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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:: ERIC KUNZE, JAMES B. GIRTON, GLENN S. CARTER, CRAIG M. LEE, THOMAS B. SANFORD, AND MICHAEL C. GREGG

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:: Equations in a Fluid with One Horizontal Dimension and Variable Depth SAMUEL M. KELLY AND NICOLE L. JONES

Turbulence and high-frequency variability in a deep gravity current outflow

Creator:: Nash, Jonathan D., Peters, Hartmut, Kelly, Samuel M., Pelegri, Josep L., Emelianov, Mikhail, and Gasser, Marc
Abstract:: Intensive sampling of the deep Mediterranean outflow 70 km W of the Strait of Gibraltar reveals a strong, tidally modulated gravity current embedded with large-amplitude oscillations and energetic turbulence. The flow appears to be hydraulically controlled at a small topographic constriction, with turbulence and internal waves varying together and increasing...
Resource Type:: Article
Full Text:: current outflow Jonathan D. Nash,1 Hartmut Peters,2 Samuel M. Kelly,1,3 Josep L. Pelegrí,4 Mikhail

Are Any Coastal Internal Tides Predictable?

Creator:: Nash, Jonathan D., Shroyer, Emily L., Kelly, Samuel M., Inall, Mark E., Duda, Timothy F., Levine, Murray D., Jones, Nicole L., and Musgrave, Ruth C.
Abstract:: Surface tides are the heartbeat of the ocean. Because they are controlled by Earth's motion relative to other astronomical objects in our solar system, surface tides act like clockwork and generate highly deterministic ebb and flow familiar to all mariners. In contrast, baroclinic motions at tidal frequencies are much more...
Resource Type:: Article
Full Text:: | Vol. 25, No. 280 B y J o N at h a N D . N a s h , E m i ly l . s h r o y E r , s a m u E l m

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:: Australia, Australia EMILY L. SHROYER AND JAMES N. MOUM College of Earth, Ocean and Atmospheric Sciences

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:: Dissipation Rate Waterhouse, A. F., MacKinnon, J. A., Nash, J. D., Alford, M. H., Kunze, E., Simmons, H. L

The formation and fate of internal waves in the South China Sea

Creator:: Alford, Matthew H., Peacock, Thomas, MacKinnon, Jennifer A., Nash, Jonathan D., Buijsman, Maarten C., Centurioni, Luca R., Chao, Shenn-Yu, Chang, Ming-Huei, Farmer, David M., Fringer, Oliver B., Fu, Ke-Hsien, Gallacher, Patrick C., Graber, Hans C., Helfrich, Karl R., Jachec, Steven M., Jackson, Christopher R., Klymak, Jody M., Ko, Dong S., Jan, Sen, Johnston, T. M. Shaun, Legg, Sonya, Lee, I-Huan, Lien, Ren-Chieh, Mercier, Matthieu J., Moum, James N., Musgrave, Ruth, Park, Jae-Hun, Pickering, Andrew I., Pinkel, Robert, Rainville, Luc, Ramp, Steven R., Rudnick, Daniel L., Sarkar, Sutanu, Scotti, Alberto, Simmons, Harper L., St. Laurent, Louis C., Venayagamoorthy, Subhas K., Wang, Yu-Huai, Wang, Joe, Yang, Yiing J., Paluszkiewicz, Theresa, and Tang, Tswen-Yung (David)
Abstract:: Internal gravity waves, the subsurface analogue of the familiar surface gravity waves that break on beaches, are ubiquitous in the ocean. Because of their strong vertical and horizontal currents, and the turbulent mixing caused by their breaking, they affect a panoply of ocean processes, such as the supply of nutrients...
Resource Type:: Article
Full Text:: ., MacKinnon, J. A., Nash, J. D., Buijsman, M. C., Centuroni, L. R., ... & Tang, T. Y. D. (2015). The

A Thermocouple Probe for High-Speed Temperature Measurement in the Ocean

Creator:: Nash, Jonathan D., Caldwell, Douglas R., Zelman, Michael J., and Moum, James N.
Abstract:: A fast-response chromel–constantan thermocouple sensor was constructed for use on the microstructure profiler Chameleon and used for 60 ocean profiles off the coast of Oregon. The stability of the thermocouple was compared to that of an FP07 microbead thermistor, and its frequency response was compared to a high-resolution microconductivity probe....
Resource Type:: Article
Full Text:: atot_16_1119.1474_1482 1474 VOLUME 16J O U R N A L O F A T M O S P

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:: –Henyey scaling; Gregg 1989) MAY 2004 1121N A S H E T A L . FIG. 4. Temperature structure in and above

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:: ., Seattle, WA 98105-6698. E-mail: craig@apl.washington.edu JUNE 2006 L E E E T A L . 1165 © 2006 American

ScholarsArchive@OSU

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

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

Turbulence and high-frequency variability in a deep gravity current outflow

Are Any Coastal Internal Tides Predictable?

The Unpredictable Nature of Internal Tides on Continental Shelves

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

The formation and fate of internal waves in the South China Sea

A Thermocouple Probe for High-Speed Temperature Measurement in the Ocean

Internal Tide Reflection and Turbulent Mixing on the Continental Slope

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

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