Article

 

Modeled ocean circulation in Nares Strait and its dependence on landfast-ice cover Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/bn999b993

This is the publisher’s final pdf. The article is copyrighted by American Geophysical Union and published by John Wiley & Sons, Inc. It can be found at:  http://agupubs.onlinelibrary.wiley.com/agu/jgr/journal/10.1002/%28ISSN%292169-9291/

Access to this item has been restricted by repository administrators at the request of the publisher until June 30, 2016.

Descriptions

Attribute NameValues
Creator
Abstract
  • Two simplified ocean simulations are used to study circulation and transport within Nares Strait. The simulations are similar, except that one included a coupled sea ice model that effectively established a landfast ice cover throughout the simulation year. Comparison between the ocean-only and ocean-ice simulations reveals a systematic change in the current structure, reminiscent of the seasonal shift under mobile and landfast ice previously observed in Nares Strait. A surface-intensified jet, which carries low-salinity water along the strait's centerline, develops within the ocean-only simulation. The current structure under landfast ice is characterized by a subsurface jet located along the western side with low-salinity surface water distributed along the eastern side of the strait. Intermediate salinity water is offset to the west in the ice-ocean simulation relative to the ocean-only simulation, while high-salinity water (>34.8) is constrained to recirculations that are located north and south of a sill in Kane Basin. The simulations, combined with an idealized, semianalytical model, suggest that the structural shift is caused by the surface Ekman layer beneath the landfast ice and the associated eastward advection of near-surface low-salinity water and westward movement of the jet. Temporal variability in the ocean-ice simulation is dominated by the remote response to the time-dependent northern boundary conditions. In contrast, the ocean-only simulation favors an instability and additionally responds to local surface wind forcing, which enhances the variability within the strait above that imposed at the boundaries.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Shroyer, E. L., Samelson, R. M., Padman, L., & Münchow, A. (2015). Modeled ocean circulation in Nares Strait and its dependence on landfast‐ice cover. Journal of Geophysical Research: Oceans, 120(12), 7934-7959. doi:10.1002/2015JC011091
Journal Title
Series
Keyword
Rights Statement
Funding Statement (additional comments about funding)
  • This research was supported by the National Science Foundation, grant ARC-1108463.
Publisher
Peer Reviewed
Language
Replaces

Relationships

Parents:

This work has no parents.

Items