Index Catalog // ScholarsArchive@OSU

Creator:: Chen, Shih-Nan, Geyer, W. Rockwell, Ralston, David K., and Lerczak, James A.
Abstract:: Isohaline coordinate analysis is used to compare the exchange flow in two contrasting estuaries, the long (with respect to tidal excursion) Hudson River and the short Merrimack River, using validated numerical models. The isohaline analysis averages fluxes in salinity space rather than in physical space, yielding the isohaline exchange flow...
Resource Type:: Article
Full Text:: Physics & Engineering, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts JAMES A. LERCZAK

Creator:: Zaron, Edward D. and Moum, James N.
Abstract:: A reexamination of turbulence dissipation measurements from the equatorial Pacific shows that the turbulence diffusivities are not a simple function of the gradient Richardson number. A widely used mixing scheme, the K-profile parameterization, overpredicts the turbulent vertical heat flux by roughly a factor of 4 in the stably stratified region...
Resource Type:: Article
Full Text:: , Portland State University, Portland, Oregon JAMES N. MOUM College of Oceanic and Atmospheric Science

Creator:: Lerczak, James A. and Geyer, W. Rockwell
Abstract:: The dynamics of lateral circulation in an idealized, straight estuary under varying stratification conditions is investigated using a three-dimensional, hydrostatic, primitive equation model in order to determine the importance of lateral circulation to the momentum budget within the estuary. For all model runs, lateral circulation is about 4 times as...
Resource Type:: Article
Full Text:: L O C E A N O G R A P H Y q 2004 American Meteorological Society Modeling the Lateral Circulation

Creator:: Klymak, Jody M. and Moum, James N.
Abstract:: Isopycnal slope spectra were computed from thermistor data obtained using a microstructure platform towed through turbulence generated by internal tidal motions near the Hawaiian Ridge. The spectra were compared with turbulence dissipation rates ε that are estimated using shear probes. The turbulence subrange of isopycnal slope spectra extends to surprisingly...
Resource Type:: Article
Full Text:: JAMES N. MOUM College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon

Creator:: Klymak, Jody M. and Moum, James N.
Abstract:: Horizontal tow measurements of internal waves are rare and have been largely supplanted in recent decades by vertical profile measurements. Here, estimates of isotherm displacements and turbulence dissipation rate from a towed vehicle deployed near Hawaii are presented. The displacement data are interpreted in terms of horizontal wavenumber spectra of...
Resource Type:: Article
Full Text:: JAMES N. MOUM College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon

Creator:: Nash, Jonathan D. and Moum, James N.
Abstract:: Direct determination of the irreversible turbulent flux of salinity in the ocean has not been possible because of the complexity of measuring salinity on the smallest scales over which it mixes. Presented is an analysis of turbulent salinity microstructure from measurements using a combined fast-conductivity/temperature probe on a slowly falling...
Resource Type:: Article
Full Text:: L O C E A N O G R A P H Y q 2002 American Meteorological Society Microstructure Estimates of

Creator:: Cenedese, Claudia, Lerczak, James A., and Bartone, Giuseppe
Abstract:: See article for Abstract.
Resource Type:: Article
Full Text:: Institution, Woods Hole, Massachusetts JAMES A. LERCZAK College of Earth, Ocean, and Atmospheric Sciences

Creator:: Warner, Sally J., MacCready, Parker, Moum, James N., and Nash, Jonathan D.
Abstract:: As currents flow over rough topography, the pressure difference between the up-and downstream sides results in form drag-a force that opposes the flow. Measuring form drag is valuable because it can be used to estimate the loss of energy from currents as they interact with topography. An array of bottom...
Resource Type:: Article
Full Text:: Washington, Seattle, Washington JAMES N. MOUM AND JONATHAN D. NASH College of Earth, Ocean, and Atmospheric

Creator:: Ralston, David K., Geyer, W. Rockwell, and Lerczak, James A.
Abstract:: A tidally and cross-sectionally averaged model based on the temporal evolution of the quasi-steady Hansen and Rattray equations is applied to simulate the salinity distribution and vertical exchange flow along the Hudson River estuary. The model achieves high skill at hindcasting salinity and residual velocity variation during a 110-day period...
Resource Type:: Article
Full Text:: : Observations and Modeling DAVID K. RALSTON, W. ROCKWELL GEYER, AND JAMES A. LERCZAK* Woods Hole Oceanographic

Creator:: Umlauf, Lars, Smyth, William D., and Moum, James N.
Abstract:: Turbulent bottom Ekman layers are among the most important energy conversion sites in the ocean. Their energetics are notoriously complex, in particular near sloping topography, where the feedback between cross-slope Ekman transports, buoyancy forcing, and mixing affects the energy budget in ways that are not well understood. Here, the authors...
Resource Type:: Article
Full Text:: WILLIAM D. SMYTH AND JAMES N. MOUM Oregon State University, Corvallis, Oregon (Manuscript received 24

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