Index Catalog // ScholarsArchive@OSU

Creator:: Chereskin, T. K., Levine, Murray D., Harding, A. J., and Regier, L. A.
Abstract:: Measurements of upper ocean shear made during the Mixed Layer Dynamics Experiment (MILDEX) provide evidence of large horizontal scale motion at near‐inertial frequency. The measurements consist of shipboard acoustic Doppler current profiles. Four large‐scale spatial surveys of 2–4 days duration were made by the R/V Wecoma as a set of...
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Full Text:: averaged vertical profiles of relative velocity. A where t•,,• are the east and north component shears, 1

Creator:: Cullen, John J., Lewis, Marlon R., Davis, Curtiss O., and Barber, Richard T.
Abstract:: Macronutrients persist in the surface layer of the equatorial Pacific Ocean because the production of phytoplankton is limited; the nature of this limitation has yet to be resolved. Measurements of photosynthesis as a function of irradiance (P-I) provide information on the control of primary productivity, a question of great biogeochemical...
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Full Text:: -day average, 1-100 m, 1-m intervals). Irradiance as a function of depth an.d time (I(z,t)) is the

Creator:: Chen, Qin, Dalrymple, Robert A., Kirby, James T., Kennedy, Andrew B., and Haller, Merrick C.
Abstract:: In this study, we use a time domain numerical model based on the fully nonlinear extended Boussinesq equations [Wei et al., 1995] to investigate surface wave transformation and breaking-induced nearshore circulation. The energy dissipation due to wave breaking is modeled by introducing an eddy viscosity term into the momentum equations,...
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Full Text:: current system Qin Chen, Robert A. Dalrymple, James T. Kirby, Andrew B. Kennedy, and Merrick C. Haller

Creator:: Cheng, T. K., Hill, D. F., Beamer, J., and García-Medina, G.
Abstract:: Total water levels (TWLs) within estuaries are influenced by tides, wind, offshore waves, and streamflow, all of which are uniquely affected by climate change. The magnitude of TWL associated with various return periods is relevant to understanding how the hydrodynamics of a bay or estuary may evolve under distinct climate...
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Full Text:: by NSE512 XT t51 Qto2Q t m � �2 XT t51 Qto2Qo � �2 ; (1) where Qo is an observed value, Qm is a

Creator:: McKibben, S. M., Strutton, P. G., Foley, D. G., Peterson, T. D., and White, A. E.
Abstract:: We have applied a normalized difference algorithm to 8 day composite chlorophyll-a (CHL) and fluorescence line height (FLH) imagery obtained from the Moderate Resolution Imaging Spectroradiometer aboard the Aqua spacecraft in order to detect and monitor phytoplankton blooms in the Oregon coastal region. The resulting bloom products, termed CHL[subscript rel]...
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Full Text:: Oregon coast S. M. McKibben,1 P. G. Strutton,2 D. G. Foley,3 T. D. Peterson,4 and A. E. White1 Received

Creator:: Boss, Emmanuel, Pegau, W. Scott, Gardner, Wilford D., Zaneveld, J. Ronald, Barnard, Andrew H., Twardowski, Michael S., Chang, G. C., and Dickey, T. D.
Abstract:: Spectral attenuation and absorption coefficients of particulate matter and collocated hydrographic measurements were obtained in the Mid-Atlantic Bight during the fall of 1996 and the spring of 1997 as part of the Coastal Mixing and Optics experiment. Within the bottom boundary layer (BBL) the magnitude of the beam attenuation decreased...
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Full Text:: oceanic particles is well approximated by a wavelength dependence of the form ;t -'/(2) and whether

Creator:: Smyth, W. D., Durland, T. S., and Moum, J. N.
Abstract:: Shipboard current measurements in the equatorial Indian Ocean in October and November of 2011 revealed oscillations in the meridional velocity with amplitude ~0.10 m/s. These were clearest in a layer extending from ~300 to 600 m depth and had periods near 3 weeks. Phase propagation was upward. Measurements from two...
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Full Text:: ) 10 15 20 25 30 35 0 0.05 0.1 T [day] (b)Earth frame mean flow frame Figure 7. (a) Probability

Creator:: Sallenger, A. H., Jr. and Holman, Robert A.
Abstract:: Wave setup and swash statistics were calculated from 154 runup time series steep beach under incident waves varying from 0.4 to 4.0 m significant wave height. incident wave height, setup, swash height, and total runup (the sum of setup and were found to vary linearly with the surf zone similarity...
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Full Text:: ; Guza and Bowen, 1976; Van Dom, 1978] have found at to be limited by a surf similarity parameter t

Creator:: Bowen, A. J. and Holman, Robert A.
Abstract:: A new class of nearshore waves based on the shear instability of a steady longshore current is discussed. The dynamics depend on the conservation of potential vorticity but with the background vorticity field, traditionally the role of Coriolis in larger scale flows, supplied by the shear structure of the longshore...
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Full Text:: Instabilities of the Mean Longshore Current 1. Theory A. J. BOWEN Department of Oceanography, Dalhousie

Creator:: Sallenger, Asbury H., Jr. and Holman, Robert A.
Abstract:: Measurements of cross-shore flow were made across the surf zone during a storm as a nearshore bar became better developed and migrated offshore. Measured infragravity band spectra were compared to synthetic spectra calculated numerically over the natural barred profile assuming a white run-up spectrum of leaky mode or high-mode edge...
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Full Text:: beach an edge wave has a veloci- ty potential given by (I)(x, y t)= (ang/a) qbn(X)f(y , t) (1

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