Mawmluh Cave, India 16-6 KYrBP Speleothem Stable Isotope Data 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. 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. Monsoon earth science/paleoclimate/speleothems (depth,null,null,millimeter,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (delta 13C,calcite,95% confidence interval lower bound,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems (delta 18O,calcite,95% confidence interval lower bound,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,original d18O) earth science/paleoclimate/speleothems (delta 18O,calcite,95% confidence interval lower bound,per mil VPDB,null,speleothems,corrected,isotope ratio mass spectrometry,N,Corrected for ice volume changes) earth science/paleoclimate/speleothems (delta 13C,calcite,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems (age,null,null,calendar year before present,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (delta 13C,calcite,95% confidence interval upper bound,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems (delta 18O,calcite,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,original d18O) earth science/paleoclimate/speleothems (delta 18O,calcite,95% confidence interval upper bound,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,original d18O) earth science/paleoclimate/speleothems (delta 18O,calcite,null,per mil VPDB,null,speleothems,corrected,isotope ratio mass spectrometry,N,Corrected for ice volume changes) earth science/paleoclimate/speleothems (delta 18O,calcite,95% confidence interval upper bound,per mil VPDB,null,speleothems,corrected,isotope ratio mass spectrometry,N,Corrected for ice volume changes) earth science/paleoclimate/speleothems earth science/paleoclimate/speleothems (Mawmluh Cave>LATITUDE 25.2622>LONGITUDE 91.8167) 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. STUDY NOTES: 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. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Lechleitner, F.A. Investigator : Breitenbach, S.F.M. Investigator : Cheng, H. Investigator : Plessen, B. Investigator : Rehfeld, K. Investigator : Goswami, BH. Investigator : Marwan, N. Investigator : Eroglu, D. Investigator : Adkins, J.F. Investigator : Haug, G.H. 2017-12-07 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/23212 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/india/mawmluh2017.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/india/mawmluh2017.txt English https://www.ncdc.noaa.gov/paleo/study/23212 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/india/mawmluh2017.txt Franziska A. Lechleitner, Sebastian F.M. Breitenbach, Hai Cheng, Birgit Plessen, Kira Rehfeld, Bedartha Goswami, Norbert Marwan, Deniz Eroglu, Jess Adkins, and Gerald Haug2017Climatic and in-cave influences on d18O and d13C in a stalagmite from northeastern India through the last deglaciationQuaternary Research883458-47110.1017/qua.2017.72https://www.cambridge.org/core/journals/quaternary-research/article/climatic-and-incave-influences-on-18o-and-13c-in-a-stalagmite-from-northeastern-india-through-the-last-deglaciation/48CC429FE2174B261AF342A2F6171F89 START YEAR: 15897 cal yr BP * END YEAR: 6510 cal yr BP 91.8167 25.2622 91.8167 25.2622