Now showing items 2633-2652 of 7685

    • Flow and skin friction over natural rough beds 

      Paola, Christopher (Woods Hole Oceanographic Institution, 1983-06)
      The first of two sets of data reported here, measured over two-dimensional immobile current ripples, comprises skin-friction time series at four streamwise positions and velocity profiles measured to within a few mm of ...
    • Flow convergence caused by a salinity minimum in a tidal channel 

      Warner, John C.; Schoellhamer, David H.; Burau, Jon R.; Schladow, S. Geoffrey (CALFED Science Program, the California Digital Library eScholarship Repository, and the University of California—Davis John Muir Institute of the Environment., 2006-12)
      Residence times of dissolved substances and sedimentation rates in tidal channels are affected by residual (tidally averaged) circulation patterns. One influence on these circulation patterns is the longitudinal density ...
    • Flow distortion investigation of wind velocity perturbations for two ocean meteorological platforms 

      Emond, Marc; Vandemark, Doug; Forsythe, James; Plueddemann, Albert J.; Farrar, J. Thomas (Woods Hole Oceanographic Institution, 2012-03)
      A computational fluid dynamics (CFD) study was performed of the wind flow around two ocean buoys used to collect meteorological data from sensors mounted on the buoy tower. The CFD approach allowed wind velocity perturbations ...
    • Flow disturbances generated by feeding and swimming zooplankton 

      Kiørboe, Thomas; Jiang, Houshuo; Goncalves, Rodrigo Javier; Nielsen, Lasse Tor; Wadhwa, Navish (2014-03)
      Interactions between planktonic organisms, such as detection of prey, predators, and mates, are often mediated by fluid signals. Consequently, many plankton predators perceive their prey from the fluid disturbances that ...
    • Flow of supersonic jets across flat plates : implications for ground-level flow from volcanic blasts 

      Orescanin, Mara M.; Prisco, David; Austin, Joanna M.; Kieffer, Susan W. (John Wiley & Sons, 2014-04-24)
      We report on laboratory experiments examining the interaction of a jet from an overpressurized reservoir with a canonical ground surface to simulate lateral blasts at volcanoes such as the 1980 blast at Mount St. Helens. ...
    • Flow over finite isolated topography 

      Thompson, LuAnne (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1990-11)
      One and two layer models are used to study flow over axisymmetric isolated topography. Inviscid or nearly inviscid flow in which non-linear effects have order one importance is considered, and both the effects of β and ...
    • Flow-induced channelization in a porous medium 

      Mahadevan, Amala; Orpe, A. V.; Kudrolli, A.; Mahadevan, L. (2012-05-17)
      Flow through a saturated, granular, porous medium can lead to internal erosion, preferential flow enhancement and the formation of channels within the bulk of the medium. We examine this phenomenon using a combination ...
    • Flow-weighted values of runoff tracers (δ18O, DOC, Ba, alkalinity) from the six largest Arctic rivers 

      Cooper, Lee W.; McClelland, James W.; Holmes, Robert M.; Raymond, Peter A.; Gibson, J. J.; Guay, Christopher K.; Peterson, Bruce J. (American Geophysical Union, 2008-09-20)
      We present new flow-weighted data for δ 18OH2O, dissolved organic carbon (DOC), dissolved barium and total alkalinity from the six largest Arctic rivers: the Ob', Yenisey, Lena, Kolyma, Yukon and Mackenzie. These data, ...
    • Fluctuation of 400-Hz sound intensity in the 2001 ASIAEX South China Sea experiment 

      Duda, Timothy F.; Lynch, James F.; Newhall, Arthur E.; Wu, Lixin; Chiu, Ching-Sang (IEEE, 2004-10)
      We present analyses of fluctuations seen in acoustic signals transmitted by two 400-Hz sources moored as part of the ASIAEX 2001 South China Sea (SCS) experiment. One source was near the bottom in 350-m deep water 31.3 km ...
    • Fluctuations in export productivity over the last century from sediments of a southern Chilean fjord (44°S) 

      Sepulveda, Julio; Pantoja, Silvio; Hughen, Konrad A.; Lange, Carina B.; Gonzalez, Fidelina; Munoz, Praxedes; Rebolledo, Lorena; Castro, Rodrigo; Contreras, Sergio; Avila, Alejandro; Rossel, Pamela; Lorca, Gisella; Salamanca, Marco; Silva, Nelson (2005-07-08)
      Here we present the first reconstruction of changes in surface primary production during the last century from the Puyuhuapi fjord in southern Chile, using a variety of parameters (diatoms, biogenic silica, total organic ...
    • The fluid dynamics of swimming by jumping in copepods 

      Jiang, Houshuo; Kiørboe, Thomas (2010-11-04)
      Copepods swim either continuously by vibrating their feeding appendages or erratically by repeatedly beating their swimming legs resulting in a series of small jumps. The two swimming modes generate different hydrodynamic ...
    • Fluid flow and sound generation at hydrothermal vent fields 

      Little, Sarah A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1988-04-08)
      Several experiments are presented in this thesis which examine methods to measure and monitor fluid flow from hydrothermal vent fields. Simultaneous velocity, temperature, and conductivity data were collected in the ...
    • Fluid inclusion evidence for subsurface phase separation and variable fluid mixing regimes beneath the deep-sea PACMANUS hydrothermal field, Manus Basin back arc rift, Papua New Guinea 

      Vanko, David A.; Bach, Wolfgang; Roberts, Stephen; Yeats, Christopher J.; Scott, Steven D. (American Geophysical Union, 2004-03-05)
      Altered volcanic rocks were cored from over 350 m below the seafloor at the Papua New Guinea-Australia-Canada Manus Basin Hydrothermal Field (PACMANUS) deep-sea hydrothermal field, in the eastern Manus back arc basin. Fluid ...
    • Fluid interactions that enable stealth predation by the upstream-foraging hydromedusa Craspedacusta sowerbyi 

      Lucas, K.; Colin, Sean P.; Costello, John H.; Katija, Kakani; Klos, E. (Marine Biological Laboratory, 2013-09-01)
      Unlike most medusae that forage with tentacles trailing behind their bells, several species forage upstream of their bells using aborally located tentacles. It has been hypothesized that these medusae forage as stealth ...
    • Fluid mechanical measurements within the bottom boundary layer during coastal mixing and optics 

      Fredericks, Janet J.; Trowbridge, John H.; Williams, Albert J.; Voulgaris, George; Shaw, William J. (Woods Hole Oceanographic Institution, 2001-08)
      To quantify and understand the role of vertical mixing processes in determining mid-shelf vertical structure of hydrographic and optical properties and particulate matter, the Office of Naval Research (ONR) funded a program ...
    • Fluid mechanical measurements within the boundary layer over the northern California Continental Shelf during STRESS 

      Fredericks, Janet J.; Trowbridge, John H.; Williams, Albert J.; Lentz, Steven J.; Butman, Bradford; Gross, Thomas F. (Woods Hole Oceanographic Institution, 1993-09)
      In studying the processes controlling particle distrbution of fine sediments over the continental shelf, the height, structure and dynamics of the bottom boundary layer must be better understood. The Sediment Transport ...
    • Fluid mechanics applied to the study of atmospheric circulations. I. A study of flow patterns with the aid of isentropic analysis. 

      Rossby, Carl-Gustaf; Namias, Jerome; Simmers, Ritchie G. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1938-12)
      This paper constitutes Part I of a report on certain investigations which have been in progress at the Massachusetts Institute of Technology during the past few years and which have been supported in part with funds ...
    • Flux and size fractionation of He-3 in interplanetary dust from Antarctic ice core samples 

      Brook, Edward J.; Kurz, Mark D.; Curtice, Joshua (2009-07-12)
      Accretion of extraterrestrial material to earth is of interest for a variety of reasons, including as a possible driver of long or short-term climate change, and as a record of solar system events preserved in the ...
    • 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 ...