Caissie et al. 2010 Bering Sea Deglacial-Holocene Diatom Productivity Data Caissie, B.E.; Brigham-Grette, J.; Lawrence, K.T.; Herbert, T.D.; Cook, M.S. Caissie, B.E. Brigham-Grette, J. Lawrence, K.T. Herbert, T.D. Cook, M.S. earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Coscinodiscus marginatus) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Chaetoceros sp. resting spores) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira gravida) earth science/paleoclimate/paleoceanography (delta 18O,Neogloboquadrina pachyderma sinistral,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Asteromphalus sp.) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Stephanopyxis sp.) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira trifulta) earth science/paleoclimate/paleoceanography (delta 18O,Uvigerina peregrina,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Coscinodiscus radiatus) earth science/paleoclimate/paleoceanography (total centric diatoms,null,null,percent,null,paleoceanography,null,null,N,benthic varieties) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Odontella aurita) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Rhizosolenia hebetata) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira hyalina) earth science/paleoclimate/paleoceanography (delta 13C,Neogloboquadrina pachyderma sinistral,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Azpeitia tabularis) earth science/paleoclimate/paleoceanography (age,null,null,calendar year before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Bacterosira bathyomphala) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Fragilariopsis sp.) earth science/paleoclimate/paleoceanography (total pennate diatoms,null,null,percent,null,paleoceanography,null,null,N,benthic assemblages) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Stellarima sp.) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira pacifica) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira sp.) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira eccentrica) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiothrix longissima) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassiosira nordenskioldii; Uncertain taxon name) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Neodenticulopsis seminae) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,duplicate of NMR study?) earth science/paleoclimate/paleoceanography (delta 13C,Uvigerina peregrina,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Actinocyclus curvatulus) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Actinocyclus sp.) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Rhizosolenia styliformis) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Coscinodiscus oculus-iridis) earth science/paleoclimate/paleoceanography (total diatoms,null,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Porosira glacialis) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Thalassionema nitzschioides) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Shionodiscus oestrupii; Unaccepted name: Thalassiosira oestrupi) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (HLY0202-51JPC>LATITUDE 54.55315>LONGITUDE -168.6692) The Bering Sea gateway between the Pacific and Arctic oceans impacts global climate when glacial-interglacial shifts in shore line position and ice coverage change regional albedo. Previous work has shown that during the last glacial termination and into the Holocene, sea level rises and sea ice coverage diminishes from perennial to absent. Yet, existing work has not quantified sea ice duration or sea surface temperatures (SST) during this transition. Here we combine diatom assemblages with the first alkenone record from the Bering Sea to provide a semiquantitative record of sea ice duration, SST, and productivity change since the Last Glacial Maximum (LGM). During the LGM, diatom assemblages indicate that sea ice covered the southeastern Bering Sea perennially. At 15.1 cal ka B.P., the diatom assemblage shifts to one more characteristic of seasonal sea ice and alkenones occur in the sediments in low concentrations. Deglaciation is characterized by laminated intervals with highly productive and diverse diatom assemblages and inferred high coccolithophorid production. At 11.3 cal ka B.P. the diatom assemblage shifts from one dominated by sea ice species to one dominated by a warmer water, North Pacific species. Simultaneously, the SST increases by 3°C and the southeastern Bering Sea becomes ice-free year-round. Productivity and temperature proxies are positively correlated with independently dated records from elsewhere in the Bering Sea, the Sea of Okhotsk, and the North Pacific, indicating that productivity and SST changes are coeval across the region. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Caissie, B.E. Investigator : Brigham-Grette, J. Investigator : Lawrence, K.T. Investigator : Herbert, T.D. Investigator : Cook, M.S. 2010-01-15 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/8731 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/caissie2010/caissie2010.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/h2-51jpc-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/caissie2010/caissie2010.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/h2-51jpc-tab.txt English https://www.ncdc.noaa.gov/paleo/study/8731 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/caissie2010/caissie2010.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/h2-51jpc-tab.txt Caissie, B.E., J. Brigham-Grette, K.T. Lawrence, T.D. Herbert, and M.S. Cook. 2010. Last Glacial Maximum to Holocene sea surface conditions at Umnak Plateau, Bering Sea, as inferred from diatom, alkenone, and stable isotope records. Paleoceanography, 25, PA1206. doi: 10.1029/2008PA001671. START YEAR: 19010 cal yr BP * END YEAR: 367 cal yr BP -168.6692 54.55315 -168.6692 54.55315