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Internal Tides and Turbulence along the 3000-m Isobath of the Hawaiian Ridge

Creator:: Lee, Craig M., Sanford, Thomas B., Kunze, Eric, Nash, Jonathan D., Merrifield, Mark A., and Holloway, Peter E.
Abstract:: Full-depth velocity and density profiles taken along the 3000-m isobath characterize the semidiurnal internal tide and bottom-intensified turbulence along the Hawaiian Ridge. Observations reveal baroclinic energy fluxes of 21 ± 5 kW m⁻¹ radiating from French Frigate Shoals, 17 ± 2.5 kW m⁻¹ from Kauai Channel west of Oahu, and...
Resource Type:: Article
Full Text:: Hawaiian Ridge CRAIG M. LEE,* ERIC KUNZE,� THOMAS B. SANFORD,* JONATHAN D. NASH,# MARK A. MERRIFIELD

Structure of the Baroclinic Tide Generated at Kaena Ridge, Hawaii

Creator:: Nash, Jonathan D., Kunze, Eric, Lee, Craig M., and Sanford, Thomas B.
Abstract:: Repeat transects of full-depth density and velocity are used to quantify generation and radiation of the semidiurnal internal tide from Kaena Ridge, Hawaii. A 20-km-long transect was sampled every 3 h using expendable current profilers and the absolute velocity profiler. Phase and amplitude of the baroclinic velocity, pressure, and vertical...
Resource Type:: Article
Full Text:: [�t � (u)(z)] by minimizing the residual R(z) in a least squares sense to determine A(z) and B(z

An Estimate of Tidal Energy Lost to Turbulence at the Hawaiian Ridge

Creator:: Klymak, Jody M., Moum, James N., Nash, Jonathan D., Kunze, Eric, Girton, James B., Carter, Glenn S., Lee, Craig M., Sanford, Thomas B., and Gregg, Michael C.
Abstract:: An integrated analysis of turbulence observations from four unique instrument platforms obtained over the Hawaiian Ridge leads to an assessment of the vertical, cross-ridge, and along-ridge structure of turbulence dissipation rate and diffusivity. The diffusivity near the seafloor was, on average, 15 times that in the midwater column. At 1000-m...
Resource Type:: Article
Full Text:: Channel. Bootstraps are on 960-s averages (dots) binned in 5-km-wide data bins. Dashed line in (b) is a

Global Patterns of Diapycnal Mixing from Measurements of the Turbulent Dissipation Rate

Creator:: Waterhouse, Amy F., MacKinnon, Jennifer A., Nash, Jonathan D., Alford, Matthew H., Kunze, Eric, Simmons, Harper L., Polzin, Kurt L., St. Laurent, Louis C., Sun, Oliver M., Pinkel, Robert, Talley, Lynne D., Whalen, Caitlin B., Huussen, Tycho N., Carter, Glenn S., Fer, Ilker, Waterman, Stephanie, Naveira Garabato, Alberto C., Sanford, Thomas B., and Lee, Craig M.
Abstract:: The authors present inferences of diapycnal diffusivity from a compilation of over 5200 microstructure profiles. As microstructure observations are sparse, these are supplemented with indirect measurements of mixing obtained from (i) Thorpe-scale overturns from moored profilers, a finescale parameterization applied to (ii) shipboard observations of upper-ocean shear, (iii) strain as...
Resource Type:: Article
Full Text:: decomposition of JULY 2014 WATERHOUSE ET AL . 1857 T A B L E 1 .C o m p il e d m ic ro st ru ct u re d a

A Coupled Model for Laplace’s Tidal Equations in a Fluid with One Horizontal Dimension and Variable Depth

Creator:: Kelly, Samuel M., Jones, Nichole L., and Nash, Jonathan D.
Abstract:: Abstract: Tide-topography interactions dominate the transfer of tidal energy from large to small scales. At present, it is poorly understood how low-mode internal tides reflect and scatter along the continental margins. Here, the coupling equations for linear tides model (CELT) are derived to determine the independent modal solutions to Laplace's...
Resource Type:: Article
Full Text:: mode m U( jL)a( j)1U*( jL)b( j)5U( jR)a( j11)1U*( jR)b( j11) and (9a) P( jL)a( j)2P*( jL)b( j)5P( jR

The Cascade of Tidal Energy from Low to High Modes on a Continental Slope

Creator:: Kelly, Samuel M., Nash, Jonathan D., Martini, Kim I., Alford, Matthew H., and Kunze, Eric
Abstract:: The linear transfer of tidal energy from large to small scales is quantified for small tidal excursion over a near-critical continental slope. A theoretical framework for low-wavenumber energy transfer is derived from “flat bottom” vertical modes and evaluated with observations from the Oregon continental slope. To better understand the observations,...
Resource Type:: Article
Full Text:: flux (vectors) from the (a) BT, (b) BC, (c) BT1BC, and (d) regional simulations. The rectangles

Three-Dimensional Double-Ridge Internal Tide Resonance in Luzon Strait

Creator:: Buijsman, Maarten C., Klymak, Jody M., Legg, Sonya, Alford, Matthew H., Farmer, David, MacKinnon, Jennifer A., Nash, Jonathan D., Park, Jae-Hun, Pickering, Andy, and Simmons, Harper
Abstract:: The three-dimensional (3D) double-ridge internal tide interference in the Luzon Strait in the South China Sea is examined by comparing 3D and two-dimensional (2D) realistic simulations. Both the 3D simulations and observations indicate the presence of 3D first-mode (semi)diurnal standing waves in the 3.6-km-deep trench in the strait. As in...
Resource Type:: Article
Full Text:: kinetic energy for the low-resolution 2D cases at (a) 20.978, (b) 20.598, and (c) 20.148N. (d)–(f) As in

Energy Flux and Dissipation in Luzon Strait: Two Tales of Two Ridges

Creator:: Alford, Matthew H., MacKinnon, Jennifer A., Nash, Jonathan D., Simmons, Harper, Pickering, Andy, Klymak, Jody M., Pinkel, Robert, Sun, Oliver, Rainville, Luc, Musgrave, Ruth, Beitzel, Tamara, Fu, Ke-Hsien, and Lu, Chung-Wei
Abstract:: Internal tide generation, propagation, and dissipation are investigated in Luzon Strait, a system of two quasi-parallel ridges situated between Taiwan and the Philippines. Two profiling moorings deployed for about 20 days and a set of nineteen 36-h lowered ADCP-CTD time series stations allowed separate measurement of diurnal and semidiurnal internal...
Resource Type:: Article
Full Text:: F O R D E T A L . 2215 T A B L E 1 . S ta ti o n in fo rm a ti o n , d e p th -i n

Energy Flux and Dissipation in Luzon Strait: Two Tales of Two Ridges

Creator:: Alford, Matthew H., MacKinnon, Jennifer A., Nash, Jonathan D., Simmons, Harper, Pickering, Andy, Klymak, Jody M., Pinkel, Robert, Sun, Oliver, Rainville, Luc, Musgrave, Ruth, Beitzel, Tamara, Fu, Ke-Hsien, and Lu, Chung-Wei
Abstract:: Internal tide generation, propagation, and dissipation are investigated in Luzon Strait, a system of two quasi-parallel ridges situated between Taiwan and the Philippines. Two profiling moorings deployed for about 20 days and a set of nineteen 36-h lowered ADCP–CTD time series stations allowed separate measurement of diurnal and semidiurnal internal...
Resource Type:: Article
Full Text:: F O R D E T A L . 2215 T A B L E 1 . S ta ti o n in fo rm a ti o n , d e p th -i n

Internal Tide Reflection and Turbulent Mixing on the Continental Slope

Creator:: Nash, Jonathan D., Kunze, Eric, Toole, John M., and Schmitt, Ray W.
Abstract:: Observations of turbulence, internal waves, and subinertial flow were made over a steep, corrugated continental slope off Virginia during May–June 1998. At semidiurnal frequencies, a convergence of low-mode, onshore energy flux is approximately balanced by a divergence of high-wavenumber offshore energy flux. This conversion occurs in a region where the...
Resource Type:: Article
Full Text:: overlay in the upper left. The location of the moored profilers (A, B, and C; blue), expendable current

ScholarsArchive@OSU

Internal Tides and Turbulence along the 3000-m Isobath of the Hawaiian Ridge

Structure of the Baroclinic Tide Generated at Kaena Ridge, Hawaii

An Estimate of Tidal Energy Lost to Turbulence at the Hawaiian Ridge

Global Patterns of Diapycnal Mixing from Measurements of the Turbulent Dissipation Rate

A Coupled Model for Laplace’s Tidal Equations in a Fluid with One Horizontal Dimension and Variable Depth

The Cascade of Tidal Energy from Low to High Modes on a Continental Slope

Three-Dimensional Double-Ridge Internal Tide Resonance in Luzon Strait

Energy Flux and Dissipation in Luzon Strait: Two Tales of Two Ridges

Energy Flux and Dissipation in Luzon Strait: Two Tales of Two Ridges

Internal Tide Reflection and Turbulent Mixing on the Continental Slope

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