# Lower Sermilik Lake, Southeast Greenland 7700 Year Geochemical 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/14511 # 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-14511.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/csvp-4f95 # # Science_Keywords: Little Ice Age (LIA) #-------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/greenland/sermilik2013bsi-noaa.txt # Data_Download_Description: NOAA Template File; Biogenic Silica Data # #-------------------- # Contribution_Date # Date: 2013-05-21 #-------------------- # File_Last_Modified_Date # Date: 2026-05-01 #-------------------- # Title # Study_Name: Lower Sermilik Lake, Southeast Greenland 7700 Year Geochemical Data #-------------------- # Investigators # Investigators: Davin, S.H.; Bradley, R.S.(https://orcid.org/0000-0002-4032-9519); Balascio, N.L.(https://orcid.org/0000-0001-7106-3541) #-------------------- # Description_Notes_and_Keywords # Description: A 7,700 year record of Holocene climatic and environmental variability in Sermilik Valley, located on Ammassalik Island, SE Greenland. This objective of this study is to determine the timing of major Holocene climate transitions as expressed in the physical, elemental, and geochemical parameters preserved in the 484 cm sediment record of Lower Sermilik Lake. Major transitions observed in this study include the deglaciation of Sermilik Valley, the onset and termination of the Holocene Climatic Optimum, the transition into neoglacial conditions, and the Little Ice Age. #-------------------- # Publication # Authors: Davin, S.H. # Journal_Name: Thesis # Published_Title: 7700 Years of Holocene Climatic Variability in Sermilik Valley, Southeast Greenland Inferred from Lake Sediments # Published_Date_or_Year: 2013 # Volume: # Pages: # Issue: # Report_Number: # DOI: # Online_Resource: https://scholarworks.umass.edu/cgi/viewcontent.cgi?article=2198&context=theses # Full_Citation: Davin, S.H. 2013. 7700 Years of Holocene Climatic Variability in Sermilik Valley, Southeast Greenland Inferred from Lake Sediments. Thesis, University of Massachusetts Amherst, 70 pp. # Abstract: During the latter half of the 20th century until present day there has been an unprecedented rise in global annual mean temperatures accompanied by rising sea levels and a decrease in Northern Hemisphere snow cover, which if it continues will lead to widespread disruption of climate patterns, ecosystems, and present-day landscapes. It is therefore of critical importance to establish an expanded network of paleoclimate records across the globe in order to better assesses how the global climate system has changed in the past, that we may create a metric by which to address modern change. Herein is presented a 7,700 years record of Holocene climatic and environmental variability in Sermilik Valley, located on Ammassalik Island, SE Greenland. This objective of this study is to determine the timing of major Holocene climate transitions as expressed in the physical, elemental, and geochemical parameters preserved in the 484 cm sediment record of Lower Sermilik Lake. Major transitions observed in this study include the deglaciation of Sermilik Valley, the onset and termination of the Holocene Climatic Optimum, the transition into neoglacial conditions, and the Little Ice Age. #-------------------- # Funding_Agency # Funding_Agency_Name: # Grant: #-------------------- # Site_Information # Site_Name: Lower Sermilik Lake # Location: Greenland # Northernmost_Latitude: 65.4 # Southernmost_Latitude: 65.4 # Easternmost_Longitude: -37.5 # Westernmost_Longitude: -37.5 # Elevation_m: 30 #-------------------- # Data_Collection # Collection_Name: Sermilik2013BioSi # First_Year: 7700 # Last_Year: 0 # Time_Unit: cal yr BP # Core_Length_m: 4.84 # Parameter_Keywords: geochemistry # 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: Eight radiocarbon dates from macrofossils. Dating was done at the Keck Carbon Cycle AMS Facility at the University of California Irvine. # Rejection_Rationale: # Reservoir_Method: # Calibration_Method: using Calib v.6.1 (Stuiver & Reimer,1993) and the IntCal09 data set (Reimer et al., 2009) # Age_Model_Method: a smooth spline with a smoothing factor of 0.3 as the weighted average of 10,000 iterations to the age-depth data using the Clam code (Blaauw 2010) for the statistical software R (R Development Core Team, 2010). # Missing_Values: NaN # Chronology_Table: # depth_cm age_14C_BP1950 age_14C_1s_yr calib_curve # 41.5 1130 20 IntCal09 # 67.5 1780 15 IntCal09 # 91.5 2145 15 IntCal09 # 94 2540 30 IntCal09 # 132 3010 15 IntCal09 # 168 3950 70 IntCal09 # 184 4690 35 IntCal09 # 229 5300 20 IntCal09 #-------------------- # 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, ## %bio-si biogenic silica,sediment,,percent,,paleolimnology,,,N, #-------------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: depth_cm %bio-si 1 26.2258 2 18.71 3 22.73 4 20.24 5 8.3351 6 19.33 7 16.81 7.5 17.31 8 13.29 9 17.59 10 19.54 11 19.12 12 14.37 13 11.18 14 5.76 14.5 2.2 15.5 9.74 16.5 17.5 17.5 19.83 21.5 10.1309 25 10.608 32.5 15.4863 37.5 12.176 40.5 9.0806 44 15.7438 49 8.4311 54.5 2.06 59 11.72 64 6.4094 67.5 11.813 71.5 9.0524 76.5 2.212 82 9.8945 87 8.6201 90 8.042 93 10.544 98 10.3004 103 5.5866 108 0.0197 110 11.2835 115 7.2488 120 6.1753 122.5 15.3346 127.5 11.2957 132.5 10.0788 138 8.4823 144 6.4216 149 12.5775 154 11.9452 159 14.4276 164 13.3422 168 16.7103 173 12.3567 178 18.8342 187.5 13.5366 198 13.7825 203 14.8883 212 16.47 217 20.43 222 17.48 227 2 233 17.34 238 24.83 243 22.68 249 23.88 254 21.22 259 19.84 264 18.95 269 14.23 273 15.04 279 10.6542 284 -2.178 289 0.6787 294 3.3703 299 0.4055 304 1.2876 314 5.8476