Tide-topography coupling on a continental slope Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/cr56n3268

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Tide-topography coupling is important for understanding surface-tide energy loss, the intermittency of internal tides, and the cascade of internal-tide energy from large to small scales. Although tide-topography coupling has been observed and modeled for 50 years, the identification of surface and internal tides over arbitrary topography has not been standardized. Here, we begin by examining five surface/internal-tide decompositions and find that only one is (i) consistent with the normal-mode description of tides over a flat bottom, (ii) produces a physically meaningful depth-structure of internal-tide energy flux, and (iii) results in an established expression for internal-tide generation. Next, we examine the expression for internal-tide generation and identify how it is influenced by remotely-generated shoaling internal tides. We show that internal-tide generation is subject to both resonance and intermittency, and can not always be predicted from isolated regional models. Lastly, we quantify internal-tide generation and scattering on the Oregon Continental slope. First, we derive a previously unpublished expression for inter-modal energy conversion. Then we evaluate it using observations and numerical simulations. We find that the surface tide generates internal tides, which propagate offshore; while at the same time, low-mode internal tides shoal on the slope, scatter, and drive turbulent mixing. These results suggest that internal tides are unlikely to survive reflection from continental slopes, and that continental margins play an important role in deep-ocean tidal-energy dissipation.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Keyword
Subject
Rights Statement
Language
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2011-01-24T17:04:15Z (GMT). No. of bitstreams: 3 license_rdf: 21755 bytes, checksum: eaa6a1b0f59554f6c24f682a7820bfa8 (MD5) license_text: 18701 bytes, checksum: 1409a7508f116fd191754a9a5aa9925f (MD5) KellySamuelM2010.pdf: 15805938 bytes, checksum: ce2f0329f34443ed594fa23bf73f831b (MD5)
  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2011-01-24T17:04:15Z (GMT) No. of bitstreams: 3 license_rdf: 21755 bytes, checksum: eaa6a1b0f59554f6c24f682a7820bfa8 (MD5) license_text: 18701 bytes, checksum: 1409a7508f116fd191754a9a5aa9925f (MD5) KellySamuelM2010.pdf: 15805938 bytes, checksum: ce2f0329f34443ed594fa23bf73f831b (MD5)
  • description.provenance : Submitted by Samuel Kelly (kellysa@onid.orst.edu) on 2010-12-23T00:31:50Z No. of bitstreams: 3 KellySamuelM2010.pdf: 15805931 bytes, checksum: a9b80c588de840b2e01d9bd2db2f2e76 (MD5) license_text: 18701 bytes, checksum: 1409a7508f116fd191754a9a5aa9925f (MD5) license_rdf: 21755 bytes, checksum: eaa6a1b0f59554f6c24f682a7820bfa8 (MD5)
  • description.provenance : Rejected by Julie Kurtz(julie.kurtz@oregonstate.edu), reason: Rejecting to make the revision to the Approval page for the electronic submission. Once revised, open the item that was rejected. Replace the attached copy with the revised copy and resubmit. Thanks, Julie on 2011-01-19T21:07:48Z (GMT)
  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2011-01-20T16:30:57Z (GMT) No. of bitstreams: 3 license_rdf: 21755 bytes, checksum: eaa6a1b0f59554f6c24f682a7820bfa8 (MD5) license_text: 18701 bytes, checksum: 1409a7508f116fd191754a9a5aa9925f (MD5) KellySamuelM2010.pdf: 15805938 bytes, checksum: ce2f0329f34443ed594fa23bf73f831b (MD5)
  • description.provenance : Submitted by Samuel Kelly (kellysa@onid.orst.edu) on 2011-01-19T21:38:35Z No. of bitstreams: 3 license_rdf: 21755 bytes, checksum: eaa6a1b0f59554f6c24f682a7820bfa8 (MD5) license_text: 18701 bytes, checksum: 1409a7508f116fd191754a9a5aa9925f (MD5) KellySamuelM2010.pdf: 15805938 bytes, checksum: ce2f0329f34443ed594fa23bf73f831b (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items