# Lake Lading, Indonesia 1,100 Year Grain Size and Geochemical Flood 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 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/33193 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/lading2019flood.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # # Data_Type: Paleolimnology # # Dataset_DOI: # # Parameter_Keywords: physical properties, geochemistry #--------------------------------------- # Contribution_Date # Date: 2021-04-02 #--------------------------------------- # File_Last_Modified_Date # Date: 2021-04-02 #--------------------------------------- # Title # Study_Name: Lake Lading, Indonesia 1,100 Year Grain Size and Geochemical Flood Data #--------------------------------------- # Investigators # Investigators: Rodysill, J.R.; Russell, J.M.; Vuille, M.; Dee, S.; Lunghino, B.; Bijaksana, S. #--------------------------------------- # Description_Notes_and_Keywords # Description: Lake Lading, Indonesia sediment grain size and geochemistry interpreted to reflect a flood history for the past 1,100 years. # Provided Keywords: flood, precipitation, Pacific Ocean, El Niņo-Southern Oscillation, La Niņa #--------------------------------------- # Publication # Authors: Jessica R. Rodysill, James M. Russell, Mathias Vuille, Sylvia Dee, Brent Lunghino, Satria Bijaksana # Published_Date_or_Year: 2019-12-01 # Published_Title: La Niņa-driven flooding in the Indo-Pacific warm pool during the past millennium # Journal_Name: Quaternary Science Reviews # Volume: 225 # Edition: 106020 # Issue: # Pages: # Report_Number: # DOI: 10.1016/j.quascirev.2019.106020 # Online_Resource: https://www.sciencedirect.com/science/article/pii/S0277379119306845 # Full_Citation: # Abstract: Extreme precipitation events are one of the most consequential components of climate change for society. The El Niņo-Southern Oscillation (ENSO) is the dominant mode of precipitation variability in the tropics and causes severe flooding and drought in many socioeconomically vulnerable regions. It remains unclear how tropical rainfall extremes and ENSO are changing in response to anthropogenic forcing, demanding that we investigate the relationships between precipitation, ENSO, and external forcing in the past. Lake sediment records have provided benchmark records of extreme flood events from the eastern tropical Pacific, where paleofloods have been interpreted to reflect El Niņo events during the last millennium. However, the connections between flooding and ENSO variability in this region are uncertain, and the eastern Pacific can only capture precipitation events driven by El Niņo, not La Niņa. Thus, it is unclear how the ENSO system and tropical rainfall extremes have changed in the recent past. Here, we reconstruct flood events during the past millennium using a lake sediment record from East Java, Indonesia, which can provide insight into flooding driven by La Niņa. We detect flood frequency variations in the western tropical Pacific that are highly coherent with records from the eastern part of the basin over the past millennium. Our findings demonstrate that heavy rainfall and flooding occurs more frequently on both sides of the tropical Pacific during periods of warmer Northern Hemisphere mean temperatures, implying that ENSO-driven rainfall extremes could intensify in the near future. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Oceanic and Atmospheric Administration Climate Change Data and Detection program # Grant: NA09OAR4310090 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation # Grant: 0902845 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Geographic Society # Grant: 8083-06 #--------------------------------------- # Site_Information # Site_Name: Lake Lading # Location: Ocean>Indian Ocean>Indonesia # Northernmost_Latitude: -8.008833 # Southernmost_Latitude: -8.008833 # Easternmost_Longitude: 113.3125 # Westernmost_Longitude: 113.3125 # Elevation: 324 #--------------------------------------- # Data_Collection # Collection_Name: LAD10flood # First_Year: 915 # Last_Year: 1985 # Time_Unit: AD # Core_Length: 5.7 # Notes: A surface drive was collected in 2010 and extruded in the field. Only the top 2 cm are used in the composite record. This core is named LAD10. The age model has been updated since the 2013 QSR publication on the same core. #--------------------------------------- # Chronology_Information # Chronology: # # Core ID Sediment core identification # Cumulative sediment depth (cm) Composite sediment depth in centimeters # Cumulative sediment depth (cm) with sand beds and ashes removed Composite sediment depth in centimeters after removing sand and volcanic ash beds # Lab code Lab sample code # Type Type of age information (14C: radiocarbon, 210Pb: lead-210 activity, Core top: date of surface core collection and extrusion in the field) # Material Dated Type of material that was dated # 14C age (years B1950) radiocarbon years before 1950 AD # 14C age error (years) radiocarbon year error in years # calibrated date (year AD) date in Year AD calculated in Bacon v. 2.2 using the IntCal13 calibration. # min date (year AD) youngest date in year AD of calibrated date range. For 210Pb ages, the range is estimated from analytical uncertainty of 210Pb activities. For 14C ages, the range is the 95% confidence inteval calculated in Bacon v. 2.2 using the IntCal13 calibration. # max date (year AD) oldest date in year AD of calibrated date range. For 210Pb ages, the range is estimated from analytical uncertainty of 210Pb activities. For 14C ages, the range is the 95% confidence inteval calculated in Bacon v. 2.2 using the IntCal13 calibration. # 210Po Total Activity (DPM/g) Total activity of 210Po after accounting for detector background 210Po activity and 209Po spike standard blank in DPM/g # 210Po error +/- 1 S.D. (DPM/g) 1 standard deviation error of 210Po total activity calculated from analytical uncertainty # 210Po Unsupported Activity (DPM/g) Total unsupported activity of 210Po in DPM/g after subtracting estimated supported 210Po activity estimated from 226Ra (0.48 DPM/g) measured on combined residual samples # excluded sample was excluded from the age model (YES/NO) # # Core ID Cumulative sediment depth (cm) Cumulative sediment depth (cm) with sand beds and ashes removed Lab code Type Material Dated 14C age (years B1950) 14C age error (years) calibrated date (year AD) min date (year AD) max date (year AD) 210Po Total Activity (DPM/g) 210Po error +/- 1 S.D. (DPM/g) 210Po Unsupported Activity (DPM/g) excluded # LAD10 0 0 NaN Core top sediment/water interface NaN NaN 2010.541667 2010.551667 2010.531667 NaN NaN NaN NO # LAD08 3 3 NaN 210Pb Bulk sediment NaN NaN 2006.51273036687 2006.64010500737 2006.38535572637 11.8072528529793 0.333341355484555 11.3272528529793 NO # LAD08 14 14 NaN 210Pb Bulk sediment NaN NaN 1996.40125994132 1996.93099605445 1995.87152382819 13.5909711012325 0.390587497684822 13.1109711012325 NO # LAD08 25 25 NaN 210Pb Bulk sediment NaN NaN 1985.29765722716 1986.73843644882 1983.85687800549 7.29642447670746 0.339362965063075 6.81642447670746 NO # LAD08 36.5 33.5 NaN 210Pb Bulk sediment NaN NaN 1972.5048400993 1975.36105664813 1969.64862355048 6.63061008728753 0.247041758729062 6.15061008728753 NO # LAD08 48.5 45.5 NaN 210Pb Bulk sediment NaN NaN 1961.15991608663 1966.37331383356 1955.9465183397 3.4760792126746 0.200086767926601 2.9960792126746 NO # LAD08 59.5 56.5 NaN 210Pb Bulk sediment NaN NaN 1954.15096051654 1961.54747346652 1946.75444756655 2.54549475480694 0.159210914688057 2.06549475480694 NO # LAD08 71 65 NaN 210Pb Bulk sediment NaN NaN 1946.25103687904 1956.85651551825 1935.64555823983 3.06953760172044 0.168333341223874 2.58953760172044 NO # LAD08 82.5 76.5 NaN 210Pb Bulk sediment NaN NaN 1936.61955973108 1953.27386997749 1919.96524948466 2.40127987404064 0.14098508507287 1.92127987404064 NO # LAD08 178.4 131.6 AA37293 14C Plant/wood 236 30 1714 1744 1684 NaN NaN NaN NO # LAD08 252.2 NaN OS-79520 14C Bulk sediment 620 25 NaN NaN NaN NaN NaN NaN YES # LAD08 326.7 227.7 AA37294 14C Plant/wood 412 40 1538 1578 1498 NaN NaN NaN NO # LAD08 371.1 249.7 OS-77312 14C Plant/wood 690 25 1260 1285 1235 NaN NaN NaN NO # LAD08 375.6 250.7 AA37295 14C Plant/wood 692 36 1258 1294 1222 NaN NaN NaN NO # LAD08 433.2 284.6 Beta-228346 14C plant/wood 830 40 1120 1160 1080 NaN NaN NaN NO # LAD08 565.8 341.9 OS-77313 14C Plant/wood 1190 25 760 785 735 NaN NaN NaN NO # #--------------------------------------- # 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) # ## 50yrwindow age,,,year Common Era,,paleolimnology;climate reconstructions,,,N,midpoint year in years AD of the 50 year moving window ## numfloods event layer,sediment,,count,,paleolimnology;climate reconstructions,,,N,number of floods in a 50-year moving window #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: 50yrwindow numfloods 915 5 916 5 917 5 918 5 919 5 920 5 921 4 922 4 923 4 924 4 925 4 926 4 927 3 928 3 929 3 930 3 931 3 932 3 933 3 934 3 935 3 936 3 937 3 938 3 939 3 940 3 941 3 942 3 943 3 944 3 945 3 946 3 947 4 948 4 949 3 950 3 951 3 952 3 953 3 954 3 955 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