# Makassar Strait 14,700 Year Leaf Wax Hydrogen Isotope Data #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original reference when using these data, # plus the Online Resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online Resource: http://hurricane.ncdc.noaa.gov/pls/paleox/f?p=519:1:::::P1_STUDY_ID:13378 #-------------------- # Archive/proxy: # Paleoceanography #-------------------- # Contribution Date # Date: 10-10-2012 #-------------------- # Title # Makassar Strait 14,700 Year Leaf Wax Hydrogen Isotope Data #-------------------- # Investigators: Tierney, J.E., D.W. Oppo, A.N. LeGrande, Y. Huang, Y. Rosenthal, and B.K. Linsley #-------------------- # Description and Notes # Descriptions: Hydrogen isotopic (dD) ratios of terrestrial higher plant # leaf waxes (dDwax, C30 fatty acid) in marine sediments # from southwest Sulawesi, Makassar Strait, Indonesia # for the past 14,700 years. # # We measured the hydrogen isotopic composition of leaf waxes (dDwax) # in marine sediment core BJ8-03-70GGC, located 12 km off the southwest # shore of Sulawesi in the Makassar Strait. Thirteen radiocarbon dates # constrain the depth- age model for core 70GGC. The age model is # based on a linear interpolation of the depth-age relationship between # calibrated dates with the additional assumption that the top of # the core is equivalent to 0 yr BP. Core 70GGC was sampled every # ~100 years downcore, with somewhat higher resolution during the # middle Holocene (near 4 ka) and the Younger Dryas chronozone # (12.7-11.5 ka). dDwax analyses were conducted as previously # described in Tierney et al. [2010], Paleoceanography. Briefly, # freeze-dried sediments were extracted with a solvent mixture # of dichloromethane:methanol (9:1,v/v) using an Accelerated Solvent # Extractor. Leaf waxes were purified from the resulting total lipid # extract via NH2 column chromatography, methylated with methanol # of a known isotopic composition, and then further purified via silica # gel chromatography. The C30 fatty acid was analyzed in triplicate # for its hydrogen isotopic composition via gas chromatography-isotope # ratio monitoring-mass spectrometry (GC-IR-MS), using a Thermo Delta # XL mass spectrometer at Brown University. H2 standard gas calibrated # to VSMOW was injected three times before and after the sample lipid # peaks as an internal standard. In addition, an external fatty acid # methyl ester (FAME) standard of known isotopic composition was run # every nine injections to monitor drift. Isotopic values were # corrected for the added methyl group. Results presented here # are triplicate means, and average triplicate standard error # was 0.7‰. # # # ADDITIONAL REFERENCE: # Tierney, J.E., D.W. Oppo, Y. Rosenthal, J.M. Russell, # and B.K. Linsley. 2010. # Coordinated hydrological regimes in the Indo-Pacific region # during the past two millennia. # Paleoceanography, 25, PA1102, doi:10.1029/2009PA001871. # # #-------------------- # Publication/Citation # Authors: Tierney, J.E., D.W. Oppo, A.N. LeGrande, Y. Huang, Y. Rosenthal, and B.K. Linsley # Journal Name: Journal of Geophysical Research-Atmospheres # Published Title: The influence of Indian Ocean atmospheric circulation on Warm Pool hydroclimate during the Holocene epoch # Published Date: 10-4-2012 # DOI: 10.1029/2012JD018060 # Volume: 117(D19) # Issue: D19108 # Pages: # Abstract: Existing paleoclimate data suggest a complex evolution of hydroclimate within the Indo-Pacific Warm Pool (IPWP) during the Holocene epoch. Here we introduce a new leaf wax isotope record from Sulawesi, Indonesia and compare proxy water isotope data with ocean-atmosphere general circulation model (OAGCM) simulations to identify mechanisms influencing Holocene IPWP hydroclimate. Modeling simulations suggest that orbital forcing causes heterogenous changes in precipitation across the IPWP on a seasonal basis that may account for the differences in time-evolution of the proxy data at respective sites. Both the proxies and simulations suggest that precipitation variability during the September-November (SON) season is important for hydroclimate in Borneo. The preëminence of the SON season suggests that a seasonally lagged relationship between the Indian monsoon and Indian Ocean Walker circulation influences IPWP hydroclimatic variability during the Holocene. # #--------------------- # Funding Agency # Funding Agency Name: US National Oceanic and Atmospheric Administration (NOAA) # Grant: Climate and Global Change Postdoctoral Fellowship #-------------------- # Site Information # Name: BJ8-03-70GGC # Region: Western Tropical Pacific # Country: Indonesia # Northmost Latitude: -3.566 # Southmost Latitude: -3.566 # Eastmost Longitude: 119.383 # Westmost Longitude: 119.383 # Elevation: -482 m #------------------ # Data Collection # Core Name: BJ8-03-70GGC # First Year: 14759 # Last Year: 60 # Time Unit: Calendar Years before present # Core Length: 4.075 m # Notes: #------------------ # Chronology # # Accession # Species Depth (cm) 14C Year 1-sigma error Median Year BP Lower 1-sigma Upper 1-sigma # N/A N/A 0 N/A N/A 0 N/A N/A # OS-45435 G. ruber & G. sacculifer 63.5 1310 30 853 901 816 # OS-54152 G. ruber & mixed planktonics 104 2750 50 2472 2540 2352 # OS-54153 G. ruber & mixed planktonics 176 4240 50 4341 4413 4269 # OS-60747 G. ruber & mixed planktonics 201.5 4850 40 5155 5245 5079 # OS-60750 G. ruber & mixed planktonics 241.5 5410 35 5789 5847 5737 # OS-54154 G. ruber & mixed planktonics 280 6160 60 6594 6666 6513 # OS-60737 G. ruber & mixed planktonics 320.5 7190 45 7653 7695 7598 # OS-70826 mixed planktonics 330.5 8080 40 8538 8589 8481 # OS-70827 mixed planktonics 340.5 8700 45 9380 9438 9325 # OS-70828 mixed planktonics 350.5 9210 45 10030 10124 9954 # OS-60748 G. ruber & mixed planktonics 361.5 10250 40 11223 11251 11187 # OS-65581 mixed planktonics 393.5 12550 50 13990 14064 13898 # OS-45436 G. ruber & G. sacculifer 405.5 12900 45 14649 14934 14257 # #-------------------- # Variables # # End Description/Documentation (lines begin with #) # variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (8 components: material, error, units, anomaly, period, archive, detail, method) ## depth_cm depth,,, cm,,,,,N ## age_calBP Age,,,calendar yr before 1950AD,,,,,N ## dDwax dD terrestrial leaf wax, C30 fatty acid,, per mil,,,,,N ## dDwaxIVcorr dD terrestrial leaf wax Ice Volume corrected,C30 fatty acid,,per mil,,paleoceanography,,,N #---------------- # Data: # Data line format: tab-delimited text, variable short name as header # Missing values -999 depth_cm age_calBP dDwax dDwaxIVcorr 4.5 60 -175.5 -175.5 8.5 114 -171.9 -171.9 12.5 168 -172.3 -172.3 16.5 222 -172.7 -172.7 20.5 275 -172.4 -172.4 24.5 329 -172.9 -172.9 28.5 383 -170.3 -170.3 32.5 437 -167.1 -167.1 36.5 490 -173.3 -173.3 40.5 544 -169.2 -169.2 44.5 598 -171.0 -171.0 48.5 652 -171.4 -171.4 52.5 705 -171.2 -171.2 56.5 759 -174.0 -174.0 60.5 813 -170.5 -170.5 64.5 893 -169.0 -169.0 68.5 1053 -166.0 -166.0 72.5 1213 -171.2 -171.2 76.5 1373 -171.2 -171.2 80.5 1533 -170.1 -170.1 84.5 1692 -172.3 -172.3 88.5 1852 -169.4 -169.4 92.5 2012 -172.0 -172.0 96.5 2172 -172.3 -172.3 100.5 2332 -167.0 -167.1 104.5 2485 -171.7 -171.8 108.5 2589 -170.1 -170.2 112.5 2693 -171.6 -171.7 116.5 2796 -171.3 -171.5 120.5 2900 -171.4 -171.6 124.5 3004 -171.1 -171.3 128.5 3108 -164.8 -165.0 132.5 3212 -164.5 -164.8 136.5 3316 -168.9 -169.1 140.5 3419 -169.9 -170.2 144.5 3523 -171.9 -172.2 148.5 3627 -169.9 -170.2 150.5 3679 -172.9 -173.2 154.5 3783 -172.5 -172.8 158.5 3887 -173.0 -173.3 160.5 3939 -171.7 -172.0 162.5 3991 -171.4 -171.6 166.5 4094 -172.0 -172.3 170.5 4198 -174.1 -174.3 172.5 4250 -168.1 -168.4 174.5 4302 -173.1 -173.3 178.5 4421 -174.4 -174.6 180.5 4485 -168.9 -169.2 182.5 4548 -175.4 -175.6 184.5 4612 -169.8 -170.0 186.5 4676 -166.6 -166.8 188.5 4740 -166.5 -166.7 192.5 4868 -168.9 -169.1 196.5 4995 -169.4 -169.6 200.5 5123 -171.5 -171.6 204.5 5203 -171.4 -171.5 208.5 5266 -170.2 -170.3 212.5 5329 -167.1 -167.3 216.5 5393 -170.4 -170.6 220.5 5456 -167.8 -168.0 224.5 5520 -166.8 -167.0 228.5 5583 -170.8 -171.1 232.5 5646 -170.9 -171.2 236.5 5710 -165.5 -165.8 240.5 5773 -169.1 -169.4 244.5 5852 -169.6 -169.9 248.5 5935 -169.6 -169.9 252.5 6019 -168.4 -168.8 256.5 6103 -169.3 -169.7 260.5 6186 -168.5 -168.9 268.5 6354 -171.9 -172.4 272.5 6437 -171.2 -171.6 276.5 6521 -171.5 -171.9 280.5 6607 -167.2 -167.6 284.5 6712 -170.8 -171.3 288.5 6816 -171.6 -172.1 292.5 6921 -168.5 -169.0 296.5 7025 -168.8 -169.4 300.5 7130 -167.9 -168.5 304.5 7235 -168.1 -168.7 308.5 7339 -169.4 -170.0 312.5 7444 -170.9 -171.5 314.5 7496 -169.0 -169.7 316.5 7548 -171.9 -172.5 318.5 7601 -169.6 -170.2 320.5 7653 -171.1 -171.7 322.5 7830 -169.6 -170.3 324.5 8007 -170.0 -170.7 326.5 8184 -166.3 -167.1 328.5 8361 -171.9 -172.6 330.5 8538 -167.9 -168.6 332.5 8706 -167.1 -167.7 334.5 8875 -168.8 -169.4 336.5 9043 -170.6 -171.3 338.5 9212 -165.6 -166.2 340.5 9380 -165.5 -166.2 342.5 9510 -164.0 -164.8 344.5 9640 -170.2 -171.0 346.5 9770 -166.6 -167.5 348.5 9900 -172.0 -172.9 350.5 10030 -164.9 -165.9 352.5 10247 -162.5 -163.7 354.5 10464 -162.8 -164.0 356.5 10681 -162.4 -163.8 357.5 10789 -171.2 -172.6 358.5 10898 -166.4 -167.8 359.5 11006 -166.8 -168.2 360.5 11115 -171.4 -172.9 361.5 11223 -162.1 -163.8 362.5 11309 -159.3 -161.1 363.5 11396 -161.6 -163.5 364.5 11482 -161.7 -163.7 365.5 11569 -162.9 -165.0 366.5 11655 -156.6 -158.9 367.5 11742 -164.2 -166.5 369.5 11915 -160.5 -163.1 370.5 12001 -161.0 -163.7 371.5 12088 -159.1 -161.9 372.5 12174 -161.4 -164.3 373.5 12261 -162.2 -165.1 374.5 12347 -159.7 -162.7 375.5 12434 -160.6 -163.6 377.5 12607 -158.9 -162.0 378.5 12693 -159.2 -162.3 379.5 12779 -159.3 -162.5 380.5 12866 -154.8 -158.0 381.5 12952 -160.8 -164.1 382.5 13039 -156.8 -160.1 384.5 13212 -156.8 -160.3 386.5 13385 -156.2 -159.8 388.5 13558 -154.3 -158.0 390.5 13731 -155.2 -159.1 392.5 13904 -159.3 -163.3 394.5 14045 -155.1 -159.3 396.5 14155 -154.3 -158.5 398.5 14265 -152.5 -156.8 400.5 14374 -154.5 -158.8 402.5 14484 -155.9 -160.3 404.5 14594 -155.3 -159.7 407.5 14759 -154.3 -158.9