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Browsing Marine Chemistry and Geochemistry (MC&G) by Title

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Browsing Marine Chemistry and Geochemistry (MC&G) by Title

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  • Jackson, Matthew G.; Hart, Stanley R.; Saal, Alberto E.; Shimizu, Nobumichi; Kurz, Mark D.; Blusztajn, Jerzy S.; Skovgaard, Anna C. (American Geophysical Union, 2008-04-17)
    We report evidence for a global Ti, Ta, and Nb (TITAN) enriched reservoir sampled by ocean island basalts (OIBs) with high 3He/4He ratios, an isotopic signature associated with the deep mantle. Excesses of Ti (and to a ...
  • Wanninkhof, Rik; Park, Geun-Ha; Takahashi, Taro; Sweeney, Colm; Feely, Richard A.; Nojiri, Yukihiro; Gruber, Nicolas; Doney, Scott C.; McKinley, Galen A.; Lenton, A.; Le Quere, C.; Heinze, C.; Schwinger, J.; Graven, H.; Khatiwala, S. (Copernicus Publications on behalf of the European Geosciences Union, 2013-03-22)
    The globally integrated sea–air anthropogenic carbon dioxide (CO2) flux from 1990 to 2009 is determined from models and data-based approaches as part of the Regional Carbon Cycle Assessment and Processes (RECCAP) project. ...
  • Conte, Maureen H.; Sicre, Marie-Alexandrine; Ruhlemann, Carsten; Weber, John C.; Schulte, Sonja; Schulz-Bull, Detlef; Blanz, Thomas (American Geophysical Union, 2006-02-07)
    In this paper, we compile the current surface seawater C37 alkenone unsaturation (UK′37) measurements (n=629, −1 to 30°C temperature range) to derive a global, field-based calibration of UK′37 with alkenone production ...
  • Zemmelink, Hendrik J.; Houghton, Leah; Sievert, Stefan M.; Frew, Nelson M.; Dacey, John W. H. (Inter-Research, 2005-06-23)
    Gradients of dimethylsulfide (DMS), dimethylsulfoniopropionate (DMSP), dimethylsulfoxide (DMSO), and bacterial numbers and diversity from the surface microlayer to 500 cm depth were assessed in coastal waters surrounding ...
  • Popendorf, Kimberly J.; Tanaka, T.; Pujo-Pay, M.; Lagaria, A.; Courties, C.; Conan, P.; Oriol, L.; Sofen, L. E.; Moutin, T.; Van Mooy, Benjamin A. S. (Copernicus Publications on behalf of the European Geosciences Union, 2011-12-20)
    Intact polar membrane lipids compose a significant fraction of cellular material in plankton and their synthesis imposes a substantial constraint on planktonic nutrient requirements. As a part of the Biogeochemistry from ...
  • Bond, Zoe A.; Cohen, Anne L.; Smith, Struan R.; Jenkins, William J. (American Geophysical Union, 2005-08-31)
    We used Secondary Ion Mass Spectrometry (SIMS) ion microprobe to analyze magnesium-to-calcium (Mg/Ca) and strontium-to-calcium (Sr/Ca) ratios of high-Mg calcite loculi within the skeleton of a shallow water gorgonian, ...
  • Duhamel, S.; Moutin, T.; Van Wambeke, F.; Van Mooy, Benjamin A. S.; Rimmelin, P.; Raimbault, P.; Claustre, H. (Copernicus Publications on behalf of the European Geosciences Union, 2007-11-08)
    Predicting heterotrophic bacteria and phytoplankton specific growth rates (μ) is of great scientific interest. Many methods have been developed in order to assess bacterial or phytoplankton μ. One widely used method is to ...
  • Pangallo, Kristin C. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2009-09)
    Halogenated 1’-methyl-1,2’-bipyrroles (MBPs) are a distinctive class of marine organic compounds. They are naturally produced, they have a unique carbon structure, they are highly halogenated, and they bioaccumulate in ...
  • Teuten, Emma L.; Reddy, Christopher M. (2006-07-24)
    To provide additional evidence that several halogenated organic compounds (HOCs) found in environmental samples are natural and not industrially produced, we analyzed an archived whale oil sample collected in 1921 from the ...
  • Graham, David W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1987-09)
    The isotopic evolution of helium and lead in the Earth is coupled by virtue of their common radioactive parents uranium and thorium. The isotopic signatures in oceanic volcanic rocks provide constraints on the temporal ...
  • Kurz, Mark D. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1982-06)
    The concentrations and isotopic compositions of helium have been measured in a number of mantle derived oceanic basalts. The goal of this research is to use the helium isotopic systematics to constrain the nature and ...
  • Kavanaugh, Maria T.; Hales, Burke; Saraceno, Martin; Spitz, Yvette H.; White, Angelicque E.; Letelier, Ricardo M. (2013-10-07)
    Comparative analyses of oceanic ecosystems require an objective framework to define coherent study regions and scale the patterns and processes observed within them. We applied the hierarchical patch mosaic paradigm of ...
  • Lam, Phoebe J.; Bishop, James K. B. (2006-06-28)
    This paper investigates ballasting and remineralization controls of carbon sedimentation in the twilight zone (100-1000 m) of the Southern Ocean. Size-fractionated (<1 μm, 1-51 μm, >51 μm) suspended particulate matter ...
  • Toole, Dierdre A.; Kieber, David J.; Kiene, Ronald P.; White, E. M.; Bisgrove, J.; del Valle, D. A.; Slezak, D. (American Geophysical Union, 2004-06-09)
    The photochemistry of dimethylsulfide (DMS) was examined in the Southern Ocean to assess its impact on the biogeochemical dynamics of DMS in Antarctic waters. Very high DMS photolysis rate constants (0.16–0.23 h−1) were ...
  • Aluwihare, Lihini I. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-04)
    The goal of this thesis was to use high resolution analytical techniques coupled with molecular level analyses to chemically characterize high molecular weight (> 1 k Da (HMW)) dissolved organic matter (DOM) isolated ...
  • Buesseler, Ken O.; McDonnell, Andrew M. P.; Schofield, Oscar M. E.; Steinberg, Deborah K.; Ducklow, Hugh W. (American Geophysical Union, 2010-11-24)
    Drifting cylindrical traps and the flux proxy 234Th indicate more than an order of magnitude higher sinking fluxes of particulate carbon and 234Th in January 2009 than measured by a time-series conical trap used regularly ...
  • Makou, Matthew C.; Thompson, Lonnie G.; Montlucon, Daniel B.; Eglinton, Timothy I. (American Geophysical Union, 2009-07-03)
    Semi-volatile organic compounds derived from burned and fresh vascular plant sources and preserved in high-altitude ice fields were detected and identified through use of recently developed analytical tools. Specifically, ...
  • Doney, Scott C.; Bopp, Laurent; Long, Matthew C. (The Oceanography Society, 2014-03)
    Changing atmospheric composition due to human activities, primarily carbon dioxide (CO2) emissions from fossil fuel burning, is already impacting ocean circulation, biogeochemistry, and ecology, and model projections ...
  • Panteleyev, George P. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1995-05)
    Much of the nuclear activity of the former Soviet Union took place within or adjacent to the confines of the Ob River drainage basin. These activities include weapons production and reprocessing at Chelyabinsk-65 (also ...
  • Ponton, Camilo; Giosan, Liviu; Eglinton, Timothy I.; Fuller, Dorian Q.; Johnson, Joel E.; Kumar, Pushpendra; Collett, Timothy S. (American Geophysical Union, 2012-02-14)
    Spanning a latitudinal range typical for deserts, the Indian peninsula is fertile instead and sustains over a billion people through monsoonal rains. Despite the strong link between climate and society, our knowledge of ...

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