{"NOAAStudyId":"5487","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":"2000-01-01","dataPublisher":"NOAA","dataType":"PALEOLIMNOLOGY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/lake","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-5487.xml","doi":null,"earliestYearBP":15090,"earliestYearCE":-13140,"entryId":"noaa-lake-5487","funding":[],"investigators":"Rodbell, D.","mostRecentYearBP":-26,"mostRecentYearCE":1976,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/5487","originalSource":null,"publication":[{"abstract":"Debris flows have deposited inorganic laminae in an alpine lake that is 75 kilometers east of the Pacific Ocean, in Ecuador. These storm-induced events were dated by radiocarbon, and the age of laminae that are less than 200 years old matches the historic record of El Niño events. From about 15,000 to about 7000 calendar years before the present, the periodicity of clastic deposition is greater than or equal to 15 years; thereafter, there is a progressive increase in frequency to periodicities of 2 to 8.5 years. This is the modern El Niño periodicity, which was established about 5000 calendar years before the present. This may reflect the onset of a steeper zonal sea surface temperature gradient, which was driven by enhanced trade winds. ","author":{"name":"Donald T. Rodbell, Geoffrey O. Seltzer, David M. Anderson, Mark B. Abbott, David B. Enfield, and Jeremy H. Newman\r\n"},"citation":"Donald T. Rodbell, Geoffrey O. Seltzer, David M. Anderson, Mark B. Abbott, David B. Enfield, and Jeremy H. Newman\r\n. 1999. An ~15,000-Year Record of El Niño-Driven Alluviation in Southwestern Ecuador . Science, 283(5401), 516-520. doi: 10.1126/science.283.5401.516","edition":null,"identifier":{"id":"10.1126/science.283.5401.516","type":"doi","url":"http://dx.doi.org/10.1126/science.283.5401.516"},"issue":"5401","journal":"Science","pages":"516-520","pubRank":"1","pubYear":1999,"reportNumber":null,"title":"An ~15,000-Year Record of El Niño-Driven Alluviation in Southwestern Ecuador ","type":"publication","volume":"283"}],"reconstruction":"N","scienceKeywords":["PAGES LOTRED SA2k","PAGES 2k Network"],"site":[{"NOAASiteId":"8966","geo":{"geoType":"Feature","geometry":{"coordinates":["-2.76667","-79.23333"],"type":"POINT"},"properties":{"easternmostLongitude":"-79.23333","maxElevationMeters":"4200","minElevationMeters":"4200","northernmostLatitude":"-2.76667","southernmostLatitude":"-2.76667","westernmostLongitude":"-79.23333"}},"locationName":"Continent>South America>Ecuador","mappable":"Y","paleoData":[{"NOAADataTableId":"8039","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/ecuador/pallcacocha_grayscale.txt","linkText":"pallcacocha_grayscale.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"electromagnetic property>reflectance>grayscale"}]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/ecuador/pallcacocha_grayscale.xls","linkText":"pallcacocha_grayscale.xls","urlDescription":"Data","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>lake level"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/ecuador/readme_rodbell1999.txt","linkText":"readme_rodbell1999.txt","urlDescription":"Readme","variables":[]}],"dataTableName":"LAGUNAPA gray scale","dataTableNotes":null,"earliestYear":15090,"earliestYearBP":15090,"earliestYearCE":-13140,"mostRecentYear":-26,"mostRecentYearBP":-26,"mostRecentYearCE":1976,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Laguna Pallcacocha"}],"studyCode":null,"studyName":"Laguna Pallcacocha, Ecuador 15KYr Sediment Gray Scale Data","studyNotes":"Ecuador Alluvial Sediment Gray Scale Data, used as long term El Nino proxy. Light-colored laminae of inorganic clastic sediments are indicitive of El Nino-driven heavy precipitation events.","version":"1.0","xmlId":"663"}