Now showing items 687-706 of 5413

    • Chemistry, temperature, and faunal distributions at diffuse-flow hydrothermal vents : comparison of two geologically distinct ridge systems 

      Luther, George W.; Gartman, Amy; Yucel, Mustafa; Madison, Andrew S.; Moore, Tommy S.; Nees, Heather A.; Nuzzio, Donald B.; Sen, Arunima; Lutz, Richard A.; Shank, Timothy M.; Fisher, Charles R. (The Oceanography Society, 2012-03)
      Diffuse-flow, low-temperature areas near hydrothermal vents support life via chemosynthesis: hydrogen sulfide (and other reduced chemical compounds) emanating from the subsurface is oxidized with bottom-water oxygen through ...
    • Chemoautotrophy at deep-sea vents : past, present, and future 

      Sievert, Stefan M.; Vetriani, Costantino (The Oceanography Society, 2012-03)
      Chemolithoautotrophic microorganisms are at the nexus of hydrothermal systems by effectively transferring the energy from the geothermal source to the higher trophic levels. While the validity of this conceptual framework ...
    • Chemosynthetic communities in the deep sea : ecological studies 

      Van Dover, Cindy L. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1989-05)
      Deep-sea benthic communities dependent on chemosynthetic primary production are associated with areas of active venting of chemically-modified seawater. Patterns in the distribution of species that occur at hydrothermal ...
    • Chlorophyll diagenesis in the water column and sediments of the Black Sea 

      King, Linda L. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1992-11)
      This thesis examines the degradation pathways of chlorophyll in the Black Sea water column and sediments. Measurements are made of total chlorophyll in sediment traps from two locations and depths in the water column, ...
    • The choreography of belonging : toothed whale spatial cohesion and acoustic communication 

      Macfarlane, Nicholas B. W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2016-02)
      To maintain the benefits of group membership, social animals need mechanisms to stay together and reunite if separated. This thesis explores the acoustic signals that dolphins use to overcome this challenge and mediate ...
    • Chromium isotope fractionation during subduction-related metamorphism, black shale weathering, and hydrothermal alteration 

      Wang, Xiangli; Planavsky, Noah J.; Reinhard, Christopher T.; Zou, Huijuan; Ague, Jay J.; Wu, Yuanbao; Gill, Benjamin C.; Schwarzenbach, Esther M.; Peucker-Ehrenbrink, Bernhard (2016-01)
      Chromium (Cr) isotopes are an emerging proxy for redox processes at Earth’s surface. However, many geological reservoirs and isotope fractionation processes are still not well understood. The purpose of this contribution ...
    • Ciliates along oxyclines of permanently stratified marine water columns 

      Edgcomb, Virginia P.; Pachiadaki, Maria G. (2014-02)
      Studies of microbial communities in areas of the world where permanent marine water column oxyclines exist suggest they are ‘hotspots’ of microbial activity, and that these water features and the anoxic waters below them ...
    • Circadian clocks in the cnidaria : environmental entrainment, molecular regulation, and organismal outputs 

      Reitzel, Adam M.; Tarrant, Ann M.; Levy, Oren (2013-03-26)
      The circadian clock is a molecular network that translates predictable environmental signals, such as light levels, into organismal responses, including behavior and physiology. Regular oscillations of the molecular ...
    • Circulation and convection in the Irminger Sea 

      Våge, Kjetil (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2010-02)
      Aspects of the circulation and convection in the Irminger Sea are investigated using a variety of in-situ, satellite, and atmospheric reanalysis products. Westerly Greenland tip jet events are intense, small-scale wind ...
    • Circulation and exchange in choked marginal seas 

      Pratt, Lawrence J.; Spall, Michael A. (American Meteorological Society, 2008-12)
      A theory for the exchange between a rotating, buoyancy-forced marginal sea and an ocean is developed and tested numerically. Cooling over the marginal sea leads to sinking and sets up a two-layer exchange flow, with a warm ...
    • Circulation and intrusions northeast of Taiwan : chasing and predicting uncertainty in the cold dome 

      Gawarkiewicz, Glen G.; Jan, Sen; Lermusiaux, Pierre F.J.; McClean, Julie L.; Centurioni, Luca R.; Taylor, Kevin; Cornuelle, Bruce D.; Duda, Timothy F.; Wang, Joe; Yang, Yiing-Jang; Sanford, Thomas B.; Lien, Ren-Chieh; Lee, Craig M.; Lee, Ming-An; Leslie, Wayne; Haley, Patrick J.; Niiler, Pearn P.; Gopalakrishnan, Ganesh; Velez-Belchi, Pedro; Lee, Dong-Kyu; Kim, Yoo Yin (The Oceanography Society, 2011-12)
      An important element of present oceanographic research is the assessment and quantification of uncertainty. These studies are challenging in the coastal ocean due to the wide variety of physical processes occurring on a ...
    • Circulation and water mass transformation in a model of the Chukchi Sea 

      Spall, Michael A. (American Geophysical Union, 2007-05-11)
      The circulation and water mass transformation in a regional ocean-ice model of the Chukchi Sea are discussed. The model has horizontal resolution of O(4 km), is forced by fluxes derived from daily NCEP reanalysis fields, ...
    • Circulation around a thin zonal island 

      Wells, Judith R.; Helfrich, Karl R. (Cambridge University Press, 2001-06-22)
      Laboratory and numerical experiments are used to study flow of a uniform-density fluid on the [beta]-plane around a thin zonally elongated island (or ridge segment in the abyss). This orientation is chosen specifically to ...
    • Circulation in upper layers of southern North Atlantic deduced with use of isentropic analysis 

      Montgomery, Raymond B. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1938-08)
      Except for the presence in most localities of a shallow homogeneous surface layer and of a relatively homogeneous and deeper bottom layer, the oceans of the temperate and tropical regions are stratified and vertically ...
    • Circulation of the North Atlantic Ocean from altimetry and the Gravity Recovery and Climate Experiment geoid 

      Jayne, Steven R. (American Geophysical Union, 2006-03-04)
      We discuss the ocean circulation derived from the temporally averaged sea surface height, which is referenced to the recently released geoid from the Gravity Recovery and Climate Experiment (GRACE) mission (GRACE Gravity ...
    • Circulation, eddies, oxygen, and nutrient changes in the eastern tropical South Pacific Ocean 

      Czeschel, Rena; Stramma, Lothar; Weller, Robert A.; Fischer, Tim (Copernicus Publications on behalf of the European Geosciences Union, 2015-06-22)
      A large subsurface oxygen deficiency zone is located in the eastern tropical South Pacific Ocean (ETSP). The large-scale circulation in the eastern equatorial Pacific and off the coast of Peru in November/December 2012 ...
    • Circulations and water mass balances in the Brazil Basin 

      Zhang, Huai-Min (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1991-09)
      Based on the Levitus atlas, we find that the application of the Montgomery streamfunction to the isopycnal surfaces induces an error which can not be ignored in some regions in the ocean. The error arises from the sloping ...
    • Cirene : air-sea iInteractions in the Seychelles-Chagos thermocline ridge region 

      Vialard, J.; Duvel, J. P.; McPhaden, Michael J.; Bouruet-Aubertot, P.; Ward, Brian; Key, E.; Bourras, D.; Weller, Robert A.; Minnett, Peter; Weill, A.; Cassou, Christophe; Eymard, L.; Fristedt, T.; Basdevant, C.; Dandonneau, Y.; Duteil, O.; Izumo, T.; de Boyer Montegut, C.; Masson, S.; Marsac, F.; Menkes, C.; Kennan, S. (American Meteorological Society, 2009-01)
      The Vasco—Cirene program ex-plores how strong air—sea inter-actions promoted by the shallow thermocline and high sea surface temperature in the Seychelles—Chagos thermocline ridge results in marked variability at synoptic, ...
    • Classification of broadband echoes from prey of a foraging Blainville's beaked whale 

      Jones, Benjamin A.; Stanton, Timothy K.; Lavery, Andone C.; Johnson, Mark P.; Madsen, Peter T.; Tyack, Peter L. (Acoustical Society of America, 2008-03)
      Blainville's beaked whales (Mesoplodon densirostris) use broadband, ultrasonic echolocation signals with a −10 dB bandwidth from 26 to 51 kHz to search for, localize, and approach prey that generally consist of mid-water ...
    • Claus Prodehl and Walter D. Mooney : Exploring the earth’s crust: history and results of controlled-source seismology [Book review] 

      Stephen, Ralph A. (2014-04-03)
      Prodehl and Mooney have done an impressive service to the community in providing this compendium of controlled-­‐source seismic studies of the earth's crust carried out to 2005. It is a rema ...