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Finescale Shear at 1660 and 2850 dbar over the Mid-Atlantic Ridge in the Eastern Brazil Basin
Publisher: American Meteorological Society
Abstract: Two drifting Shearmeter instruments have provided records of the magnitude of shear (the magnitude of the vertical derivative of horizontal velocity), measured over a 10-m aperture, in the vicinity of the Brazil Basin ...
Intrinsic Nonlinearity and Spectral Structure of Internal Tides at an Idealized Mid-Atlantic Bight Shelf Break
Publisher: American Meteorological Society
Abstract: o quantify dynamical aspects of internal-tide generation at the Mid-Atlantic Bight shelf break, this study employs an idealized ocean model initialized by climatological summertime stratification and forced by monochromatic ...
Diapycnal Diffusivity Inferred from Scalar Microstructure Measurements near the New England Shelf/Slope Front
Publisher: American Meteorological Society
Abstract: Conductivity microstructure was used to estimate the diapycnal thermal eddy diffusivity KT near the New England shelf/slope front in early August 1997. Two datasets were collected with a towed vehicle. One involved several ...
Modeling and Analysis of Internal-Tide Generation and Beamlike Onshore Propagation in the Vicinity of Shelfbreak Canyons
Publisher: American Meteorological Society
Abstract: hydrostatic numerical model with alongshore-uniform barotropic M2 tidal boundary forcing and idealized shelfbreak canyon bathymetries is used to study internal-tide generation and onshore propagation. A control simulation ...
Acoustical Measurement of Nonlinear Internal Waves Using the Inverted Echo Sounder
Publisher: American Meteorological Society
Abstract: The performance of pressure sensor?equipped inverted echo sounders for monitoring nonlinear internal waves is examined. The inverted echo sounder measures the round-trip acoustic travel time from the sea floor to the sea ...
Interpreting Conductivity Microstructure: Estimating the Temperature Variance Dissipation Rate
Publisher: American Meteorological Society
Abstract: A simple model of the conductivity gradient spectrum is developed and used to interpret oceanic conductivity microstructure observations. A principal goal is to estimate the correction factor E for inferring the temperature ...
The Unpredictable Nature of Internal Tides on Continental Shelves
Publisher: American Meteorological Society
Abstract: ackets 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 ...
A Coupled-Mode Shallow-Water Model for Tidal Analysis: Internal Tide Reflection and Refraction by the Gulf Stream
Publisher: American Meteorological Society
Abstract: hydrostatic, coupled-mode, shallow-water model (CSW) is described and used to diagnose and simulate tidal dynamics in the greater Mid-Atlantic Bight region. The reduced-physics model incorporates realistic stratification ...
Internal Tidal Modal Ray Refraction and Energy Ducting in Baroclinic Gulf Stream Currents
Publisher: American Meteorological Society
Abstract: AbstractUpstream mean semidiurnal internal tidal energy flux has been found in the Gulf Stream in hydrodynamical model simulations of the Atlantic Ocean. A major source of the energy in the simulations is the south edge ...