Graduate Thesis Or Dissertation

 

Shear and convective turbulence in a model of thermohaline intrusions 公开 Deposited

可下载的内容

下载PDF文件
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/b2773z89w

Header

Attribute Name LabelAttribute Values Label
Creator
Abstract
  • Thermohaline interleaving is an important mechanism for laterally fluxing salt, heat, and nutrients between oceanic water masses. Interleaving is driven by a release of potential energy resulting from the vastly differing diffusivities of heat and salt in seawater. The flows are composed of stacked intrusions that flux more buoyant and less buoyant water in opposite directions. In this paper, we investigate the role of shear instability (caused by this juxtaposed motion) and convective instability on intrusion growth. The model described in Walsh and Ruddick (1998) is upgraded to include an improved convective mixing parameterization and a parameterization of shear induced turbulent mixing. Model results show that shear and convective mixing play a similar and significant role in interleaving dynamics. In the absence of either instability, horizontal diffusivities are increased by approximately 30%. This increase is a product of the relationship between these instabilities and kinetic energy, which is inversely affected by shear and convective instabilities. Sensitivity tests show that the model accurately predicts horizontal diffusivities within an observed range, in spite of a wide range of model parameter values.
Resource Type
Date available
Date copyright
Date issued
Degree Level
Degree Name
Degree Field
Degree Grantors
Graduation Year
Contributor Advisor
Contributor Committeemember
Academic Affiliation
Other Affiliation
关键词
Subject
权利声明
Language
File Format
File Extent
  • 46253827 bytes
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2006-04-19T17:35:31Z (GMT). No. of bitstreams: 1 RMueller_Thesis.pdf: 46253827 bytes, checksum: ca14f217fda34a03182a0644f116e054 (MD5)
  • description.provenance : Submitted by Rachael Mueller (muellerr) on 2006-04-13T21:58:23Z No. of bitstreams: 1 RMueller_Thesis.pdf: 46253827 bytes, checksum: ca14f217fda34a03182a0644f116e054 (MD5)
  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2006-04-18T17:42:01Z (GMT) No. of bitstreams: 1 RMueller_Thesis.pdf: 46253827 bytes, checksum: ca14f217fda34a03182a0644f116e054 (MD5)

关联

Relationships Parent Rows Label

Rows Empty Text

属于 Collection:

单件