# Tianmen Cave, Tibetan Plateau Holocene Stalagmite Oxygen Isotope Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 4.0 # Encoding: UTF-8 # NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), # and date accessed when using these downloaded data. If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. # # NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/13625 # Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata. # # Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-cave-13625.json # Study_Level_JSON_Description: JSON metadata of this file's parent study, which includes all study metadata. # # Data_Type: Speleothems # # Dataset_DOI: 10.25921/neqb-7x31 # # Science_Keywords: Monsoon #-------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/speleothem/asia/china/tianmen2012-1000yr.txt # Data_Download_Description: NOAA Template File; Oxygen Isotope Data for 0.6-0.9 kyr BP # # Original_Source_URL: # Original_Source_Description: # #-------------------- # Contribution_Date # Date: 2012-12-18 #-------------------- # File_Last_Modified_Date # Date: 2022-10-07 #-------------------- # Title # Study_Name: Tianmen Cave, Tibetan Plateau Holocene Stalagmite Oxygen Isotope Data #-------------------- # Investigators # Investigators: Cai, Y.(https://orcid.org/0000-0001-7063-5050); Zhang, H.(https://orcid.org/0000-0002-0855-1283); Cheng, H.(https://orcid.org/0000-0002-5305-9458); An, Z.; Edwards, R.L.(https://orcid.org/0000-0002-7027-5881); Wang, X.(https://orcid.org/0000-0002-8614-5627); Tan, L.(https://orcid.org/0000-0003-1932-7102); Liang, F.; Wang, J.; Kelly, M.J. #-------------------- # Description_Notes_and_Keywords # Description: High resolution (3 to 7 years) stalagmite oxygen isotope record from Tianmen Cave, Tibetan Plateau providing a monsoon record for the mid-Holocene (8.7 to 4.3 ka BP). #-------------------- # Publication # Authors: Yanjun Cai, Haiwei Zhang, Hai Cheng, Zhisheng An, R. Lawrence Edwards, Xianfeng Wang, Liangcheng Tan, Fuyuan Liang, Jin Wang, Megan Kelly # Journal_Name: Earth and Planetary Science Letters # Published_Title: The Holocene Indian monsoon variability over the southern Tibetan Plateau and its teleconnections # Published_Date_or_Year: 2012 # Volume: 335-336 # Pages: 135-144 # Issue: # Report_Number: # DOI: 10.1016/j.epsl.2012.04.035 # Full_Citation: # Abstract: A high-resolution stalagmite oxygen isotope record from Tianmen Cave, located in the south central Tibetan Plateau, characterizes detailed climatic variations between 8.7 and 4.3 ka BP on centennial and decadal time scales, with a temporal resolution of 3 to 7 years. The Tianmen record is in good agreement with speleothem records from Asian monsoon regions (i.e., Dongge Cave, Dykoski et al., 2005 and Wang et al., 2005; Qunf Cave, Fleitmann et al., 2003), upwelling records from the Arabian Sea (Gupta et al., 2003 and Gupta et al., 2005) and peat bog records from southeast Tibetan Plateau (Hong et al., 2003), indicating that the Indian summer monsoon (ISM) gradually weakened as Northern Hemisphere summer insolation declined during the early-mid Holocene and that ISM intensity, rather than temperature, dominates the precipitation d18O on centennial to decadal time scales in the southern TP. On centennial to decadal time scales, the detrended Tianmen record correlates well with the Greenland ice core record, further confirming the mechanistic connection between the ISM and high northern latitude temperature changes. Meanwhile, the Tianmen record bears significant solar activity cycles, suggesting that the solar output changes may affect the variability of the ISM and likely the position of the Intertropical Convergence Zone (ITCZ) as well. Moreover, due to joint effects of changes in monsoon precipitation, moisture source and temperature, the Tianmen d18O record shows much larger amplitude changes than speleothem d18O records from low-elevation Asian Monsoon regions, which is similar to the previously reported Marine Isotope Stage (MIS) 5 record (Cai et al., 2010), suggesting heightened sensitivity of precipitation isotope composition to climate changes over the high-elevation regions and further demonstrating that the stable isotope lapse rate may change under different climatic conditions. #-------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant_Number: EAR-0908792 #-------------------- # Funding_Agency # Funding_Agency_Name: Chinese Academy of Sciences West Light Foundation # Grant_Number: #-------------------- # Funding_Agency # Funding_Agency_Name: Gary Comer Science and Education Foundation # Grant_Number: CC8 #-------------------- # Funding_Agency # Funding_Agency_Name: Chinese Academy of Sciences # Grant_Number: Knowledge Innovation Program (KZCX2-EW-QN109) #-------------------- # Site_Information # Site_Name: Tianmen Cave # Location: China # Northernmost_Latitude: 30.9167 # Southernmost_Latitude: 30.9167 # Easternmost_Longitude: 90.0667 # Westernmost_Longitude: 90.0667 # Elevation: 4800 #-------------------- # Data_Collection # Collection_Name: TM-18-2012-1000yr # First_Year: 950 # Last_Year: 610 # Time_Unit: cal yr BP # Core_Length: .0051 # Parameter_Keywords: oxygen isotopes # Notes: #-------------------- # Chronology_Information # Chronology: Uranium-Thorium # Chronology_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/templates/noaa-wds-paleo-uth-terms.csv # Chronology_Download_Description: Uranium-Thorium terms and definitions. # Chronology_Notes: The chemical procedures were similar to those described in Edwards et al. (1987) and accomplished in the clean lab of Minnesota Isotope Laboratory. The measurements were run on inductively coupled plasma mass spectrometers, Finnigan ELEMENT and Thermo Finnigan Neptune, using procedures described in Shen et al. (2002) and Cheng et al., 2009a, Cheng et al., 2009b respectively. # 238U_Decay_Constant: # 234U_Decay_Constant: # 230Th_Decay_Constant: # Initial_230Th/232Th: 4.4 +/- 2.2 ppm # Initial_230Th/232Th_Method: Assumed values for a material at secular equilibrium with the bulk earth 232Th/238U value of 3.8. The errors are arbitrarily assumed to be 50%. # Missing_Values: na # Chronology_Table: #samp_id notes depth_mm 238U_ppb 238U_2s_ppb 232Th_ppt 232Th_2s_ppt d234U_meas_permil d234U_meas_2s_permil 230Th_238U_act 230Th_238U_act_2s 230Th_232Th_atom_ppm 230Th_232Th_atom_2s_ppm age_uncorr_BM age_uncorr_2s_yr age_corr_BM age_corr_2s_yr d234U_init_permil d234U_init_2s_permil age_corr_BP1950 age_corr_2s_yr #TM18b-5 run on Thermo Finnigan Neptune 2 232.5 0.3 4235 85 444 3 0.0153 0.0003 14 0 1162 24 795 261 445 3 740 260 #TM18b-1 run on Finnigan ELEMENT 4.5 430 0.9 11126 44 447 4 0.0197 0.0014 13 1 1493 106 972 282 448 4 910 280 #TM18b-2 run on Finnigan ELEMENT 11.5 524.3 1.1 198 7 165 3 1.0796 0.0042 47231 1678 243216 4411 243208 4410 327 8 243100 4400 #TM18b-3 run on Finnigan ELEMENT 43.5 514.2 1.1 502 7 147 3 1.0657 0.0038 17996 254 248570 4299 248548 4298 296 7 248500 4300 #TM18b-4 run on Finnigan ELEMENT 126.5 672 1.3 225 7 67 3 1.0822 0.0035 53350 1768 493336 41144 493328 41141 271 39 493300 41100 #------------------ # Variables # # PaST_Thesaurus_Download_Resource: https://www.ncdc.noaa.gov/paleo/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # variables format: shortname what,material,error,units,seasonality,data_type,detail,method, C(har) or N(umeric) data,additional information # ## depth_mm depth,,,millimeter,,speleothems,,,N, ## age_calBP age,,,calendar year before present,,speleothems,,,N, ## d18OcarbVPDB delta 18O,calcium carbonate,,per mil VPDB,,speleothems,raw,isotope ratio mass spectrometry,N, #-------------------- # Data: # Missing_Values: NA depth_mm age_calBP d18OcarbVPDB 0.1 610.8 -14.047 0.2 617.6 -14.568 0.3 624.4 -15.085 0.4 631.2 -15.688 0.5 638 -15.876 0.6 644.8 -15.672 0.7 651.6 -14.89 0.8 658.4 -14.726 0.9 665.2 -15.007 1 672 -15.217 1.1 678.8 -15.206 1.2 685.6 -15.556 1.3 692.4 -15.672 1.4 699.2 -15.595 1.5 706 -15.586 1.6 712.8 -15.62 1.7 719.6 -15.675 1.8 726.4 -15.295 1.9 733.2 -15.305 2 740 -15.248 2.1 746.8 -15.395 2.2 753.6 -15.626 2.3 760.4 -16.038 2.4 767.2 -16.397 2.5 774 -16.451 2.6 780.8 -16.647 2.7 787.6 -16.529 2.8 794.4 -16.522 2.9 801.2 -16.477 3 808 -16.414 3.1 814.8 -16.014 3.2 821.6 -15.994 3.3 828.4 -15.834 3.4 835.2 -15.728 3.5 842 -15.801 3.6 848.8 -15.88 3.7 855.6 -15.836 3.8 862.4 -15.923 3.9 869.2 -15.993 4 876 -16.288 4.1 882.8 -16.226 4.2 889.6 -16.162 4.3 896.4 -16.212 4.4 903.2 -16.14 4.5 910 -17.015 4.6 916.8 -16.782 4.7 923.6 -17.101 4.8 930.4 -16.835 4.9 937.2 -16.011 5 944 -15.09 5.1 950.8 -14.432 5.1 950.8 -14.432