{"NOAAStudyId":"5448","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2006-03-01","dataPublisher":"NOAA","dataType":"PALEOLIMNOLOGY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/lake","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-5448.xml","doi":null,"earliestYearBP":20000,"earliestYearCE":-18050,"entryId":"noaa-lake-5448","funding":[],"investigators":"Bakke, J.; Olaf Dahl, S.; Paasche, O.; Lovlie, R.; Nesje, A.","mostRecentYearBP":0,"mostRecentYearCE":1950,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/5448","originalSource":null,"publication":[{"abstract":"Based on lacustrine and morpho-stratigraphical evidence from Lyngen in Troms, northern Norway, 13 marginal moraines have been mapped in front of Lenangsbreene in Strupskardet. Moraines M1-M13 are inferred to represent glacier halts or advance/readvance taking place during the Lateglacial and Holocene. The presence of collapse depressions suggests that some of them were ice cored (M1-M3). A chronological framework, taking into account a combination of former shorelines and related glacier-meltwater channels, lichenometry and AMS radiocarbon-dated lacustrine sediments spanning the last 20,000 cal. yr BP, has been established. The distal glacier-fed lake Aspvatnet was isolated from the sea c.10,300 cal. yr BP, and the lacustrine sediments have been investigated by use of loss-on-ignition (LOI) magnetic susceptibility, water content, wet and dry bulk density (DBD), and the magnetic parameters anhysteretic remanent magnetization (ARM) and saturation remanent magnetization (SIRM). There is, in general, good agreement between physical sediment parameters and magnetic parameters. DBD, a combination of medium and fine silt and the two statistical parameters 'sorting' and 'mean' have been used to construct a high-resolution \r\nglacier-fluctuation curve for the last 3800 cal. yr BP. Based on an accumulation-area ratio (AAR) of 0.6 and an ablation-accumulation balance ratio (ABR) approach, a continuous temperature-precipitation-wind equilibrium-line altitude (TPW-ELA) curve for the last 20,000 cal. yr BP has been constructed. Using an established exponential relationship between mean ablation-season temperature and mean annual solid precipitation at the ELA of Norwegian glaciers, variations in mean winter precipitation (snow) are quantified using an independent proxy for summer temperature. Mean annual winter precipitation varied from 500 to 5000 mm \r\nwater equivalent, and on average, Holocene estimates are c. 50% higher than similar figures from the Lateglacial. The two driest periods occurred during Heinrich events 1 (H1) (17,500-16,500) and 0 (H0) (13,000-12,200), whereas freshwater pulses to the North Atlantic had apparently no systematic impact on mean winter precipitation.  Based on the winter precipitation curve from Lyngen, the atmospheric circulation responded to the sea surface temperature (SST) lowering associated with H1 and H0. The dry and cold climate during the events led to formation of talus-derived rock glaciers at sea level.","author":{"name":"Bakke, J., S. Olaf Dahl, O. Paasche, R. Lovlie, and A. Nesje."},"citation":"Bakke, J., S. Olaf Dahl, O. Paasche, R. Lovlie, and A. Nesje. 2005. Glacier fluctuations, equilibrium-line altitudes and palaeoclimate in Lyngen, northern Norway, during the Lateglacial and Holocene. The Holocene, 15(4). ","edition":null,"identifier":null,"issue":"4","journal":"The Holocene","pages":null,"pubRank":"1","pubYear":2005,"reportNumber":null,"title":"Glacier fluctuations, equilibrium-line altitudes and palaeoclimate in Lyngen, northern Norway, during the Lateglacial and Holocene","type":"publication","volume":"15"}],"reconstruction":"Y","scienceKeywords":["Glaciers and Ice Sheets Reconstruction","PAGES Arctic 2k","Precipitation Reconstruction","PAGES 2k Network"],"site":[{"NOAASiteId":"8884","geo":{"geoType":"Feature","geometry":{"coordinates":["69.73","19.98"],"type":"POINT"},"properties":{"easternmostLongitude":"19.98","maxElevationMeters":"35","minElevationMeters":"35","northernmostLatitude":"69.73","southernmostLatitude":"69.73","westernmostLongitude":"19.98"}},"locationName":"Continent>Europe>Northern Europe>Scandanavia>Norway","mappable":"Y","paleoData":[{"NOAADataTableId":"7202","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical 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susceptibility>mass magnetic susceptibility"},{"cvAdditionalInfo":"x10-5 units","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"ampere per meter per kilogram","cvWhat":"magnetic property>magnetic moments>remanent magnetization>anhysteretic remanent magnetization"},{"cvAdditionalInfo":"x10-5 units","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"ampere per meter per kilogram","cvWhat":"magnetic property>magnetic moments>remanent magnetization>isothermal remanent magnetization>saturation isothermal remanent magnetization"},{"cvAdditionalInfo":"anhysteretic remanent magnetization/saturated isothermal remanent magnetization","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"magnetic property>magnetic ratios>anhysteretic remanent magnetization/saturation isothermal remanent magnetization"},{"cvAdditionalInfo":"0.1","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"magnetic property>magnetic ratios>S-ratio"},{"cvAdditionalInfo":"0.3","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"magnetic property>magnetic ratios>S-ratio"}]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/norway/aspvatnet2005.xls","linkText":"aspvatnet2005.xls","urlDescription":"Data","variables":[]}],"dataTableName":"Aspvatnet Core ASPVAT","dataTableNotes":null,"earliestYear":20000,"earliestYearBP":20000,"earliestYearCE":-18050,"mostRecentYear":0,"mostRecentYearBP":0,"mostRecentYearCE":1950,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Aspvatnet"}],"studyCode":null,"studyName":"Northern Norway Aspvatnet Glacial Lake 20,000 Year Sediment Data","studyNotes":"Sediment data from Aspvatnet glacial lake, Lyngen Peninsula, \nTroms, northern Norway.","version":"1.0","xmlId":"634"}