{"NOAAStudyId":"22253","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":"2017-06-14","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-22253.xml","doi":null,"earliestYearBP":5035,"earliestYearCE":-3085,"entryId":"noaa-lake-22253","funding":[],"investigators":"Berntsson, A.; Jansson, K.N.; Kylander, M.E.; De Vleeschouwer, F.; Bertrand, S.","mostRecentYearBP":-57,"mostRecentYearCE":2007,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/22253","originalSource":null,"publication":[{"abstract":"In this paper, we show the potential of combining multi-proxy analysis of lake sediments with catchment geomorphology to better understand palaeoenvironmental changes. Previous studies have suggested that alpine lakes in N Sweden may be highly sensitive to variations in catchment erosion and precipitation, and that this sensitivity may influence ecologically based reconstructions of past temperature changes. We analysed lake sediments covering the last 5100 years from the alpine Lake Vuoksjávrátje in NW Sweden in order to identify different erosional regimes in the lake catchment, sediment sources and lake sedimentary processes, which ultimately affect the palaeoecological record. The measured proxies include elemental geochemistry from XRF core scanning, grain size, sediment accumulation rates, fraction of terrestrial organic carbon and geomorphological mapping, supported by previously published chironomid and total organic carbon data. From the integrated results we identified time intervals when increased intensity of precipitation altered sedimentation and lake catchment erosional processes. The most prominent event occurred c. 2900 cal. a BP and is interpreted to be the result of excessive precipitation, possibly related to the climatic shift towards cooler and wetter conditions referred to as the 2.8 ka event.","author":{"name":"Annika Berntsson, Krister N. Jansson, Malin E. Kylander, Francois De Vleeschouwer and Sebastien Bertrand"},"citation":"Annika Berntsson, Krister N. Jansson, Malin E. Kylander, Francois De Vleeschouwer and Sebastien Bertrand. 2015. Late Holocene high precipitation events recorded in lake sediments and catchment geomorphology, Lake Vuoksjávrátje, NW Sweden. Boreas, 44(4), 676-692. doi: 10.1111/bor.12127","edition":null,"identifier":{"id":"10.1111/bor.12127","type":"doi","url":"http://dx.doi.org/10.1111/bor.12127"},"issue":"4","journal":"Boreas","pages":"676-692","pubRank":"1","pubYear":2015,"reportNumber":null,"title":"Late Holocene high precipitation events recorded in lake sediments and catchment geomorphology, Lake Vuoksjávrátje, NW Sweden","type":"publication","volume":"44"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"57251","geo":{"geoType":"Feature","geometry":{"coordinates":["66.249","15.718"],"type":"POINT"},"properties":{"easternmostLongitude":"15.718","maxElevationMeters":"850","minElevationMeters":"850","northernmostLatitude":"66.249","southernmostLatitude":"66.249","westernmostLongitude":"15.718"}},"locationName":"Continent>Europe>Northern Europe>Scandanavia>Sweden","mappable":"Y","paleoData":[{"NOAADataTableId":"33342","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/sweden/vuoksjavratje2015si-ti.txt","linkText":"Vuoksjávrátje Si/Ti Data","urlDescription":"Formatted Text Data File","variables":[{"cvAdditionalInfo":"mid of sample depth interval; Note that sediments between 185 and 207 were instantaneously deposited as the result of a flood event.","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"mid of sample depth; using AMS radiocarbon and Lead 210; Modelled ages - see Chronology","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"ITRAX core scanner data - see original publication for details on data handling.","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":"x-ray fluorescence spectroscopy","cvSeasonality":null,"cvShortName":null,"cvUnit":"count per second","cvWhat":"chemical composition>element or compound ratio>silicon/titanium"}]}],"dataTableName":"Vuoksjavratje2015SiTi","dataTableNotes":null,"earliestYear":4982,"earliestYearBP":4982,"earliestYearCE":-3032,"mostRecentYear":29,"mostRecentYearBP":29,"mostRecentYearCE":1921,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"33343","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>population abundance"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/sweden/vuoksjavratje2015chiron.txt","linkText":"Vuoksjávrátje Chironomid Data","urlDescription":"Formatted Text Data File","variables":[{"cvAdditionalInfo":"mid of sample depth interval; Note that sediments between 185 and 207 were instantaneously deposited as the result of a flood event.","cvDataType":"INSECT|PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"mid of sample depth; using AMS radiocarbon and Lead 210; Modelled ages - see Chronology","cvDataType":"INSECT|PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"Rheophilic taxa (indicating fluvial erosion); For classification used see original publication.","cvDataType":"INSECT|PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"biological material>organism>insect>insect index>midge index"},{"cvAdditionalInfo":"Terrestrial and semi-terrestrial taxa (indicating terrestrial erosion/sheetflow erosion); For classification used see original publication.","cvDataType":"INSECT|PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"biological material>organism>insect>insect index>midge index"},{"cvAdditionalInfo":"Combined rheophilic and terrestrial/semi-terrestrial taxa; For classification used see original publication.","cvDataType":"INSECT|PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"biological material>organism>insect>insect index>midge index"}]}],"dataTableName":"Vuoksjavratje2015Chiron","dataTableNotes":null,"earliestYear":5035,"earliestYearBP":5035,"earliestYearCE":-3085,"mostRecentYear":-57,"mostRecentYearBP":-57,"mostRecentYearCE":2007,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Vuoksjávrátje"}],"studyCode":null,"studyName":"Vuoksjávrátje, Sweden 5100 Year Chironomid and Geochemical Data","studyNotes":null,"version":"1.0","xmlId":"20295"}