noaa-lake-18575 Lake DV09, Devon Island 7,500 Year Physical Properties Data Gajewski, K.J.; Courtney Mustaphi, C.J. Lake DV09, Devon Island 7,500 Year Physical Properties Data 2015-03-20 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/18575 Investigator K.J. Gajewski Investigator C.J. Courtney Mustaphi earth science paleoclimate paleolimnology calcium carbonate,sediment,null,percent,null,paleolimnology,null,loss on ignition,N,null earth science paleoclimate paleolimnology volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,null,null,N,x10-5 units; core B earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology varve thickness,sediment,null,millimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,null,null,N,x10-5 units; core T earth science paleoclimate paleolimnology sand,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology silt,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology clay,sediment,null,percent,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology grayscale,sediment,null,dimensionless,null,paleolimnology,averaged,image analysis,N,average pixel value earth science paleoclimate paleolimnology biogenic silica,sediment,null,percent,null,paleolimnology,null,null,N,dry weight % earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,core T earth science paleoclimate paleolimnology age,null,null,year Common Era,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology age,null,one standard deviation lower bound,null,null,paleolimnology,null,null,N,cumulative negative varve years earth science paleoclimate paleolimnology depth,null,null,millimeter,null,paleolimnology,null,null,N,Cumulative Varve Depth earth science paleoclimate paleolimnology organic matter,sediment,null,percent,null,paleolimnology,null,loss on ignition,N,null earth science paleoclimate paleolimnology age,null,null,calendar year before present,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology age,null,one standard deviation upper bound,null,null,paleolimnology,null,null,N,cumulative positive varve years earth science paleoclimate paleolimnology mineral matter,sediment,null,percent,null,paleolimnology,null,loss on ignition,N,null earth science paleoclimate paleolimnology physical properties geoscientificInformation 7500 cal yr BP -46 cal yr BP Complete 75.57 75.57 -89.31 -89.31 35 35 Continent North America Canada Nunavut DV09>LATITUDE 75.57>LONGITUDE -89.31 None 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. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Colin J. Courtney Mustaphi and Konrad Gajewski 2013 Canadian Journal of Earth Sciences 50 5 564-575 10.1139/cjes-2012-0143 http://www.nrcresearchpress.com/doi/abs/10.1139/cjes-2012-0143#.VRCR32NTcsc

Sediment cores from Lake DV09, northern Devon Island, Nunavut, Canada (75 34'34"N, 89 18'55"W), were studied to reconstruct the lake ontogeny through analysis and interpretation of the sediment stratigraphy. The lake was uplifted from marine inundation ~7600 cal BP. After a millennium of rapid sediment accumulation, which coincided with the Holocene Thermal Maximum in the region, accumulation rates decreased over the past 6000 years as the Arctic became colder. This resulted in the deposition of very fine laminae that were interpreted as varves. The uppermost laminated sediments provided a ~1600 year history of annual sediment transport and deposition into the lake. During periods of warmer temperatures, such as between 6000 and 7500 cal BP and during the Medieval Climate Anomaly (~950-1300 CE; CE, Christian Era), hydroclimatic and permafrost slope processes increased sedimentation rates into the basin. STUDY NOTES: Multiproxy data from 2 sediment cores collected in Lake DV09, Devon Island, Nunavut, Canada, as presented in Courtney Mustaphi and Gajewski (2013) Figures 2, 4, 5, and 6. Measured parameters include varve thickness, magnetic susceptibility, clay/sand/silt, loss-on-ignition, and sediment greyscale.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/dv09b2013grey.txt Data File; Lake DV09 Core B Greyscale Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/dv09t2013bsi.txt Data File; Lake DV09 Core T Biogenic Silica Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/dv09b2013varve.txt Data File; Lake DV09 Core B Varve Thickness Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/dv09t2013ms.txt Data File; Lake DV09 Core T Magnetic Susceptibility Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/dv09-2013.xls Excel Data File; Lake DV09 7,500 Year Physical Properties Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/dv09t2013loi.txt Data File; Lake DV09 Core T Loss-On-Ignition Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/dv09b2013ms.txt Data File; Lake DV09 Core B Magnetic Susceptibility Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/canada/yukon/dv09t2013gs.txt Data File; Lake DV09 Core T Sand-Silt-Clay Percentages USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11