National Library of Australia

You must be logged in to Tag Records
Interaction between the coastal ocean and the estuarine systems / Rao, Shivanesh Arvinda
Bib ID 7124084
Format MicroformMicroform, BookBook [text, microfiche]
Author
Rao, Shivanesh Arvinda, author
 
Description Ann Arbor : ProQuest Dissertations & Theses, 2012 
146 p. 
ISBN 9781267990877
Summary

Fluctuating winds change the interaction between an estuary and its adjacent coastal ocean. This change in the interaction determines how the wind-induced changes in the estuary influence the near-shore coastal ocean and vice-versa. The first chapter examines the water properties in the near-shore coastal region close to estuaries after coastal upwelling. In regions where the time-integrated upwelling and down-welling wind stresses are comparable, there exists a region in the direction of a coastal Kevin wave propagation from an estuary, where the arrival of the plume in the near-shore region prevents the upwelled front from returning to the coast. The weakened vertical stratification in the plume during down-welling winds allows vertical mixing, so the weak cross-shore flow in the plume stops the front from returning to the coast.

The final chapter examines how the steady state of an estuary is altered, when forced by weather-band fluctuations in the wind. For timescales longer than Tadj, the influence of fluctuating winds on the stratification or the exchange of an estuary is not significant, but instead the fluctuating winds alter the salt intrusion length of the estuary. However, when Tadj (when forced by fluctuating winds) is short compared to the time of the initial change caused by the vertical mixing, the influence of fluctuating winds in a stratified estuary reduces the stratification and the exchange.

The second chapter examines the transient response of the interaction between an estuary and its adjoining coastal ocean, when forced by weather-band fluctuations in the wind. Over timescales shorter than the time taken for the estuary to adjust to a new steady state, Tadj, the initial stratification of an estuary and the coastal ocean control the influence of fluctuating winds on the salt exchange between the two regions. The wind-induced mixing in the estuary has by far the greatest effect on the salt exchange, compared to the coastal upwelling and down-welling. The changes in the salt exchange are largely due to changes in the salinity leaving and entering the estuary, and not the volume exchange.

Notes

Advisors: James Pringle.

Source: Dissertation Abstracts International, Volume: 74-07(E), Section: B.

English

Subjects Biological oceanography.  |  Physical oceanography.
Other authors/contributors University of New Hampshire. degree granting institution

Online

    In the Library

    Request this item to view in the Library's reading rooms using your library card. To learn more about how to request items watch this short online video Help Video.

    Details Collect From
    mc 252 35-37826 Main Reading Room - Newspapers and Family History

    Order a copy

    - Copyright or permission restrictions may apply. We will contact you if necessary.

    Help Video To learn more about Copies Direct watch this short online video Help Video.
    close Can I borrow items from the Library?

    You need Flash player 8+ and JavaScript enabled to view this video embedded.

    You can view this on the NLA website.

    close What can I get online?

    You need Flash player 8+ and JavaScript enabled to view this video embedded.

    You can view this on the NLA website.

    close Can I get copies of items from the Library?

    You need Flash player 8+ and JavaScript enabled to view this video embedded.

    You can view this on the NLA website.

    Aboriginal and Torres Strait Islander Flags
    Aboriginal, Torres Strait Islander and other First Nations people are advised that this catalogue contains names, recordings and images of deceased people and other content that may be culturally sensitive. Please also be aware that you may see certain words or descriptions in this catalogue which reflect the author’s attitude or that of the period in which the item was created and may now be considered offensive.