{"NOAAStudyId":"17379","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":"2014-10-31","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-17379.xml","doi":null,"earliestYearBP":60600,"earliestYearCE":-58650,"entryId":"noaa-lake-17379","funding":[],"investigators":"Costa, K.; Russell, J.M.; Vogel, H.; Bijaksana, S.","mostRecentYearBP":650,"mostRecentYearCE":1300,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/17379","originalSource":null,"publication":[{"abstract":null,"author":{"name":"James M. Russell, Hendrik Vogel, Bronwen L. Konecky, Satria Bijaksana, Yongsong Huang, Martin Melles, Nigel Wattrus, Kassandra Costa, and John W. King"},"citation":"James M. Russell, Hendrik Vogel, Bronwen L. Konecky, Satria Bijaksana, Yongsong Huang, Martin Melles, Nigel Wattrus, Kassandra Costa, and John W. King. 2014. Glacial forcing of central Indonesian hydroclimate since 60,000 y B.P. Proceedings of the National Academy of Sciences. . doi: 10.1073/pnas.1402373111","edition":null,"identifier":{"id":"10.1073/pnas.1402373111","type":"doi","url":"http://dx.doi.org/10.1073/pnas.1402373111"},"issue":null,"journal":"Proceedings of the National Academy of Sciences","pages":null,"pubRank":"2","pubYear":2014,"reportNumber":null,"title":"Glacial forcing of central Indonesian hydroclimate since 60,000 y B.P.","type":"publication","volume":null},{"abstract":"The Indo-Pacific Warm Pool (IPWP) is an important driver of global climate, but its response to and involvement in paleoclimate change is poorly constrained. We generated a new record of sediment geochemistry from Lake Towuti (2.5S, 121.5E), Indonesia, located in the heart of the IPWP, to investigate changes in hydrological connectivity with upstream lakes and the extent of lake mixing and oxygenation during paleoclimate changes over the last 60,000 years BP (60 ka). Lake Towuti is located at the downstream end of the Malili Lakes, a chain of large, ancient, and biologically diverse tectonic lakes occupying a geologically heterogeneous terrain in central Sulawesi, Indonesia. Major and trace element data from river and lake sediments suggest no changes in sediment provenance during the Last Glacial Maximum (LGM), indicating that some of the Malili Lakes remained hydrologically open despite a regionally drier climate. However, samples from the LGM are uniformly less enriched in trace elements than samples from the Holocene and Marine Isotope Stage 3 (MIS3), which suggests a decrease in weathering intensity during the LGM, likely in response to decreased precipitation and temperature. Changes in Fe and other redox-sensitive trace element concentrations indicate changes in water column oxygenation, with the highest oxygen availability occurring during the LGM (15-35 ka) likely due to more frequent and/or deeper mixing of Lake Towuti's water column. The glacial-interglacial trend in lake oxygenation corresponds with changes in regional precipitation and associated changes in the seasonal cycle. The high degree of faunal endemism in these lakes may be related to changes in the lake geochemistry associated with glacial-interglacial environmental variability driven by changing inputs and redox variability.","author":{"name":"K.M. Costa, J.M. Russell, H. Vogel, S. Bijaksana"},"citation":"K.M. Costa, J.M. Russell, H. Vogel, S. Bijaksana. 2014. Hydrological connectivity and mixing of Lake Towuti, Indonesia in response to paleoclimatic changes over the last 60,000 years. Palaeogeography, Palaeoclimatology, Palaeoecology. . doi: 10.1016/j.palaeo.2014.10.009","edition":null,"identifier":{"id":"10.1016/j.palaeo.2014.10.009","type":"doi","url":"http://dx.doi.org/10.1016/j.palaeo.2014.10.009"},"issue":null,"journal":"Palaeogeography, Palaeoclimatology, Palaeoecology","pages":null,"pubRank":"1","pubYear":2014,"reportNumber":null,"title":"Hydrological connectivity and mixing of Lake Towuti, Indonesia in response to paleoclimatic changes over the last 60,000 years","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"55827","geo":{"geoType":"Feature","geometry":{"coordinates":["-2.732836","121.515956"],"type":"POINT"},"properties":{"easternmostLongitude":"121.515956","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"-2.732836","southernmostLatitude":"-2.732836","westernmostLongitude":"121.515956"}},"locationName":"Ocean>Indian Ocean>Indonesia","mappable":"Y","paleoData":[{"NOAADataTableId":"27654","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/towuti2014ions.txt","linkText":"Figure 3 Major Ion Concentrations","urlDescription":"Text Data File","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear 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":"percent","cvWhat":"chemical composition>element or single-element molecule>aluminum"},{"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>magnesium"},{"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>potassium"},{"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>titanium"}]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/towuti2014.xls","linkText":"Elements and Major Ions Data","urlDescription":"Excel Data File","variables":[]}],"dataTableName":"Towuti2014ions","dataTableNotes":null,"earliestYear":60600,"earliestYearBP":60600,"earliestYearCE":-58650,"mostRecentYear":700,"mostRecentYearBP":700,"mostRecentYearCE":1250,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"27655","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/towuti2014xrf.txt","linkText":"Figure 4 Redox-sensitive Elements Data","urlDescription":"Text Data File","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":"x-ray fluorescence spectroscopy","cvSeasonality":null,"cvShortName":null,"cvUnit":"weight percent","cvWhat":"chemical composition>element or single-element molecule>iron"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":"x-ray fluorescence spectroscopy","cvSeasonality":null,"cvShortName":null,"cvUnit":"weight percent","cvWhat":"chemical composition>element or single-element molecule>chromium"}]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/towuti2014.xls","linkText":"Elements and Major Ions Data","urlDescription":"Excel Data File","variables":[]}],"dataTableName":"Towuti2014XRF","dataTableNotes":null,"earliestYear":60280,"earliestYearBP":60280,"earliestYearCE":-58330,"mostRecentYear":650,"mostRecentYearBP":650,"mostRecentYearCE":1300,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Lake Towuti"}],"studyCode":null,"studyName":"Lake Towuti, Indonesia 60KYr Geochemical Data","studyNotes":"Major and trace element data are reported from river sediments and from sediment core TOW9 in Lake Towuti.\n","version":"1.0","xmlId":"15062"}