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Internal Tides and Energy Fluxes Over Great Meteor Seamount : Volume 4, Issue 2 (03/04/2007)

By Gerkema, T.

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Book Id: WPLBN0004020997
Format Type: PDF Article :
File Size: Pages 28
Reproduction Date: 2015

Title: Internal Tides and Energy Fluxes Over Great Meteor Seamount : Volume 4, Issue 2 (03/04/2007)  
Author: Gerkema, T.
Volume: Vol. 4, Issue 2
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2007
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Gerkema, T., & Haren, H. V. (2007). Internal Tides and Energy Fluxes Over Great Meteor Seamount : Volume 4, Issue 2 (03/04/2007). Retrieved from http://www.ebooklibrary.org/


Description
Description: Royal NIOZ, P.O. Box 59, 1790 AB Den Burg, Texel, The Netherlands. Internal-tide energy fluxes are determined halfway over the southern slope of Great Meteor Seamount (Canary Basin), using data from combined CTD/LADCP yoyoing, covering the whole water column. The strongest signal is semi-diurnal and is concentrated in the upper few hundred meters of the water column. An indeterminacy in energy flux profiles is discussed; it is argued that a commonly applied condition used to uniquely determine these profiles does in fact not apply over sloping bottoms. However, the vertically integrated flux can be established unambiguously. The observed results are compared to the outcome of a numerical internal-tide generation model. For the semi-diurnal internal tide, the vertically integrated flux found in the model corresponds well to the observed one. For the diurnal tide, however, the former is much smaller; this points to non-tidal origins of the diurnal signal, which is indeed to be expected at this latitude (30°), where near-inertial and diurnal periods coincide.

Summary
Internal tides and energy fluxes over Great Meteor Seamount

Excerpt
Gerkema, T., Staquet, C., and Bouruet-Aubertot, P.: Decay of semi-diurnal internal-tude beams due to subharmonic resonance, Geophys. Res. Lett., 33, L08604, doi:10.1029/2005GL025105, 2006.; Hibiya, T., Nagasawa, M., and Niwa, Y.: Nonlinear energy transfer within the oceanic internal wave spectrum at mid and high latitudes, J. Geophys. Res., 107(C11), 3207, doi:10.1029/2001JC001210, 2002.; Klymak, J. M., Moum, J N., Nash, J D., Kunze, E., Girton, J B., Carter, G S., Lee, C M., Sanford, T B., and Gregg, M C.: An estimate of tidal energy lost to turbulence at the Hawaiian Ridge, J. Phys. Oceanogr., 36, 1148–1164, 2006.; Dietrich, G.: Ozeanographie – physische Geographie des Weltmeeres, Georg Westermann Verlag, Braunschweig, 1970.; Egbert, G D. and Ray, R D.: Semi-diurnal and diurnal tidal dissipation from TOPEX/Poseidon altimetry, Geophys. Res. Lett., 30, 1907, doi:10.1029/2003GL017676, 2003.; Feistel, R. and Hagen, E.: On the GIBBS thermodynamic potential of seawater, Progr. Oceanogr., 36, 249–327, 1995.; Garcia Lafuente, J., Sarhan, T., Vargas, M., Vargas J M., and Plaza, F.: Tidal motions and tidally-induced fluxes through La Linea submarine canyon, western Alboran Sea, J. Geophys. Res., 94, 18 185–18 194, 1999.; Gerkema, T., Lam, F P A., and Maas, L R M.: Internal tides in the Bay of Biscay: conversion rates and seasonal effects, Deep-Sea Res. II, 51, 2995–3008, 2004.; Gerkema, T. and Shrira, V I.: Near-inertial waves on the non-traditional β plane, J. Geophys. Res., 110, C01003, doi:10.1029/2004JC002519, 2005.; Kunze, E., Rosenfeld, L K., Carter, G S., and Gregg, M C.: Internal waves in Monterey Submarine Canyon, J. Phys. Oceanogr., 32, 1890–1913, 2002.; Lam, F P A., Maas, L R M., and Gerkema, T.: Spatial structure of tidal and residual currents as observed over the shelf break in the Bay of Biscay, Deep-Sea Res. I, 51, 1075–1096, 2004.; MacKinnon, J A. and Winters, K B.: Subtropical catastrophe: Significant loss of low-mode tidal energy at 28.9° N, Geophys. Res. Lett., 32, L15605, doi:10.1029/2005GL023376, 2005.; Mohn, C. and Beckmann, A.: The upper ocean circulation at Great Meteor Seamount. Part I: Structure of density and flow fields, Ocean Dynamics, 52, 179–193, doi:10.1007/s10236-002-0017-4, 2002.; Nash, J D., Alford, M H., and Kunze, E.: Estimating internal wave energy fluxes in the ocean, J. Atmos. Oceanic Technol., 22, 1551–1570, 2005.; Nash, J D., Kunze, E., Lee, C M., and Sanford, T B.: Structure of the baroclinic tide generated at Kaena Ridge, Hawaii, J. Phys. Oceanogr., 36, 1123–1135, 2006.; Rainville, L. and Pinkel, R.: Baroclinic energy flux at the Hawaiian Ridge: observations from the R/P \em FLIP, J. Phys. Oceanogr., 36, 1104–1122, 2006.; Smith, W H F. and Sandwell, D T.: Global sea floor topography from satellite altimetry and ship depth soundings, Science, 277, 1956–1962, 1997.; van Haren, H.: Details of stratification in a sloping bottom boundary layer of Great Meteor Seamount, Geophys. Res. Lett., 32, L07606, doi:10.1029/2004GL022298, 2005.; van Haren, H.: Cruise report bsik/LOCO-IW06: R.V. Pelagia cruise 64PE248, 17 May–12 June 2006, NIOZ, 2006.; van Haren, H., Groenewegen, R., Laan, M., and Koster, B.: High sampling rate thermistor string observations at the slope of Great Meteor Seamount, Ocean Sci., 1, 17–28, 2005.; Zaron, E D. and Egbert, G D.: Estimating open-ocean barotropic tidal dissipation: the Hawaiian Ridge, J. Phys. Oceanogr., 36, 1019–1035, 2006.


 

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