Now showing items 2912-2931 of 8602

    • Flux measurements of explosive degassing using a yearlong hydroacoustic record at an erupting submarine volcano 

      Dziak, Robert P.; Baker, Edward T.; Shaw, Alison M.; Bohnenstiehl, DelWayne R.; Chadwick, William W.; Haxel, Joseph H.; Matsumoto, Haru; Walker, Sharon L. (American Geophysical Union, 2012-11-29)
      The output of gas and tephra from volcanoes is an inherently disorganized process that makes reliable flux estimates challenging to obtain. Continuous monitoring of gas flux has been achieved in only a few instances at ...
    • Fluxes and gas transfer rates of the biogenic trace gas DMS derived from atmospheric gradients 

      Zemmelink, Hendrik J.; Dacey, John W. H.; Hintsa, Eric J.; McGillis, Wade R.; Gieskes, Winfried W. C.; Klaassen, Wim; de Groot, Henk W.; Baar, Hein J. W. de (American Geophysical Union, 2004-06-30)
      Gas transfer rates were determined from vertical profile measurements of atmospheric dimethylsulfide (DMS) gradients over the equatorial Pacific Ocean obtained during the GasEx-2001 cruise. A quadratic relationship between ...
    • Fluxes, dynamics and chemistry of particulates in the ocean 

      Gardner, Wilford D. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1977-10)
      Sediment traps designed to yield quantitative data of particulate fluxes have been deployed and successfully recovered on four moorings in the deep sea. The traps were designed after extensive calibration of different ...
    • The Flying Fish, an untethered oceanographic sensor platform with acoustic homing capability 

      Hoyt, Joshua King (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1986-05)
      The Flying Fish is an autonomous, streamlined, gravity driven underwater vehicle of high speed (15 knots) vertical excursions to depths of 6000 meters. This prototype uses short baseline acoustic interferometry to guide ...
    • Focus detection from digital in-line holograms based on spectral l1 norms 

      Li, Weichang; Loomis, Nicholas C.; Hu, Qiao; Davis, Cabell S. (2007-05-16)
      In this paper a rapid focus detection technique is developed for objects imaged using digital in-line holograms. It differs from previous approaches in that it is based directly on the spectral content of the object ...
    • Focusing of upward fluid migration beneath volcanic arcs : effect of mineral grain size variation in the mantle wedge 

      Wada, Ikuko; Behn, Mark D. (John Wiley & Sons, 2015-11-13)
      We use numerical models to investigate the effects of mineral grain size variation on fluid migration in the mantle wedge at subduction zones and on the location of the volcanic arc. Previous coupled thermal-grain size ...
    • Foehn winds link climate-driven warming to ice shelf evolution in Antarctica 

      Cape, Mattias R.; Vernet, Maria; Skvarca, Pedro; Marinsek, Sebastian; Scambos, Ted; Domack, Eugene (John Wiley & Sons, 2015-11-03)
      Rapid warming of the Antarctic Peninsula over the past several decades has led to extensive surface melting on its eastern side, and the disintegration of the Prince Gustav, Larsen A, and Larsen B ice shelves. The warming ...
    • Following a foraging fish-finder : diel habitat use of Blainville's beaked whales revealed by echolocation 

      Arranz, Patricia; Aguilar De Soto, Natacha; Madsen, Peter T.; Brito, Alberto; Bordes, Fernando; Johnson, Mark P. (Public Library of Science, 2011-12-07)
      Simultaneous high resolution sampling of predator behavior and habitat characteristics is often difficult to achieve despite its importance in understanding the foraging decisions and habitat use of predators. Here we tap ...
    • Food benefit and climate warming potential of nitrogen fertilizer uses in China 

      Tian, Hanqin; Lu, Chaoqun; Melillo, Jerry M.; Ren, Wei; Huang, Yao; Xu, Xiaofeng; Liu, Mingliang; Zhang, Chi; Chen, Guangsheng; Pan, Shufen; Liu, Jiyuan; Reilly, John M. (IOP Publishing, 2012-10-31)
      Chemical nitrogen (N) fertilizer has long been used to help meet the increasing food demands in China, the top N fertilizer consumer in the world. Growing concerns have been raised on the impacts of N fertilizer uses on ...
    • Food habits of Atlantic white-sided dolphins (Lagenorhynchus acutus) off the coast of New England 

      Craddock, James E.; Polloni, Pamela T.; Hayward, Brett; Wenzel, Frederick W. (U.S. Dept. of Commerce, NOAA NMFS, 2009-07)
      Although the Atlantic white-sided dolphin (Lagenorhynchus acutus) is one of the most common dolphins off New England, little has been documented about its diet in the western North Atlantic Ocean. Current federal ...
    • Food habits of Sowerby’s beaked whales (Mesoplodon bidens) taken in the pelagic drift gillnet fishery of the western North Atlantic 

      Wenzel, Frederick W.; Polloni, Pamela T.; Craddock, James E.; Gannon, Damon P.; Nicolas, John R.; Read, Andrew J.; Rosel, Patricia E. (National Marine Fisheries Service, NOAA, 2013-08)
      We describe the food habits of the Sowerby’s beaked whale (Mesoplodon bidens) from observations of 10 individuals taken as bycatch in the pelagic drift gillnet fishery for Swordfish (Xiphias gladius) in the western ...
    • The footprint of Alaskan tundra fires during the past half-century : implications for surface properties and radiative forcing 

      Rocha, Adrian V.; Loranty, Michael M.; Higuera, Philip E.; Mack, Michelle C.; Hu, Feng Sheng; Jones, Benjamin M.; Breen, Amy L.; Rastetter, Edward B.; Goetz, Scott J.; Shaver, Gaius R. (IOP Publishing, 2012-12-19)
      Recent large and frequent fires above the Alaskan arctic circle have forced a reassessment of the ecological and climatological importance of fire in arctic tundra ecosystems. Here we provide a general overview of the ...
    • Force and length in the mitotic spindle 

      Dumont, Sophie; Mitchison, Timothy J. (2009-07)
      The mitotic spindle assembles to a steady-state length at metaphase through the integrated action of molecular mechanisms that generate and respond to mechanical forces. While molecular mechanisms that produce force have ...
    • Forcing of the Atlantic equatorial deep jets derived from observations 

      Claus, Martin; Greatbatch, Richard J.; Brandt, Peter; Toole, John M. (American Meteorological Society, 2016-11-23)
      The equatorial deep jets (EDJs) are a ubiquitous feature of the equatorial oceans; in the Atlantic Ocean, they are the dominant mode of interannual variability of the zonal flow at intermediate depth. On the basis of more ...
    • Forcing of tropical Atlantic sea surface temperatures during the mid-Pleistocene transition 

      Schefuß, Enno; Sinninghe Damste, Jaap S.; Jansen, J. H. Fred (American Geophysical Union, 2004-12-28)
      We compare a new mid-Pleistocene sea surface temperature (SST) record from the eastern tropical Atlantic to changes in continental ice volume, orbital insolation, Atlantic deepwater ventilation, and Southern Ocean front ...
    • Forecasting effects of sea-level rise and windstorms on coastal and inland ecosystems 

      Hopkinson, Charles S.; Lugo, Ariel E.; Alber, Merryl; Covich, Alan P.; Van Bloem, Skip J. (Ecological Society of America, 2008-06)
      We identify a continental-scale network of sites to evaluate how two aspects of climate change – sea-level rise and intensification of windstorms – will influence the structure, function, and capacity of coastal and inland ...
    • Forensic analysis of the microbiome of phones and shoes 

      Lax, Simon; Hampton-Marcell, Jarrad T.; Gibbons, Sean M.; Colares, Georgia Barguil; Smith, Daniel; Eisen, Jonathan A.; Gilbert, Jack A. (BioMed Central, 2015-05-12)
      Microbial interaction between human-associated objects and the environments we inhabit may have forensic implications, and the extent to which microbes are shared between individuals inhabiting the same space may be relevant ...
    • The forgotten whale : a bibliometric analysis and literature review of the North Atlantic sei whale Balaenoptera borealis 

      Prieto, Rui; Janiger, David; Silva, Monica A.; Waring, Gordon T.; Goncalves, Joao M. A. (2012-07)
      1. A bibliometric analysis of the literature on the sei whale Balaenoptera borealis is presented. Research output on the species is quantified and compared with research on four other whale species. The results show a ...
    • Form, function and flow in the plankton : jet propulsion and filtration by pelagic tunicates 

      Sutherland, Kelly R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2010-02)
      Trade-offs between filtration rate and swimming performance among several salp species with distinct morphologies and swimming styles were compared. Small-scale particle encounter at the salp filtering apparatus was also ...
    • Formation and erosion of the seasonal thermocline in the Kuroshio Extension Recirculation Gyre 

      Cronin, Meghan F.; Bond, Nicholas A.; Farrar, J. Thomas; Ichikawa, Hiroshi; Jayne, Steven R.; Kawai, Yoshimi; Konda, Masanori; Qiu, Bo; Rainville, Luc; Tomita, Hiroyuki (Elsevier Ltd., 2012-07-21)
      Data from the Kuroshio Extension Observatory (KEO) surface mooring are used to analyze the balance of processes affecting the upper ocean heat content and surface mixed layer temperature variations in the Recirculation ...