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Adjustment and Extension of the Hansen and Rattray Estuarine Classification Diagram

Adjustment and Extension of the Hansen and Rattray Estuarine Classification Diagram AbstractThe classification diagram developed by Hansen and Rattray is one of the classic papers on classification of estuarine salinity dynamics. However, we found several inconsistencies in both their stratification–circulation and estuarine classification diagrams. These findings considerably change the interpretation of their work. Furthermore, while their classification includes salt wedge estuaries, the model used to derive this is only applicable to well-mixed and partially mixed estuaries. Here, we identify and solve these inconsistencies, and we propose new adjusted and extended stratification–circulation and classification diagrams. To this end, we summarize the model of Hansen and Rattray and extend their work to find analytical model solutions and an adjusted stratification–circulation diagram. Using this new diagram, it is shown that Hansen and Rattray incorrectly discussed the behavior of dispersion-dominated estuaries and that several parts of the diagram correspond to physically unrealistic model solutions. This is then used to demonstrate that several estuarine classes identified by Hansen and Rattray correspond to physically unrealistic model solutions and can therefore not be interpreted. A new and extended classification is proposed by using a recently developed model that extends the work of Hansen and Rattray to salt wedge estuaries. This results in an extended estuarine classification including examples of the location of 12 estuaries in this new diagram. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Physical Oceanography American Meteorological Society

Adjustment and Extension of the Hansen and Rattray Estuarine Classification Diagram

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References (32)

Publisher
American Meteorological Society
Copyright
Copyright © American Meteorological Society
ISSN
1520-0485
eISSN
1520-0485
DOI
10.1175/JPO-D-21-0021.1
Publisher site
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Abstract

AbstractThe classification diagram developed by Hansen and Rattray is one of the classic papers on classification of estuarine salinity dynamics. However, we found several inconsistencies in both their stratification–circulation and estuarine classification diagrams. These findings considerably change the interpretation of their work. Furthermore, while their classification includes salt wedge estuaries, the model used to derive this is only applicable to well-mixed and partially mixed estuaries. Here, we identify and solve these inconsistencies, and we propose new adjusted and extended stratification–circulation and classification diagrams. To this end, we summarize the model of Hansen and Rattray and extend their work to find analytical model solutions and an adjusted stratification–circulation diagram. Using this new diagram, it is shown that Hansen and Rattray incorrectly discussed the behavior of dispersion-dominated estuaries and that several parts of the diagram correspond to physically unrealistic model solutions. This is then used to demonstrate that several estuarine classes identified by Hansen and Rattray correspond to physically unrealistic model solutions and can therefore not be interpreted. A new and extended classification is proposed by using a recently developed model that extends the work of Hansen and Rattray to salt wedge estuaries. This results in an extended estuarine classification including examples of the location of 12 estuaries in this new diagram.

Journal

Journal of Physical Oceanography – American Meteorological Society

Published: Sep 26, 2021

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