Article

 

Oceanic Isopycnal Slope Spectra. Part II: Turbulence Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/7s75dd83j

Descriptions

Attribute NameValues
Creator
Abstract
  • Isopycnal slope spectra were computed from thermistor data obtained using a microstructure platform towed through turbulence generated by internal tidal motions near the Hawaiian Ridge. The spectra were compared with turbulence dissipation rates ε that are estimated using shear probes. The turbulence subrange of isopycnal slope spectra extends to surprisingly large horizontal wavelengths (>100 m). A fourorder- of-magnitude range in turbulence dissipation rates at this site reveals that isopycnal slope spectra ∝ε²/³kₓ¹/³. The turbulence spectral subrange (kₓ > 0.4 cpm) responds to the dissipation rate as predicted by the Batchelor model spectrum, both in amplitude and towed vertical coherence. Scales between 100 and 1000 m are modeled by a linear combination of internal waves and turbulence while at larger scales internal waves dominate. The broad bandwidth of the turbulence subrange means that a fit of spectral amplitude to the Batchelor model yields reasonable estimates of ε, even when applied at scales of tens of meters that in vertical profiles would be obscured by other fine structure.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Klymak, Jody M., James N. Moum, 2007: Oceanic Isopycnal Slope Spectra. Part II: Turbulence. J. Phys. Oceanogr., 37, 1232–1245.
Journal Title
Journal Volume
  • 37
Journal Issue/Number
  • 5
Rights Statement
Funding Statement (additional comments about funding)
  • This workwas funded by the National Science Foundation Grants9819531 and 9819522.
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2012-01-25T17:07:37Z (GMT). No. of bitstreams: 1MoumJamesN.CEOAS.OceanicIsopycnalSlopeII.pdf: 1214214 bytes, checksum: c83d2d081d788a507a1cc76c1de736cb (MD5) Previous issue date: 2007-05
  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2012-01-25T17:07:37ZNo. of bitstreams: 1MoumJamesN.CEOAS.OceanicIsopycnalSlopeII.pdf: 1214214 bytes, checksum: c83d2d081d788a507a1cc76c1de736cb (MD5)

Relationships

Parents:

This work has no parents.

Items