{"NOAAStudyId":"16379","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":"2013-01-01","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-16379.xml","doi":null,"earliestYearBP":1090,"earliestYearCE":860,"entryId":"noaa-lake-16379","funding":[],"investigators":"Larsen, D.J.; Miller, G.H.; Geirsdóttir, A.","mostRecentYearBP":-50,"mostRecentYearCE":2000,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/16379","originalSource":null,"publication":[{"abstract":"Records of past glacier fluctuations are an important source of paleoclimate data and provide context for future changes in global ice volume. In the North Atlantic region, glacier chronologies can be used to track the response of terrestrial environments to variations in marine conditions including circulation patterns and sea ice cover. However, the majority of glacier records are discontinuous and temporally restricted, owing in part to the extensive advance of Northern Hemisphere glaciers during the Little Ice Age (LIA), the most recent and severe climate anomaly of the Neoglacial period. Here, we combine an absolutely dated and continuous record of Langjökull ice marginal fluctuations with new reconstructions of sediment flux through the past 1.2 ka using varved sediments from Hvítárvatn, a proglacial lake in Iceland’s central highlands. Large spatial and temporal variations in sediment flux related to changing ice cap dimensions are reconstructed from six sediment cores and seismic reflection profiles. Sediment data reveal two discrete phases of ice expansion occurring ca. 1400 to 1550 AD and ca. 1680 to 1890 AD. These advances are separated by a persistent interval of ice retreat, suggesting that a substantial period of warming interrupted LIA cold. The  pattern of Icelandic glacier activity contrasts with that of European glaciers but shows strong similarities to reconstructed changes in North Atlantic oceanographic conditions, indicating differing regional responses to coupled ocean–atmosphere–sea ice variations. Our data suggest that subpolar North Atlantic circulation dynamics may have led to coherent asynchronous glacier fluctuations during the mid LIA and highlight the importance of circulation variability in triggering and transmitting multidecadal scale climate changes to nearby terrestrial environments.","author":{"name":"Larsen, D.J., Miller, G.H., Geirsdottir, A."},"citation":"Larsen, D.J., Miller, G.H., Geirsdottir, A. 2013. Asynchronous Little Ice Age glacier fluctuations in Iceland and European Alps linked to shifts in subpolar North Atlantic circulation. Earth and Planetary Science Letters, 380, 52 - 59. ","edition":null,"identifier":null,"issue":null,"journal":"Earth and Planetary Science Letters","pages":"52 - 59","pubRank":"1","pubYear":2013,"reportNumber":null,"title":"Asynchronous Little Ice Age glacier fluctuations in Iceland and European Alps linked to shifts in subpolar North Atlantic circulation","type":"publication","volume":"380"}],"reconstruction":"N","scienceKeywords":["Little Ice Age (LIA)","Arctic"],"site":[{"NOAASiteId":"55169","geo":{"geoType":"Feature","geometry":{"coordinates":["64.64172","-19.83995"],"type":"POINT"},"properties":{"easternmostLongitude":"-19.83995","maxElevationMeters":"422","minElevationMeters":"422","northernmostLatitude":"64.64172","southernmostLatitude":"64.64172","westernmostLongitude":"-19.83995"}},"locationName":"Continent>Europe>Northern Europe>Iceland","mappable":"Y","paleoData":[{"NOAADataTableId":"26445","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/hvitarvatn2013-03-1-thickness.txt","linkText":"hvitarvatn2013-03-1-thickness.txt","urlDescription":"Data: Varve thickness, core hvitarvatn2013-03-1-thickness","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"physical property>length>varve thickness"}]}],"dataTableName":"hvitarvatn2013-03-1-thickness","dataTableNotes":"Water depth is 36.5 m, and Spliced core length 18.2 m.","earliestYear":870,"earliestYearBP":1080,"earliestYearCE":870,"mostRecentYear":2000,"mostRecentYearBP":-50,"mostRecentYearCE":2000,"species":[],"timeUnit":"AD"},{"NOAADataTableId":"27643","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/hvitarvatn2013-03-1-ird.txt","linkText":"hvitarvatn2013-03-1-ird.txt","urlDescription":"Data: Ice rafted debris, core hvitarvatn2013-03-1-ird","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"size fraction >= 2mm","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count","cvWhat":"geological material>bulk geological material>mineral matter>ice rafted debris"}]}],"dataTableName":"hvitarvatn2013-03-1-ird","dataTableNotes":"Water depth is 36.5 m, and Spliced core length 18.2 m.","earliestYear":860,"earliestYearBP":1090,"earliestYearCE":860,"mostRecentYear":2000,"mostRecentYearBP":-50,"mostRecentYearCE":2000,"species":[],"timeUnit":"AD"},{"NOAADataTableId":"27649","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/hvitarvatn2013-6core-means.txt","linkText":"hvitarvatn2013-10-7-thickness.txt","urlDescription":"Data: Varve thickness, six-core means","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"decadal mean","cvDataType":"PALEOLIMNOLOGY","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter per year","cvWhat":"formation property>formation rate>sedimentation rate"},{"cvAdditionalInfo":"interval mean","cvDataType":"PALEOLIMNOLOGY","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter per year","cvWhat":"formation property>formation rate>sedimentation rate"},{"cvAdditionalInfo":"seismic interpolated mean","cvDataType":"PALEOLIMNOLOGY","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter per year","cvWhat":"formation property>formation rate>sedimentation rate"}]}],"dataTableName":"hvitarvatn2013-6-core-thickness-means","dataTableNotes":"Six core thickness decadal mean, interval mean, and seismic interpolated mean. Data for the six cores averaged are accessible from http://ncdc.noaa.gov/paleo/study/16379 and http://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/ , in files: hvitarvatn2013-03-1-thickness.txt, hvitarvatn2013-03-2-thickness.txt, hvitarvatn2013-03-3-thickness.txt, hvitarvatn2013-03-4-thickness.txt, hvitarvatn2013-09-6-thickness.txt, and hvitarvatn2013-10-7-thickness.txt. ","earliestYear":870,"earliestYearBP":1080,"earliestYearCE":870,"mostRecentYear":2000,"mostRecentYearBP":-50,"mostRecentYearCE":2000,"species":[],"timeUnit":"AD"}],"siteName":"Lake Hvítárvatn03-1"},{"NOAASiteId":"55170","geo":{"geoType":"Feature","geometry":{"coordinates":["64.64305","-19.84928"],"type":"POINT"},"properties":{"easternmostLongitude":"-19.84928","maxElevationMeters":"422","minElevationMeters":"422","northernmostLatitude":"64.64305","southernmostLatitude":"64.64305","westernmostLongitude":"-19.84928"}},"locationName":"Continent>Europe>Northern Europe>Iceland","mappable":"Y","paleoData":[{"NOAADataTableId":"27644","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/hvitarvatn2013-03-2-ird.txt","linkText":"hvitarvatn2013-03-2-ird.txt","urlDescription":"Data: Ice rafted debris, core hvitarvatn2013-03-2-ird","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"size fraction >= 2mm","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count","cvWhat":"geological material>bulk geological material>mineral matter>ice rafted debris"}]}],"dataTableName":"hvitarvatn2013-03-2-ird","dataTableNotes":"Water depth is 23.1 m, and Spliced core length 13.7 m.","earliestYear":860,"earliestYearBP":1090,"earliestYearCE":860,"mostRecentYear":2000,"mostRecentYearBP":-50,"mostRecentYearCE":2000,"species":[],"timeUnit":"AD"},{"NOAADataTableId":"27645","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/hvitarvatn2013-03-2-thickness.txt","linkText":"hvitarvatn2013-03-2-thickness.txt","urlDescription":"Data: Varve thickness, core hvitarvatn2013-03-2-thickness.txt","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"physical property>length>varve thickness"}]}],"dataTableName":"hvitarvatn2013-03-2-thickness","dataTableNotes":"Water depth is 23.1 m, and Spliced core length 13.7 m.","earliestYear":870,"earliestYearBP":1080,"earliestYearCE":870,"mostRecentYear":2000,"mostRecentYearBP":-50,"mostRecentYearCE":2000,"species":[],"timeUnit":"AD"}],"siteName":"Lake Hvítárvatn03-2"},{"NOAASiteId":"55171","geo":{"geoType":"Feature","geometry":{"coordinates":["64.63805","-19.85912"],"type":"POINT"},"properties":{"easternmostLongitude":"-19.85912","maxElevationMeters":"422","minElevationMeters":"422","northernmostLatitude":"64.63805","southernmostLatitude":"64.63805","westernmostLongitude":"-19.85912"}},"locationName":"Continent>Europe>Northern Europe>Iceland","mappable":"Y","paleoData":[{"NOAADataTableId":"27646","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/hvitarvatn2013-03-3-ird.txt","linkText":"hvitarvatn2013-03-3-ird.txt","urlDescription":"Data: Ice rafted debris, core hvitarvatn2013-03-3-ird","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"size fraction >= 2mm","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count","cvWhat":"geological material>bulk geological material>mineral matter>ice rafted debris"}]}],"dataTableName":"hvitarvatn2013-03-3-ird","dataTableNotes":"HVT03-3 ird","earliestYear":1700,"earliestYearBP":250,"earliestYearCE":1700,"mostRecentYear":2000,"mostRecentYearBP":-50,"mostRecentYearCE":2000,"species":[],"timeUnit":"AD"},{"NOAADataTableId":"27647","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/hvitarvatn2013-03-3-thickness.txt","linkText":"hvitarvatn2013-03-3-thickness.txt","urlDescription":"Data: Varve thickness, core hvitarvatn2013-03-3-thickness.txt","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"physical property>length>varve thickness"}]}],"dataTableName":"hvitarvatn2013-03-3-thickness","dataTableNotes":"Water depth is 30.4 m, and Spliced core length 12.1 m.","earliestYear":870,"earliestYearBP":1080,"earliestYearCE":870,"mostRecentYear":2000,"mostRecentYearBP":-50,"mostRecentYearCE":2000,"species":[],"timeUnit":"AD"}],"siteName":"Lake Hvítárvatn03-3"},{"NOAASiteId":"55845","geo":{"geoType":"Feature","geometry":{"coordinates":["64.64588","-19.83328"],"type":"POINT"},"properties":{"easternmostLongitude":"-19.83328","maxElevationMeters":"422","minElevationMeters":"422","northernmostLatitude":"64.64588","southernmostLatitude":"64.64588","westernmostLongitude":"-19.83328"}},"locationName":"Continent>Europe>Northern Europe>Iceland","mappable":"Y","paleoData":[{"NOAADataTableId":"27648","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/hvitarvatn2013-03-4-thickness.txt","linkText":"hvitarvatn2013-03-4-thickness.txt","urlDescription":"Data: Varve thickness, core hvitarvatn2013-03-4-thickness","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"physical property>length>varve thickness"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"}]}],"dataTableName":"hvitarvatn2013-03-4-thickness","dataTableNotes":"Water depth is 31.26 m, and Spliced core length 24.04 m.","earliestYear":870,"earliestYearBP":1080,"earliestYearCE":870,"mostRecentYear":2000,"mostRecentYearBP":-50,"mostRecentYearCE":2000,"species":[],"timeUnit":"AD"}],"siteName":"Lake Hvítárvatn03-4"},{"NOAASiteId":"55846","geo":{"geoType":"Feature","geometry":{"coordinates":["64.63483","-19.84962"],"type":"POINT"},"properties":{"easternmostLongitude":"-19.84962","maxElevationMeters":"422","minElevationMeters":"422","northernmostLatitude":"64.63483","southernmostLatitude":"64.63483","westernmostLongitude":"-19.84962"}},"locationName":"Continent>Europe>Northern Europe>Iceland","mappable":"Y","paleoData":[{"NOAADataTableId":"27650","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/hvitarvatn2013-09-6-ird.txt","linkText":"hvitarvatn2013-09-6-ird.txt","urlDescription":"Data: Ice rafted debris, core hvitarvatn2013-09-6-ird","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"size fraction >= 2mm","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count","cvWhat":"geological material>bulk geological material>mineral matter>ice rafted debris"}]}],"dataTableName":"hvitarvatn2013-09-6-ird","dataTableNotes":"Water depth is 58.05 m, and Spliced core length 3.94 m.","earliestYear":1700,"earliestYearBP":250,"earliestYearCE":1700,"mostRecentYear":2000,"mostRecentYearBP":-50,"mostRecentYearCE":2000,"species":[],"timeUnit":"AD"},{"NOAADataTableId":"27651","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/hvitarvatn2013-09-6-thickness.txt","linkText":"hvitarvatn2013-09-6-thickness.txt","urlDescription":"Data: Varve thickness, core hvitarvatn2013-09-6-thickness","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"physical property>length>varve thickness"}]}],"dataTableName":"hvitarvatn2013-09-6-thickness","dataTableNotes":"Water depth is 58.05 m, and Spliced core length 3.94 m.","earliestYear":1700,"earliestYearBP":250,"earliestYearCE":1700,"mostRecentYear":2000,"mostRecentYearBP":-50,"mostRecentYearCE":2000,"species":[],"timeUnit":"AD"}],"siteName":"Lake Hvítárvatn09-6"},{"NOAASiteId":"55847","geo":{"geoType":"Feature","geometry":{"coordinates":["64.61897","-19.83943"],"type":"POINT"},"properties":{"easternmostLongitude":"-19.83943","maxElevationMeters":"422","minElevationMeters":"422","northernmostLatitude":"64.61897","southernmostLatitude":"64.61897","westernmostLongitude":"-19.83943"}},"locationName":"Continent>Europe>Northern Europe>Iceland","mappable":"Y","paleoData":[{"NOAADataTableId":"27643","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/hvitarvatn2013-10-7-ird.txt","linkText":"hvitarvatn2013-10-7-ird.txt","urlDescription":"Data: Ice rafted debris, core hvitarvatn2013-10-7-ird","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"size fraction >= 2mm","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count","cvWhat":"geological material>bulk geological material>mineral matter>ice rafted debris"}]}],"dataTableName":"hvitarvatn2013-03-1-ird","dataTableNotes":"Water depth is 36.5 m, and Spliced core length 18.2 m.","earliestYear":860,"earliestYearBP":1090,"earliestYearCE":860,"mostRecentYear":2000,"mostRecentYearBP":-50,"mostRecentYearCE":2000,"species":[],"timeUnit":"AD"},{"NOAADataTableId":"27653","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/iceland/hvitarvatn2013-10-7-thickness.txt","linkText":"hvitarvatn2013-10-7-thickness.txt","urlDescription":"Data: Varve thickness, core hvitarvatn2013-10-7-thickness","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"physical property>length>varve thickness"}]}],"dataTableName":"hvitarvatn2013-10-7-thickness","dataTableNotes":"Water depth is 36.11 m, and Spliced core length 9.37 m.","earliestYear":870,"earliestYearBP":1080,"earliestYearCE":870,"mostRecentYear":2000,"mostRecentYearBP":-50,"mostRecentYearCE":2000,"species":[],"timeUnit":"AD"}],"siteName":"Lake Hvítárvatn10-7"}],"studyCode":null,"studyName":"Asynchronous Little Ice Age glacier fluctuations in Iceland and European Alps linked to shifts in subpolar North Atlantic circulation","studyNotes":"Keywords, Iceland, Little Ice Age, glacier fluctuations, sediment yield, varves, NAO, AMOC, subpolar gyre, Arctic sea ice","version":"1.0","xmlId":"14106"}