Other Scholarly Content

 

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

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/defaults/08612q21r

Descriptions

Attribute NameValues
Creator
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 depth, the diffusivity atop the ridge was 30 times that 10 km off the ridge, decreasing to background oceanic values by 60 km. A weak (factor of 2) spring–neap variation in dissipation was observed. The observations also suggest a kinematic relationship between the energy in the semidiurnal internal tide (E) and the depth-integrated dissipation (D), such that D ~ E¹±⁰.⁵ at sites along the ridge. This kinematic relationship is supported by combining a simple knife-edge model to estimate internal tide generation, with wave–wave interaction time scales to estimate dissipation. The along-ridge kinematic relationship and the observed vertical and cross-ridge structures are used to extrapolate the relatively sparse observations along the length of the ridge, giving an estimate of 3 ± 1.5 GW of tidal energy lost to turbulence dissipation within 60 km of the ridge. This is roughly 15% of the energy estimated to be lost from the barotropic tide.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Klymak, Jody M., and Coauthors, 2006: An Estimate of Tidal Energy Lost to Turbulence at the Hawaiian Ridge. J. Phys. Oceanogr., 36, 1148–1164.
Series
Rights Statement
Funding Statement (additional comments about funding)
  • This work was funded by the National Science Foundation (Grants 9819537, 9819531, and 9819522).
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2012-01-25T17:18:46Z (GMT). No. of bitstreams: 1MoumJamesN.CEOAS.EstimateTidalEnergy.pdf: 1707554 bytes, checksum: f7f348a494147d2c2dc268eef5ee24be (MD5) Previous issue date: 2006-06
  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2012-01-25T17:18:46ZNo. of bitstreams: 1MoumJamesN.CEOAS.EstimateTidalEnergy.pdf: 1707554 bytes, checksum: f7f348a494147d2c2dc268eef5ee24be (MD5)

Relationships

Parents:

This work has no parents.

Items