# Comparison of published versus recalibrated age models for Lake Lamongan, Indonesia #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/21731 # Description: NOAA Landing Page # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/dixon2017australasia/dixon2017lakelamongan.txt # Description: NOAA location of the template # # # Archive: Lake sediment mineralogy # # Parameter_Keywords: #--------------------------------------- # Contribution_Date # Date: 2017-12-11 #--------------------------------------- # File_Last_Modified_Date # Date: 2017-12-11 #--------------------------------------- # Title # Study_Name: Comparison of published versus recalibrated age models for Lake Lamongan, Indonesia #--------------------------------------- # Investigators # Investigators: Dixon, Bronwyn C.; Tyler, Jonathan J.; Lorrey, Andrew M; Goodwin, Ian D; Gergis, Joelle; Drysdale, Russell N #--------------------------------------- # Description_Notes_and_Keywords # Description: # Provided Keywords: age modelling, Bayesian # Notes # Value of 0.5 = semi-quantitative value denoting calcite presence, however low abundance or presence in thin laminae precluded measurement of mol% MgCO3 # Value of 12 = semi-quantitative value denoting aragonite presence based on empirical results from Müller et al. 1972; when aragonite and calcite were both present, the value of 12 representing aragonite was used # Other values are measurements of mol% MgCO3; see Crausbay et al. 2006 for complete discussion # #--------------------------------------- # Publication # Authors: Dixon, Bronwyn C.; Tyler, Jonathan J.; Lorrey, Andrew M; Goodwin, Ian D; Gergis, Joelle; Drysdale, Russell N # Published_Date_or_Year: 2017 # Published_Title: Low-resolution Australasian palaeoclimate records of the last 2000 years # Journal_Name: Climate of the Past # Volume: # Edition: # Issue: # Pages: # Report Number: # DOI: # Online_Resource: # Full_Citation: # Abstract: Non-annually resolved palaeoclimate records in the Australasian region were compiled to facilitate investigations of decadal to centennial climate variability over the past 2000 years. A total of 661 lake/wetland, geomorphic, marine, and speleothem records were identified and then assessed against a set of a priori criteria based on temporal resolution, record length, dating methods, and confidence of the proxy-climate relationship over the Common Era. A high quality subset of 22 records across Australasia met the criteria and they are endorsed for subsequent analyses. New chronologies based on progressive Bayesian techniques were constructed for the high quality records to ensure a consistent approach to age modelling and quantification of age uncertainties. Chronological uncertainty was the primary reason why records did not meet the selection criteria. Despite present limitations, existing proxies and reconstruction techniques that successfully capture climate variability in the region show potential to address spatial gaps and expand the range of climate variables covering the last 2000 years from the Australasian region. #--------------------------------------- # Publication # Authors: Crausbay, SD; Russell, JM; Schnurrenberger, DW # Published_Date_or_Year: 2006 # Published_Title: A ca. 800-year lithologic record of drought from sub-annually laminated lake sediment, East Java # Journal_Name: Journal of Paleolimnology # Volume: 35 # Edition: # Issue: 3 # Pages: 641-659 # Report Number: # DOI: 10.1007/s10933-005-4440-7 # Online_Resource: # Full_Citation: Crausbay, S. D., Russell, J. M. & Schnurrenberger, D. W. 2006. A ca. 800-year lithologic record of drought from sub-annually laminated lake sediment, East Java. Journal of Paleolimnology, 35, 641-659. # Abstract: Lithostratigraphic analyses of a sub-annually laminated core from Ranu Lamongan, a maar lake on the island of Java, document considerable changes in the lake's chemistry and water balance over the past ca. 800 calendar years. Composition of the dark (clastics) and light (diatoms and/or calcium carbonate minerals) couplets suggests that these laminations form in response to seasonal changes in rainfall and water-column overturn in the lake. Calcium carbonate is not continuous in the core, and when it occurs it varies, sometimes abruptly, in carbonate phase and elemental composition (low Mg-calcite Mg-calcite, and aragonite). A significant correlation between Mg/Ca changes and delta(18)O variations in authigenic calcium carbonate suggest the basin is highly sensitive to hydrologic variation. Lithologic data suggest calcium carbonate precipitates and thus records hydrologic conditions during the dry season - a season in which rainfall anomalies are highly correlated with the phase of ENSO. Our carbonate-based record of Mg/Ca shows variability in evaporative concentration on a quasi-seasonal frequency for the past ca. 800 years. Our record shows two multi-decadal periods of drought - ca. 1275-1325 and ca. 1450-1650 CE - the latter of which was especially strong and/or prolonged. Our record also shows a possible change in drought frequency at around 1650 CE, in which periods of calcium carbonate precipitation and Mg/Ca change shifted from multi-decadal to interannual variability. Given the strong correlations between modern-day drought in East Java and ENSO variability, our drought record may indicate a regime shift in the behavior of the ENSO system about 350 years ago. Finally, comparisons between our record and others suggest that variation in ENSO on centennial and sub-centennial scales is not strongly associated with changes in the global mean climate state. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: # Grant: #--------------------------------------- # Site Information # Site_Name: Ranu Lamongan # Location: # Country: # Northernmost_Latitude: -7.983333 # Southernmost_Latitude: -7.983333 # Easternmost_Longitude: 113.383333 # Westernmost_Longitude: 113.383333 # Elevation: 240 #--------------------------------------- # Data_Collection # Collection_Name: # First_Year: 810 ± 60 # Last_Year: # Time_Unit: C14 Years # Core_Length: 9.82 # Notes: collect 1998CE #--------------------------------------- # Chronology_Information # Chronology: # # Lab ID AA37286 Beta 188882 AA37287 Beta 188883 Beta 188884 AA37288 AA37289 AA37290 Beta 188886 Beta 126066 # Dated material leaves leaves leaves & wood leaves leaves leaves wood leaves wood wood # depth_bot (cm) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # depth_top (cm) 180.5 247 317 339 382 531 615.2 796 851 981 # age (bp) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # age14C (bp) 263 230 397 240 240 260 382 414 510 810 # age_error (years) 35 40 41 40 40 30 36 33 40 60 # calibrated age (cal BP) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # 2-sigma error of cal age (years) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # cal_age_range_old (bp) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # cal_age_range_young (2_s) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # depth (mm) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # thickness (mm) NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN # notes weight=5mg; Excluded from age model weight=9.67mg weight=8.7mg; excluded from age model weight=6.12mg; excluded from age model weight=8.7mg weight=5.8mg weight=30.9mg weight=9.64mg weight=30.6mg unknown # #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## Depth from sediment surface (cm) ,Depth in the core,NA,NA,cm,NA,NA,NA,NA,N ## BACON0.05CI ,5% confidence interval age as calculated in BACON age modelling software,NA,NA,Years before present (present=1950CE),NA,,NA,NA,N ## BACON0.95CI ,95% confidence interval age as calculated in BACON age modelling software,NA,NA,Years before present (present=1950CE),NA,,NA,NA,N ## BACONmedian ,median sample age as calculated in BACON age modelling software,NA,NA,Years before present (present=1950CE),NA,,NA,NA,N ## BACONwmean ,weighted mean age as calculated in BACON age modelling software,NA,NA,Years before present (present=1950CE),NA,,NA,NA,N ## Drought Index ,Drought index,calcite,NA,mol% MgCO3,~1cm light laminations - Dry season, ~1-10cm dark laminations - Wet season, ~10-60cm massive bed - mixed? (dry - Austral winter),sediment,see Notes,X-ray defraction,N #------------------------ # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: NA Depth from sediment surface (cm) BACON0.05CI BACON0.95CI BACONmedian BACONwmean Drought Index 1.2 -47.8 -43.8 -46.5 -46.3 0.5 7.6 -46.6 -35.2 -42.8 -42.3 0.5 9.1 -46 -34 -41.9 -41.3 0.5 19.4 -42.5 -24 -35.3 -34.7 6.33992 19.8 -42.5 -23.6 -35 -34.4 0.5 22 -41.4 -21.8 -33.6 -33 0.5 24.8 -40.1 -19.2 -31.7 -31.2 4.5752 26.8 -39.1 -17.7 -30.5 -29.9 0.5 38.9 -33.9 -7.6 -23 -22.3 0.5 39.9 -33.5 -6.7 -22.4 -21.7 3.4314 41.7 -32.4 -5.6 -21.3 -20.5 0 43.2 -31.8 -4.5 -20.4 -19.6 0.5 50 -28.1 0.4 -16 -15.2 0.5 50.3 -28 0.6 -15.8 -15 1.7974 50.8 -27.8 0.9 -15.4 -14.7 0.5 51.7 -27.3 1.7 -14.9 -14.1 4.05232 52 -27.1 2.1 -14.7 -13.9 3.268 53 -26.4 2.8 -14 -13.3 5.58828 54.1 -25.8 3.4 -13.4 -12.6 4.11768 54.6 -25.6 3.8 -13.1 -12.3 3.46408 55 -25.4 4.1 -12.8 -12 0.5 57.4 -24.2 5.6 -11.3 -10.5 0.5 63.6 -21.1 10.5 -7.2 -6.5 0.5 66.5 -19.5 12.7 -5.4 -4.7 0.5 73 -15.8 17.1 -1.2 -0.5 0.5 75.7 -14.4 19.2 0.6 1.2 0.5 76.2 -14.2 19.5 0.9 1.5 0.5 77.6 -13.3 20.3 1.8 2.4 3.69284 81.5 -11 23.4 4.3 4.9 0.5 81.7 -10.9 23.5 4.4 5 3.36604 82.1 -10.6 23.8 4.7 5.3 0.5 82.3 -10.5 23.9 4.8 5.4 5.00004 82.5 -10.4 24.2 5 5.5 3.16996 82.7 -10.2 24.4 5.1 5.7 3.23532 82.9 -10.1 24.6 5.2 5.8 4.5752 83.5 -9.9 25 5.6 6.2 0.5 83.9 -9.7 25.5 5.8 6.5 2.58172 84.1 -9.6 25.7 6 6.6 0.5 84.3 -9.4 25.7 6.1 6.7 0.5 84.7 -9.1 25.9 6.4 7 4.37912 85.1 -8.9 26.1 6.6 7.2 4.70592 85.5 -8.7 26.3 6.9 7.5 0.5 86.9 -7.7 27.3 7.8 8.4 4.80396 88.2 -7 28.2 8.6 9.2 4.83664 90.1 -6.1 29.3 9.8 10.4 3.49676 92.2 -4.9 30.8 11 11.8 3.49676 92.7 -4.7 31.2 11.3 12.1 1.43792 93 -4.5 31.2 11.5 12.3 3.00656 95.2 -3.3 33.1 13 13.7 8.987 101.2 -0.1 37.6 16.7 17.6 4.44448 108.5 3.9 42.6 21.4 22.1 0.5 108.7 4.1 42.7 21.5 22.2 0.5 108.9 4.2 43 21.7 22.4 0.5 109.7 4.8 43.4 22.2 22.9 1.89544 115 7.7 47.1 25.4 26.2 3.4314 115.4 8.1 47.5 25.6 26.5 0.5 115.7 8.2 47.7 25.8 26.7 0.5 116 8.4 48 26.1 26.8 6.0458 116.5 8.7 48.3 26.4 27.1 8.4968 127.7 14.8 56.2 33.7 34.3 3.39872 136.3 19.6 62.1 39.2 39.7 0.5 137.8 20.4 62.8 40.1 40.7 4.77128 138 20.6 63.2 40.3 40.8 0.5 140.2 21.5 64.8 41.6 42.2 0.5 140.8 21.8 65.2 42 42.6 0.5 142.1 22.5 66.1 42.9 43.4 0.5 142.3 22.6 66.3 43 43.5 0.5 144.3 23.6 67.8 44.3 44.8 0.5 146.2 25.2 69 45.5 46 0.5 146.4 25.3 69 45.6 46.2 0.5 146.6 25.4 69.1 45.7 46.3 1.634 155.1 30.5 75.6 51.1 51.7 0.5 155.5 30.6 75.9 51.4 51.9 0.5 156.2 31.2 76.5 51.8 52.4 0.5 157.3 31.9 77.3 52.6 53.1 0.5 160.6 33.6 79.7 54.7 55.2 0.5 163.3 35 81.4 56.4 56.9 0.5 168.9 37.9 85.3 59.9 60.4 9.70596 169.7 38.6 85.8 60.4 61 0.5 176 41.9 90.2 64.3 64.9 0.5 197.9 54.7 104.9 78.3 78.7 5.0654 198.2 54.8 105.1 78.4 78.9 3.95428 204.7 58.5 109.5 82.4 82.9 0.5 206 59.8 110.3 83.1 83.7 0.5 210.5 62.9 114 85.9 86.6 5.13076 210.7 63 114.3 86.1 86.7 0.5 221.1 69.1 121.4 92.8 93.4 0.91504 221.4 69.4 121.5 93 93.6 0.5 221.6 69.5 121.6 93.1 93.7 3.88892 223 70.4 122.6 94 94.6 0.5 223.2 70.6 122.9 94.1 94.7 0.5 224.4 71.3 123.7 94.8 95.5 4.50984 225.7 72.4 124.4 95.7 96.3 1.73204 226.1 72.7 125.1 96 96.6 0.5 226.3 72.7 125 96.1 96.8 0.5 226.5 72.8 125.4 96.3 96.9 0.5 226.7 73 125.4 96.4 97 0.5 228.1 73.5 126.4 97.2 97.9 0.5 228.6 74.2 126.9 97.6 98.2 4.37912 229.5 74.7 127.8 98.2 98.8 5.35952 231.9 76.2 129.6 99.8 100.4 0.5 235 77.9 131.7 101.6 102.3 5.0654 246.6 84.4 139.3 108.9 109.5 1.92812 248 85.3 140.4 109.7 110.4 3.79088 258.7 92.1 146.7 116.6 117.3 7.64712 265.4 96.4 150.2 120.7 121.5 12 267.5 97.6 151.5 121.9 122.8 12 270.9 100 153.2 124 125 0.5 274.6 102.1 155.5 126.4 127.3 12 275.1 102.6 155.7 126.8 127.7 12 275.8 102.8 156.1 127.2 128.1 12 277.6 104 157.3 128.3 129.2 3.1046 278.5 104.8 158 129 129.8 12 279.3 105.1 158.5 129.4 130.3 12 279.9 105.4 159 129.9 130.7 12 284.3 108.1 161.3 132.6 133.5 0.5 285.4 108.8 161.8 133.3 134.2 4.50984 314.3 127 179.8 152 152.9 5.58828 358.5 155.3 206.8 181.3 181.6 0.5 360.5 156.4 208.4 182.7 182.9 0.5 402.5 184.8 233.9 209.7 210 0.5 405.6 186.8 236.1 211.7 212 3.33336 447.8 215.2 264.4 238.7 239.5 0.5 448.8 215.8 264.8 239.5 240.2 0.5 452.4 218.4 267.1 241.7 242.5 7.0262 457.5 221.8 270.4 245.1 245.9 0.5 459 222.8 271.4 246 246.9 0.5 459.8 223.1 272.2 246.6 247.4 0.5 460 223.2 272.2 246.7 247.5 6.76476 460.3 223.4 272.5 246.9 247.7 0.5 461.8 224.7 273.4 247.9 248.7 0.5 462.9 225.4 274.1 248.6 249.5 0.5 463.4 225.6 274.7 249 249.8 0.5 464 226.3 275.1 249.4 250.2 9.70596 464.7 226.6 275.2 249.9 250.6 3.23532 465.3 227.1 275.3 250.2 251 0.5 467.6 228.4 276.9 251.8 252.4 0.5 468 228.5 277.1 252.1 252.7 0.5 468.3 229.2 277.2 252.2 252.9 0.5 468.8 229.4 277.4 252.6 253.2 5.52292 473.5 232.7 280.4 255.7 256.3 0.5 475.9 234.3 282 257.2 257.9 3.07192 476.7 234.9 282.6 257.7 258.4 0.5 477.5 235.2 283 258.2 258.9 3.9216 478.7 236.3 283.9 258.9 259.7 3.62748 480 237.1 284.8 259.7 260.5 3.79088 480.5 237.4 285 260 260.8 0.5 481.6 238.3 285.5 260.7 261.6 3.268 482.4 238.8 286.1 261.2 262.1 12 482.9 239 286.4 261.6 262.4 12 483.3 239.2 286.7 261.8 262.7 3.49676 483.6 239.3 286.9 262 262.9 3.46408 484.5 239.9 287.5 262.6 263.5 0.5 486.3 241.2 288.7 263.8 264.6 0.5 486.8 241.5 289.1 264.1 265 0.5 489.1 243.3 290.5 265.7 266.5 0.5 489.3 243.5 290.6 265.8 266.6 3.30068 491.4 245 291.7 267.1 268 6.40528 493.1 246.5 292.7 268.3 269.2 12 493.6 247 292.8 268.7 269.5 6.8628 493.7 247.1 293 268.7 269.6 12 495.5 248.5 294.3 270 270.9 12 496.5 249.1 294.7 270.6 271.5 12 496.8 249.3 295 270.8 271.7 12 497.1 249.5 295.2 271 271.9 12 498.5 250.4 296 271.9 272.8 12 499.2 250.8 296.5 272.3 273.3 12 499.6 251 296.9 272.6 273.5 12 499.9 251.1 297.2 272.8 273.7 12 500 251.1 297.2 272.9 273.8 12 500.1 251.2 297.2 272.9 273.8 12 500.2 251.4 297.1 273 273.9 12 500.4 251.6 297.3 273.2 274 12 501.3 252.2 297.8 273.7 274.6 12 503 253.2 298.6 274.8 275.7 12 503.2 253.5 298.7 275 275.8 12 557.5 290.1 336.1 311 311.8 12 558.1 290.5 336.8 311.4 312.2 12 558.6 290.9 337.1 311.8 312.5 12 558.9 291 337.4 312 312.7 12 559.2 291.2 337.7 312.2 312.9 12 562.9 293.8 340.1 314.7 315.4 12 563.5 294.2 340.7 315.1 315.8 12 564.8 294.9 341.7 316 316.7 12 565 295.1 341.7 316.1 316.9 12 565.2 295.2 341.8 316.3 317 12 565.8 295.5 342.1 316.8 317.5 12 565.9 295.6 342.3 316.8 317.5 12 567.1 296.2 343.3 317.8 318.5 12 567.4 296.4 343.6 318 318.7 12 567.6 296.5 343.8 318.1 318.8 12 567.9 296.7 343.9 318.3 319.1 12 569.5 297.5 344.8 319.6 320.2 3.30068 572.4 299.5 346.9 321.8 322.4 12 573 299.9 347.4 322.2 322.9 2.1242 573.9 300.5 347.9 322.8 323.6 2.90852 590.5 312.2 360.6 335.1 335.8 3.1046 592.5 313.6 361.9 336.6 337.3 0.62092 592.9 314.1 362.4 336.8 337.6 2.67976 593.4 314.5 362.7 337.2 338 3.1046 594.5 315.2 363.9 338 338.8 12 595.7 316.2 365 338.8 339.7 12 596.9 317.1 365.9 339.7 340.6 0.5 597.5 317.4 366.4 340.2 341.1 7.33666 602.5 320.7 370 344.1 344.8 12 656 358.3 412.4 384 384.7 0.5 658 359.4 414 385.5 386.2 0.5 659 359.8 415 386.2 386.9 0.5 659.2 360.1 415.1 386.4 387 0.5 659.3 360.2 415.3 386.5 387.1 0.5 659.8 360.3 415.6 386.8 387.5 0.5 660.3 360.6 415.8 387.2 387.9 0.5 660.8 361.2 416.2 387.5 388.2 0.5 661 361.4 416.4 387.6 388.3 0.5 661.3 361.5 416.7 387.8 388.6 0.5 663.3 363 417.9 389.3 390 0.5 664 363.6 418.4 389.8 390.5 0.5 670.7 368.2 423.9 394.8 395.6 0.5 672.5 369.6 425.6 396.1 396.9 0.5 673.8 371 426.7 397.1 397.9 0.5 677.1 373.7 429.3 399.6 400.4 1.56864 677.5 374.1 429.7 399.9 400.7 0.5 678.7 374.7 430.2 400.7 401.6 0.5 679.1 375 430.5 401 401.9 0.5 679.3 375.1 430.7 401.1 402 0.817 679.6 375.4 430.8 401.3 402.2 2.25492 680.1 375.7 431.4 401.7 402.6 3.66016 681 376.6 431.8 402.3 403.2 2.58172 681.3 376.8 432 402.5 403.5 2.64708 682.7 377.9 433.2 403.6 404.5 0.5 684.2 378.8 434.3 404.7 405.7 5.03272 684.9 379.7 434.9 405.1 406.1 0.5 774.8 447.3 500.9 472.8 473.5 4.54252 775.3 447.6 501.2 473.2 473.9 0.5 781.7 452.8 506.1 477.9 478.7 0.5 782.8 453.4 507.1 478.8 479.5 0.5 783.7 454.1 508.1 479.5 480.2 0.5 783.9 454.4 508.3 479.6 480.4 0.5 785 455.6 509.4 480.4 481.2 0.5 787.8 457.6 512 482.4 483.3 0.5 799.9 467 520.8 491.7 492.4 0.5 800.1 467.1 521 491.9 492.6 0.5 800.7 467.7 521.5 492.4 493.1 2.6144 801.3 468.5 521.8 492.9 493.6 0.5 801.6 468.8 522 493.1 493.8 3.00656 801.7 468.8 522.1 493.2 493.9 0.5 802.7 469.5 522.5 494 494.7 2.90852 803.1 469.7 522.8 494.4 495.1 0.5 803.8 470.4 523.5 494.9 495.7 0.5 804.2 470.9 523.8 495.3 496 0.5 805.7 471.9 525.3 496.5 497.3 5.58828 806.1 472.2 525.6 496.8 497.6 3.13728 806.7 472.7 526.2 497.3 498.1 2.451 807.6 473.3 526.9 497.9 498.8 0.5 807.8 473.3 526.9 498.1 499 0.5 808.3 473.7 527.5 498.5 499.4 0.5 809.4 474.7 528.3 499.5 500.4 0.5 809.9 475.1 528.6 499.9 500.8 0.5 810.6 475.5 529.1 500.4 501.4 0.5 811.1 475.9 529.7 500.9 501.8 0.5 811.9 476.4 530.4 501.6 502.5 3.69284 812.2 476.7 530.9 501.8 502.8 0.5 812.8 477.1 531 502.4 503.3 3.13728 813.2 477.6 531.4 502.7 503.6 0.5 813.5 477.8 531.7 502.9 503.9 0.5 814.8 479 532.5 504.2 505 0.5 815 479.2 532.7 504.3 505.1 3.79088 815.1 479.3 533 504.4 505.2 3.20264 815.2 479.5 533.2 504.5 505.3 0.5