# Nebraska Sand Hills Lake Level Data over the last 4000 years #----------------------------------------------------------------------- # 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 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: https://www.ncdc.noaa.gov/paleo/study/23075 # Online_Resource_Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/noaa-templates/data-version-1.0.0/RoundLake.Schmieder.2011.txt # Online_Resource_Description: This file. NOAA WDS Paleo formatted metadata and data for version 1.0.0 of this dataset. # # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/NAm2kHydro-2017/data-version-1.0.0/RoundLake.Schmieder.2011.lpd # Online_Resource_Description: Linked Paleo Data (LiPD) formatted file containing the same metadata and data as this file, for version 1.0.0 of this dataset. # # Original_Source_URL: this study # Description/Documentation lines begin with # # Data lines have no # # # Archive: Lake Level # Parameter_Keywords: # Dataset_DOI: # #------------------ # Contribution_Date # Date: 2017-11-15 #------------------ # File_Last_Modified_Date # Modified_Date: 2017-11-15 #------------------ # Title # Study_Name: Nebraska Sand Hills Lake Level Data over the last 4000 years #------------------ # Investigators # Investigators: Schmieder, J.; Fritz, S.C.; Swinehart, J.B.; Shinneman, A.L.C.; Wolfe, A.P.; Miller, G.; Daniels, N.; Jacobs, K.C.; Grimm, E.C. #------------------ # Description_Notes_and_Keywords # Description: #------------------ # Publication # Authors: Schmieder, J.; Fritz, S.C.; Swinehart, J.B.; Shinneman, A.L.C.; Wolfe, A.P.; Miller, G.; Daniels, N.; Jacobs, K.C.; Grimm, E.C. # Published_Date_or_Year: 2011 # Published_Title: A regional-scale climate reconstruction of the last 4000 years from lakes in the Nebraska Sand Hills, USA # Journal_Name: Quaternary Science Reviews # Volume: 30 # Edition: # Issue: 13-14 # Pages: 1797-1812 # Report: # DOI: 10.1016/j.quascirev.2011.04.011 # Online_Resource: # Full_Citation: # Abstract: High-resolution paleohydrological reconstructions were carried out in five shallow lakes in the Nebraska Sand Hills across an east–west transect in order to 1) determine whether long-term droughts of the past 4000 years were spatially and temporally coherent across the region, 2) distinguish local variation in climate or hydrology from regional patterns of change, and 3) compare the paleolimnological results with the existing dune-inferred drought records. Diatom- inferred lake-level was reconstructed for all sites and compared with other regional records. Alterations between high and low lake-levels were frequent during the past 4000 years, which suggests that shifts between dry and wet periods were prevalent across the Sand Hills. Extended multi-decadal to centennial-scale droughts were more common prior to 2000 years BP, while the last two millennia were hydrologically more variable and climate conditions alternated on shorter timescales. Despite some discrepancies among the five records, the paleohydrological reconstructions refine the Holocene drought history of the Nebraska Sand Hills, particularly between ~2200 and 4000 cal a BP. Many of the observed drought events are contemporaneous with severe droughts documented at sites in the northern Great Plains and Rocky Mountains, lending support for the severity and regional significance of these events in western North America. #------------------ # Funding_Agency # Funding_Agency_Name: # Grant: #------------------ # Site_Information # Site_Name: Round Lake # Location: Nebraska # Country: # Northernmost_Latitude: 48.42 # Southernmost_Latitude: 48.42 # Easternmost_Longitude: -101.5 # Westernmost_Longitude: -101.5 # Elevation: 1064 #------------------ # Data_Collection # Collection_Name: RoundLake.Schmieder.2011 # Earliest_Year: 2484.0 # Most_Recent_Year: 1.0 # Time_Unit: BP # Core_Length: # Notes: #------------------ # Species # Species_Name: # Species_Code: # Common_Name: #------------------ # Chronology_Section # Chronology: # depth Lab x_ Material age error d13C FractionModern error1 YBPCal x1sigmaLow x1sigmaHigh # 40.0 AA 37942.0 Seed 286.0 51.0 -24.6 0.965 0.006 414.0 485.0 343.0 # 98.0 AA 37933.0 Seed 1171.0 36.0 -13.6 0.864 0.004 1152.0 1195.0 1108.0 # 108.0 AA 37934.0 Seed 1414.0 34.0 -13.6 0.839 0.004 1365.0 1386.0 1344.0 # 124.0 CURL 11303.0 Charcoal 1470.0 85.0 -24.9 0.833 0.009 1408.0 1473.0 1343.0 # 125.0 CURL 11570.0 Seed 1490.0 35.0 -24.9 0.831 0.004 1424.0 1461.0 1387.0 # 137.0 AA 37931.0 Seed 1804.0 40.0 -26.1 0.799 0.004 1809.0 1869.0 1748.0 # 159.0 AA 37935.0 Seed 2183.0 35.0 -26.1 0.762 0.003 2267.0 2357.0 2177.0 # 190.0 CURL 11129.0 Aquatic plant 2430.0 35.0 -25.9 0.739 0.003 2585.0 2758.0 2411.0 # #------------------ # Variables # # Data variables follow that are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components ( 10 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data, additional_information) # ## year age, ,,year CE, , , ,,N, ## DI_lake_depth lake level,,,m, , lake level;climate reconstruction, ,,N, diatom-inferred lake level ## age age, ,,calendar years before present, ,, ,,N, ## depth depth, ,,cm, , , ,,N, ## lake_Z_score lake level,,,standard deviation unit, , lake level;climate reconstruction, ,,N,Z-score; 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