Denmark Strait 2000 Year Multiproxy Sediment Data Andrews, J.T.; Jennings, A.E. Andrews, J.T. 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plus mica and smectite) earth science/paleoclimate/paleoceanography (illite,sediment,null,percent,null,paleoceanography,null,null,N,1M; (R>1; 70-80%I)) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,N,axis 1 (unitless)) earth science/paleoclimate/paleoceanography (sand,sediment,null,percent,null,paleoceanography,null,null,N,<2) earth science/paleoclimate/paleoceanography (grain size mean,sediment,null,dimensionless,null,paleoceanography,null,null,N,phi scale) earth science/paleoclimate/paleoceanography (ice rafted debris,null,null,count,null,paleoceanography,null,null,N,>2mm) earth science/paleoclimate/paleoceanography (pyroxene,sediment,null,percent,null,paleoceanography,null,null,N,smooth robust) earth science/paleoclimate/paleoceanography (provenance,null,null,dimensionless,null,paleoceanography,null,null,N,Fraction unaccounted source) earth science/paleoclimate/paleoceanography (quartz,sediment,null,weight percent,null,paleoceanography,null,null,N,residual from detrend) earth science/paleoclimate/paleoceanography (calcite,sediment,null,weight percent,null,paleoceanography,detrended,null,N,null) earth science/paleoclimate/paleoceanography (mineral matter,sediment,null,percent,null,paleoceanography,null,null,N,total minerals) earth science/paleoclimate/paleoceanography (microcline,sediment,null,percent,null,paleoceanography,null,null,N,ordered microcline) earth science/paleoclimate/paleoceanography (oligoclase,sediment,null,percent,null,paleoceanography,null,null,N,Norway source) earth science/paleoclimate/paleoceanography (labradorite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (bytownite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (halite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (pyroxene,sediment,null,percent,null,paleoceanography,null,null,N,diopside) earth science/paleoclimate/paleoceanography (biotite series,sediment,null,percent,null,paleoceanography,null,null,N,1M) earth science/paleoclimate/paleoceanography (hematite group,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (silt,sediment,null,percent,null,paleoceanography,null,null,N,<2) earth science/paleoclimate/paleoceanography (mineral matter,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (smectite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (provenance,null,null,dimensionless,null,paleoceanography,null,null,N,Fraction Kangerluuaq Fjord source) earth science/paleoclimate/paleoceanography (age,null,null,year Common Era,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (calcium carbonate,null,null,weight percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (silt,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (mineral index,sediment,null,percent,null,paleoceanography,null,null,N,clay minerals) earth science/paleoclimate/paleoceanography (magnetite,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (chlorite,sediment,null,percent,null,paleoceanography,null,null,N,Fe-chlorite; Tusc) earth science/paleoclimate/paleocean (BS1191-K7>LATITUDE 68.26>LONGITUDE -32.1) (MD99-2322>LATITUDE 67.136>LONGITUDE -30.828) (JM96-1210>LATITUDE 68.183>LONGITUDE -29.6) (BS1191-K8>LATITUDE 68.133>LONGITUDE -31.862) (HU93-019B>LATITUDE 67.1>LONGITUDE -30.8) (MD99-2258>LATITUDE 63.963>LONGITUDE -24.443) (MD99-2269>LATITUDE 66.63>LONGITUDE -23.85) (B997-347>LATITUDE 63.21>LONGITUDE -24.17) In the area of Denmark Strait (~66° N), the two modes of the North Atlantic Oscillation (NAO) and Arctic Oscillation (AO) are expressed in changes of the northward flux of Atlantic water and the southward advection of polar water in the East Iceland current. Proxies from marine cores along an environmental gradient from extensive to little or no drift ice, capture low frequency variations over the last 2000 cal yr BP. Key proxies are the weight% of calcite, a measure of surface water stratification and nutrient supply, the weight% of quartz, a measure of drift ice transport, and grain size. Records from Nansen and Kangerlussuaq fjords show variable ice-rafted debris (IRD) records but have distinct mineralogy associated with differences in the fjord catchment bedrock. A comparison between cores on either side of the Denmark Strait (MD99-2322 and MD99-2269) show a remarkable millennial-scale similarity in the trends of the weight% of calcite with a trough reached during the Little Ice Age. However, the quartz records from these two sites are quite different. The calcite records from the Denmark Strait parallel the 2000 yr Arctic summer-temperature reconstructions; analysis of the detrended calcite and quartz data reveal significant multi-decadal-century periodicities superimposed on a major environmental shift occurring ca. 1450 AD. STUDY NOTES: High resolution geochemical data from sediment cores in the Denmark Strait, North Atlantic covering the past ~2,000 years. Data are from figures from Andrews and Jennings 2014, as follows: Figure 5 JM96-1210 Nansen Fjord Figure 6A: BS1191-K7 Kangerlussuaq Fjord Figure 6B: BS1191-K8 Kangerlussuaq Fjord Figure 7: Sediment sources at site HU93030-019B/MD99-2322 Kangerlussuaq Trough. Figure 8: Calcite and quartz wt% data for BS1191-K7 HU93030-019B/MD99-2322 Kangerlussuaq Trough Figure 9: calcite and quartz data for North Iceland sites MD99-2263, MD99-2269 and B997-316PC Figure 10: Calcite and quartz data at 30-yr intervals for MD99-2269 and MD99-2322 All X-ray diffraction data for HU93030-019B and MD99-2322. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Andrews, J.T. Investigator : Jennings, A.E. 2014-04-07 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/16398 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd2322.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd-k8.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd019b.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig10-2269.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd-1210.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig10-2322.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014ird-k7.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014.xlsx https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig7.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig8.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014ird-k8.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig9-347.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014gs-1210.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig9-2258.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd-k7.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd2322.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd-k8.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd019b.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig10-2269.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd-1210.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig10-2322.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014ird-k7.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014.xlsx https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig7.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig8.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014ird-k8.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig9-347.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014gs-1210.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig9-2258.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd-k7.txt English https://www.ncdc.noaa.gov/paleo/study/16398 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd2322.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd-k8.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd019b.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig10-2269.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd-1210.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig10-2322.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014ird-k7.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014.xlsx https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig7.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig8.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014ird-k8.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig9-347.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014gs-1210.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014fig9-2258.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/andrews2014/andrews2014xrd-k7.txt J.T. Andrews and A.E. Jennings2014Multidecadal to millennial marine climate oscillations across the Denmark Strait (~ 66° N) over the last 2000 cal yr BPClimate of the Past101325-34310.5194/cp-10-325-2014http://www.clim-past.net/10/325/2014/cp-10-325-2014.html START YEAR: -864 AD * END YEAR: 1998 AD -32.1 63.21 -23.85 68.26