Index Catalog // ScholarsArchive@OSU

Creator:: Chereskin, T. K., Moum, James N., Stabeno, P. J., Caldwell, Douglas R., Paulson, C. A., Regier, L. A., and Halpern, D.
Abstract:: In November-December 1984 we carried out an intensive 12-day upper ocean sampling program on the equator at 140°W as part of the Tropic Heat Experiment. From our observations we constructed hourly averaged profiles of temperature, salinity, σ₁, turbulent kinetic energy dissipation rate, and horizontal velocity. These data were used to...
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Full Text:: the displacement of the background shear flow. In fact, if no u' were present, a horizontal velocity

Creator:: Dewey, Richard K., Moum, James N., and Caldwell, Douglas R.
Abstract:: This paper presents observations of a dynamic minifilament and summarizes the findings of three microstructure surveys across and within the meandering current structures of the Coastal Transition Zone (CTZ). An actively turbulent minifilament is discussed and possible consequences of the small-scale processes with regard to frontal dynamics are examined. Four...
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Full Text:: currents. The large filament observed in 1988 (DMPCP) resembled a single-sided front, with little or no

Creator:: Tang, Dajun, Moum, James N., Lynch, James F., Abbot, Phil, Chapman, Ross, Dahl, Peter H., Duda, Timothy F., Gawarkiewicz, Glen, Glenn, Scott, Goff, John A., Graber, Hans, Kemp, John, Maffei, Andrew, Nash, Jonathan D., and Newhall, Arthur
Abstract:: Since the end of the Cold War, the US Navy has had an increasing interest in continental shelves and slopes as operational areas. To work in such areas requires a good understanding of ocean acoustics, coastal physical oceanography, and, in the modern era, autonomous underwater vehicle (AUV) operations. Each area...
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Full Text:: Oceanography Vol. 20, No. 4156 B r e a k i N g W a V e s

Creator:: Smyth, William D., Hebert, D., and Moum, James N.
Abstract:: A westerly wind burst observed in the warm pool of the western equatorial Pacific Ocean cooled the ocean's surface layer by about 0.8°C. Turbulent entrainment at the base of this layer caused cooling but also heating due to the reversal of the vertical temperature gradient during rain events. Consequently, the...
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Full Text:: flux and the flux into the thermocline. Our purpose here is to report on observations made at a

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...
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Full Text:: jpo4133 2652..2664 A New Look at Richardson Number Mixing

Creator:: Dewey, Richard K., Moum, James N., Paulson, Clayton A., Caldwell, Douglas R., and Pierce, Stephen D.
Abstract:: Repeated microstructure transects across filaments in the coastal transition zone (CTZ) have Revealed fundamental structure and dynamics of the complicated features. The measurements allow detailed momentum and vorticity analyses and provide a possible explanations for structural asymmetry of the fronts. Observations made between July 2 and July 23, 1988, along...
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Full Text:: GEOPHYSICAL RESEARCH, VOL. 96, NO. C8, PAGES 14,885-14,907, AUGUST 15, 1991 Structure and Dynamics of a

Creator:: Imawaki, Shiro, Niiler, Pearn P., Gautier, Catherine H., Halpern, David, Knox, Robert A., Large, William G., Luther, Douglas S., McWilliams, James C., Moum, James N., and Paulson, Clayton A.
Abstract:: A new method is presented for estimating the vertical turbulent heat flux at the bottom of the daily mixed layer from the temperature data in the mixed layer and net solar irradiance data at the sea surface. We assume that fluctuations in the divergence of advective heat flux have longer...
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Full Text:: A New Method for Estimating the Turbulent Heat Flux at the

Creator:: Klymak, Jody M. and Moum, James N.
Abstract:: A sequence of three internal solitary waves of elevation were observed propagating shoreward along a near-bottom density interface over Oregon’s continental shelf. These waves are highly turbulent and coincide with enhanced optical backscatter, consistent with increased suspended sediments in the bottom boundary layer. Nonlinear solitary wave solutions are employed to...
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Full Text:: gl017706 1..4 Internal solitary waves of elevation advancing on a

Creator:: Cowles, Timothy J., Moum, James N., Desiderio, Russell A., and Angel, Stanley M.
Abstract:: The first seagoing test of a prototype laser/fiber-optic system for in situ detection of ocean chlorophyll fluorescence is described. Radiation at 488 nm originating from a shipboard argon laser was transmitted through 20 of 200-µm core optical fiber to the distal tip mounted on the microstructure profiler, the Rapid Sampling...
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Full Text:: February 1989 / Vol. 28, No. 3/ APPLIED OPTICS 599 orv 12. H. J. Price and G. A. Paffenhofer, "Effects

Creator:: Hales, Burke, Moum, James N., Covert, P., and Perlin, A.
Abstract:: Detailed and repeated measurements of nitrate across the Oregon shelf, made coincident with turbulence measurements, reveal the importance of cross-isopycnal mixing via turbulence in providing nitrate to the upper water column. Spatial distributions of vertical gradients and turbulent fluxes in the Oregon coastal ocean reveal variability that could not have...
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Full Text:: measurements show a smooth log-normal transition to higher gradients. There is no reason to expect that this is

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