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Home Sediment Transport and Pathogen Indicator Modeling in Lake Pontchartrain

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Sediment Transport and Pathogen Indicator Modeling in Lake Pontchartrain

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Contact Information	Please send any questions regarding this item to libref@uno.edu
Title	Sediment Transport and Pathogen Indicator Modeling in Lake Pontchartrain
Author	Chilmakui, Chandra Sekhar
Document Type	Dissertation
Keywords	Sediment dynamics; Hydrodynamic modeling; Fecal coliform modeling
Abstract	A nested three dimensional numerical modeling application was developed to determine the fate of pathogen indicators in Lake Pontchartrain discharged from its tributaries. To accomplish this, Estuarine, coastal and ocean model with sediment (ECOMSED) was implemented to simulate various processes that would determine the fate and transport of fecal coliform bacteria in the lake. The processes included hydrodynamics, waves, sediment transport, and the decay and transport of the fecal coliforms. Wind and tidal effects were accounted along with the freshwater inflows. All the components of the modeling application were calibrated and validated using measured data sets. Field measurements of the conventional water quality parameters and fecal coliform levels were used to calibrate and validate the pathogen indicator transport. The decay of the fecal coliforms was based on the literature and laboratory tests. The sediment transport module was calibrated based on the satellite reflectance data in the lake. The north shore near-field model indicated that the fecal coliform plume can be highly dynamic and sporadic depending on the wind and tide conditions. It also showed that the period of impact due to a storm event on the fecal coliform levels in the lake can be anywhere from 1.5 days for a typical summer event to 4 days for an extreme winter event. The model studies showed that the zone of impact of the stormwater from the river was limited to a few hundred meters from the river mouth. Finally, the modeling framework developed for the north shore was successfully applied to the south shore of Lake Pontchartrain to simulate fate and transport of fecal coliforms discharged through the urban stormwater outfalls.
Access	Unrestricted
Degree	Ph. D.
Degree Program	Engineering and Applied Science
Department	Dept. of Civil and Environmental Engineering
Major Professor	McCorquodale, J. Alex
Advisory Committee	Outlaw, Curtis; Barbe, Donald; Cothren, Gianna; Georgiou, Ioannis; Guillot, Martin
Date Degree Awarded	2006-01-20; *
Format	PDF
URL	See 'reference url' on top or bottom navigation bars.
Relation	http://louisdl.louislibraries.org/NOD/Pages/home.php
Rights	The University of New Orleans and its agents retain the non-exclusive license to archive and make accessible this dissertation or thesis in whole or in part in all forms of media, now or hereafter known. The author retains all other ownership rights to the copyright of the thesis or dissertation.
Catalog Date	2006-09-29; *
Object File Name	nd000281
Viewer Information	Adobe Reader required for viewing (http://www.adobe.com/products/acrobat/readermain.html)
File Size	4198.78 KB
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