# Shenqi Cave, Southeastern Tibetan Plateau 2300 Year Speleothem d18O Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/24710 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shenqi2018sq1-sq7.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Speleothems # # Dataset DOI: # # Parameter_Keywords: oxygen isotopes #-------------------- # Contribution_Date # Date: 2018-07-24 #-------------------- # File_Last_Modified_Date # Date: 2018-07-24 #-------------------- # Title # Study_Name: Shenqi Cave, Southeastern Tibetan Plateau 2300 Year Speleothem d18O Data #-------------------- # Investigators # Investigators: Tan, L.; Cai, Y.; Cheng, H.; Edwards, R.L.; Lan, J.; Zhang, H.; Li, D.; Ma, L.; Zhao, P.; Gao, Y. #-------------------- # Description_Notes_and_Keywords # Description: Speleothem oxygen isotope (d18O) records from Shenqi Cave, southeastern Tibetan Plateau over the past 2300 years, plus # reconstructed precipitation index (PI) for southwest China. Data are from stalagmites SQ1 and SQ7, and a combined SQ1-SQ7 record is also provided. # Provided Keywords: Speleothem, oxygen isotope, precipitation index, Shenqi cave, paleoclimate #-------------------- # Publication # Authors: Liangcheng Tan, Yanjun Cai, Hai Cheng, R. Lawrence Edwards, Jianghu Lan, Haiwei Zhang, Dong Li, Le Ma, Peipei Zhao, Yongli Gao # Published_Date_or_Year: 2018-09-01 # Published_Title: High resolution monsoon precipitation changes on southeastern Tibetan Plateau over the past 2300 years. # Journal_Name: Quaternary Science Reviews # Volume: 195 # Edition: # Issue: # Pages: 122-132 # Report_Number: # DOI: 10.1016/j.quascirev.2018.07.021 # Online_Resource: https://www.sciencedirect.com/science/article/pii/S0277379118302920 # Full_Citation: # Abstract: Climate changes on Southeastern Tibetan Plateau have important impacts on social and economic development, as well as the ecosystem of southwestern China and Indo-China Peninsula. Here, we collected two stalagmites from Shenqi (Miraculous) cave in southern Sichuan, China. The stalagmite d18O record shows good coherence with local instrumental rainfall record, as well as tree ring- and pollen-based moisture reconstructions from southeastern Tibetan Plateau during overlapped time periods. As a result, we reconstructed high-resolution (~4.9 yrs) monsoon precipitation variations on southeastern Tibetan Plateau over the past 2300 years by using the combined stalagmite d18O record. The result reveals an overall decreasing precipitation trend, with two most notable wet periods occurred in 60-280 AD and 370-510 AD. The most remarkably dry period is the recent 200 years. Some decadal scale wet and dry intervals were also identified. The abnormal drought during 1160-1245 AD might have accelerated Dali kingdom's demise at 1253 AD. Power spectrum analysis indicated significant 373-, 187-, 22-, 12- and 11- yr cycles in our stalagmite record, suggesting the impact of solar activity. Increased monsoon precipitation on southeastern TP was observed in solar activity minima during the last millennium. We further synthesized an integrated precipitation record for southwestern China and discussed spatial patterns of precipitation over China during the last two millennia. The comparisons confirm a "dry southern and wet northern" pattern in monsoonal China during the Medieval Warm Period and a "wet southern and dry northern" pattern during the Little Ice Age and Dark Age Cold Period. Solar activity, the strength of westerly jet and summer monsoon, as well as the SST of tropical Indo-Pacific might play important roles on the rainfall spatial patterns over monsoonal China during the last 2000 years. #------------------ # Funding_Agency # Funding_Agency_Name: Shaanxi Science Fund for Distinguished Young Scholars # Grant: 2018JC-023 #------------------ # Funding_Agency # Funding_Agency_Name: National Key Research and Development Program of China # Grant: 2017YFA0603401 #------------------ # Funding_Agency # Funding_Agency_Name: Youth Innovation Promotion Association of Chinese Academy of Sciences # Grant: 2012295 #------------------ # Funding_Agency # Funding_Agency_Name: Belt & Road project of IEECAS # Grant: #------------------ # Site_Information # Site_Name: Shenqi Cave # Location: Asia>Eastern Asia>China # Country: China # Northernmost_Latitude: 28.93 # Southernmost_Latitude: 28.93 # Easternmost_Longitude: 103.1 # Westernmost_Longitude: 103.1 # Elevation: 1407 m #------------------ # Data_Collection # Collection_Name: Shenqi2018SQ1-SQ7 # Earliest_Year: -317 # Most_Recent_Year: 2010 # Time_Unit: CE # Core_Length: # Notes: #------------------ # Chronology_Information # Chronology: # # Depth Sample 238U 232Th 230Th / 232Th d234U* 230Th / 238U 230Th Age (yr) 230Th Age (yr) d234UInitial** 230Th Age (yr BP)*** # mm Number (ppb) (ppt) (atomic x10-6) (measured) (activity) (uncorrected) (corrected) (corrected) (corrected ) # 0.6 SQ1-1 3185.2 +/- 13.5 421 +/- 9 88 +/- 3 -178.6 +/- 3.3 0.0007 +/- 0.0000 94 +/- 3 89 +/- 4 -179 +/- 3 29 +/- 4 # 0.9 SQ1-1B 4400.5 +/- 25.7 541 +/- 12 118 +/- 6 -180.3 +/- 4.0 0.0009 +/- 0.0000 117 +/- 5 112 +/- 6 -180 +/- 4 51 +/- 6 # 2.9 SQ1-2A 4370.6 +/- 15.1 274 +/- 8 452 +/- 24 -183.6 +/- 2.4 0.0017 +/- 0.0001 230 +/- 10 227 +/- 10 -184 +/- 2 166 +/- 10 # 4.8 SQ1-2 3318.8 +/- 8.7 140 +/- 3 1051 +/- 29 -183.7 +/- 1.8 0.0027 +/- 0.0000 360 +/- 5 358 +/- 5 -184 +/- 2 298 +/- 5 # 6.5 SQ1-3A 5084.3 +/- 21.6 89 +/- 8 3282 +/- 310 -188.7 +/- 2.6 0.0035 +/- 0.0001 468 +/- 14 467 +/- 14 -189 +/- 3 406 +/- 14 # 8 SQ1-3 3744.8 +/- 10.1 53 +/- 2 4815 +/- 202 -191.1 +/- 1.8 0.0041 +/- 0.0000 557 +/- 5 556 +/- 5 -191 +/- 2 496 +/- 5 # 11.3 SQ1-1b 4685.9 +/- 12.9 213 +/- 5 2501 +/- 54 -194.1 +/- 2.2 0.0069 +/- 0.0000 938 +/- 5 936 +/- 5 -195 +/- 2 875 +/- 5 # 17.1 SQ1-5A 4731.0 +/- 16.5 140 +/- 6 4489 +/- 206 -202.4 +/- 2.3 0.0081 +/- 0.0001 1111 +/- 13 1110 +/- 13 -203 +/- 2 1049 +/- 13 # 19.3 SQ1-6A 5155.2 +/- 19.4 878 +/- 18 884 +/- 19 -206.2 +/- 2.3 0.0091 +/- 0.0001 1262 +/- 9 1256 +/- 10 -207 +/- 2 1195 +/- 10 # 22.1 SQ1-7A 5272.8 +/- 17.4 919 +/- 19 986 +/- 21 -203.2 +/- 2.1 0.0104 +/- 0.0001 1436 +/- 11 1430 +/- 12 -204 +/- 2 1369 +/- 12 # 24.7 SQ1-6 4622.9 +/- 75.9 1872 +/- 38 474 +/- 10 -206.7 +/- 10.6 0.0116 +/- 0.0002 1614 +/- 35 1599 +/- 36 -208 +/- 11 1539 +/- 36 # 27.9 SQ1-8A 5761.7 +/- 20.0 115 +/- 4 10369 +/- 381 -210.9 +/- 2.1 0.0125 +/- 0.0001 1742 +/- 12 1741 +/- 12 -212 +/- 2 1680 +/- 12 # 30.1 SQ1-9A 5777.2 +/- 14.5 395 +/- 9 3251 +/- 72 -212.1 +/- 1.8 0.0135 +/- 0.0001 1883 +/- 11 1881 +/- 11 -213 +/- 2 1820 +/- 11 # 32.8 SQ1-10A 6120.5 +/- 17.3 864 +/- 18 1696 +/- 36 -212.2 +/- 2.1 0.0145 +/- 0.0001 2031 +/- 13 2026 +/- 13 -213 +/- 2 1965 +/- 13 # 35.5 SQ1-11A 5938.6 +/- 17.8 215 +/- 6 6973 +/- 183 -216.4 +/- 2.3 0.0153 +/- 0.0001 2158 +/- 13 2157 +/- 13 -218 +/- 2 2096 +/- 13 # 39.5 SQ1-8 5836.7 +/- 22.7 144 +/- 3 11041 +/- 263 -213.8 +/- 2.1 0.0166 +/- 0.0001 2324 +/- 14 2323 +/- 14 -215 +/- 2 2263 +/- 14 # 39.8 SQ1-9 4281.9 +/- 12.6 521 +/- 11 2868 +/- 59 -220.3 +/- 1.6 0.0212 +/- 0.0001 3005 +/- 15 3000 +/- 15 -222 +/- 2 2940 +/- 15 # 40.3 SQ1-10 8188.7 +/- 38.7 910 +/- 19 3690 +/- 78 -209.2 +/- 2.2 0.0249 +/- 0.0002 3488 +/- 26 3484 +/- 26 -211 +/- 2 3424 +/- 26 # 42.7 SQ1-12A 10608.1 +/- 28.9 415 +/- 9 10848 +/- 237 -234.4 +/- 1.6 0.0257 +/- 0.0001 3734 +/- 17 3733 +/- 17 -237 +/- 2 3672 +/- 17 # 44.3 SQ1-11 7520.4 +/- 23.4 141 +/- 4 23247 +/- 603 -237.8 +/- 1.6 0.0264 +/- 0.0001 3852 +/- 19 3851 +/- 19 -240 +/- 2 3791 +/- 19 # 3 SQ7-1a 3716 +/- 10 230 +/- 5 49 +/- 6 -167.8 +/- 1.4 0.0002 +/- 0.0000 24 +/- 3 22 +/- 3 -168 +/- 1 -42 +/- 3 # 5 SQ7-2a 4507 +/- 12 69 +/- 3 255 +/- 33 -168.6 +/- 1.3 0.0002 +/- 0.0000 31 +/- 4 30 +/- 4 -169 +/- 1 -34 +/- 4 # 13 SQ7-3a 2974 +/- 7 117 +/- 3 271 +/- 19 -171.0 +/- 1.2 0.0006 +/- 0.0000 85 +/- 6 84 +/- 6 -171 +/- 1 20 +/- 6 # 21 SQ7-4a 4811 +/- 14 321 +/- 7 263 +/- 9 -169.7 +/- 1.3 0.0011 +/- 0.0000 140 +/- 4 138 +/- 4 -170 +/- 1 74 +/- 4 # 27 SQ7-2 3948 +/- 14 1107 +/- 22 103 +/- 3 -169.0 +/- 1.6 0.0018 +/- 0.0000 231 +/- 5 221 +/- 8 -169 +/- 2 157 +/- 8 # 42 SQ7-5a 3448 +/- 7 203 +/- 5 571 +/- 19 -172.0 +/- 1.1 0.0020 +/- 0.0000 269 +/- 6 267 +/- 6 -172 +/- 1 203 +/- 6 # 60 SQ7-6a 3849 +/- 9 676 +/- 14 246 +/- 7 -172.8 +/- 1.2 0.0026 +/- 0.0000 346 +/- 6 340 +/- 7 -173 +/- 1 276 +/- 7 # 83 SQ7-7a 3577 +/- 9 171 +/- 4 1300 +/- 33 -180.1 +/- 1.2 0.0038 +/- 0.0000 502 +/- 6 500 +/- 6 -180 +/- 1 436 +/- 6 # 91 SQ7-4 4510 +/- 16 589 +/- 12 641 +/- 14 -182.6 +/- 1.5 0.0051 +/- 0.0000 680 +/- 6 676 +/- 7 -183 +/- 2 612 +/- 7 # 121 SQ7-8a 6237 +/- 20 405 +/- 8 1464 +/- 32 -186.1 +/- 1.4 0.0058 +/- 0.0000 775 +/- 5 773 +/- 5 -187 +/- 1 709 +/- 5 # 143 SQ7-5 8678 +/- 41 511 +/- 11 1780 +/- 38 -188.6 +/- 1.7 0.0064 +/- 0.0000 858 +/- 5 856 +/- 5 -189 +/- 2 792 +/- 5 # 161 SQ7-9a 7326 +/- 24 461 +/- 10 1763 +/- 39 -189.1 +/- 1.4 0.0067 +/- 0.0000 909 +/- 7 907 +/- 7 -190 +/- 1 843 +/- 7 # 183 SQ7-6 6422 +/- 28 550 +/- 11 1421 +/- 30 -191.9 +/- 1.7 0.0074 +/- 0.0000 1001 +/- 6 998 +/- 6 -192 +/- 2 934 +/- 6 # 203 SQ7-10a 4367 +/- 12 270 +/- 6 2372 +/- 53 -200.0 +/- 1.3 0.0089 +/- 0.0001 1221 +/- 9 1219 +/- 9 -201 +/- 1 1155 +/- 9 # 210 SQ7-7 3986 +/- 14 212 +/- 5 2957 +/- 69 -202.0 +/- 1.6 0.0096 +/- 0.0001 1313 +/- 9 1312 +/- 9 -203 +/- 2 1248 +/- 9 # # # *d234U + ([234U/238U]activity - 1)x1000. # **d234Uinitial was calculated based on 230Th age (T), i.e., d234Uinitial = d234Umeasured x elambda234xT. # # Corrected 230Th ages assume the initial 230Th/232Th atomic ratio of 4.4 +/-2.2x 10-6. # Those are the 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%. # # ***B.P. stands for "Before Present" where the "Present" is defined as the year 1950 A.D. # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ## age_CE age, , , CE, , , , ,N, ## d18O delta 18O, calcium carbonate, , per mil VPDB, ,speleothems, ,isotope ratio mass spectrometry,N, # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # Combined SQ Record age_CE d18O 2010 -8.09 2006 -8.396 1998 -8.413 1995 -8.127 1992 -8.464 1990 -8.53 1988 -8.672 1986 -8.538 1983 -8.853 1981 -8.668 1978 -9.076 1975 -8.943 1972 -9.071 1969 -8.828 1965 -8.816 1962 -8.396 1958 -8.5 1955 -8.418 1951 -8.735 1947 -8.587 1944 -8.348 1940 -8.539 1937 -8.668 1933 -8.467 1930 -9.204 1924 -9.162 1918 -9.313 1912 -9.305 1906 -8.423 1903 -8.42 1899 -8.545 1896 -8.454 1893 -8.62 1889 -8.76 1885 -9.279 1881 -8.837 1877 -8.886 1871 -8.8 1865 -8.81 1857 -8.763 1849 -8.982 1840 -8.906 1832 -8.762 1823 -8.766 1815 -8.882 1808 -8.792 1801 -9.225 1796 -8.9 1793 -9.048 1790 -9.281 1788 -9.01 1785 -9.027 1783 -8.85 1781 -8.839 1779 -8.761 1778 -8.744 1776 -8.728 1774 -9.033 1773 -8.61 1771 -8.774 1770 -8.832 1769 -9.111 1768 -9.285 1766 -9.204 1765 -9.046 1763 -9.444 1761 -9.038 1758 -9.152 1756 -9.277 1754 -8.789 1751 -8.48 1748 -8.778 1744 -8.967 1741 -9.086 1737 -8.912 1734 -8.842 1730 -9.039 1726 -9.214 1723 -8.863 1719 -8.83 1715 -8.888 1711 -8.999 1707 -9.507 1702 -9.139 1698 -9.387 1694 -9.31 1689 -8.979 1684 -9.324 1679 -9.542 1675 -9.083 1669 -9.112 1665 -9.21 1660 -9.106 1655 -9.109 1649 -9.339 1644 -9.368 1639 -9.171 1634 -9.372 1628 -9.112 1622 -9.109 1616 -9.095 1610 -9.216 1603 -8.936 1596 -9.094 1589 -8.852 1585 -9.005 1581 -8.492 1577 -8.693 1573 -9.208 1569 -8.663 1564 -8.628 1560 -8.706 1555 -8.708 1551 -8.855 1546 -9.063 1541 -9.244 1536 -9.133 1531 -9.161 1525 -9.342 1520 -9.333 1514 -8.686 1507 -8.766 1498 -8.873 1488 -8.922 1476 -9.205 1463 -8.984 1450 -9.023 1436 -9.164 1421 -9.526 1407 -9.259 1394 -8.905 1381 -9.242 1369 -8.976 1359 -8.75 1350 -8.479 1343 -8.615 1339 -9.533 1335 -8.971 1332 -9.357 1326 -9.408 1321 -8.862 1316 -8.716 1311 -8.917 1307 -9.536 1303 -8.969 1299 -9.179 1295 -8.82 1292 -9.668 1289 -8.964 1286 -9.713 1283 -9.736 1281 -9.556 1278 -9.823 1276 -9.407 1274 -9.99 1272 -9.871 1270 -9.614 1267 -9.368 1265 -9.292 1263 -9.098 1261 -9.169 1259 -9.106 1256 -9.299 1254 -9.262 1251 -9.237 1248 -8.865 1245 -8.761 1241 -8.793 1238 -8.721 1234 -8.632 1231 -8.759 1227 -8.657 1223 -8.601 1219 -8.531 1215 -8.551 1211 -9.109 1207 -8.619 1203 -8.515 1199 -8.664 1195 -8.824 1191 -8.797 1187 -8.718 1183 -8.943 1180 -8.786 1176 -8.739 1172 -8.719 1169 -9.041 1165 -8.874 1162 -8.75 1158 -9.136 1155 -9.069 1152 -9.016 1149 -9.346 1146 -9.208 1144 -9.281 1141 -9.195 1138 -9.247 1136 -9.485 1133 -9.338 1130 -9.282 1128 -9.37 1125 -9.403 1122 -9.232 1119 -9.255 1116 -9.228 1113 -9.296 1110 -9.283 1107 -9.22 1104 -9.23 1100 -9.078 1097 -9.116 1094 -9.033 1091 -9.1 1087 -9.294 1084 -9.484 1080 -8.903 1077 -8.923 1073 -9.097 1069 -8.974 1065 -9.012 1061 -9.035 1057 -8.937 1053 -8.958 1048 -8.905 1043 -8.984 1038 -8.646 1033 -8.783 1028 -8.99 1022 -8.969 1016 -8.9 1010 -9.03 1002 -9.204 998 -9.226 994 -9.255 990 -9.207 986 -9.455 981 -9.467 976 -9.4 971 -9.39 966 -9.269 955 -9.166 950 -9.422 944 -9.255 939 -9.081 933 -9.439 927 -9.22 921 -9.127 915 -9.111 909 -9.135 903 -9.19 896 -9.112 890 -9.05 884 -8.91 877 -9.259 871 -8.988 865 -9.08 858 -9.229 852 -9.212 845 -8.982 839 -8.776 833 -8.763 826 -8.822 820 -8.953 814 -8.67 807 -8.825 801 -8.659 795 -8.566 789 -8.817 783 -8.757 776 -8.792 770 -9.186 763 -8.719 757 -8.896 750 -8.881 744 -8.829 737 -8.864 736 -8.768 730 -9.023 723 -9.12 717 -9.304 711 -9.263 705 -9.564 698 -9.125 692 -8.76 686 -8.892 680 -8.982 674 -8.938 668 -8.827 661 -8.859 655 -8.94 649 -8.764 643 -8.947 637 -9.15 631 -9.441 625 -8.755 618 -8.983 612 -9.055 606 -9.08 600 -9.124 594 -8.944 587 -8.941 581 -9.01 575 -9.408 568 -9.11 562 -8.953 555 -8.864 548 -9.052 541 -9.186 534 -9.241 527 -9.285 520 -9.176 513 -8.864 506 -9.452 499 -9.479 492 -9.396 485 -9.532 478 -8.988 471 -9.512 464 -9.673 458 -9.213 451 -9.346 445 -9.404 439 -9.261 433 -9.485 427 -9.333 421 -9.522 416 -9.323 411 -9.256 406 -9.224 401 -9.142 396 -9.475 392 -9.173 387 -9.435 383 -9.393 378 -9.835 374 -9.347 370 -9.163 365 -8.868 361 -9.103 357 -9.236 353 -9.07 349 -8.884 345 -8.92 341 -8.821 336 -8.986 332 -9.033 328 -9.306 324 -9.195 320 -9.247 316 -8.856 311 -8.924 307 -8.591 303 -8.807 298 -8.897 294 -9.073 289 -9.195 284 -9.306 279 -9.05 274 -9.471 269 -9.654 264 -9.327 259 -9.527 253 -9.102 247 -9.855 241 -9.465 234 -9.806 228 -9.556 222 -9.866 215 -9.906 208 -9.627 201 -9.668 195 -9.641 188 -9.562 181 -9.882 174 -9.782 168 -9.348 161 -9.706 155 -9.506 148 -9.571 142 -9.385 136 -9.218 119 -9.591 113 -9.615 107 -9.344 102 -9.308 96 -9.957 91 -9.554 85 -9.355 80 -9.479 74 -9.417 69 -9.478 63 -9.653 58 -9.243 53 -9.063 47 -9.161 42 -8.576 37 -8.919 31 -8.794 26 -9.218 21 -8.828 16 -8.704 11 -8.72 6 -8.758 1 -8.788 -5 -8.708 -10 -9.024 -15 -8.945 -20 -9.137 -25 -9.364 -30 -9.161 -35 -9.375 -40 -9.263 -45 -9.226 -50 -9.015 -55 -8.967 -60 -9.008 -65 -9.162 -70 -9.174 -75 -8.755 -80 -8.818 -84 -9.075 -89 -8.882 -94 -9.317 -99 -9.119 -104 -9.052 -109 -9.149 -113 -9.253 -118 -9.398 -123 -9.817 -127 -9.884 -132 -9.71 -137 -9.825 -141 -9.683 -146 -9.599 -150 -9.336 -154 -9.328 -159 -9.153 -163 -9.162 -168 -9.478 -172 -9.618 -177 -9.313 -181 -9.074 -185 -8.927 -190 -9.078 -194 -8.855 -199 -8.81 -203 -9.152 -207 -8.855 -211 -9.428 -216 -9.2 -220 -9.161 -224 -9.44 -229 -8.972 -233 -9.011 -237 -9.025 -241 -8.939 -245 -8.969 -250 -8.883 -254 -8.994 -258 -9.328 -262 -8.939 -266 -8.972 -270 -9.562 -274 -9.024 -278 -9.051 -282 -9.376 -286 -9.415 -290 -9.272 -294 -9.215 -298 -9.066 -302 -8.983 -306 -8.911 -310 -8.748 -314 -8.553 -317 -8.462