Now showing items 349-368 of 947

    • Geochemistry of deep-sea hydrothermal vent fluids from the Mid-Cayman Rise, Caribbean Sea 

      McDermott, Jill M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2015-02)
      This thesis examines the controls on organic, inorganic, and volatile species distributions in hydrothermal fluids venting at Von Damm and Piccard, two vent fields at the ultraslow spreading Mid-Cayman Rise, Earth’s deepest ...
    • Geochemistry of hydrothermal fluids from the PACMANUS, Northeast Pual and Vienna Woods hydrothermal fields, Manus Basin, Papua New Guinea 

      Reeves, Eoghan P.; Seewald, Jeffrey S.; Saccocia, Peter J.; Bach, Wolfgang; Craddock, Paul R.; Shanks, Wayne C.; Sylva, Sean P.; Walsh, Emily; Pichler, Thomas; Rosner, Martin (2010-10-29)
      Processes controlling the composition of seafloor hydrothermal fluids in silicic back-arc or neararc crustal settings remain poorly constrained despite growing evidence for extensive magmatichydrothermal activity in such ...
    • Geochemistry of hydrothermal vent fluids from the northern Juan de Fuca Ridge 

      Cruse, Anna M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2003-02)
      The presence of aqueous organic compounds derived from sedimentary organic matter has the potential to influence a range of chemical processes in hydrothermal vent environments. For example, hydrothermal alteration ...
    • Geochemistry of low-molecular weight hydrocarbons in hydrothermal fluids from Middle Valley, northern Juan de Fuca Ridge 

      Cruse, Anna M.; Seewald, Jeffrey S. (2006-01-10)
      Hydrothermal vent fluids from Middle Valley, a sediment-covered mid-ocean ridge on the northern Juan de Fuca Ridge, were sampled in July, 2000. Eight different vents with exit temperatures of 186 to 281°C were sampled from ...
    • Geochemistry of slow-growing corals : reconstructing sea surface temperature, salinity and the North Atlantic Oscillation 

      Goodkin, Nathalie F. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2007-06)
      A 225-year old coral from the south shore of Bermuda (64°W, 32°N) provides a record of decadal-to-centennial scale climate variability. The coral was collected live, and sub-annual density bands seen in x-radiographs ...
    • Geochemistry of surface sediments from the fjords of Northern Chilean Patagonia (44–47°S) : spatial variability and implications for paleoclimate reconstructions 

      Bertrand, Sebastien; Hughen, Konrad A.; Sepulveda, Julio; Pantoja, Silvio (2011-09-22)
      The Patagonian fjords have a clear potential to provide high-resolution sedimentary and geochemical records of past climate and environmental change in the Southern Andes. To improve our ability to interpret these proxy ...
    • Geology, geochemistry and earthquake history of Lṑihi Seamount, Hawaìi's youngest volcano 

      Garcia, Michael O.; Caplan-Auerbach, Jackie; De Carlo, Eric H.; Kurz, Mark D.; Becker, N. (2005-09-20)
      A half century of investigations are summarized here on the youngest Hawaiian volcano, Lō`ihi Seamount. It was discovered in 1952 following an earthquake swarm. Surveying in 1954 determined it has an elongate shape, which ...
    • Geomicrobiology of nitrogen in a coastal aquifer : isotopic and molecular methods to examine nitrification and denitrification in groundwater 

      Rogers, Daniel R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2010-06)
      Excess nitrogen input is deleterious to coastal waters, resulting in deterioration of the water quality, increases in harmful algal blooms and disease in commercial fish stocks. A significant portion of this nitrogen ...
    • Geomicrobiology of the ocean crust : the phylogenetic diversity, abundance, and distribution of microbial communities inhabiting basalt and implications for rock alteration processes 

      Santelli, Cara M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2007-06)
      Basaltic ocean crust has the potential to host one of the largest endolithic communities on Earth. This portion of the biosphere, however, remains largely unexplored. In this study, we utilize molecular biological, ...
    • GEOTRACES IC1 (BATS) contamination-prone trace element isotopes Cd, Fe, Pb, Zn, Cu, and Mo intercalibration 

      Boyle, Edward A.; John, Seth G.; Abouchami, Wafa; Adkins, Jess F.; Echegoyen-Sanz, Yolanda; Ellwood, Michael J.; Flegal, A. Russell; Fornace, Kyrstin L.; Gallon, Celine; Galer, Steve; Gault-Ringold, Melanie; Lacan, Francois; Radic, Amandine; Rehkamper, Mark; Rouxel, Olivier J.; Sohrin, Yoshiki; Stirling, Claudine H.; Thompson, Claire; Vance, Derek; Xue, Zichen; Zhao, Ye (Association for the Sciences of Limnology and Oceanography, 2012-09)
      We report data on the isotopic composition of cadmium, copper, iron, lead, zinc, and molybdenum at the GEOTRACES IC1 BATS Atlantic intercalibration station. In general, the between lab and within-lab precisions are adequate ...
    • GEOTRACES intercalibration of 230Th, 232Th, 231Pa, and prospects for 10Be 

      Anderson, Robert F.; Fleisher, Martin Q.; Robinson, Laura F.; Edwards, R. Lawrence; Hoff, John A.; Moran, S. Bradley; Rutgers van der Loeff, Michiel M.; Thomas, Alexander L.; Roy-Barman, Matthieu; Francois, Roger (Association for the Sciences of Limnology and Oceanography, 2012-04)
      Nineteen labs representing nine nations participated in the GEOTRACES intercalibration initiative that determined concentrations of 232Th, 230Th, 231Pa, or 10Be in seawater, suspended particles or sediments. Results generally ...
    • 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 R.; 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 ...
    • GEOTRACES radium isotopes interlaboratory comparison experiment 

      Charette, Matthew A.; Dulaiova, Henrieta; Gonneea, Meagan E.; Henderson, Paul B.; Moore, Willard S.; Scholten, Jan C.; Pham, Mai Khanh (Association for the Sciences of Limnology and Oceanography, 2012-06)
      In anticipation of the international GEOTRACES program, which will study the global marine biogeochemistry of trace elements and isotopes, we conducted a multi-lab intercomparison for radium isotopes. The intercomparison ...
    • Glacial influence on the geochemistry of riverine iron fluxes to the Gulf of Alaska and effects of deglaciation 

      Schroth, Andrew W.; Crusius, John; Chever, Fanny; Bostick, Benjamin C.; Rouxel, Olivier J. (American Geophysical Union, 2011-08-25)
      Riverine iron (Fe) derived from glacial weathering is a critical micronutrient source to ecosystems of the Gulf of Alaska (GoA). Here we demonstrate that the source and chemical nature of riverine Fe input to the GoA could ...
    • 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 ...
    • Global assessment of ocean carbon export by combining satellite observations and food-web models 

      Siegel, David A.; Buesseler, Ken O.; Doney, Scott C.; Sailley, Sevrine F.; Behrenfeld, Michael J.; Boyd, Philip W. (John Wiley & Sons, 2014-03-10)
      The export of organic carbon from the surface ocean by sinking particles is an important, yet highly uncertain, component of the global carbon cycle. Here we introduce a mechanistic assessment of the global ocean carbon ...
    • Global carbon budget 2013 

      Le Quere, Corinne; Peters, Glen P.; Andres, Robert J.; Andrew, Robbie M.; Boden, T. A.; Ciais, Philippe; Friedlingstein, Pierre; Houghton, Richard A.; Marland, G.; Moriarty, Roisin; Sitch, Stephen; Tans, Pieter P.; Arneth, Almut; Arvanitis, A.; Bakker, Dorothee C. E.; Bopp, Laurent; Canadell, Josep G.; Chini, Louise Parsons; Doney, Scott C.; Harper, A.; Harris, Ian; House, Jo I.; Jain, Atul K.; Jones, S. D.; Kato, Etsushi; Keeling, Ralph F.; Klein Goldewijk, Kees; Kortzinger, A.; Koven, Charles; Lefevre, N.; Maignan, F.; Omar, A.; Ono, Tsuneo; Park, Geun-Ha; Pfeil, Benjamin; Poulter, Benjamin; Raupach, Michael R.; Regnier, P.; Rodenbeck, C.; Saito, Shu; Schwinger, Jorg; Segschneider, J.; Stocker, B. D.; Takahashi, Taro; Tilbrook, Bronte; van Heuven, Steven; Viovy, N.; Wanninkhof, Rik; Wiltshire, A.; Zaehle, Sonke (Copernicus Publications., 2014-06-17)
      Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere is important to better understand the global carbon cycle, support the ...
    • Global carbon budget 2014 

      Le Quere, Corinne; Moriarty, Roisin; Andrew, Robbie M.; Peters, Glen P.; Ciais, Philippe; Friedlingstein, Pierre; Jones, S. D.; Sitch, Stephen; Tans, Pieter P.; Arneth, Almut; Boden, T. A.; Bopp, Laurent; Bozec, Yann; Canadell, Josep G.; Chini, Louise Parsons; Chevallier, F.; Cosca, C. E.; Harris, Ian; Hoppema, Mario; Houghton, Richard A.; House, Jo I.; Jain, Atul K.; Johannessen, T.; Kato, Etsushi; Keeling, R. F.; Kitidis, Vassilis; Klein Goldewijk, Kees; Koven, Charles; Landa, C. S.; Landschutzer, Peter; Lenton, A.; Lima, Ivan D.; Marland, G.; Mathis, Jeremy T.; Metzl, Nicolas; Nojiri, Yukihiro; Olsen, Are; Ono, Tsuneo; Peng, S.; Peters, W.; Pfeil, Benjamin; Poulter, Benjamin; Raupach, Michael R.; Regnier, P.; Rodenbeck, C.; Saito, Shu; Salisbury, Joseph E.; Schuster, Ute; Schwinger, Jorg; Seferian, Roland; Segschneider, J.; Steinhoff, Tobias; Stocker, B. D.; Sutton, Adrienne J.; Takahashi, Taro; Tilbrook, Bronte; van der Werf, Guido R.; Viovy, N.; Wang, Y.-P.; Wanninkhof, Rik; Wiltshire, A.; Zeng, Ning (Copernicus Publications, 2015-05-08)
      Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere is important to better understand the global carbon cycle, support the ...
    • Global Carbon Budget 2015 

      Le Quere, Corinne; Moriarty, Roisin; Andrew, Robbie M.; Canadell, Josep G.; Sitch, Stephen; Korsbakken, Jan Ivar; Friedlingstein, Pierre; Peters, Glen P.; Andres, Robert J.; Boden, T. A.; Houghton, Richard A.; House, Jo I.; Keeling, Ralph F.; Tans, Pieter P.; Arneth, Almut; Bakker, Dorothee C. E.; Barbero, Leticia; Bopp, Laurent; Chang, J.; Chevallier, F.; Chini, Louise Parsons; Ciais, Philippe; Fader, Marianela; Feely, Richard A.; Gkritzalis, Thanos; Harris, Ian; Hauck, Judith; Ilyina, Tatiana; Jain, Atul K.; Kato, Etsushi; Kitidis, Vassilis; Klein Goldewijk, Kees; Koven, Charles; Landschutzer, Peter; Lauvset, Siv K.; Lefevre, N.; Lenton, A.; Lima, Ivan D.; Metzl, Nicolas; Millero, Frank J.; Munro, David R.; Murata, Akihiko; Nabel, Julia E. M. S.; Nakaoka, Shin-ichiro; Nojiri, Yukihiro; O'Brien, Kevin; Olsen, Are; Ono, Tsuneo; Perez, Fiz F.; Pfeil, Benjamin; Pierrot, Denis; Poulter, Benjamin; Rehder, Gregor; Rodenbeck, C.; Saito, Shu; Schuster, Ute; Schwinger, Jorg; Seferian, Roland; Steinhoff, Tobias; Stocker, B. D.; Sutton, Adrienne J.; Takahashi, Taro; Tilbrook, Bronte; van der Laan-Luijkx, I. T.; van der Werf, Guido R.; van Heuven, Steven; Vandemark, Doug; Viovy, N.; Wiltshire, A.; Zaehle, Sonke; Zeng, Ning (Copernicus Publications, 2015-12-07)
      Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere is important to better understand the global carbon cycle, support the ...
    • Global estimate of submarine groundwater discharge based on an observationally constrained radium isotope model 

      Kwon, Eun Young; Kim, Guebuem; Primeau, Francois W.; Moore, Willard S.; Cho, Hyung-Mi; DeVries, Timothy; Sarmiento, Jorge L.; Charette, Matthew A.; Cho, Yang-Ki (John Wiley & Sons, 2014-12-03)
      Along the continental margins, rivers and submarine groundwater supply nutrients, trace elements, and radionuclides to the coastal ocean, supporting coastal ecosystems and, increasingly, causing harmful algal blooms and ...