# Liverpool Land, East Greenland Holocene Lake Sediment LOI Data #---------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #---------------------------------------------------- # 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 # # Data lines have no # # # NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/15229 # 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-lake-15229.json # Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata. # # Data_Type: Paleolimnology # # Dataset_DOI: 10.25921/cddk-se65 # # Science_Keywords: #-------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/greenland/liverpool2014emrd10-1b-1n-noaa.txt # Data_Download_Description: NOAA Template File; Loss-on-Ignition Data # #-------------------- # Contribution_Date # Date: 2013-10-23 #-------------------- # File_Last_Modified_Date # Date: 2024-06-06 #-------------------- # Title # Study_Name: Liverpool Land, East Greenland Holocene Lake Sediment LOI Data #-------------------- # Investigators # Investigators: Lusas, A.R.; Hall, B.L.; Lowell, T.V.(https://orcid.org/0000-0001-7826-0636); Kelly, M.A.(https://orcid.org/0000-0001-8163-3907); Bennike, O.(https://orcid.org/0000-0002-5486-9946); Levy, L.B.(https://orcid.org/0000-0002-4617-8299); Honsaker, W. #-------------------- # Description_Notes_and_Keywords # Description: Loss-on-ignition data (550C burn) for 4 Liverpool Land, East Greenland, sediment cores #-------------------- # Publication # Authors: Amanda R. Lusas, Brenda L. Hall, Thomas V. Lowell, Meredith A. Kelly, Ole Bennike, Laura B. Levy, William Honsaker # Journal_Name: Journal of Paleolimnology # Published_Title: Holocene climate and environmental history of East Greenland inferred from lake sediments # Published_Date_or_Year: 2017 # Volume: 57 # Pages: 321-341 # Issue: 4 # Report_Number: # DOI: 10.1007/s10933-017-9951-5 # Full_Citation: # Abstract: Prediction of future Arctic climate and environmental changes, as well as associated ice-sheet behavior, requires placing present-day warming and reduced ice extent into a long-term context. Here we present a record of Holocene climate and glacier fluctuations inferred from the paleolimnology of small lakes near Istorvet ice cap in East Greenland. Calibrated radiocarbon dates of organic remains indicate deglaciation of the region before ~10,500 years BP, after which time the ice cap receded rapidly to a position similar to or less extensive than present, and lake sediments shifted from glacio-lacustrine clay to relatively organic-rich gyttja. The lack of glacio-lacustrine sediments throughout most of the record suggests that the ice cap was similar to or smaller than present throughout most of the Holocene. This restricted ice extent suggests that climate was similar to or warmer than present, in keeping with other records from Greenland that indicate a warm early and middle Holocene. Middle Holocene magnetic susceptibility oscillations, with a ~200-year frequency in one of the lakes, may relate to solar influence on local catchment processes. Following thousands of years of restricted extent, Istorvet ice cap advanced to within 365 m of its late Holocene limit at ~AD 1150. Variability in the timing of glacial and climate fluctuations, as well as of sediment organic content changes among East Greenland lacustrine records, may be a consequence of local factors, such as elevation, continentality, water depth, turbidity, and seabirds, and highlights the need for a detailed spatial array of datasets to address questions about Holocene climate change. #-------------------- # Authors: Lowell, Thomas V., Brenda L. Hall, Meredith A. Kelly, Ole Bennike, Amanda R. Lusas, William Honsaker, Colby A. Smith, Laura B. Levy, Scott Travis, and George H. Denton # Journal_Name: Quaternary Science Reviews # Published_Title: Late Holocene expansion of Istorvet ice cap, Liverpool Land, east Greenland # Published_Date_or_Year: 2013 # Volume: 63 # Pages: 128-140 # Issue: # Report_Number: # DOI: 10.1016/j.quascirev.2012.11.012 # Full_Citation: # Abstract: The Greenland Ice Sheet is undergoing dynamic changes that will have global implications if they continue into the future. In this regard, an understanding of how the ice sheet responded to past climate changes affords a baseline for anticipating future behavior. Small, independent ice caps adjacent to the Greenland Ice Sheet (hereinafter called "local ice caps") are sensitive indicators of the response of Greenland ice-marginal zones to climate change. Therefore, we reconstructed late Holocene ice-marginal fluctuations of the local Istorvet ice cap in east Greenland, using radiocarbon dates of subfossil plants, 10Be dates of surface boulders, and analyses of sediment cores from both threshold and control lakes. During the last termination, the Istorvet ice cap had retreated close to its maximum Holocene position by ~11,730 cal yr BP. Radiocarbon dates of subfossil plants exposed by recent recession of the ice margin indicate that the Istorvet cap was smaller than at present from AD 200 to AD 1025. Sediments from a threshold lake show no glacial input until the ice cap advanced to within 365 m of its Holocene maximum position by ~AD 1150. Thereafter the ice cap remained at or close to this position until at least AD 1660. The timing of this, the most extensive of the Holocene, expansion is similar to that recorded at some glaciers in the Alps and in southern Alaska. However, in contrast to these other regions, the expansion in east Greenland at AD 1150 appears to have been very close to, if not at, a maximum Holocene value. Comparison of the Istorvet ice-cap fluctuations with Holocene glacier extents in Southern Hemisphere middle-to-high latitude locations on the Antarctic Peninsula and in the Andes and the Southern Alps suggests an out-of-phase relationship. If correct, this pattern supports the hypothesis that a bipolar see-saw of oceanic and/or atmospheric circulation during the Holocene produced asynchronous glacier response at some localities in the two polar hemispheres. #-------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: #-------------------- # Site_Information # Site_Name: Emerald Pond # Location: Greenland # Northernmost_Latitude: 70.8839 # Southernmost_Latitude: 70.8839 # Easternmost_Longitude: -22.2759 # Westernmost_Longitude: -22.2759 # Elevation_m: 419 #-------------------- # Data_Collection # Collection_Name: EMRD10-1B-1N-2014LOI # First_Year: 9000 # Last_Year: 0 # Time_Unit: cal yr BP # Core_Length_m: # Parameter_Keywords: physical properties # Notes: #-------------------- # Chronology_Information # Chronology: Radiocarbon # Chronology_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/templates/noaa-wds-paleo-14c-terms.csv # Chronology_Download_Description: Radiocarbon terms and definitions. # Chronology_Notes: Radiocarbon data for EMRD10-1B-1N. Contributors: Brenda Hall, Thomas Lowell, Meredith Kelly, Amanda Lusas. Location: Emerald Pond, East Greenland # Rejection_Rationale: # Reservoir_Method: Bedrock in the area is dominated by monzonite and quartz monzonite (Bengaard and Henriksen 1982), hardwater dating effects in the lakes are probably negligible. In addition, the lakes are shallow, seasonally ice-free, well-mixed, and are unlikely to have a radiocarbon reservoir effect. As a test of these assumptions, we dated surface aquatic algae in one of the lakes (Emerald Lake), and they yielded a modern age. # Calibration_Method: CALIB and the INTCAL13 dataset (Reimer et al. 2013). # Age_Model_Method: # Missing_Values: NaN # Chronology_Table: # core_id lab_code depth_cm material_dated age_14C_BP1950 age_14C_1s_yr age_calib_range2s_BP1950 calib_curve # EMRD-1B-1N OS-88266 0 algae NaN NaN NaN IntCal13 # EMRD-1B-1N OS-88347 68.5 insect, terrestrial macrofossils 5120 30 5752-5827 (50%, 5790±40), 5859-5929 (50%, 5890±40) IntCal13 #-------------------- # 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. # # 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) # ## depth_cm depth,,,centimeter,,paleolimnology,,,N, ## loi550C organic matter,sediment,,weight percent,,paleolimnology,,loss on ignition,N,loss on ignition at 550 degrees C #-------------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: depth_cm loi550C 15 4.497 17 5.256 19 4.031 21 12.072 23 15.789 25 17.220 27 14.213 29 12.067 31 11.329 33 11.156 35 22.938 37 10.513 39 14.472 41 16.811 43 13.710 45 15.753 47 17.631 49 15.688 51 18.049 53 20.319 55 22.362 57 18.905 59 20.288 61 19.786 63 19.121 65 20.324 67 21.610 69 26.140 71 18.264 73 19.199 75 18.230 77 17.746 79 12.981 81 12.471 83 10.929 85 10.083 87 7.906514172