Now showing items 183-197 of 197

  • U.S. IOOS coastal and ocean modeling testbed : inter-model evaluation of tides, waves, and hurricane surge in the Gulf of Mexico 

    Kerr, Patrick C.; Donahue, Aaron S.; Westerink, Joannes J.; Luettich, Richard A.; Zheng, L. Y.; Weisberg, Robert H.; Huang, Y.; Wang, H. V.; Teng, Y.; Forrest, D. R.; Roland, A.; Haase, A. T.; Kramer, A. W.; Taylor, A. A.; Rhome, J. R.; Feyen, J. C.; Signell, Richard P.; Hanson, J. L.; Hope, M. E.; Estes, R. M.; Dominguez, R. A.; Dunbar, R. P.; Semeraro, L. N.; Westerink, H. J.; Kennedy, A. B.; Smith, J. M.; Powell, M. D.; Cardone, V. J.; Cox, A. T. (John Wiley & Sons, 2013-10-08)
    A Gulf of Mexico performance evaluation and comparison of coastal circulation and wave models was executed through harmonic analyses of tidal simulations, hindcasts of Hurricane Ike (2008) and Rita (2005), and a benchmarking ...
  • Underwater microscope for measuring spatial and temporal changes in bed-sediment grain size 

    Rubin, David M.; Chezar, Henry; Harney, Jodi N.; Topping, David J.; Melis, Theodore S.; Sherwood, Christopher R. (Elsevier B.V., 2007-05-26)
    For more than a century, studies of sedimentology and sediment transport have measured bed-sediment grain size by collecting samples and transporting them back to the laboratory for grain-size analysis. This process is ...
  • The use (and misuse) of sediment traps in coral reef environments : theory, observations, and suggested protocols 

    Storlazzi, Curt D.; Field, Michael E.; Bothner, Michael H. (Springer, 2010-12-17)
    Sediment traps are commonly used as standard tools for monitoring “sedimentation” in coral reef environments. In much of the literature where sediment traps were used to measure the effects of “sedimentation” on corals, ...
  • Using a composite grid approach in a complex coastal domain to estimate estuarine residence time 

    Warner, John C.; Geyer, W. Rockwell; Arango, Hernan G. (Elsevier B.V., 2010-04-18)
    We investigate the processes that influence residence time in a partially mixed estuary using a three-dimensional circulation model. The complex geometry of the study region is not optimal for a structured grid model and ...
  • Variational analysis of drifter positions and model outputs for the reconstruction of surface currents in the central Adriatic during fall 2002 

    Taillandier, V.; Griffa, A.; Poulain, P. M.; Signell, Richard P.; Chiggiato, Jacopo; Carniel, Sandro (American Geophysical Union, 2008-04-04)
    In this paper we present an application of a variational method for the reconstruction of the velocity field in a coastal flow in the central Adriatic Sea, using in situ data from surface drifters and outputs from the ROMS ...
  • Vertical motions of the Puerto Rico Trench and Puerto Rico and their cause 

    ten Brink, Uri S. (American Geophysical Union, 2005-06-22)
    The Puerto Rico trench exhibits great water depth, an extremely low gravity anomaly, and a tilted carbonate platform between (reconstructed) elevations of +1300 m and −4000 m. I argue that these features are manifestations ...
  • The vertical structure of the circulation and dynamics in Hudson Shelf Valley 

    Lentz, Steven J.; Butman, Bradford; Harris, Courtney K. (John Wiley & Sons, 2014-06-11)
    Hudson Shelf Valley is a 20–30 m deep, 5–10 km wide v-shaped submarine valley that extends across the Middle Atlantic Bight continental shelf. The valley provides a conduit for cross-shelf exchange via along-valley currents ...
  • A Visual Basic program to generate sediment grain-size statistics and to extrapolate particle distributions 

    Poppe, Lawrence J.; Eliason, A. H.; Hastings, M. E. (Elsevier B.V., 2004-07-17)
    Measures that describe and summarize sediment grain-size distributions are important to geologists because of the large amount of information contained in textural data sets. Statistical methods are usually employed to ...
  • A Visual Basic program to plot sediment grain-size data on ternary diagrams 

    Poppe, Lawrence J.; Eliason, A. H. (Elsevier B.V., 2007-11-07)
    Sedimentologic datasets are typically large and compiled into tables or databases, but pure numerical information can be difficult to understand and interpret. Thus, scientists commonly use graphical representations to ...
  • Volume change associated with formation and dissociation of hydrate in sediment 

    Lee, J. Y.; Santamarina, J. Carlos; Ruppel, Carolyn D. (American Geophysical Union, 2010-03-11)
    Gas hydrate formation and dissociation in sediments are accompanied by changes in the bulk volume of the sediment and can lead to changes in sediment properties, loss of integrity for boreholes, and possibly regional ...
  • Water level response in back-barrier bays unchanged following Hurricane Sandy 

    Aretxabaleta, Alfredo L.; Butman, Bradford; Ganju, Neil K. (John Wiley & Sons, 2014-05-02)
    On 28–30 October 2012, Hurricane Sandy caused severe flooding along portions of the northeast coast of the United States and cut new inlets across barrier islands in New Jersey and New York. About 30% of the 20 highest ...
  • Wave- and tidally-driven flow and sediment flux across a fringing coral reef : southern Molokai, Hawaii 

    Storlazzi, Curt D.; Ogston, Andrea S.; Bothner, Michael H.; Field, Michael E.; Presto, M. K. (Elsevier B.V., 2004-07-08)
    The fringing coral reef off the south coast of Molokai, Hawaii is currently being studied as part of a US Geological Survey (USGS) multi-disciplinary project that focuses on geologic and oceanographic processes that affect ...
  • Wave-current interaction in Willapa Bay 

    Olabarrieta, Maitane; Warner, John C.; Kumar, Nirnimesh (American Geophysical Union, 2011-12-13)
    This paper describes the importance of wave-current interaction in an inlet-estuary system. The three-dimensional, fully coupled, Coupled Ocean-Atmosphere-Wave-Sediment Transport (COAWST) modeling system was applied in ...
  • A wetting and drying scheme for ROMS 

    Warner, John C.; Defne, Zafer; Haas, Kevin A.; Arango, Hernan G. (Elsevier B.V., 2013-05-24)
    The processes of wetting and drying have many important physical and biological impacts on shallow water systems. Inundation and dewatering effects on coastal mud flats and beaches occur on various time scales ranging from ...
  • Widespread gas hydrate instability on the upper U.S. Beaufort margin 

    Phrampus, Benjamin J.; Hornbach, Matthew J.; Ruppel, Carolyn D.; Hart, Patrick E. (John Wiley & Sons, 2014-12-09)
    The most climate-sensitive methane hydrate deposits occur on upper continental slopes at depths close to the minimum pressure and maximum temperature for gas hydrate stability. At these water depths, small perturbations ...