# 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/sermilik2013ms-noaa.txt # Data_Download_Description: NOAA Template File; Magnetic Susceptibility 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: Sermilik2013MS # First_Year: 7700 # Last_Year: 0 # Time_Unit: cal yr BP # Core_Length_m: 4.84 # Parameter_Keywords: magnetic susceptibility # 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, ## susc_si volume magnetic susceptibility,sediment,,dimensionless (SI system),,paleolimnology,,,N,x10-6 units #-------------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: depth_cm susc_si 0 21 0.5 98 1 240 1.5 272 2 99 2.5 75 3 85 3.5 89 4 86 4.5 87 5 107 5.5 119 6 132 6.5 148 7 165 7.5 151 8 30.21 8.5 48.73 9 101.51 9.5 94.51 10 121.04 10.5 109.15 11 95.46 11.5 94.35 12 129.67 12.5 169.35 13 221.92 13.5 242.02 14 204.24 14.5 159.25 15 143.72 15.5 120.51 16 112.2 16.5 115.73 17 125.41 17.5 127.67 18 140.04 18.5 140.35 19 139.88 19.5 142.67 20 243.66 20.5 285.34 21 274.71 21.5 258.97 22 286.65 22.5 226.76 23 239.5 23.5 173.61 24 166.51 24.5 189.71 25 194.71 25.5 227.03 26 188.98 26.5 205.14 27 225.4 27.5 234.76 28 287.65 28.5 152.77 29 157.24 29.5 154.88 30 190.82 30.5 225.4 31 194.61 31.5 242.55 32 300.12 32.5 156.3 33 107.25 33.5 100.41 34 122.83 34.5 197.77 35 173.67 35.5 112.04 36 99.25 36.5 99.41 37 85.84 37.5 80.2 38 102.31 38.5 117.73 39 117.72 39.5 131.93 40 156.51 40.5 292.7 41 239.13 41.5 315.12 42 236.87 42.5 129.61 43 178.14 43.5 254.92 44 168.45 44.5 103.41 45 124.77 45.5 145.93 46 131.56 46.5 111.88 47 142.51 47.5 146.56 48 118.62 48.5 106.15 49 116.3 49.5 153.24 50 171.98 50.5 180.98 51 149.77 51.5 122.51 52 126.09 52.5 144.46 53 191.08 53.5 239.13 54 168.93 54.5 133.72 55 127.09 55.5 135.04 56 221.14 56.5 255.66 57 132.14 57.5 169.2 58 182.93 58.5 169.3 59 159.03 59.5 224.08 60 180.77 60.5 148.2 61 125.88 61.5 118.36 62 156.04 62.5 147.19 63 114.78 63.5 126.46 64 254.5 64.5 224.14 65 121.04 65.5 92.1 66 111.31 66.5 175.98 67 107.36 67.5 118.41 68 203.56 68.5 166.35 69 96.41 69.5 76.26 70 89.2 70.5 112.2 71 83.99 71.5 89.89 72 76.2 72.5 80.36 73 80.31 73.5 82.15 74 98.89 74.5 75.78 75 75.1 75.5 91.15 76 90.84 76.5 125.25 77 147.46 77.5 134.51 78 192.93 78.5 160.98 79 102.31 79.5 121.72 80 164.93 80.5 183.03 81 150.25 81.5 116.89 82 157.93 82.5 190.24 83 166.88 83.5 310.08 84 240.93 84.5 316.86 85 293.92 85.5 231.66 86 266.45 86.5 215.34 87 252.55 87.5 218.19 88 336.96 88.5 155.93 89 170.45 89.5 232.61 90 277.6 90.5 149.51 91 173.88 91.5 224.81 92 281.34 92.5 304.07 93 193.45 93.5 113.88 94 126.46 94.5 170.61 95 194.51 95.5 242.5 96 288.97 96.5 397.54 97 233.82 97.5 329.81 98 384.64 98.5 285.76 99 268.55 99.5 145.88 100 186.46 100.5 188.77 101 143.46 101.5 160.04 102 179.98 102.5 165.72 103 179.09 103.5 193.3 104 213.82 104.5 231.61 105 230.45 105.5 343.33 106 170.09 106.5 171.03 107 199.72 107.5 213.87 108 154.25 108.5 178.82 109 84.89 109.5 208.98 110 157.35 110.5 151.14 111 182.88 111.5 161.93 112 169.67 112.5 142.99 113 124.88 113.5 142.2 114 188.45 114.5 252.39 115 311.55 115.5 234.19 116 167.09 116.5 180.77 117 332.92 117.5 382.38 118 242.4 118.5 145.57 119 169.77 119.5 201.45 120 209.51 120.5 223.66 121 271.45 121.5 215.66 122 186.77 122.5 231.29 123 300.07 123.5 233.6 124 204.24 124.5 164.35 125 178.46 125.5 157.4 126 188.19 126.5 233.66 127 148.62 127.5 129.25 128 142.77 128.5 149.46 129 187.46 129.5 179.98 130 158.72 130.5 153.93 131 169.09 131.5 243.24 132 208.87 132.5 214.14 133 266.18 133.5 262.44 134 294.23 134.5 191.56 135 157.4 135.5 133.3 136 139.46 136.5 148.77 137 182.61 137.5 238.55 138 192.04 138.5 180.45 139 149.3 139.5 178.04 140 205.3 140.5 186.19 141 277.23 141.5 140.46 142 144.88 142.5 174.71 143 153.4 143.5 140.09 144 142.88 144.5 241.24 145 287.55 145.5 161.82 146 132.93 146.5 148.88 147 151.19 147.5 117.78 148 135.04 148.5 125.99 149 194.51 149.5 165.14 150 192.29 150.5 273.5 151 142.56 151.5 103.51 152 129.35 152.5 183.61 153 277.18 153.5 240.76 154 484.48 154.5 343.54 155 159.57 155.5 137.25 156 177.93 156.5 210.82 157 241.24 157.5 164.72 158 162.25 158.5 159.62 159 188.77 159.5 135.35 160 125.72 160.5 154.56 161 161.93 161.5 150.25 162 169.72 162.5 132.04 163 128.36 163.5 138.09 164 158.82 164.5 145.88 165 89.94 165.5 92.46 166 141.04 166.5 255.92 167 131.61 167.5 140.2 168 148.51 168.5 185.71 169 185.82 169.5 179.87 170 142.09 170.5 138.57 171 146.46 171.5 146.51 172 232.29 172.5 276.6 173 324.91 173.5 317.81 174 170.56 174.5 128.14 175 134.3 175.5 138.04 176 149.56 176.5 176.08 177 179.03 177.5 225.66 178 327.23 178.5 144.77 179 110.62 179.5 121.09 180 170.14 180.5 164.09 181 169.82 181.5 169.4 182 128.83 182.5 79.15 183 67.57 183.5 64.73 184 96.15 184.5 55.05 185 46.05 185.5 58.21 186 59.52 186.5 96.73 187 192.4 187.5 197.4 188 214.5 188.5 224.45 189 256.87 189.5 202.92 190 185.51 190.5 236.87 191 210.4 191.5 284.81 192 258.6 192.5 248.76 193 291.6 193.5 173.24 194 158.93 194.5 170.3 195 227.98 195.5 122.46 196 118.72 196.5 150.67 197 91.15 197.5 64.52 198 88.72 198.5 155.35 199 262.23 199.5 150.04 200 97.67 200.5 183.14 201 170.98 201.5 215.08 202 139.67 202.5 130.04 203 155.3 203.5 287.97 204 164.04 204.5 224.45 205 159.93 205.5 112.25 206 125.25 206.5 176.19 207 175.45 207.5 123.09 208 104.94 208.5 102.25 209 179.09 209.5 265.34 210 292.6 210.5 265.5 211 126.4 211.5 87.52 212 82.83 212.5 95.57 213 121.77 213.5 164.3 214 105.47 214.5 124.41 215 203.93 215.5 121.36 216 87.68 216.5 80.62 217 87.73 217.5 104.73 218 144.88 218.5 153.77 219 188.72 219.5 187.56 220 175.4 220.5 234.14 221 153.51 221.5 76.57 222 60.94 222.5 60.68 223 80.62 223.5 158.09 224 349.86 224.5 236.13 225 134.62 225.5 120.83 226 128.51 226.5 96.46 227 76.94 227.5 82.94 228 82.36 228.5 105.99 229 120.83 229.5 99.36 230 77.99 230.5 99.46 231 81.94 231.5 78.1 232 65.2 232.5 87.15 233 223.66 233.5 132.3 234 124.41 234.5 135.19 235 150.35 235.5 268.02 236 251.13 236.5 237 237.5 238 98.78 238.5 99.09 239 99.2 239.5 99.15 240 97.1 240.5 190.24 241 128.41 241.5 131.88 242 212.4 242.5 104.15 243 119.3 243.5 102.1 244 97.2 244.5 103.57 245 108.94 245.5 82.15 246 152.67 246.5 92.57 247 95.15 247.5 131.14 248 129.3 248.5 153.14 249 90.41 249.5 75.99 250 86.89 250.5 68.31 251 74.62 251.5 110.62 252 187.82 252.5 115.46 253 76.68 253.5 103.31 254 79.36 254.5 90.46 255 137.93 255.5 112.46 256 189.4 256.5 145.35 257 79.15 257.5 47.31 258 58.99 258.5 51.99 259 63.68 259.5 100.83 260 89.73 260.5 95.46 261 109.15 261.5 80.67 262 98.04 262.5 116.36 263 126.52 263.5 97.78 264 105.78 264.5 116.31 265 104.15 265.5 91.2 266 89.04 266.5 105.15 267 101.67 267.5 119.78 268 103.41 268.5 83.2 269 76.94 269.5 98.83 270 59.31 270.5 55.31 271 46.84 271.5 26.73 272 41.15 272.5 29.15 273 11.68 273.5 11.79 274 16.89 274.5 30.74 275 41.15 275.5 43.21 276 31.84 276.5 44.47 277 58.63 277.5 76.67 278 135.2 278.5 176.3 279 174.98 279.5 161.19 280 116.19 280.5 127.88 281 104.25 281.5 105.67 282 101.15 282.5 283 283.5 175 284 209 284.5 243 285 274 285.5 304 286 332 286.5 359 287 384 287.5 406 288 423 288.5 435 289 445 289.5 450 290 452 290.5 453 291 452 291.5 452 292 451 292.5 450 293 449 293.5 446 294 442 294.5 439 295 435 295.5 430 296 426 296.5 418 297 407 297.5 392 298 373 298.5 349 299 324 299.5 301 300 284 300.5 274 301 268 301.5 271 302 279 302.5 289 303 302 303.5 318 304 336 304.5 354 305 371 305.5 381 306 383 306.5 378 307 368 307.5 357 308 348 308.5 341 309 338 309.5 341 310 350 310.5 365 311 385 311.5 406 312 424 312.5 437 313 445 313.5 448 314 449 314.5 447 315 448 315.5 450 316 453 316.5 455 317 458 317.5 462 318 467 318.5 473 319 478 319.5 485 320 495 320.5 510 321 532 321.5 678 322 678 322.5 682 323 693 323.5 716 324 752 324.5 799 325 858 325.5 926 326 1003 326.5 1087 327 1171 327.5 1246 328 1303 328.5 1331 329 1326 329.5 1292 330 1242 330.5 1187 331 1136 331.5 1096 332 1066 332.5 1044 333 1028 333.5 1015 334 1005 334.5 998 335 990 335.5 984 336 974 336.5 965 337 958 337.5 949 338 939 338.5 927 339 912 339.5 894 340 875 340.5 855 341 834 341.5 815 342 795 342.5 774 343 751 343.5 724 344 691 344.5 656 345 622 345.5 587 346 551 346.5 510