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The Unpredictable Nature of Internal Tides on Continental Shelves

Creator:: Nash, Jonathan D., Kelly, Samuel M., Shroyer, Emily L., Moum, James N., and Duda, Timothy F.
Abstract:: Packets of nonlinear internal waves (NLIWs) in a small area of the Mid-Atlantic Bight were 10 times more energetic during a local neap tide than during the preceding spring tide. This counterintuitive result cannot be explained if the waves are generated near the shelf break by the local barotropic tide...
Resource Type:: Article
Full Text:: cannot be explained if the waves are generated near the shelf break by the local barotropic tide since

Estimating Internal Wave Energy Fluxes in the Ocean

Creator:: Nash, Jonathan D., Alford, Matthew H., and Kunze, Eric
Abstract:: Energy flux is a fundamental quantity for understanding internal wave generation, propagation, and dissipation. In this paper, the estimation of internal wave energy fluxes <u′p′> from ocean observations that may be sparse in either time or depth are considered. Sampling must be sufficient in depth to allow for the estimation...
Resource Type:: Article
Full Text:: com- putations have been used to quantify internal tide gen- eration at ridges in observations

The spring transition in currents over the Oregon continental shelf

Creator:: Huyer, Adrianna, 1945-, Sobey, E. J. C., and Smith, Robert L. (Robert Lloyd), 1935-
Abstract:: Current meter moorings maintained over the Oregon continental shelf in 1973 and 1975 clearly show the difference between winter and spring oceanographic regimes and the rapid transition between the regimes. In winter the mean alongshore current is northward at all depths and strongest near shore; there is no mean vertical...
Resource Type:: Article
Full Text:: nearly barotropic in spring; the offshore length scale is about the same as the shelf width in winter

Structure of the coastal current field off Northern California during the coastal ocean dynamics experiment

Creator:: Kosro, P. Michael, 1951-
Abstract:: For 74 days during the spring and summer upwelling seasons of 1981 and 1982, in conjunction with the Coastal Ocean Dynamics Experiment, profiles of upper ocean currents were collected in the waters over the shelf and slope off northern California using a shipboard Doppler acoustic log. These measurements provide detailed...
Resource Type:: Article
Full Text:: inter- esting. The poleward flow is relatively barotropic, while the offshore zone shows strong

Diurnal/semidiurnal polar motion excited by oceanic tidal angular momentum

Creator:: Chao, B. F., Ray, R. D., Gipson, J. M., Egbert, Gary D., and Ma, C.
Abstract:: The axial component of the oceanic tidal angular momentum (OTAM) has been demonstrated to be responsible for most of the diurnal and semidiurnal variations in Earth's rotational rate. In this paper we study the equatorial components of OTAM and their corresponding effects on the orientation of Earth's rotational axis, or...
Resource Type:: Article
Full Text:: tidal forcing; (3) the neglect of smaller tides in the tide models presented here [cf. Seiler and

Semidiurnal internal tide in JASIN: Observations and simulation

Creator:: deWitt, L. M., Levine, Murray D., Paulson, C. A., and Burt, W. V.
Abstract:: Temperature was observed in the upper 80 m by moored thermistor chains at three locations in Rockall Channel west of Scotland. Isotherms were interpolated, and a 1‐week period of exceptionally energetic tidal oscillations was analyzed. The moored array (horizontal separations ranging from 6 to 20 km) was used as an...
Resource Type:: Article
Full Text:: barotropic tide with topography will produce a modulated, beamlike pattern. Topographic features were

Extracting the internal tide from data: Methods and observations from the Mixed Layer Dynamics Experiment

Creator:: Levine, Murray D. and Richman, James G.
Abstract:: Several methods are developed for analyzing data containing a highly variable internal tide. In particular, the methods are aimed at the analysis of moored observations with relatively few measurements in the vertical. The analysis depends upon an "elliptical decomposition" that is a generalization of the familiar "rotary decomposition." The technique...
Resource Type:: Article
Full Text:: tide and to predict these baroclinic oscillations with the same reliability as the barotropic tide

Internal waves under the Arctic pack ice during the Arctic Internal Wave Experiment: The coherence structure

Creator:: Levine, Murray D.
Abstract:: The spectral composition of internal gravity waves under the Arctic pack ice during the Arctic Internal Wave Experiment (AIWEX) was found to be strikingly different from observations at lower latitudes. Time series of vertical displacement were inferred from horizontal and vertical arrays of temperature and conductivity sensors. Frequency spectra indicate...
Resource Type:: Article
Full Text:: the weak barotropic tide in the Beaufort Sea [Kowalik and Untersteiner, 1978]. The vertical

Internal wave dissipation under sea ice

Creator:: Morison, James H., Long, Charles E., and Levine, Murray D.
Abstract:: The dissipation of internal wave energy in the turbulent boundary layer under pack ice is determined using a time‐varying boundary layer model with an eddy coefficient closure scheme. The magnitude of the eddy coefficient is determined by the ice drift velocity, which is assumed greater than the rms water velocity...
Resource Type:: Article
Full Text:: forcing. Also, tides are generally weak in the Arctic, and above 75øN the tidal frequencies lie

Atmospheric conditions during the spring and fall transitions in the coastal ocean off western United States

Creator:: Strub, P. Ted and James, Corinne
Abstract:: We examine large-scale atmospheric behavior around the time of the spring and fall transitions in the coastal ocean off the west coast of North America. Records of adjusted sea level (ASL), coastal wind stress, sea level atmospheric pressure (SLP), and 500-mbar heights for the years 1971-1975 and 1980-1983 are analyzed....
Resource Type:: Article
Full Text:: used by S1. Hourly tide gauge data were available from six locations from approximately 34øN to 48øN

ScholarsArchive@OSU

The Unpredictable Nature of Internal Tides on Continental Shelves

Estimating Internal Wave Energy Fluxes in the Ocean

The spring transition in currents over the Oregon continental shelf

Structure of the coastal current field off Northern California during the coastal ocean dynamics experiment

Diurnal/semidiurnal polar motion excited by oceanic tidal angular momentum

Semidiurnal internal tide in JASIN: Observations and simulation

Extracting the internal tide from data: Methods and observations from the Mixed Layer Dynamics Experiment

Internal waves under the Arctic pack ice during the Arctic Internal Wave Experiment: The coherence structure

Internal wave dissipation under sea ice

Atmospheric conditions during the spring and fall transitions in the coastal ocean off western United States

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