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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."},"dataType":"PALEOCEANOGRAPHY","investigators":"Pride, C.; Thunell, R.C.; Sigman, D.M.; Keigwin, L.D.; Altabet, M.A.; Tappa, E.J.","investigatorDetails":[{"firstName":"Carol","lastName":"Pride","initials":"C.","orcId":null},{"firstName":"Robert","lastName":"Thunell","initials":"R.C.","orcId":"0000-0001-7052-1707"},{"firstName":"Daniel","lastName":"Sigman","initials":"D.M.","orcId":"0000-0002-7923-1973"},{"firstName":"Lloyd","lastName":"Keigwin","initials":"L.D.","orcId":null},{"firstName":"Mark","lastName":"Altabet","initials":"M.A.","orcId":null},{"firstName":"Eric","lastName":"Tappa","initials":"E.J.","orcId":"0000-0002-2142-5820"}],"version":"1.0","funding":[],"studyNotes":null,"onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/2595","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-ocean-2595.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-ocean-2595.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/paleoceanography","studyCode":null,"scienceKeywords":null,"reconstruction":"N","contributionDate":"1999-07-01","entryId":"noaa-ocean-2595","earliestYearBP":null,"mostRecentYearBP":null,"earliestYearCE":null,"mostRecentYearCE":null,"publication":[{"author":{"name":"Pride, C., R.C. Thunell, D. Sigman, L.D. Keigwin, M.A. Altabet, and E. Tappa"},"pubYear":1999,"title":"Nitrogen isotopic variations in the Gulf of California since the last deglaciation: Response to global climate change","journal":"Paleoceanography","volume":"14","edition":null,"issue":"3","pages":"397-409","reportNumber":null,"citation":"Pride, C., R.C. Thunell, D. Sigman, L.D. Keigwin, M.A. Altabet, and E. Tappa. 1999. Nitrogen isotopic variations in the Gulf of California since the last deglaciation: Response to global climate change. Paleoceanography, 14(3), 397-409. doi: 10.1029/1999PA900004","type":"publication","identifier":{"type":"doi","id":"10.1029/1999PA900004","url":"http://dx.doi.org/10.1029/1999PA900004"},"abstract":"High-resolution records of the nitrogen isotopic composition of organic matter (´15Norg), opal content, and opal accumulation rates from the central Gulf of California reveal large and abrupt variations during deglaciation and gradual Holocene changes coincident with climatic changes recorded in the North Atlantic. Homogenous sediments with relatively low ´15Norg values and low opal content were deposited at the end of the last glacial period, during the Younger-Dryas event, and during the middle to late Holocene. In contrast, laminated sediments deposited in the two deglacial stages are characterized by very high ´15Norg values (>140) and opal accumulation rates (2941 mg cm2 yr1). Abrupt shifts in ´15Norg were driven by widespread changes in the extent of suboxic subsurface waters supporting denitrification and were amplified in the central gulf record due to variations in upwelling, vertical mixing, and/or the latitudinal position of the Intertropical Convergence Zone.","pubRank":"1"}],"site":[{"NOAASiteId":"19220","siteName":"GGC55","siteCode":null,"mappable":"Y","locationName":"Ocean>Pacific Ocean>North Pacific 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