{"NOAAStudyId":"13177","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":"2012-08-01","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-13177.xml","doi":null,"earliestYearBP":1336,"earliestYearCE":614,"entryId":"noaa-lake-13177","funding":[{"fundingAgency":"US NOAA","fundingGrant":"NA09OAR4310107"},{"fundingAgency":"National Geographic Society","fundingGrant":null}],"investigators":"Rodysill, J.R.; Russell, J.M.; Bijaksana, S.; Brown, E.T.; Safiuddin, L.O.; Eggermont, H.","mostRecentYearBP":-59,"mostRecentYearCE":2009,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/13177","originalSource":null,"publication":[{"abstract":"Variations in the location and strength of convection in the Western \r\nPacific Warm Pool (WPWP) have a profound impact on the distribution \r\nand amount of global rainfall. Much of the variability in WPWP \r\nconvection is attributed to variations in the El Niño-Southern \r\nOscillation, for which the long-term trends and forcing mechanisms \r\nremain poorly understood. Despite the importance of WPWP convection \r\nto global climate change, we have very few paleohydrological \r\nreconstructions from the region. Here we present a new paleolimnologic \r\nand paleohydrologic record spanning the past 1,400 years using a multi-\r\nproxy dataset from Lake Logung, located in East Java, Indonesia that \r\nprovides insights into centennial-scale trends in warm pool hydrology. \r\nOrganic matter d13C data indicate that East Java became wetter over \r\nthe last millennium until ca. 1800 Common Era (CE), consistent with \r\nevidence for the southward migration of the Intertropical Convergence \r\nZone (ITCZ) during this time. Superimposed on this long-term trend \r\nare four decade- to century-scale droughts, inferred from organic \r\nmatter d13C and calcite abundance data. They are centered at 1030, \r\n1550, 1830, and 1996 CE. The three more recent droughts correlate \r\nwith hydrologic anomalies documented in other proxy records from \r\nthe WPWP region on both sides of the equator, and the two most recent \r\ndroughts correlate in time with historically documented periods of \r\nmultiple, intense El Niño events. Thus, our record provides strong \r\nevidence that century-scale hydrologic variability in this region \r\nrelates to changes in the Walker Circulation. Human activity within \r\nthe lake catchment is apparent since 1860 CE. \r\n","author":null,"citation":"Rodysill, J.R., J.M. Russell, S. Bijaksana, E.T. Brown, \r\nL.O. Safiuddin, and H. Eggermont. 2012. \r\nA paleolimnological record of rainfall and drought \r\nfrom East Java, Indonesia during the last 1,400 years. \r\nJournal of Paleolimnology, Vol. 47, No. 1, pp. 125-139. \r\nDOI: 10.1007/s10933-011-9564-3 ","edition":null,"identifier":{"id":"10.1007/s10933-011-9564-3","type":"doi","url":"http://dx.doi.org/10.1007/s10933-011-9564-3"},"issue":null,"journal":"Journal of Paleolimnology","pages":null,"pubRank":"1","pubYear":2012,"reportNumber":null,"title":"A paleolimnological record of rainfall and drought  from East Java, Indonesia during the last 1,400 years","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":["ENSO","Warm Pool"],"site":[{"NOAASiteId":"53249","geo":{"geoType":"Feature","geometry":{"coordinates":["-8.0418","113.3075"],"type":"POINT"},"properties":{"easternmostLongitude":"113.3075","maxElevationMeters":"215","minElevationMeters":"215","northernmostLatitude":"-8.0418","southernmostLatitude":"-8.0418","westernmostLongitude":"113.3075"}},"locationName":"Ocean>Indian Ocean>Indonesia","mappable":"Y","paleoData":[{"NOAADataTableId":"22653","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties","earth science>paleoclimate>paleolimnology>geochemistry","earth science>paleoclimate>paleolimnology>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/logung2012.txt","linkText":"logung2012.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>bulk biological material>organic matter","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"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":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":"magnetic susceptibility measurement with point or surface sensor","cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless (SI system)","cvWhat":"magnetic property>magnetic moments>magnetic susceptibility>volume magnetic susceptibility"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":"carbon coulometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"chemical composition>element or single-element molecule>carbon>inorganic carbon"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"chemical composition>element or single-element molecule>carbon>organic carbon"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":"elemental analysis","cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"chemical composition>element or single-element molecule>nitrogen"},{"cvAdditionalInfo":"total organic carbon/total nitrogen","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>element or compound ratio>carbon/nitrogen"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>bulk biological material>organic matter","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil","cvWhat":"chemical composition>isotope>isotope ratio>delta 15N"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":"energy-dispersive x-ray fluorescence spectroscopy","cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"chemical composition>compound>inorganic compound>silicon dioxide>biogenic silica"}]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>geochemistry","earth science>paleoclimate>paleolimnology>physical properties","earth science>paleoclimate>paleolimnology>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/logung2012.xls","linkText":"logung2012.xls","urlDescription":"Data","variables":[]}],"dataTableName":"Logung2012","dataTableNotes":null,"earliestYear":614,"earliestYearBP":1336,"earliestYearCE":614,"mostRecentYear":2009,"mostRecentYearBP":-59,"mostRecentYearCE":2009,"species":[],"timeUnit":"AD"}],"siteName":"Lake Logung"}],"studyCode":null,"studyName":"Lake Logung, Indonesia 1400 Year Multiproxy Sediment Data","studyNotes":"Multiproxy sediment data from Lake Logung, Indonesia, for the past 1400 years. \nPaleoenvironmental proxies measured include Magnetic Susceptibility, Organic \nand Inorganic Carbon , Total N, C:N ratio, C and N isotopes, and Biogenic Opal. \n\nLake Logung, Indonesia: 8°2.509'S, 113°18.452'E, 215m elevation, 7m water depth. ","version":"1.0","xmlId":"11219"}