{"NOAAStudyId":"22990","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":"2017-11-02","dataPublisher":"NOAA","dataType":"SPELEOTHEMS","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/speleothem","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-cave-22990.xml","doi":null,"earliestYearBP":39971,"earliestYearCE":-38021,"entryId":"noaa-cave-22990","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"AGS-1103413, AGS-1502917, AGS-1602455"}],"investigators":"Denniston, R.F.; Asmerom, Y.; Polyak, V.J.; Wanamaker, A.D.; Ummenhofer, C.C.; Humphreys, W.F.; Cugley, J.; Woods, D.; Lucker, S.","mostRecentYearBP":304,"mostRecentYearCE":1646,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/22990","originalSource":null,"publication":[{"abstract":"Recent studies of stalagmites from the Southern Hemisphere tropics of Indonesia reveal two shifts in monsoon activity not apparent in records from the Northern Hemisphere sectors of the Austral-Asian monsoon system: an interval of enhanced rainfall at ~19 ka, immediately prior to Heinrich Stadial 1, and a sharp increase in precipitation at ~9 ka. Determining whether these events are site-specific or regional is important for understanding the full range of sensitivities of the Austral-Asian monsoon. We present a discontinuous 40 kyr carbon isotope record of stalagmites from two caves in the Kimberley region of the north-central Australian tropics. Heinrich stadials are represented by pronounced negative carbon isotopic anomalies, indicative of enhanced rainfall associated with a southward shift of the intertropical convergence zone and consistent with hydroclimatic changes observed across Asia and the Indo-Pacific. Between 20 and 8 ka, however, the Kimberley stalagmites, like the Indonesian record, reveal decoupling of monsoon behavior from Southeast Asia, including the early deglacial wet period (which we term the Late Glacial Pluvial) and the abrupt strengthening of early Holocene monsoon rainfall.","author":{"name":"R.F. Denniston, Y. Asmerom, V.J. Polyak, A.D. Wanamaker Jr., C.C. Ummenhofer, W.F. Humphreys, J. Cugley, D. Woods, S. Lucker"},"citation":"R.F. Denniston, Y. Asmerom, V.J. Polyak, A.D. Wanamaker Jr., C.C. Ummenhofer, W.F. Humphreys, J. Cugley, D. Woods, S. Lucker. 2017. Decoupling of monsoon activity across the northern and southern Indo-Pacific during the Late Glacial. Quaternary Science Reviews, 176, 101-105. doi: 10.1016/j.quascirev.2017.09.014","edition":null,"identifier":{"id":"10.1016/j.quascirev.2017.09.014","type":"doi","url":"http://dx.doi.org/10.1016/j.quascirev.2017.09.014"},"issue":null,"journal":"Quaternary Science Reviews","pages":"101-105","pubRank":"1","pubYear":2017,"reportNumber":null,"title":"Decoupling of monsoon activity across the northern and southern Indo-Pacific during the Late Glacial","type":"publication","volume":"176"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"55109","geo":{"geoType":"Feature","geometry":{"coordinates":["-17.333333","124.083333"],"type":"POINT"},"properties":{"easternmostLongitude":"124.083333","maxElevationMeters":"100","minElevationMeters":"100","northernmostLatitude":"-17.333333","southernmostLatitude":"-17.333333","westernmostLongitude":"124.083333"}},"locationName":"Continent>Australia/New Zealand>Australia>Western Australia","mappable":"Y","paleoData":[{"NOAADataTableId":"34194","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>carbon isotopes","earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/australia/ballgown2017iso.txt","linkText":"Ball Gown Cave Stable Isotope Data","urlDescription":"Formatted Text Data File","variables":[{"cvAdditionalInfo":"stalagmite name","cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Character","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"sampling metadata>sample identification"},{"cvAdditionalInfo":"distance from base","cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"millimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","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":"SPELEOTHEMS","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"}]}],"dataTableName":"BGC2017iso","dataTableNotes":null,"earliestYear":39971,"earliestYearBP":39971,"earliestYearCE":-38021,"mostRecentYear":8367,"mostRecentYearBP":8367,"mostRecentYearCE":-6417,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Ball Gown Cave"},{"NOAASiteId":"56499","geo":{"geoType":"Feature","geometry":{"coordinates":["-15.18","128.37"],"type":"POINT"},"properties":{"easternmostLongitude":"128.37","maxElevationMeters":"100","minElevationMeters":"100","northernmostLatitude":"-15.18","southernmostLatitude":"-15.18","westernmostLongitude":"128.37"}},"locationName":"Continent>Australia/New Zealand>Australia>Western Australia","mappable":"Y","paleoData":[{"NOAADataTableId":"34195","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes","earth science>paleoclimate>speleothems>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/australia/kni-51-2017iso.txt","linkText":"Cave KNI-51 Stable Isotope Data","urlDescription":"Formatted Text Data File","variables":[{"cvAdditionalInfo":"stalagmite name","cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Character","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"sampling metadata>sample identification"},{"cvAdditionalInfo":"distance from base","cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"millimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","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":"SPELEOTHEMS","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"}]}],"dataTableName":"KNI-51-2017iso","dataTableNotes":null,"earliestYear":20877,"earliestYearBP":20877,"earliestYearCE":-18927,"mostRecentYear":304,"mostRecentYearBP":304,"mostRecentYearCE":1646,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Cave KNI-51"}],"studyCode":null,"studyName":"Western Australia 40,000 Year Stalagmite Stable Isotope Data","studyNotes":"Stable isotope (d18O and d13C) data from stalagmites collected in 2 caves (Ball Gown Cave and Cave KNI-51) in tropical Western Australia for the past 40,000 years.  Kimberley composite stalagmite record utilized in Denniston et al. 2017 Late Glacial through Holocene paleomonsoon reconstruction.","version":"1.0","xmlId":"21155"}