### Abstract

This paper analyzes the use of localized sigma coordinates in the numerical solution of the vertical structure of coastal flows. We show, through a combination of truncation error analysis and 2D (vertical) numerical experimentation, that localized sigma coordinates have two important advantages over the more traditional domain-wide sigma coordinates: the evaluation of horizontal gradients of density in the presence of steep bottom slopes is more accurate, and the vertical discretization can be freely placed where it is needed. These two advantages appear to far out weight, for practical situations, the restrictions imposed by the fact that the localized sigma coordinates are only conditionally consistent.

Original language | English (US) |
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Title of host publication | Proc 3 Int Conf Estuarine Coastal Model 3 |

Editors | Malcolm L. Spaulding, Keith Bedford, Alan Blumberg, Ralph Cheng, Craig Swanson |

Publisher | Publ by ASCE |

Pages | 323-335 |

Number of pages | 13 |

ISBN (Print) | 0872629759 |

State | Published - Jan 1 1994 |

Event | Proceedings of the 3rd International Conference on Estuarine and Coastal Modeling III - Oak Brook, IL, USA Duration: Sep 8 1993 → Sep 10 1993 |

### Publication series

Name | Proc 3 Int Conf Estuarine Coastal Model 3 |
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### Other

Other | Proceedings of the 3rd International Conference on Estuarine and Coastal Modeling III |
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City | Oak Brook, IL, USA |

Period | 9/8/93 → 9/10/93 |

### ASJC Scopus subject areas

- Engineering(all)

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## Cite this

*Proc 3 Int Conf Estuarine Coastal Model 3*(pp. 323-335). (Proc 3 Int Conf Estuarine Coastal Model 3). Publ by ASCE.