noaa-ocean-16256 East Greenland Shelf Sediment Data from 1850-1986 AD Alonso-García, M.; Andrews, J.T.; Belt, S.T; Cabedo-Sanz, P.; Darby, D.; Jaeger, J.M. East Greenland Shelf Sediment Data from 1850-1986 AD 2014-04-02 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/16256 Investigator M. Alonso-García Investigator J.T. Andrews Investigator S.T Belt Investigator P. Cabedo-Sanz Investigator D. Darby Investigator J.M. Jaeger earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Northeast Greenland Shelf earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Bering Strait earth science paleoclimate paleoceanography mineral index,sediment,null,count per gram,null,paleoceanography,null,null,N,Hematite stained quartz and feldspar grains earth science paleoclimate paleoceanography provenance,null,null,fraction,null,paleoceanography,null,null,N,Kangerdlugssuaq Fjord source earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Axel Heiberg & Ellef Ringnes Islands earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to East of Cape Shelagsk earth science paleoclimate paleoceanography provenance,null,null,fraction,null,paleoceanography,null,null,N,Nansen Fjord source earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Devon & SW Ellesmere Islands earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Nansen Sound Area earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to South of Stappen Island between Svalbard and Norway earth science paleoclimate paleoceanography organic carbon,null,null,percent,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography volcanic material,null,null,percent,null,paleoceanography,null,null,N,volcanic glass earth science paleoclimate paleoceanography mica group,null,null,percent,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to S central Kara Sea earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Cornwall Island earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N, Grains matched to Yermak Plateau earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to S Greenland earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to N Iceland earth science paleoclimate paleoceanography ice rafted debris,null,null,count per gram,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography provenance,null,null,fraction,null,paleoceanography,null,null,N,unexplained source earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Victoria & Banks Islands earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to East of Svalbard earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to central Bering Chukchi Sea earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Canadian Sources except SE Ellesmere earth science paleoclimate paleoceanography mineral index,null,null,percent,null,paleoceanography,null,null,N,Hematite stained quartz and feldspar grains earth science paleoclimate paleoceanography mineral index,sediment,null,count per gram,null,paleoceanography,null,null,N,quartz and feldspar earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to North Greenland earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Melville & Bathurst Islands earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Liard & Root Rivers (MacKenzie R) earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Pechora Sea near Pechora River earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to West of Wrangel Island earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Bathurst Island earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to SE Ellesmere Island Alexandra Fiord and Cadogon Inlet earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Northern Kara Sea earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to W Bering Chukchi Sea earth science paleoclimate paleoceanography ice proxy with 25 carbon atoms,null,null,parts per billion,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography mineral index,null,null,percent,null,paleoceanography,null,null,N,quartz and feldspar earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to MacKenzie Delta earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Kolyma River delta offshore area earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Axel Heiburg Island earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to West of Franz Josef Land earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to E Bering Chukchi Sea earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to E Greenland earth science paleoclimate paleoceanography highly-branched isoprenoid alkene,null,null,parts per billion,null,paleoceanography,null,null,N,di-unsaturated HBI diene earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to N.Slope Axel Heiberg earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Peninsula NW Devon Isl. earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to east of Hershel Island earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to north of Alaska inner shelf earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Yenisey River near mouth earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to West Laptev Sea earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Off Indigirka Delta earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Southeast of Svalbard earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Between Severaya Zemlya & Tamir Pennisula earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to W Iceland earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Yermak palteau + Svalbard earth science paleoclimate paleoceanography depth,null,null,centimeter,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography brassicasterol,null,null,microgram per gram,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography age,null,null,year Common Era,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography mineral matter,null,null,percent,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to North Ellesmere Island earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N, Grains matched to Ob River earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to East Laptev Sea earth science paleoclimate paleoceanography provenance,null,null,percent,null,paleoceanography,null,null,N,Grains matched to Barents Sea North of Svalbard earth science paleoclimate paleocean biomarkers earth science paleoclimate paleocean lithology earth science paleoclimate paleocean physical properties geoscientificInformation 1851 AD 1986 AD 99 cal yr BP -36 cal yr BP Complete 66.204 66.204 -31.985 -31.985 -300 -300 Ocean Atlantic Ocean North Atlantic Ocean PO175GKC>LATITUDE 66.204>LONGITUDE -31.985 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

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Alonso-García, M., J.T. Andrews, S.T. Belt, P. Cabedo-Sanz, D. Darby, and J. Jaeger 2013 The Holocene 23 12 1672-1683 10.1177/0959683613505343

The reduction in sea ice along the SE Greenland coast during the last century has severely impacted ice-rafting to this area. In order to reconstruct ice-rafting and oceanographic conditions in the area of Denmark Strait during the last ~150 yr we conducted a multi-proxy study on three short (20 cm) sediment cores from outer Kangerdlugssuaq Though (~300m water depth). The proxy-based data obtained has been compared with historical and instrumental data to gain a better understanding of the ice sheet-ocean interactions in the area. A robust chronology has been developed based on 210Pb and 137Cs measurements on core PO175GKC#9 (~66.2°N, 32°W) and expanded to the two adjacent cores based on correlations between calcite weight% records. Our proxy records include sea ice and phytoplankton biomarkers, and a variety of mineralogical determinations based on the <2 mm sediment fraction, including identification with quantitative X-ray diffraction, ice-rafted debris counts o! n the 63-150 µm sand fraction, and source identifications based on the composition of Fe oxides in the 45-250 µm fraction. A multivariate statistical analysis indicated significant correlations between our proxy records and historical data, especially with the mean annual temperature data from Stykkisholmur (Iceland) and the storis index (historical observations of sea ice export via the East Greenland Current). In particular, the biological proxies (calcite wt%, IP25, and TOC%) showed significant linkage with the storis index. Our records show two distinct intervals in the recent history of the SE Greenland coast. The first of these (AD 1850-1910) shows predominantly perennial sea ice conditions in the area, while the second (AD 1910-1990) shows more seasonally open water conditions. STUDY NOTES: In order to reconstruct ice-rafting and oceanographic conditions in the area of Denmark Strait during the last ~150 yr we conducted a multi-proxy study on three short (20 cm) sediment cores from outer Kangerdlugssuaq Trough (~300m water depth). The proxy-based data obtained has been compared with historical and instrumental data to gain a better understanding of the ice sheet-ocean interactions in the area. A robust chronology has been developed based on 210Pb and 137Cs measurements on core PO175GKC#9 (~66.2°N, 32°W) and expanded to the two adjacent cores based on correlations between calcite weight% records. Our proxy records include sea ice and phytoplankton biomarkers, and a variety of mineralogical determinations based on the <2 mm sediment fraction, including identification with quantitative X-ray diffraction, ice-rafted debris counts on the 63-150 µm sand fraction, and source identifications based on the composition of Fe oxides in the 45-250 µm fraction.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/alonso-garcia2013/alonso-garcia2013-sed.txt Formatted Text File; PO175GKC#9,#8,#7 Composite SedUnMix GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/alonso-garcia2013/alonso-garcia2013-gkc8-biom.txt Formatted Text File; PO175GKC#8 Biomarker GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/alonso-garcia2013/alonso-garcia2013-ird.txt Formatted Text File; PO175GKC#9 IRD GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/alonso-garcia2013/alonso-garcia2013-gkc9-biom.txt Formatted Text File; PO175GKC#9 Biomarker GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/alonso-garcia2013/alonso-garcia2013-feox.txt Formatted Text File; PO175GKC#9 FeOx USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11