Now showing items 306-325 of 5614

    • Are there eco-metrics for fisheries? 

      Steele, John H. (2005-11-03)
      Ecosystem based management of marine resources is a worthy ideal. At present, however, the science is unable to measure and relate the fundamental concepts of diversity, productivity and resilience required for management ...
    • Area selection for diamonds using magnetotellurics : examples from southern Africa 

      Jones, Alan G.; Evans, Rob L.; Muller, Mark R.; Hamilton, Mark P.; Miensopust, Marion P.; Garcia, Xavier; Cole, Patrick; Ngwisanyi, Tiyapo; Hutchins, David; Fourie, C. J. S.; Jelsma, Hielke; Aravanis, Theo; Pettit, Wayne; Webb, Susan J.; Webb, Jan; Collins, Louise; Hogg, Colin; Horan, Clare; Spratt, Jessica; Wallace, Gerry; Chave, Alan D.; Cole, Janine; Stettler, Raimund; Tshoso, G.; Mountford, Andy; Cunion, Ed; Khoza, T. David; Share, Pieter-Ewald; SAMTEX Team (2009-06-05)
      Southern Africa, particularly the Kaapvaal Craton, is one of the world’s best natural laboratories for studying the lithospheric mantle given the wealth of xenolith and seismic data that exist for it. The Southern African ...
    • Argo array observation of ocean heat content changes induced by tropical cyclones in the north Pacific 

      Park, Jong Jin; Kwon, Young-Oh; Price, James F. (American Geophysical Union, 2011-12-16)
      In situ observations from the autonomous Argo float array are used to assess the basin-averaged ocean heat content change driven by tropical cyclones (TCs) in the North Pacific for 2000–2008. A new statistical approach ...
    • Argo Development Program : final report 

      Woods Hole Oceanographic Institution (Woods Hole Oceanographic Institution, 1986-06)
      The purpose of the contract was to develop and place into operational status a new, combined research/inspection unmanned vehicle system called ARGO/JASON. ARGO is a high altitude search and survey vehicle for use in deep ...
    • The Argo Program : observing the global ocean with profiling floats 

      Roemmich, Dean; Johnson, Gregory C.; Riser, Stephen C.; Davis, Russ E.; Gilson, John; Owens, W. Brechner; Garzoli, Silvia L.; Schmid, Claudia; Ignaszewski, Mark (Oceanography Society, 2009-06)
      The Argo Program has created the first global array for observing the subsurface ocean. Argo arose from a compelling scientific need for climate-relevant ocean data; it was made possible by technology development and ...
    • Aridification of the Indian subcontinent during the Holocene : implications for landscape evolution, sedimentation, carbon cycle, and human civilizations 

      Ponton, Camilo (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2012-06)
      The Indian monsoon affects the livelihood of over one billion people. Despite the importance of climate to society, knowledge of long-term monsoon variability is limited. This thesis provides Holocene records of monsoon ...
    • Array data acquisition with wireless LAN telemetry as applied to shallow water tomography in the Barents Sea 

      von der Heydt, Keith; Kemp, John N.; Lynch, James F.; Miller, J.; Chiu, Ching-Sang (Woods Hole Oceanographic Institution, 1992-12)
      This report describes the application of a new technique of digital radio telemetry, based on a recently available wireless Local Area Network Ethernet adapter, to the need for realtime transmission of data from a vertical ...
    • Array processing and forward modeling methods for the analysis of stiffened, fluid-loaded cylindrical shells 

      Bondaryk, Joseph E. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1994-03)
      This thesis investigates array processing and forward modeling methods for the analysis of experimental, structural acoustic data to understand wave propagation on fluid-loaded, elastic, cylindrical shells in the ...
    • Arsenate resistance in the unicellular marine diazotroph Crocosphaera watsonii 

      Dyhrman, Sonya T.; Haley, Sheean T. (Frontiers Media, 2011-10-25)
      The toxic arsenate ion can behave as a phosphate analog, and this can result in arsenate toxicity especially in areas with elevated arsenate to phosphate ratios like the surface waters of the ocean gyres. In these systems, ...
    • Ascent exhalations of Antarctic fur seals : a behavioural adaptation for breath-hold diving? 

      Hooker, Sascha K.; Miller, Patrick J. O.; Johnson, Mark P.; Cox, Oliver P.; Boyd, Ian L. (Royal Society, 2005-02-22)
      Novel observations collected from video, acoustic and conductivity sensors showed that Antarctic fur seals consistently exhale during the last 50–85% of ascent from all dives (10–160 m, n > 8000 dives from 50 seals). The ...
    • Ascidians at the Pacific and Atlantic entrances to the Panama Canal 

      Carman, Mary R.; Bullard, Stephan G.; Rocha, Rosana M.; Lambert, Gretchen; Dijkstra, Jennifer A.; Roper, James J.; Goodwin, Anne M.; Carman, Mimi M.; Vail, Elisabete M. (Regional Euro-Asian Biological Invasions Centre (REABIC), 2011-08-12)
      The Panama Canal region is susceptible to non-native species introductions due to the heavy international shipping traffic through the area. Ascidian introductions are occurring worldwide but little is known about ...
    • Aspects of the biogeochemistry of carbohydrates in aquatic environments 

      Mopper, Kenneth (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1973-06)
      The goal of this thesis is to examine the distribution and diagenesis of carbohydrates in aquatic environments. The following questions are studied: what is the carbohydrate composition of sediment in different environments ...
    • Aspiration and outflow of the intermediate water in the East/Japan Sea through the Tsugaru Strait 

      Park, Jong Jin; Kim, Kuh; Yang, Joon-Yong (American Geophysical Union, 2008-04-01)
      Outflow of the intermediate water in the East/Japan Sea through the Tsugaru Strait is inferred from the fact that profiling floats deployed below the sill depth in the central East/Japan Sea moved out to the Northwest ...
    • Assessing high-resolution analysis of surface heat fluxes in the Gulf Stream region 

      Jin, Xiangze; Yu, Lisan (John Wiley & Sons, 2013-10-15)
      A satellite-based global analysis of high-resolution (0.25°) ocean surface turbulent latent and sensible heat fluxes was developed by the objectively analyzed air-sea fluxes (OAFlux) project. Resolving air-sea flux down ...
    • Assessing performance of Bayesian state-space models fit to Argos satellite telemetry locations processed with Kalman filtering 

      Silva, Monica A.; Jonsen, Ian; Russell, Deborah J. F.; Prieto, Rui; Thompson, Dave; Baumgartner, Mark F. (Public Library of Science, 2014-03-20)
      Argos recently implemented a new algorithm to calculate locations of satellite-tracked animals that uses a Kalman filter (KF). The KF algorithm is reported to increase the number and accuracy of estimated positions over ...
    • Assessing sedimentary records of paleohurricane activity using modeled hurricane climatology 

      Woodruff, Jonathan D.; Donnelly, Jeffrey P.; Emanuel, Kerry A.; Lane, D. Philip (American Geophysical Union, 2008-09-18)
      Patterns of overwash deposition observed within back-barrier sediment archives can indicate past changes in tropical cyclone activity; however, it is necessary to evaluate the significance of observed trends in the context ...
    • Assessing the health of the U.S. west coast with a regional-scale application of the Ocean Health Index 

      Halpern, Benjamin S.; Longo, Catherine; Scarborough, Courtney; Hardy, Darren; Best, Benjamin D.; Doney, Scott C.; Katona, Steven K.; McLeod, Karen L.; Rosenberg, Andrew A.; Samhouri, Jameal F. (Public Library of Science, 2014-06-18)
      Management of marine ecosystems increasingly demands comprehensive and quantitative assessments of ocean health, but lacks a tool to do so. We applied the recently developed Ocean Health Index to assess ocean health in the ...
    • Assessing the uncertainties of model estimates of primary productivity in the tropical Pacific Ocean 

      Friedrichs, Marjorie A. M.; Carr, Mary-Elena; Barber, Richard T.; Scardi, Michele; Antoine, David; Armstrong, Robert A.; Asanuma, Ichio; Behrenfeld, Michael J.; Buitenhuis, Erik T.; Chai, Fei; Christian, James R.; Ciotti, Aurea M.; Doney, Scott C.; Dowell, Mark; Dunne, John P.; Gentili, Bernard; Gregg, Watson; Hoepffner, Nicolas; Ishizaka, Joji; Kameda, Takahiko; Lima, Ivan D.; Marra, John F.; Melin, Frederic; Moore, J. Keith; Morel, Andre; O'Malley, Robert T.; O'Reilly, Jay; Saba, Vincent S.; Schmeltz, Marjorie; Smyth, Tim J.; Tjiputra, Jerry; Waters, Kirk; Westberry, Toby K.; Winguth, Arne (2008-03)
      Depth-integrated primary productivity (PP) estimates obtained from satellite ocean color based models (SatPPMs) and those generated from biogeochemical ocean general circulation models (BOGCMs) represent a key resource ...
    • An assessment of Arctic Ocean freshwater content changes from the 1990s to the 2006-2008 period 

      Rabe, Benjamin; Karcher, Michael; Schauer, Ursula; Toole, John M.; Krishfield, Richard A.; Pisarev, Sergey; Kauker, Frank; Gerdes, Rudiger; Kikuchi, Takashi (2010-12-10)
      Unprecedented summer-season sampling of the Arctic Ocean during the period 2006−2008 makes possible a quasi-synoptic estimate of liquid freshwater (LFW) inventories in the Arctic Ocean basins. In comparison to observations ...
    • Assessment of flagellate diversity at deep-sea hydrothermal vents using the combined approach of culture-dependent and culture-independent methods 

      Atkins, Michael S. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2000-05)
      Eighteen strains of flagellated protists representing 9 species were isolated and cultured from four deep-sea hydrothermal vents in the Eastern Pacific Ocean: Juan de Fuca Ridge, Guaymas Basin, and both 21°N and 9°N on ...