicon collected as SiF4), respectively. \n\nODP Site 882 lithic count data: \nCoarse lithic (>150um) abundance and flux estimates. \nData reported as lithics and lithics plus fresh volcanic \nglass. Coarse lithic fluxes were calculated following \nPeck et al. (2007). Sedimentation rates were estimated from \nthe Site 882 astronomical age model (Tiedemann and Haug, 1995) \nand shipboard derived dry-bulk density and GRAPE data. \n\nODP Site 882 diatom isotopes: \nd30Si diatom measurements (n=30) for the interval ~2.85-2.55 Ma \nat ODP Site 882. Diatoms were extracted using existing techniques \nwith analysed (75-150um) fractions dominated by two taxa; \nCoscinodiscus marginatus (Ehrenb.) and C. radiatus (Ehrenb.) \n(Swann, 2010). d30Sidiatom was analysed using step-wise \nfluorination at the NERC Isotope Geosciences Laboratory, U.K.,  \t   \nwith silicon collected as SiF4. Measurements were made on a \nFinnigan MAT 253 stable isotope ratio mass spectrometre with \nvalues corrected using NIGL within-run laboratory diatom standard \nBFCmod against NBS28 (Leng and Sloane, 2008). \n\n","version":"1.0","xmlId":"9915"}