# 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/liverpool2014snwb10-1a-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: Snowbank Pond # Location: Greenland # Northernmost_Latitude: 70.8861 # Southernmost_Latitude: 70.8861 # Easternmost_Longitude: -22.27885 # Westernmost_Longitude: -22.27885 # Elevation_m: 447 #-------------------- # Data_Collection # Collection_Name: SNWB10-1A-2014LOI # First_Year: 10000 # 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 SNWB10-1A. Contributors: Brenda Hall, Thomas Lowell, Meredith Kelly, Amanda Lusas. Location: Snowbank 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 # SNWB-1A-1L OS-88274 60.5 aquatic moss 1240 25 1081-1114 (12%, 1098±16), 1118-1263 (88%, 1191±72) IntCal13 # SNWB-1A-1L OS-88212 71 aquatic moss 2060 25 1967-2073 (78%, 2020±53), 2076-2114 (17%, 2095±19) IntCal13 # SNWB-1A-2L OS-88273 136 aquatic moss 5120 35 5749-5830 (51%, 5790±40), 5844-5933 (49%, 5889±44) IntCal13 # SNWB-1A-2L OS-88275 148 aquatic moss 5770 30 6493-6652 (100%, 6573±79) IntCal13 # SNWB-1A-2L OS-88279 162 aquatic moss 6530 35 7415-7509 (94%, 7462±47) IntCal13 # SNWB-1A-3L OS-86691 205 aquatic moss 8570 45 9478-9624 (100%, 9551±73) 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 5 40.51282051 10 39.29024081 15 34.18308227 21 35.2402746 26 36.56286044 31 36.73469388 36 37.53056235 41 35.61643836 46 33.63821138 51 25.76112412 56 48.47605225 62 37.8021978 67 35.81235698 72 36.9612069 77 36.51498335 82 36.64804469 84 35.39393939 86 41.46023468 88 39.37753721 90 43.62519201 92 35.62176166 94 40.41297935 96 39.65785381 98 39.90536278 100 37.85822021 102 34.90566038 104 47.9704797 106 43.62068966 108 35.06743738 110 37.36842105 112 33.03571429 114 37.32718894 116 45.94594595 120 34.04710921 122 31.31672598 124 39.37947494 126 37.62626263 128 26.84210526 130 31.84818482 132 26.27511592 134 32.50728863 136 36.23188406 138 30.41543027 140 36.55413271 142 39.43870015 144 44.11764706 146 38.57566766 148 35.39019964 150 39.41441441 152 34.48275862 154 33.58348968 156 22.08588957 158 26.75675676 160 20.22222222 162 18.32760596 164 15.63296517 166 15.90038314 168 16.31097561 170 16.55277145 172 13.11975591 174 13.20030698 176 13.12741313 178 13.09707242 180 13.20474777 182 15.28497409 184 1.302844988 186 3.153037683 188 1.224489796 190 2.702177294 192 2.394366197 194 1.835453228