{"NOAAStudyId":"23212","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":"2017-12-07","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-23212.xml","doi":null,"earliestYearBP":15897,"earliestYearCE":-13947,"entryId":"noaa-cave-23212","funding":[{"fundingAgency":"Swiss National Science Foundation","fundingGrant":"STALCLIM (CRSI22_132646/1), P2EZP2_172213"},{"fundingAgency":"Deutsche Forschungsgemeinschaft","fundingGrant":"MA4759/8-1, RE3994-1/1"},{"fundingAgency":"National Science Foundation of China ","fundingGrant":"4123054, 2013CB955902"},{"fundingAgency":"US National Science Foundation","fundingGrant":"1103402"}],"investigators":"Lechleitner, F.A.; Breitenbach, S.F.M.; Cheng, H.; Plessen, B.; Rehfeld, K.; Goswami, BH.; Marwan, N.; Eroglu, D.; Adkins, J.F.; Haug, G.H.","mostRecentYearBP":6510,"mostRecentYearCE":-4560,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/23212","originalSource":null,"publication":[{"abstract":"Northeastern (NE) India experiences extraordinarily pronounced seasonal climate, governed by the Indian summer monsoon (ISM). The vulnerability of this region to floods and droughts calls for detailed and highly resolved paleoclimate reconstructions to assess the recurrence rate and driving factors of ISM changes. We use stable oxygen and carbon isotope ratios (d18O and d13C) from stalagmite MAW-6 from Mawmluh Cave to infer climate and environmental conditions in NE India over the last deglaciation (16-6ka). We interpret stalagmite d18O as reflecting ISM strength, whereas d13C appears to be driven by local hydroclimate conditions. Pronounced shifts in ISM strength over the deglaciation are apparent from the d18O record, similarly to other records from monsoonal Asia. The ISM is weaker during the late glacial (LG) period and the Younger Dryas, and stronger during the Bolling-Allerød and Holocene. Local conditions inferred from the d13C record appear to have changed less substantially over time, possibly related to the masking effect of changing precipitation seasonality. Time series analysis of the d18O record reveals more chaotic conditions during the late glacial and higher predictability during the Holocene, likely related to the strengthening of the seasonal recurrence of the ISM with the onset of the Holocene.","author":{"name":"Franziska A. Lechleitner, Sebastian F.M. Breitenbach, Hai Cheng, Birgit Plessen, Kira Rehfeld, Bedartha Goswami, Norbert Marwan, Deniz Eroglu, Jess Adkins, and Gerald Haug"},"citation":"Franziska A. Lechleitner, Sebastian F.M. Breitenbach, Hai Cheng, Birgit Plessen, Kira Rehfeld, Bedartha Goswami, Norbert Marwan, Deniz Eroglu, Jess Adkins, and Gerald Haug. 2017. Climatic and in-cave influences on d18O and d13C in a stalagmite from northeastern India through the last deglaciation. Quaternary Research, 88(3), 458-471. doi: 10.1017/qua.2017.72","edition":null,"identifier":{"id":"10.1017/qua.2017.72","type":"doi","url":"http://dx.doi.org/10.1017/qua.2017.72"},"issue":"3","journal":"Quaternary Research","pages":"458-471","pubRank":"1","pubYear":2017,"reportNumber":null,"title":"Climatic and in-cave influences on d18O and d13C in a stalagmite from northeastern India through the last deglaciation","type":"publication","volume":"88"}],"reconstruction":"N","scienceKeywords":["Monsoon"],"site":[{"NOAASiteId":"53045","geo":{"geoType":"Feature","geometry":{"coordinates":["25.2622","91.8167"],"type":"POINT"},"properties":{"easternmostLongitude":"91.8167","maxElevationMeters":"1290","minElevationMeters":"1290","northernmostLatitude":"25.2622","southernmostLatitude":"25.2622","westernmostLongitude":"91.8167"}},"locationName":"Continent>Asia>Southcentral Asia>India","mappable":"Y","paleoData":[{"NOAADataTableId":"34676","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/asia/india/mawmluh2017.txt","linkText":"Mawmluh Cave Stable Isotope Data","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":null,"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":"original d18O","cvDataType":"SPELEOTHEMS","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"original d18O","cvDataType":"SPELEOTHEMS","cvDetail":"raw","cvError":"95% confidence interval lower bound","cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"original d18O","cvDataType":"SPELEOTHEMS","cvDetail":"raw","cvError":"95% confidence interval upper bound","cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"Corrected for ice volume changes","cvDataType":"SPELEOTHEMS","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"Corrected for ice volume changes","cvDataType":"SPELEOTHEMS","cvDetail":"corrected","cvError":"95% confidence interval lower bound","cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":"Corrected for ice volume changes","cvDataType":"SPELEOTHEMS","cvDetail":"corrected","cvError":"95% confidence interval upper bound","cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","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>calcite","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":"raw","cvError":"95% confidence interval lower bound","cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":"raw","cvError":"95% confidence interval upper bound","cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate>calcite","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"}]}],"dataTableName":"Mawmluh2017MAW-6","dataTableNotes":null,"earliestYear":15897,"earliestYearBP":15897,"earliestYearCE":-13947,"mostRecentYear":6510,"mostRecentYearBP":6510,"mostRecentYearCE":-4560,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Mawmluh Cave"}],"studyCode":null,"studyName":"Mawmluh Cave, India 16-6 KYrBP Speleothem Stable Isotope Data","studyNotes":"Stalagmite stable isotope (d18O, d13C) data for reconstruction of Indian Summer Monsoon strength and local hydrology at Mawmluh Cave, NE India, over the last deglaciation.","version":"1.0","xmlId":"21415"}