Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Karl R. Helfrich"'
Publikováno v:
Journal of Physical Oceanography. 53:875-890
Deep ocean passages are advantageous sites for long-term monitoring of deep transport and other physical properties relevant to climate. Rotating hydraulic theory provides potential for simplifying monitoring strategy by reducing the number of quanti
Autor:
Karl R. Helfrich, Lev Ostrovsky
Publikováno v:
Nonlinear Processes in Geophysics. 29:207-218
Nonlinear oceanic internal solitary waves are considered under the influence of the combined effects of saturating nonlinearity, Earth's rotation, and horizontal depth inhomogeneity. Here the basic model is the extended Korteweg–de Vries equation t
Autor:
Jennifer A. MacKinnon, Hans C. Graber, Terri Paluszkiewicz, Gunner Voet, Luca Centurioni, Brian Powell, Karl R. Helfrich, Magdalena Andres, Martha Schönau, Louis St. Laurent, Pierre F. J. Lermusiaux, Eric Terrill, Kristin L. Zeiden, Matthew H. Alford, Shaun Johnston, Patrick Colin, Verena Hormann, Bo Qiu, Ruth Musgrave, Daniel L. Rudnick, Harper L. Simmons, Brian K. Arbic, Hemantha W. Wijesekera, David Trossman
Publikováno v:
Oceanography. 32:10-21
Autor:
Timothy F. Duda, Arthur E. Newhall, Ying-Tsong Lin, James Lynch, Glen Gawarkiewicz, Weifeng G. Zhang, Karl R. Helfrich, Pierre F. Lermusiaux, Keith von der Heydt, John Kemp
Publikováno v:
The Journal of the Acoustical Society of America. 152:A44-A44
New findings in outer-shelf and shelfbreak acoustics have been enabled by experimental and computational advances over the last 25 years. The details of sound field variability caused by highly dynamic conditions often found in this regime have becom
Autor:
Michelle H. DiBenedetto, Karl R. Helfrich, Anthony Pires, Erik J. Anderson, Lauren S. Mullineaux
Publikováno v:
The Journal of experimental biology. 225(3)
Swimming organisms may actively adjust their behavior in response to the flow around them. Ocean flows are typically turbulent and are therefore characterized by chaotic velocity fluctuations. While some studies have observed planktonic larvae alteri
Publikováno v:
Limnology and Oceanography. 65:707-716
Autor:
Lev A. Ostrovsky, Karl R. Helfrich
Publikováno v:
Journal of Physical Oceanography. 49:1639-1649
Using a recently developed asymptotic theory of internal solitary wave propagation over a sloping bottom in a rotating ocean, some new qualitative and quantitative features of this process are analyzed for internal waves in a two-layer ocean. The int
Autor:
Karl R. Helfrich, Kelly A. Ogden
Publikováno v:
Physical Review Fluids. 5
Publikováno v:
Journal of Fluid Mechanics. 893
The problem of the transmission of wave energy through small gaps arises in a variety of physical contexts. Here we consider the problem of Rossby waves encountering a barrier with two small gaps. In contrast to waves encountering a barrier with one
Autor:
Karl R. Helfrich, Roger Grimshaw
Publikováno v:
Journal of Fluid Mechanics. 839:387-407
Oceanic internal solitary waves are typically generated by barotropic tidal flow over localised topography. Wave generation can be characterised by the Froude number $F=U/c_{0}$, where $U$ is the tidal flow amplitude and $c_{0}$ is the intrinsic line