Now showing items 2171-2190 of 6004

    • 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, ...
    • Geomorphology and Neogene tectonic evolution of the Palomares continental margin (Western Mediterranean) 

      Gomez de la Peña, Laura; Gracia, Eulalia; Munoz, Araceli; Acosta, Juan; Gomez-Ballesteros, María; Ranero, Cesar R.; Uchupi, Elazar (2016-03)
      The Palomares continental margin is located in the southeastern part of Spain. The margin main structure was formed during Miocene times, and it is currently part of the wide deformation zone characterizing the region ...
    • Geomorphology and shallow structure of a segment of the Atlantic Patagonian margin 

      Munoz, Araceli; Acosta, Juan; Cristobo, J.; Druet, M.; Uchupi, Elazar; Atlantis Group 1 (2013-03)
      We study an area little known of the Atlantic Patagonian margin from 44˚30’S to 47˚40’S and from 59˚W to nearly 61˚W. The multi-beam bathymetry coupled with high resolution seismic reflection profiles, have provided details ...
    • Geophysical and geochemical constraints on the evolution of oceanic lithosphere from formation to subduction 

      Horning, Gregory W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2017-02)
      This thesis investigates the evolution of the oceanic lithosphere in a broad sense from formation to subduction, in a focused case at the ridge, and in a focused case proximal to subduction. In general, alteration of the ...
    • Geophysical and geochemical survey of a large marine pockmark on the Malin Shelf, Ireland 

      Szpak, Michal T.; Monteys, Xavier; O'Reilly, S.; Simpson, A. J.; Garcia, Xavier; Evans, Rob L.; Allen, C. C. R.; McNally, D. J.; Courtier-Murias, D.; Kelleher, B. P. (American Geophysical Union, 2012-01-19)
      Marine pockmarks are a specific type of seabed geological setting resembling craters or pits and are considered seabed surface expressions of fluid flow in the subsurface. A large composite pockmark on the Malin Shelf, off ...
    • Geophysical evidence from the MELT area for compositional controls on oceanic plates 

      Evans, Rob L.; Hirth, Greg; Baba, Kiyoshi; Forsyth, Donald W.; Chave, Alan D.; Mackie, Randall L. (2005-06-29)
      Magnetotelluric (MT) and seismic data, collected during the MELT experiment at the Southern East Pacific Rise (SEPR) constrain the distribution of melt beneath this mid-ocean-ridge spreading center and also the evolution ...
    • Geophysical modeling of collapse-prone zones at Rumble III seamount, southern Pacific Ocean, New Zealand 

      Tontini, F. Caratori; de Ronde, Cornel E. J.; Kinsey, James C.; Soule, Samuel A.; Yoerger, Dana R.; Cocchi, L. (John Wiley & Sons, 2013-10-18)
      Catastrophic collapses of submarine volcanoes have the potential to generate major tsunami, threatening many coastal populations. Recognizing the difficulties surrounding anticipations of these events, quantitative assessment ...
    • Geophysical signatures of oceanic core complexes 

      Blackman, Donna K.; Canales, J. Pablo; Harding, Alistair J. (John Wiley & Sons, 2009-05-05)
      Oceanic core complexes (OCCs) provide access to intrusive and ultramafic sections of young lithosphere and their structure and evolution contain clues about how the balance between magmatism and faulting controls the style ...
    • Georges Bank : a leaky incubator of Alexandrium fundyense blooms 

      McGillicuddy, Dennis J.; Townsend, David W.; Keafer, Bruce A.; Thomas, Maura A.; Anderson, Donald M. (2012-09-21)
      A series of oceanographic surveys on Georges Bank document variability of populations of the toxic dinoflagellate Alexandrium fundyense on time scales ranging from synoptic to seasonal to interannual. Blooms of A. fundyense ...
    • Geostrophic vortex dynamics 

      Polvani, Lorenzo M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1988-08)
      By generalizing the method of contour dynamics to the quasigeostrophic two layer model, we have proposed and solved a number of fundamental problems in the dynamics of rotating and stratified vorticity fields. A variety ...
    • Geothermal heat flux at the COST B-2 and B-3 Wells, U. S. Atlantic continental margin 

      Della Vedova, Bruno; von Herzen, Richard P. (Woods Hole Oceanographic Institution, 1987-07)
      Heat flow estimates at two sites on the U.S. Atlantic continental margin are presented. An estimate of the heat flowing from the basement also has been obtained. About 4.8 km of sediments penetrated at the COST B-2 and ...
    • Geothermal heat flux from hydrothermal plumes on the Juan de Fuca ridge 

      Bemis, Karen G. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1990-05)
      Estimates of the heat output of hydrothermal vents, identified along the Endeavor and Southern Segments of the Juan de Fuca Ridge, are used to evaluate the total heat flux associated with hydrothermal circulation for ...
    • Geothermal processes at the Galapagos Spreading Center 

      Green, Kenneth Edward (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1980-02)
      The measurements of the heat flow field of the Galapagos Spreading Center in an area of about 570 km2 reveal the planform of the conductive flux and permit the first truly areal estimate of the near-axis heat flux for ...
    • 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 ...
    • Gibraltar experiment : a plan for dynamic and kinematic investigations of strait mixing, exchange and turbulence 

      Bryden, Harry L.; Kinder, Thomas H. (Woods Hole Oceanographic Institution, 1986-08)
      The flow through the Strait of Gibraltar has always held a special fascination for oceanographers. Attempts to understand and measure the strong currents in the Strait stimulated many of the early advances in oceanography ...