Estuary classification revisited

Anirban Guha (Lead / Corresponding author), Gregory A. Lawrence

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Studies over a period of several decades have resulted in a relatively simple set of equations describing the tidally and width-averaged balances of momentum and salt in a rectangular estuary. The authors rewrite these equations in a fully nondimensional form that yields two nondimensional variables: (i) the estuarine Froude number and (ii) a modified tidal Froude number. The latter is the product of the tidal Froude number and the square root of the estuarine aspect ratio. These two variables are used to define a prognostic estuary classification scheme, which compares favorably with published estuarine data.

Original languageEnglish
Pages (from-to)1566-1571
Number of pages6
JournalJournal of Physical Oceanography
Issue number8
Publication statusPublished - 17 Sept 2013


  • Estuaries

ASJC Scopus subject areas

  • Oceanography


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