Lake Lehmilampi, Finland 2000 Year Varved Sediment Data Haltia-Hovi, E.; Saarinen, T.; Kukkonen, M. Haltia-Hovi, E. Saarinen, T. Kukkonen, M. PAGES 2k Network PAGES Arctic 2k earth science/paleoclimate/paleolimnology (age,null,null,year Common Era,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (absorbance,null,null,dimensionless,null,paleolimnology,null,x-ray densitometry,N,Measured on a grayscale of 0-255) earth science/paleoclimate/paleolimnology (varve thickness,null,null,millimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (Lake Lehmilampi>LATITUDE 63.616>LONGITUDE 29.1) A high-resolution study was performed on varved sediments from Lake Lehmilampi in eastern Finland. Varve data was collected by digital image analysis using standard 1.8 mm thick samples impregnated in epoxy and X-rayed. Climatic variability is imprinted on varve properties (varve thickness and accumulation of mineral and organic matter) during the last 2000 years. The cumulative counting error of the varve record is estimated as 2.3%. Qualitative comparison of varve parameters and residual D14C constructed from tree-rings revealed close correspondence between the two records, suggesting solar forcing on lake sedimentation. Classical climatic periods of the last millennia, Medieval Climate Anomaly (1060-1280 in the varve record) and Little Ice Age (cooler phases culminating in 1340, 1465, 1545, 1680, 1850 and also in 1930 in the varve record) are clearly evident in the varve record. At present the physical link between solar activity levels and lake sedimentation has not been established. STUDY NOTES: Sediment varve thickness and relative X-Ray density data from Lake Lehmilampi, eastern Finland. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Haltia-Hovi, E. Investigator : Saarinen, T. Investigator : Kukkonen, M. 2009-10-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/8661 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/lehmilampi2007.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/lehmilampi2007.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/lehmilampi2007.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/lehmilampi2007.txt English https://www.ncdc.noaa.gov/paleo/study/8661 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/lehmilampi2007.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/lehmilampi2007.txt Eeva Haltia-Hovi, Timo Saarinen, Maaret Kukkonen2007A 2000-year record of solar forcing on varved lake sediment in eastern FinlandQuaternary Science Reviews265-6678-68910.1016/j.quascirev.2006.11.005http://www.sciencedirect.com/science/article/pii/S0277379106003076 START YEAR: 1949 cal yr BP * END YEAR: -54 cal yr BP 29.1 63.616 29.1 63.616