{"NOAAStudyId":"13666","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":"2012-12-20","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-13666.xml","doi":null,"earliestYearBP":11104,"earliestYearCE":-9154,"entryId":"noaa-lake-13666","funding":[{"fundingAgency":"European Union","fundingGrant":"HPRI-2001-00124"},{"fundingAgency":"French National Institute of Universe Sciences (INSU)","fundingGrant":"Eclipse Aphrodyte II "},{"fundingAgency":"ANR France","fundingGrant":"BLAN07-2_204489"}],"investigators":"Arnaud, F.; Révillon, S.; Debret, M.; Revel, M.; Chapron, E.; Jacob, J.; Giguet-Covex, C.; Poulenard, J.; Magny, M.","mostRecentYearBP":-47,"mostRecentYearCE":1997,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/13666","originalSource":null,"publication":[{"abstract":"Two well-dated ca Holocene-long sedimentary sequences from deepest parts of Lake Bourget provide new insights onto the evolution of erosion patterns at a regional scale in NW European Alps. The combination of high resolution geochemistry - XRF core scanning, calibrated by 150 punctual measurements - and isotope geochemistry (ENd) of the terrigenous fraction permitted the reconstruction not only of the intensity, but also the type (physical erosion vs. chemical weathering) and the location (Prealpine massifs vs. High Crystalline massifs) of dominant erosion processes. Those data point the persistency of weak erosion fluxes from 9600 to 5500 cal. BP due both to a dry climate and the growing sheltering effect of soils that rapidly progressed between 9600 and 8000 cal. BP. Soils then reached a steady state before being destabilised around 4400 cal. BP, probably in response to human impact. The human impact then reached a sufficient intensity to change erosion patterns at a regional scale, but did not result in a significant increase of the regional terrigenous flux. The following enhancement of erosion processes occurred around 2700 cal. BP. It was first paced by changing climatic conditions, but probably reinforced by human impact during Late Iron Age - Antiquity period. Over the long-term trend, the Lake Bourget record pinpoints an evolution of paleohydrological conditions in the Alps dominated by dry conditions from 9500 to 4400 cal. BP and a subsequent drift toward wetter conditions that culminated during the so-called Little Ice Age (ca 1350-1900 AD). In such a context the current dry conditions in European Alps appear out-of-trend. At high resolution, 17 periods of enhanced hydrological activity highlight the rapid climatic changes that are typical of the Holocene.","author":null,"citation":"Fabien Arnaud, Sidonie Révillon, Maxime Debret, Marie Revel, Emmanuel Chapron, Jérémy Jacob, Charline Giguet-Covex, Jérôme Poulenard, Michel Magny. 2012.\r\nLake Bourget regional erosion patterns reconstruction reveals Holocene NW European Alps soil evolution and paleohydrology.\r\nQuaternary Science Reviews, Vol. 51, pp. 81-92, 19 September 2012. \r\nDOI: 10.1016/j.quascirev.2012.07.025","edition":null,"identifier":{"id":"10.1016/j.quascirev.2012.07.025","type":"doi","url":"http://dx.doi.org/10.1016/j.quascirev.2012.07.025"},"issue":null,"journal":"Quaternary Science Reviews","pages":null,"pubRank":"1","pubYear":2012,"reportNumber":null,"title":"Lake Bourget regional erosion patterns reconstruction reveals Holocene NW European Alps soil evolution and paleohydrology","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":["hydrology"],"site":[{"NOAASiteId":"54311","geo":{"geoType":"Feature","geometry":{"coordinates":["45.7475","5.8482"],"type":"POINT"},"properties":{"easternmostLongitude":"5.8482","maxElevationMeters":"231","minElevationMeters":"231","northernmostLatitude":"45.7475","southernmostLatitude":"45.7475","westernmostLongitude":"5.8482"}},"locationName":"Continent>Europe>Western Europe>France","mappable":"Y","paleoData":[{"NOAADataTableId":"23341","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>mineralogy"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/france/bourget2012ldb01.txt","linkText":"bourget2012ldb01.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"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":"terrigenous input calculated as TiO2/0.5x100","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"chemical composition>compound>inorganic compound>titanium oxide>titanium dioxide"}]}],"dataTableName":"LDB01-I","dataTableNotes":"water depth 128m","earliestYear":7688,"earliestYearBP":7688,"earliestYearCE":-5738,"mostRecentYear":-47,"mostRecentYearBP":-47,"mostRecentYearCE":1997,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Lake Bourget LDB01-I"},{"NOAASiteId":"54312","geo":{"geoType":"Feature","geometry":{"coordinates":["45.7833","5.8333"],"type":"POINT"},"properties":{"easternmostLongitude":"5.8333","maxElevationMeters":"231","minElevationMeters":"231","northernmostLatitude":"45.7833","southernmostLatitude":"45.7833","westernmostLongitude":"5.8333"}},"locationName":"Continent>Europe>Western Europe>France","mappable":"Y","paleoData":[{"NOAADataTableId":"23340","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>mineralogy"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/france/bourget2012ldb04.txt","linkText":"bourget2012ldb04.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"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":"dimensionless","cvWhat":"chemical composition>element or compound ratio>potassium/titanium"}]}],"dataTableName":"LDB04-I","dataTableNotes":"107m depth","earliestYear":11104,"earliestYearBP":11104,"earliestYearCE":-9154,"mostRecentYear":-45,"mostRecentYearBP":-45,"mostRecentYearCE":1995,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Lake Bourget LDB04-I"}],"studyCode":null,"studyName":"Lake Bourget, France 11,000 Year Terrigenous Input Data","studyNotes":"This dataset presents the total terrigneous input in cores LDB01-I  and LBD04-I taken in Lake Bourget. \nIt mirrors the paleohydrologic evolution of River Rhone over a ca. 4000 km2 watershed.","version":"1.0","xmlId":"11688"}