Recent Submissions

  • Eastern Pacific cooling and Atlantic overturning circulation during the last deglaciation 

    Kienast, Markus, Stephanie S. Kienast, Stephen E. Calvert, Timothy I. Eglinton, et al. 2006. "Eastern Pacific cooling and Atlantic overturning circulation during the last deglaciation." Nature 443(7113): 846-849.
    Surface ocean conditions in the equatorial Pacific Ocean could hold the clue to whether millennial-scale global climate change during glacial times was initiated through tropical ocean - atmosphere feedbacks or by changes ...
  • Near collapse of the meridional SST gradient in the eastern equatorial Pacific during Heinrich Stadial 1 

    Kienast, Stephanie S., Tobias Friedrich, Nathalie Dubois, Paul S. Hill, et al. 2013. "Near collapse of the meridional SST gradient in the eastern equatorial Pacific during Heinrich Stadial 1." Paleoceanography 28(4): 663-674.
    Sea surface temperatures (SST) and inorganic continental input over the last 25,000years (25ka) are reconstructed in the far eastern equatorial Pacific (EEP) based on three cores stretching from the equatorial front (~0.01 ...
  • Comment on "Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?'' by M. Lyle et al. 

    Francois, Roger, Martin Frank, Michiel Rutgers van der Loeff, Michael P. Bacon, et al. 2007. "Comment on "Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?'' by M. Lyle et al.." Paleoceanography 22(1): 1216-PA1216.
    No abstract available.
  • Comment on 'Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?' by M. Lyle et al 

    Francois, Roger, Martin Frank, Michiel Rutgers Van der Loeff, Michael P. Bacon, et al. 2007. "Comment on 'Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?' by M. Lyle et al." Paleoceanography 22(3).
    No abstract available.
  • Millennial-scale variations in hydrography and biogeochemistry in the Eastern Equatorial Pacific over the last 100 kyr 

    Dubois, Nathalie, Markus Kienast, Stephanie Kienast, Claire Normandeau, et al. 2011. "Millennial-scale variations in hydrography and biogeochemistry in the Eastern Equatorial Pacific over the last 100 kyr." Quaternary Science Reviews 30(1-2): 210-223.
    In this study, we use records of nitrogen isotope ratios ([delta][super]15N), UK'37 temperature estimates, organic carbon and opal percentages from high-resolution sediment cores located in the eastern equatorial Pacific ...
  • The acceleration of oceanic denitrification during deglacial warming 

    Galbraith, Eric D., Markus Kienast, Ana Luiza Albuquerque, Mark A. Altabet, et al. 2013. "The acceleration of oceanic denitrification during deglacial warming." Nature Geoscience 6(7): 579-584.
    Over much of the ocean's surface, productivity and growth are limited by a scarcity of bioavailable nitrogen. Sedimentary delta N-15 records spanning the last deglaciation suggest marked shifts in the nitrogen cycle during ...
  • A review of nitrogen isotopic alteration in marine sediments 

    Robinson, Rebecca S., Markus Kienast, Ana Luiza Albuquerque, Mark Altabet, et al. 2012. "A review of nitrogen isotopic alteration in marine sediments." Paleoceanography 27: 4203-PA4203.
    Nitrogen isotopes are an important tool for evaluating past biogeochemical cycling from the paleoceanographic record. However, bulk sedimentary nitrogen isotope ratios, which can be determined routinely and at minimal cost, ...
  • Sedimentary opal records in the eastern equatorial Pacific: It is not all about leakage 

    Dubois, Nathalie, Markus Kienast, Stephanie Kienast, Stephen E. Calvert, et al. 2010. "Sedimentary opal records in the eastern equatorial Pacific: It is not all about leakage." Global Biogeochemical Cycles 24: 4020-GB4020.
    The clear predictions of the silicic acid leakage hypothesis (SALH) resulted in a number of studies of downcore opal records from the tropical Pacific. The original SALH predicts that unused silicic acid, due to Fe-driven ...