# Towuti and Matano Lake (Indonesia) n-alkane data over the past 30 kiloyears #----------------------------------------------------------------------- # 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 downloaded data. # If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. # # Description/Documentation lines begin with '#' followed by a space # Data lines have no '#' # # NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/39564 # 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-recon-39564.json # Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata. # # Data_Type: Climate Reconstructions # # Dataset_DOI: # # Science_Keywords: Last Glacial Maximum, Tropics, Warm Pool, sea level, Monsoon, Other Hydroclimate Reconstruction, Other Reconstruction #--------------------------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/parish2024/parish2024-idle-mat10-2b.txt # Data_Download_Description: NOAA Template File; IDLE-MAT10-2B n-alkane Data # #--------------------------------------- # Contribution_Date # Date: 2024-06-12 #--------------------------------------- # File_Last_Modified_Date # Date: 2024-06-17 #--------------------------------------- # Title # Study_Name: Towuti and Matano Lake (Indonesia) n-alkane data over the past 30 kiloyears #--------------------------------------- # Investigators # Investigators: Parish, Meredith (https://orcid.org/https://orcid.org/0000-0001-7159-3358); Russell, James; Konecky, Bronwen; Du, Xiaojing; He, Chengfei; Bijaksana, Satria; Vogel, Hendrik #--------------------------------------- # Description_Notes_and_Keywords # Description: #--------------------------------------- # Publication # Authors: Meredith Parish, James Russell, Bronwen Konecky, Xiaojing Du, Chengfei He, Satria Bijaksana, and Hendrik Vogel # Published_Date_or_Year: 2024 # Published_Title: Changes in Indo-Pacific Warm Pool hydroclimate and vegetation during the last deglaciation # Journal_Name: Quaternary Science Reviews # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: # Abstract: Drying across much of the Indo-Pacific Warm Pool (IPWP) during the Last Glacial Maximum (LGM) has been widely recognized from interpretations of sedimentological, geochemical, and paleoecological records. Reconstructions of precipitation isotopic compositions have emerged as a powerful tool to reconstruct rainfall amount in many tropical regions, yet it has proven difficult to reconcile precipitation isotope records from the IPWP with records of widespread drying. To evaluate the signals preserved in precipitation isotope records, we produced new hydrogen and carbon isotope records from Lake Towuti and Lake Matano in Sulawesi, Indonesia using long-chain n-alkanes. We then compared these new records to existing n-alkanoic acid records from the same lakes and compiled available marine runoff, salinity, leaf wax hydrogen isotope (d2Hwax), and leaf wax carbon isotope (d13Cwax) records in the IPWP. During the last deglaciation, marine runoff and salinity proxies reveal that precipitation amount began to increase dramatically between ~12.3 ka and the end of the Younger Dryas. A principal component analysis of precipitation isotope records indicates a shift from more 2H-enriched to 2H-depleted waxes at ~12.3 ka as sea level rise inundates most of the Sunda and Sahul shelves, coincident with runoff and salinity proxies, suggesting precipitation isotopes respond strongly to rainfall amount in this region. Over 70% of IPWP d13Cwax records show a transition from more to less 13C-enriched waxes beginning about 19.9 ka, prior to the reconstructed increases in precipitation. We suggest that vegetation shifted in response to the changing seasonality of precipitation. The dramatic changes in the IPWP during the last deglaciation highlight the capacity for the region to experience dynamic changes in precipitation, vegetation, and atmospheric circulation. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation # Grant: EAR-2102856 #--------------------------------------- # Site_Information # Site_Name: Lake Matano, Sulawesi # Location: Indonesia # Northernmost_Latitude: -2.5 # Southernmost_Latitude: -2.5 # Easternmost_Longitude: 121.3 # Westernmost_Longitude: 121.3 # Elevation_m: #--------------------------------------- # Data_Collection # Collection_Name: IDLE-MAT10-2B # First_Year: 30000 # Last_Year: 0 # Time_Unit: calendar year before present # Core_Length_m: # Parameter_Keywords: reconstruction, carbon isotopes # Notes: #--------------------------------------- # Chronology_Information # Chronology: # # LATITUDE: -2.50000 * LONGITUDE: 121.300000 # MINIMUM DEPTH, sediment/rock: 0.010 m * MAXIMUM DEPTH, sediment/rock: 7.7400 m # Event(s): # IDLE-MAT10-2B * LATITUDE: -2.500000 * LONGITUDE: 121.300000 * ELEVATION: 650.0 m * LOCATION: Lake Matano, Sulawesi, Indonesia * METHOD/DEVICE: Piston corer (PC) # Parameter(s): # Laboratory code/label (Lab label) * PI: Parish, Meredith (https://orcid.org/0000-0001-7159-3358, mereparish@gmail.com, https://mereparish.wixsite.com/meredithparish) # Age, dated [ka] (Age dated) * PI: Parish, Meredith (https://orcid.org/0000-0001-7159-3358, mereparish@gmail.com, https://mereparish.wixsite.com/meredithparish) # Age, error [±] (Age e) * PI: Parish, Meredith (https://orcid.org/0000-0001-7159-3358, mereparish@gmail.com, https://mereparish.wixsite.com/meredithparish) # DEPTH, sediment/rock [m] (Depth sed) * GEOCODE * PI: Parish, Meredith (https://orcid.org/0000-0001-7159-3358, mereparish@gmail.com, https://mereparish.wixsite.com/meredithparish) # rbacon calibration curve choice (cc) * PI: Parish, Meredith (https://orcid.org/0000-0001-7159-3358, mereparish@gmail.com, https://mereparish.wixsite.com/meredithparish) * COMMENT: 1 indicates that 'Intcal20' was used # Reservoir effect/correction [a] (Res effect) * PI: Parish, Meredith (https://orcid.org/0000-0001-7159-3358, mereparish@gmail.com, https://mereparish.wixsite.com/meredithparish) * COMMENT: Age offset dR # Reservoir effect/correction, standard deviation [±] (Res effect std dev) * PI: Parish, Meredith (https://orcid.org/0000-0001-7159-3358, mereparish@gmail.com, https://mereparish.wixsite.com/meredithparish) # License: # Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) # Status: # Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) # Size: # 77 data points # # Lab label Age dated [ka] Age e [±] Depth sed [cm] cc Res effect [a] Res effect std dev [±] # 2B-1-0 " -50" " 10" " 1" " 0" " 0" " 977.53" # 2B-1-107.5 " 4610" " 30" " 40" " 1" " 0" " 977.53" # 2B-1-109 " 3680" " 80" " 41" " 1" " 0" " 0" # 2B-2-51.5 " 10250" " 50" " 126" " 1" " 0" " 977.53" # 2B-3-1.5 " 15900" " 60" " 223" " 1" " 0" " 0" # 2B-3-5.5 " 17100" " 70" " 227" " 1" " 0" " 977.53" # 2B-3-94 " 21600" " 90" " 315" " 1" " 0" " 977.53" # 2B-4-47.5 " 28000" " 130" " 418" " 1" " 0" " 977.53" # 2B-5-23 " 33900" " 280" " 530" " 1" " 0" " 977.53" # 2B-6-54.5 " 42100" " 330" " 662" " 1" " 0" " 977.53" # 2B-7-16 " 46000" " 460" " 774" " 1" " 0" " 977.53" # #--------------------------------------- # Variables # PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data) # ## Core_ID sample identification,,,,,Paleolimnology,,,C, ## depth Depth,,,meter,,Paleolimnology,,,N,sediment depth ## min_age Age,,,calendar year before present,,Paleolimnology,,,N, ## age Age,,,calendar year before present,,Paleolimnology,,,N, ## max_age Age,,,calendar year before present,,Paleolimnology,,,N, ## area_C21_alk peak area integral,C21 n-alkane,,relative unit,,Paleolimnology,,gas chromatography - flame ionization detection,N, ## area_C23_alk peak area integral,C23 n-alkane,,relative unit,,Paleolimnology,,gas chromatography - flame ionization detection,N, ## area_C25_alk peak area integral,C25 n-alkane,,relative unit,,Paleolimnology,,gas chromatography - flame ionization detection,N, ## area_C27_alk peak area integral,C27 n-alkane,,relative unit,,Paleolimnology,,gas chromatography - flame ionization detection,N, ## area_C29_alk peak area integral,C29 n-alkane,,relative unit,,Paleolimnology,,gas chromatography - flame ionization detection,N, ## area_C31_alk peak area integral,C31 n-alkane,,relative unit,,Paleolimnology,,gas chromatography - flame ionization detection,N, ## area_C33_alk peak area integral,C33 n-alkane,,relative unit,,Paleolimnology,,gas chromatography - flame ionization detection,N, ## dD_C29_alk delta 2H,C29 n-alkane,,per mil VSMOW,,Paleolimnology,,isotope ratio mass spectrometry,N, ## stdev_C29_alk delta 2H,C29 n-alkane,one standard deviation,per mil VSMOW,,Paleolimnology,,isotope ratio mass spectrometry,N, ## dD.C31_alk delta 2H,C31 n-alkane,,per mil VSMOW,,Paleolimnology,,isotope ratio mass spectrometry,N, ## stdev_C31_alk delta 2H,C31 n-alkane,one standard deviation,per mil VSMOW,,Paleolimnology,,isotope ratio mass spectrometry,N, ## dD_C33_alk delta 2H,C33 n-alkane,,per mil VSMOW,,Paleolimnology,,isotope ratio mass spectrometry,N, ## stdev_C33_alk delta 2H,C33 n-alkane,one standard deviation,per mil VSMOW,,Paleolimnology,,isotope ratio mass spectrometry,N, ## d13C_C29_alk delta 13C,C29 n-alkane,,per mil VSMOW,,Paleolimnology,,isotope ratio mass spectrometry,N, ## stdev_C29_d13C delta 13C,C29 n-alkane,one standard deviation,per mil VSMOW,,Paleolimnology,,isotope ratio mass spectrometry,N, ## d13C_C31_alk delta 13C,C31 n-alkane,,per mil VSMOW,,Paleolimnology,,isotope ratio mass spectrometry,N, ## stdev_C31_d13C delta 13C,C31 n-alkane,one standard deviation,per mil VSMOW,,Paleolimnology,,isotope ratio mass spectrometry,N, ## d13C_C33_alk delta 13C,C33 n-alkane,,per mil VSMOW,,Paleolimnology,,isotope ratio mass spectrometry,N, ## stdev_C33_d13C delta 13C,C33 n-alkane,one standard deviation,per mil VSMOW,,Paleolimnology,,isotope ratio mass spectrometry,N, #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: NA Core_ID depth min_age age max_age area_C21_alk area_C23_alk area_C25_alk area_C27_alk area_C29_alk area_C31_alk area_C33_alk dD_C29_alk stdev_C29_alk dD.C31_alk stdev_C31_alk dD_C33_alk stdev_C33_alk d13C_C29_alk stdev_C29_d13C d13C_C31_alk stdev_C31_d13C d13C_C33_alk stdev_C33_d13C IDLE-MAT10-5A-1K-1_69-71 0.02 206 1921 3092 18.9409 36.7329 64.0898 94.5663 59.0687 78.7483 41.081 -187.001 1.1003 -184.516 0.535815 -190.446 5.961828 -32.9853 0.005737 -32.7613 0.050883 NA NA IDLE-MAT10-5A-1K 0.23 1875 3114 3783 34.1807 16.5764 19.5782 32.6091 32.4522 63.4756 47.2109 -186.764 4.965953 -178.882 1.025425 -173.977 0.999979 -33.9333 0.093749 -34.2671 0.038642 NA NA IDLE-MAT10-5A-1K 0.575 4267 5198 6678.5 5.1593 9.2838 18.0557 32.1765 82.6858 146.1043 105.469 NA NA -178.149 0.217124 -177.82 3.080962 NA NA NA NA NA NA IDLE-MAT10-5A-1K 0.72 4831 6357 7997 6.0795 9.1485 25.3623 27.3133 50.7718 90.2825 83.8106 -189.07 1.209348 -178.359 0.374589 -172.264 2.367931 -34.0467 0.085379 -35.3531 0.010686 NA NA IDLE-MAT10-5A-1K-2_4-7 0.8 5257 6934 8757 19.6537 16.1895 22.3092 36.8865 104.5259 222.8294 117.525 -188.442 4.146481 -179.688 0.971512 -176.366 2.62113 -33.6797 0.411845 -35.0636 0.202558 NA NA IDLE-MAT10-5A-1K-2_20-22 0.955 6743.5 8335 9540.5 32.2535 58.1089 67.5793 103.0262 169.6468 323.5347 160.6354 -195.196 2.168197 -178.954 0.194488 -177.283 0.44996 NA NA NA NA NA NA IDLE-MAT10-5A-1K 1.055 7633.5 8977 10026.5 10.097 12.5835 14.5581 18.5083 29.7682 52.248 43.7471 -177.153 4.965953 -178.013 0.401067 -209.854 2.95071 NA NA NA NA NA NA IDLE-MAT10-5A-1K 1.205 9028.5 10035.5 10510.5 7.8606 9.7279 16.4368 24.1099 25.215 52.1022 47.2865 NA NA -173.657 2.424258 -199.223 20.97022 -33.9359 0.042817 -34.1018 0.062013 -33.0472 0.382602 IDLE-MAT10-5A-1K-2_55-57 1.305 10403.5 10803.5 11529.5 17.4274 31.7428 51.4665 94.4956 156.6841 264.9544 195.7521 -171.585 1.477646 -171.114 0.813011 NA NA -31.7889 0.18126 -32.4563 0.083871 NA NA IDLE-MAT10-5A-1K-2_61.5-63.5 1.37 10610 11370 12669 48.2142 49.7654 78.1941 130.7111 146.5577 211.1859 122.6956 -174.56 3.50567 -171.735 2.774242 -170.606 7.003766 -30.501 0.088139 -29.973 0.049411 NA NA IDLE-MAT10-5A-1K-2_68-70 1.435 10908 11981.5 13803.5 21.7182 26.2749 53.7135 156.3221 212.212 357.3602 202.3304 NA NA -170.084 0.503735 -167.481 0.455283 NA NA NA NA NA NA IDLE-MAT10-5A-1K-2_78.5-80.5 1.54 11444 12984 15266 24.452 36.0849 60.6576 157.0132 201.31 322.8153 218.037 -188.58 5.928 -176.1 1.95026 -178.239 1.781048 NA NA NA NA NA NA IDLE-MAT10-5A-1K-2_101-103 1.765 13057.5 15156 17218.5 41.5445 38.4668 66.9689 99.9747 114.2814 182.6678 139.3703 -169.585 0.346508 -176.971 0.471435 -179.572 2.375955 NA NA NA NA NA NA IDLE-MAT10-5A-1K 1.865 14063.5 16123 17961.5 6.3035 7.3512 14.0097 23.9588 29.2845 49.7779 48.4006 -161.993 11.15571 -172.233 4.11411 -171.009 2.546288 NA NA NA NA NA NA IDLE-MAT10-5A-1K-2_125.5-127.25 2.0075 15814.75 17433.5 18668.75 35.4376 35.6308 59.1406 96.6666 152.5334 214.8091 151.6831 -166.818 1.163504 -174.071 0.854317 -175.384 1.617322 -29.1527 0.097661 -25.9508 0.134589 NA NA IDLE-MAT10-5A-1K 2.165 18103.5 18734.5 19193 3.6273 6.7913 12.7785 24.416 34.5373 58.8226 52.6133 -167.503 2.555192 -174.162 0.891941 -174.098 2.277257 NA NA NA NA NA NA IDLE-MAT10-5A-1K-3_2-4 2.205 18677.5 19048 19361.5 16.935 21.5752 36.1373 63.5693 95.3495 155.5191 116.9019 -158.874 13.963 -178.723 2.774242 -174.094 6.304024 NA NA NA NA NA NA IDLE-MAT10-5A-1K-3_14-16 2.36 19455 19940 20710 14.2918 19.3136 28.2668 50.1763 85.8084 138.1607 102.7465 -172.281 2.539493 -179.351 0.624436 -178.847 6.825957 NA NA NA NA NA NA IDLE-MAT10-5A-1K-3_28.5-30.5 2.505 19910 20824.5 22241 34.5394 45.9065 78.1596 108.4677 108.0905 183.4705 95.3767 -166.762 10.82263 -177.07 0.159986 -172.488 4.260779 -27.8266 0.219031 -24.8109 0.086143 NA NA IDLE-MAT10-5A-1K-3_39-41 2.61 20301 21474 22854 12.4234 23.2814 35.1045 62.729 103.7431 170.4713 128.6634 -173.498 6.11446 -181.351 1.741468 -179.74 5.013755 NA NA NA NA NA NA IDLE-MAT10-5A-1K-3_50-52 2.715 20865.5 22168 23567.5 3.2553 4.8771 6.6093 11.076 19.7643 25.016 17.4425 -178.902 6.099447 -173.33 0.187611 -171.184 5.013755 NA NA NA NA NA NA IDLE-MAT10-5A-1K-3_61-63 2.83 21500 22886 24069 10.3296 21.7286 29.124 36.3443 53.194 77.2756 56.1571 -167.679 1.964748 -173.728 2.142493 -174.228 3.017857 -27.4581 0.118251 -24.7649 0.196869 NA NA IDLE-MAT10-5A-1K-3_87-89 3.09 23662 24458 24960 12.4135 23.7736 30.7582 60.4459 106.1835 150.9989 105.5844 -180.984 1.52064 -179.028 0.902181 -185.779 3.634154 NA NA NA NA NA NA IDLE-MAT10-5A-1K-3-112-114 3.34 25094 25933 27186 14.1316 24.9242 30.1708 48.4003 76.8874 112.271 78.039 -161.609 14.04685 -175.066 1.226934 -169.97 15.98235 NA NA NA NA NA NA IDLE-MAT10-5A-1K-3_127-130 3.495 25627 26885.5 28380.5 18.0187 40.1271 62.7622 95.7456 107.3187 151.9803 105.1884 -173.967 1.059527 -177.015 0.621495 -187.92 2.074322 -27.8333 0.153877 -25.0741 0.090359 NA NA IDLE-MAT10-5A-1K-3_142-144 3.64 26366 27833 29320 28.2385 61.9846 147.137 242.1128 153.2298 221.5654 141.4753 -185.433 0.799196 -174.012 0.54455 -175.061 3.057523 NA NA NA NA NA NA IDLE-MAT10-5A-1K-4_4-6 3.757 27024.6 28570.5 29926.2 21.0583 65.2792 160.6252 261.7162 179.0148 235.2387 137.5824 -186.844 0.520669 -175.145 0.2973 -177.908 3.2339 -29.6467 0.107358 -27.091 0.112492 NA NA IDLE-MAT10-5A-1K-4_20-23 3.922 28135 29644.6 30696.2 50.7704 203.8982 567.2358 900.9151 442.7929 567.71 325.613 -181.492 0.13482 -174.996 0.634226 -177.414 2.752705 NA NA NA NA NA NA IDLE-MAT10-5A-1K-4_31-33 4.025 29025 30256.5 31026 33.8473 86.2301 202.2185 347.1077 268.1826 262.9411 138.782 -175.901 0.587301 -166.076 2.774242 NA NA -30.9821 0.147731 -28.3508 0.035835 NA NA IDLE-MAT10-5A-1K 4.152 30476.2 30986.8 31444 8.4069 19.9684 47.1549 75.9314 46.9631 57.9302 55.7656 -181.007 0.625949 -168.167 1.18688 -168.914 3.457634 NA NA NA NA NA NA IDLE-MAT10-5A-1K-4_53-55 4.245 31052 31487 32139.5 67.8546 163.7216 615.1114 880.5536 293.8509 341.3427 182.1703 -192.411 4.965953 -171.845 2.774242 -174.073 2.012168 -31.8052 0.105308 -28.945 0.107024 NA NA