# Lake Towuti, Indonesia 60KYr Multiproxy Sediment Data #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # 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: http://hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:::::P1_STUDY_ID:16236 # # Original_Source_URL: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleolimnology/pacific/towuti2014d13c-wax.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleolimnology #-------------------- # Contribution_Date # Date: 2014-03-29 #-------------------- # Title # Study_Name: Lake Towuti, Indonesia 60KYr Multiproxy Sediment Data #-------------------- # Investigators # Investigators: Russell, J.M.; Vogel, H.; Konecky, B.L.; Bijaksana, S.; Huang, Y.; Melles, M.; Wattrus, N.; Costa, K.; King, J.W. #-------------------- # Description_and_Notes # Description: High-resolution sedimentary Ti concentrations measured by core-scanning X-ray Fluorescence (XRF) and flux-fusion ICP-AES, # and carbon isotopic compositions of terrestrial leaf wax (C-28 alkanoic acid). Analyses conducted on core IDLE-TOW10-9B-1K #-------------------- # Publication # Authors: James M. Russell, Hendrik Vogel, Bronwen L. Konecky, Satria Bijaksana, Yongsong Huang, Martin Melles, Nigel Wattrus, Kassandra Costa, and John W. King # Published_Date_or_Year: 2014-03-24 # Published_Title: Glacial forcing of central Indonesian hydroclimate since 60,000 y B.P. # Journal_Name: Proceedings of the National Academy of Sciences of the United States of America # Volume: # Edition: # Issue: # Pages: # DOI: 10.1073/pnas.1402373111 # Online_Resource: http://www.pnas.org/content/early/2014/03/20/1402373111.abstract # Full_Citation: # Abstract: The Indo-Pacific warm pool houses the largest zone of deep atmospheric convection on Earth and plays a critical role in global climate variations. Despite the region's importance, changes in Indo-Pacific hydroclimate on orbital timescales remain poorly constrained. Here we present high-resolution geochemical records of surface runoff and vegetation from sediment cores from Lake Towuti, on the island of Sulawesi in central Indonesia, that continuously span the past 60,000 y. We show that wet conditions and rainforest ecosystems on Sulawesi present during marine isotope stage 3 (MIS3) and the Holocene were interrupted by severe drying between ~33,000 and 16,000 y B.P. when Northern Hemisphere ice sheets expanded and global temperatures cooled. Our record reveals little direct influence of precessional orbital forcing on regional climate, and the similarity between MIS3 and Holocene climates observed in Lake Towuti suggests that exposure of the Sunda Shelf has a weaker influence on regional hydroclimate and terrestrial ecosystems than suggested previously. We infer that hydrological variability in this part of Indonesia varies strongly in response to high-latitude climate forcing, likely through reorganizations of the monsoons and the position of the intertropical convergence zone. These findings suggest an important role for the tropical western Pacific in amplifying glacial-interglacial climate variability. #------------------ # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: P2C2 program #------------------ # Site_Information # Site_Name: Lake Towuti # Location: Ocean>Indian Ocean>Indonesia # Country: Indonesia # Northernmost_Latitude: -2.73283645213 # Southernmost_Latitude: -2.73283645213 # Easternmost_Longitude: 121.515955597 # Westernmost_Longitude: 121.515955597 # Elevation: m #------------------ # Data_Collection # Collection_Name: Towuti2014d13Cwax # Earliest_Year: 60336 # Most_Recent_Year: 630 # Time_Unit: Cal. Year BP # Core_Length: m # Notes: #------------------ # Chronology: # # Accession number Depth (cm) 14C age Error Reservoir Correction (14C years) Reservoir corrected 14C age Calibrated Age 1-sigma error Material # OS-86810 17.7 1500 25 570 930 852 57 Org C # OS-86811 41.5 2820 25 670 2150 2204 92 Org C # OS-86812 79.5 4210 30 750 3460 3756 68 Org C # OS-86854 114.5 6520 35 790 5730 6512 51 Org C # OS-82282 161.65 7530 35 830 6700 7553 39 Org C # OS-86858 204.5 8840 40 860 7980 8879 103 Org C # OS-82279 231 10000 50 na 9180 10294 53 Macrofossil # OS-86853 253 12350 45 890 11460 13327 54 Org C # OS-86834 301 14400 65 910 13490 16683 122 Org C # OS-89970 341 14500 70 na 14500 17689 169 Macrofossil # OS-86833 381 17700 90 940 16760 19980 142 Org C # OS-86832 413 18550 70 950 17600 21093 183 Org C # OS-86856 453 20400 80 960 19440 23224 236 Org C # OS-86835 481 21700 150 960 20740 24722 202 Org C # OS-86861 523 23700 220 970 22730 27415 399 Org C # OS-86855 569 25900 240 980 24920 29842 318 Org C # OS-86836 639 29300 230 1000 28300 32583 414 Org C # OS-89973 675 28400 180 1000 27400 31487 151 Org C # OS-92843 713 30400 140 na 30400 34887 129 Macrofossil # OS-86949 745 36600 360 1020 35580 40821 397 Org C # OS-86950 785 37600 420 1020 36580 41594 319 Org C # OS-86951 865 39400 340 1030 38370 42753 280 Org C # OS-86972 895 42100 620 1040 41060 44755 450 Org C # # Accession Number Material Depth (cm) 14C age 14C age error Reservoir (14C years) Reservoir error (pooled) #  --- 210Pb age 10 165 11 na na # OS-62262 Organic carbon 10 675 30 510 32 # OS-82279 Plant/Wood 231 9180 45 na na # OS-82283 Organic carbon 231 10000 50 820 67 # OS-89970 Plant/Wood 341 14500 70 na na # OS-89971 Organic carbon 341 15500 65 1000 95 # OS-92843 Plant/Wood 713 30400 140 na na # OS-86836 Organic carbon 713 31300 230 900 270 # # #---------------- # Variables # # Data variables follow (have no #) # 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) # ## depth_cm depth, , , cm, , , , ,N ## age_calBP age, , , calendar years before present, , , , ,N ## d13CleafwaxC28 delta13C, leaf wax C-28 acids, , per mil PDB, , , , ,N #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: depth_cm age_calBP d13CleafwaxC28 1.2 630 -37.63757143 5 743 -38.17096429 9 864 -37.70903571 25 1382 -37.22017857 29 1520 -36.12528061 41 1949 -37.66708929 46 2135 -37.05860714 50 2287 -35.72305357 58 2598 -35.66091071 62 2759 -35.13528571 65.5 2901 -35.11146429 69.5 3080 -37.00992857 73.5 3232 -35.68628571 77 3380 -35.1491199 81.5 3573 -35.75257143 85 3725 -37.10780357 89 3901 -37.65569643 93 4078 -37.46926786 95.5 4191 -36.80019643 100 4395 -36.77373023 105.5 4647 -35.79866071 108.5 4787 -36.35570238 113.5 5021 -37.29267857 117.5 5211 -37.00526786 125.5 5596 -37.63601786 128.5 5742 -37.06482143 136.5 6136 -36.92344643 140.5 6335 -37.13317857 144.5 6536 -37.64275 148.5 6738 -36.35535714 152.5 6942 -37.20775 156.5 7147 -37.3186639 164.5 7561 -37.96071429 172 7954 -38.05082143 176 8165 -38.58576786 179.5 8351 -39.05858992 188 8805 -39.10828571 192 9021 -39.09067857 196 9237 -39.234125 204.5 9700 -39.67792857 208 9892 -38.82708929 212 10112 -34.69251786 216.5 10360 -36.1855 220.5 10582 -37.36776786 229 11057 -37.28128571 233 11278 -36.62567857 237 11502 -36.03325 240.5 11699 -34.55942857 245 11954 -35.07107143 257 12631 -33.76969643 261 12858 -33.57304943 265 13086 -33.16276786 269 13313 -32.15035714 273 13625 -32.05403571 277 13742 -34.85408929 281 13998 -34.43514286 285 14227 -32.74733546 289 14456 -32.87017857 293 14685 -31.46989286 297 14915 -30.78994643 305 15374 -28.90235714 309 15603 -29.81988903 313 15833 -29.997625 317 16062 -29.37671429 329 16751 -23.76935714 333 16980 -26.40317857 350 17953 -24.59016071 357 18353 -24.56478571 361 18581 -25.19630325 375 19377 -27.39055952 391 20282 -24.54407143 399 20732 -24.92314286 407 21181 -24.41667857 415 21627 -25.38817857 423 22072 -24.29964286 431 22515 -24.480375 439 22956 -23.48660714 452 23668 -23.24049554 465 24373 -23.77557143 473 24804 -23.72533929 497 26083 -25.69630357 505 26504 -23.77971429 529 27752 -25.38965816 537 28163 -26.19655357 545 28571 -29.38810714 553 28977 -25.38196429 561 29380 -24.43066071 569 29780 -26.38522619 577 30179 -25.69423214 586 30624 -27.3985 593 30968 -25.72478571 601 31359 -27.47514286 617 32135 -29.88214286 625 32520 -30.77441071 648 33616 -34.02189286 664 34370 -31.06130357 672 34745 -33.383375 689 35538 -30.75264222 697 35910 -31.62214286 713 36651 -32.84117857 720 36974 -33.561 728 37344 -35.08453571 736 37714 -38.18132143 744 38083 -41.02280357 752 38442 -40.63389286 760 38824 -39.92158036 768 39195 -38.94619643 776 39567 -39.81671429 792 40371 -38.24977105 800 40811 -41.31539286 816 41691 -37.80225 824 42131 -39.30377679 832 42571 -40.86287819 856 43891 -40.05596429 864 44331 -36.48223214 872 44771 -34.76187372 880 45211 -37.04980357 896 46091 -38.29317857 904 46543 -38.68153444 912 46971 -39.26985714 920 47411 -39.321125 928 47851 -37.76858929 936 48291 -38.13016454 952 49171 -36.45996429 960 49611 -37.41023214 968 50051 -39.41382143 976 50491 -34.32086905 984 50931 -35.71683929 1000 51811 -35.37764286 1007 52196 -37.77117857 1023 53076 -35.14305357 1039 53956 -35.00108673 1055 54836 -35.98508929 1063 55276 -35.91673214 1071 55716 -36.01978571 1079 56156 -38.96017857 1087 56596 -36.52314286 1103 57476 -36.09731633 1111 57920 -31.75523214 1120 58411 -32.54548214 1128 58851 -32.53926786 1136 59291 -30.40294069 1143 59676 -33.91780357 1152 60171 -33.27358929 1155 60336 -32.64905357