Now showing items 1-20 of 23

    • Alteration of volcaniclastic deposits at Minna Bluff : geochemical insights on mineralizing environment and climate during the Late Miocene in Antarctica 

      Antibus, Joanne V.; Panter, Kurt S.; Wilch, Thomas I.; Dunbar, Nelia W.; McIntosh, William C.; Tripati, Aradhna K.; Bindeman, Ilya N.; Blusztajn, Jerzy S. (John Wiley & Sons, 2014-08-19)
      Secondary minerals in volcaniclastic deposits at Minna Bluff, a 45 km long peninsula in the Ross Sea, are used to infer processes of alteration and environmental conditions in the Late Miocene. Glassy volcaniclastic deposits ...
    • Biogeochemical applications of compound-specific radiocarbon analysis 

      Pearson, Ann (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-10)
      Compound-specific carbon isotopic (δ13C and Δ14C) data are reported for lipid biomarkers isolated from Santa Monica Basin (SMB) and Santa Barbara Basin (SBB) surface sediments. These organic compounds represent ...
    • Cesium and strontium isotopes in the northwestern North Atlantic and Arctic Ocean, 1981-1985 

      Casso, Susan A.; Clarke, William R.; Livingston, Hugh D.; Palmieri, Julianne M.; Surprenant, Lolita D. (Woods Hole Oceanographic Institution, 1988-04)
      This report is a follow-up to Woods Hole Oceanographic Institution Technical Report WHOI-84-40. It contains 137cs and 90sr data from seawater samples collected on four cruises in the northwestern North Atlantic, Arctic ...
    • Chemical characterization of dissolved organic matter (DOM) in seawater : structure, cycling, and the role of biology 

      Quan, Tracy M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2005-02)
      The goal of this thesis is to investigate three different areas relating to the characterization of dissolved organic matter (DOM): further determination of the chemical compounds present in high molecular weight DOM ...
    • Controls on stable isotope and trace metal uptake in Neogloboquadrina pachyderma (sinistral) from an Antarctic sea-ice environment 

      Hendry, Katharine R.; Rickaby, Rosalind E. M.; Meredith, Michael P.; Elderfield, Henry (2008-11)
      The polar foraminifera Neogloboquadrina pachyderma (sinistral) dominates assemblages from the high latitude Southern Ocean, which is a key region for paleoclimate studies. Here, we use N. pachyderma (s.) harvested from ...
    • Domains of depleted mantle : new evidence from hafnium and neodymium isotopes 

      Salters, Vincent J. M.; Mallick, Soumen; Hart, Stanley R.; Langmuir, Charles H.; Stracke, Andreas (American Geophysical Union, 2011-08-02)
      Isotope systematics of basalts provide information on the distribution of mantle components and the length scale of mantle heterogeneity. To obtain this information, high data and sampling density are crucial. We present ...
    • Environmentally mediated trends in otolith composition of juvenile Atlantic cod (Gadus morhua) 

      Stanley, Ryan R. E.; Bradbury, Ian R.; DiBacco, Claudio; Snelgrove, Paul V. R.; Thorrold, Simon R.; Killen, Shaun S. (2015-04)
      We evaluated the influence of environmental exposure of juvenile Atlantic cod (Gadus morua) to inform interpretations of natal origins and movement patterns using otolith geochemistry. Laboratory rearing experiments were ...
    • Evolving east Asian river systems reconstructed by trace element and Pb and Nd isotope variations in modern and ancient Red River-Song Hong sediments 

      Clift, Peter D.; Long, Hoang Van; Hinton, Richard; Ellam, Robert M.; Hannigan, Robyn E.; Tan, Mai Thanh; Blusztajn, Jerzy S.; Duc, Nguyen Anh (American Geophysical Union, 2008-04-30)
      Rivers in east Asia have been recognized as having unusual geometries, suggestive of drainage reorganization linked to Tibetan Plateau surface uplift. In this study we applied a series of major and trace element proxies, ...
    • Flow and geochemistry of groundwater beneath a back-barrier lagoon : the subterranean estuary at Chincoteague Bay, Maryland, USA 

      Bratton, John F.; Bohlke, John K.; Krantz, David E.; Tobias, Craig R. (Elsevier B.V., 2009-01-21)
      To better understand large-scale interactions between fresh and saline groundwater beneath an Atlantic coastal estuary, an offshore drilling and sampling study was performed in a large barrier-bounded lagoon, Chincoteague ...
    • A general inversion for end-member ratios in binary mixing systems 

      Sohn, Robert A. (American Geophysical Union, 2005-11-15)
      Binary mixing is one of the most common models used to explain variations in geochemical data. When the data being modeled are ratios of elements or isotopes, the mixtures follow hyperbolic trends with curvatures that ...
    • The GEOTRACES Intermediate Data Product 2014 

      Mawji, Edward; Schlitzer, Reiner; Dodas, Elena Masferrer; Abadie, Cyril; Abouchami, Wafa; Anderson, Robert F.; Baars, Oliver; Bakker, Karel; Baskaran, Mark; Bates, Nicholas R.; Bluhm, Bluhm; Bowie, Andrew; Bown, Johann; Boye, Marie; Marie, Edward A.; Branellec, Pierre; Bruland, Kenneth W.; Brzezinski, Mark A.; Bucciarelli, Eva; Buesseler, Ken O.; Butler, Edward; Cai, Pinghe; Cardinal, Damien; Casciotti, Karen L.; Chaves, Joaquin; Cheng, Hai; Chever, Fanny; Church, Thomas M.; Colman, Albert S.; Conway, Tim M.; Croot, Peter L.; Cutter, Gregory A.; de Baar, Hein J. W.; de Souza, Gregory F.; Dehairs, Frank; Deng, Feifei; Dieu, Huong Thi; Dulaquais, Gabriel; Echegoyen-Sanz, Yolanda; Edwards, R. Lawrence; Fahrbach, Eberhard; Fitzsimmons, Jessica N.; Fleisher, Martin; Frank, Martin; Friedrich, Jana; Fripiat, Francois; Galer, Stephen J. G.; Gamo, Toshitaka; Garcia Solsona, Ester; Gerringa, Loes J. A.; Godoy, Jose Marcus; Gonzalez, Santiago; Grossteffan, Emilie; Hatta, Mariko; Hayes, Christopher T.; Heller, Maija Iris; Henderson, Gideon M.; Huang, Kuo-Fang; Jeandel, Catherine; Jenkins, William J.; John, Seth G.; Kenna, Timothy C.; Klunder, Maarten; Kretschmer, Sven; Kumamoto, Yuichiro; Laan, Patrick; Labatut, Marie; Lacan, Francois; Lam, Phoebe J.; Lannuzel, Delphine; le Moigne, Frederique; Lechtenfeld, Oliver J.; Lohan, Maeve C.; Lu, Yanbin; Masque, Pere; McClain, Charles R.; Measures, Christopher; Middag, Rob; Moffett, James; Navidad, Alicia; Nishioka, Jun; Noble, Abigail E.; Obata, Hajime; Ohnemus, Daniel C.; Owens, Stephanie A.; Planchon, Frederic; Pradoux, Catherine; Puigcorbe, Viena; Quay, Paul D.; Radic, Amandine; Rehkamper, Mark; Remenyi, Tomas; Rijkenberg, Micha J. A.; Rintoul, Stephen; Robinson, Laura F.; Roeske, Tobias; Rosenberg, Mark; Rutgers van der Loeff, Michiel; Ryabenko, Evgenia; Saito, Mak A.; Roshan, Saeed; Salt, Lesley; Sarthou, Geraldine; Schauer, Ursula; Scott, Peter M.; Sedwick, Peter N.; Sha, Lijuan; Shiller, Alan M.; Sigman, Daniel M.; Smethie, William; Smith, Geoffrey J.; Sohrin, Yoshiki; Speich, Sabrina; Stichel, Torben; Stutsman, Johnny; Swift, James H.; Tagliabue, Alessandro; Thomas, Alexander L.; Tsunogai, Urumu; Twining, Benjamin S.; van Aken, Hendrik M.; van Heuven, Steven; van Ooijen, Jan; van Weerlee, Evaline; Venchiarutti, Celia; Voelker, Antje H. L.; Wake, Bronwyn; Warner, Mark J.; Woodward, E. Malcolm S.; Wu, Jingfeng; Wyatt, Neil; Yoshikawa, Hisayuki; Zheng, Xin-Yuan; Xue, Zichen; Zieringer, Moritz; Zimmer, Louise A. (Elsevier, 2015-04-16)
      The GEOTRACES Intermediate Data Product 2014 (IDP2014) is the first publicly available data product of the international GEOTRACES programme, and contains data measured and quality controlled before the end of 2013. It ...
    • Glacial-interglacial modulation of the marine nitrogen cycle by high-latitude O2 supply to the global thermocline 

      Galbraith, Eric D.; Kienast, Markus; Pedersen, Thomas F.; Calvert, Stephen E. (American Geophysical Union, 2004-10-16)
      An analysis of sedimentary nitrogen isotope records compiled from widely distributed marine environments emphasizes the global synchrony of denitrification changes and provides evidence for a strong temporal coupling of ...
    • Isotopic characterization of aerosol organic carbon components over the eastern United States 

      Wozniak, Andrew S.; Bauer, James E.; Dickhut, Rebecca M.; Xu, Li; McNichol, Ann P. (American Geophysical Union, 2012-07-04)
      Carbon isotopic signatures (δ13C, Δ14C) of aerosol particulate matter total organic carbon (TOC) and operationally defined organic carbon (OC) components were measured in samples from two background sites in the eastern ...
    • The marine biogeochemistry of zinc isotopes 

      John, Seth G. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2007-06)
      Zinc (Zn) stable isotopes can record information about important oceanographic processes. This thesis presents data on Zn isotopes in anthropogenic materials, hydrothermal fluids and minerals, cultured marine phytoplankton, ...
    • The marine geochemistry of iron and iron isotopes 

      Bergquist, Bridget A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2004-09)
      This thesis addressed questions about the Fe cycle by measuring detailed profiles and transects of Fe species in the ocean and also by exploring the use of a new tracer of Fe, Fe isotopic fractionation. In the subtropical ...
    • Molecular and isotopic records of combustion inputs to the environment over the last 250 years 

      Lima, Ana Lucia Cessel de (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2004-06)
      The most ubiquitous source of polycyclic aromatic hydrocarbons (PAHs) to the environment is incomplete combustion. This study generated a high-resolution historical record of pyrogenic PAH emissions since pre-industrial ...
    • Nitrogen isotopes in chlorophyll and the origin of Eastern Mediterranean sapropels 

      Sachs, Julian P. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1997-02)
      The goals of this thesis were: (1) to establish methods for the determination of nitrogen and carbon isotope ratios in marine particulate and sedimentary chlorophyll derivatives; (2) to establish chlorophyll δ15N and ...
    • Radium isotopes as tracers of coastal circulation pathways in the Mid-Atlantic Bight 

      Rasmussen, Linda L. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2003-06)
      Pathways of exchange between the shelf and slope in the Mid-Atlantic Bight were investigated using a combination of radiochemical tracer and hydrographic measurements. The motivation was to provide evidence of transport ...
    • The role of biological production in pleistocene atmospheric carbon dioxide variations and the nitrogen isotope dynamics of the southern ocean 

      Sigman, Daniel M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1997-09)
      This dissertation contributes to the search for a cause of glacial/interglacial variations in atmospheric carbon dioxide. The hypotheses addressed involve changes in low and high-latitude biological export production. A ...
    • Stable isotope geochemistry of nitrogen in marine particulates 

      Libes, Susan M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1983-01)
      Isotope studies of nitrogen and carbon were undertaken to investigate the fate of particulate organic matter (POM) during its residence in the water column and after deposition on the seafloor. The processes focused on ...