Articles liés à NUMERICAL MODELING OF REVERSING GROUNDWATER: USING...

NUMERICAL MODELING OF REVERSING GROUNDWATER: USING LABORATORY DENITRIFICATION - Couverture souple

David, Xiang

 
9783838333878: NUMERICAL MODELING OF REVERSING GROUNDWATER: USING LABORATORY DENITRIFICATION
Couverture souple
ISBN 10 : 383833387X ISBN 13 : 9783838333878
Editeur : LAP Lambert Academic Publishing, 2010

Synopsis

Nitrate, typically derived from agricultural runoff and wastewater disposal, is the most widespread groundwater contaminant in the United States. A series of two- and three-dimensional finite-element groundwater models are presented here to simulate groundwater nitrate transport and remediation in the Florida Keys, where wastewater injection is suspected of contributing to the deterioration of the offshore coral reef. These models include quantification of the hydrogeology of reversing groundwater flow due to tidal pumping and nitrate removal rates based on a new application of a molecular technique for measuring microbial respiration rates. Physical constraints on tidal pumping, including comparisons of net to total submarine groundwater discharge rates and the variable-density mixing of recirculated seawater, were derived from observed tidal properties and published aquifer characteristics, with model calibration to previously conducted tracer experiments. The model demonstrates that even moderate tidal fluctuations are capable of driving reversing groundwater flow patterns, with net groundwater velocities and tracer distributions that closely match field measurements.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

Nitrate, typically derived from agricultural runoff and wastewater disposal, is the most widespread groundwater contaminant in the United States. A series of two- and three-dimensional finite-element groundwater models are presented here to simulate groundwater nitrate transport and remediation in the Florida Keys, where wastewater injection is suspected of contributing to the deterioration of the offshore coral reef. These models include quantification of the hydrogeology of reversing groundwater flow due to tidal pumping and nitrate removal rates based on a new application of a molecular technique for measuring microbial respiration rates. Physical constraints on tidal pumping, including comparisons of net to total submarine groundwater discharge rates and the variable-density mixing of recirculated seawater, were derived from observed tidal properties and published aquifer characteristics, with model calibration to previously conducted tracer experiments. The model demonstrates that even moderate tidal fluctuations are capable of driving reversing groundwater flow patterns, with net groundwater velocities and tracer distributions that closely match field measurements.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP Lambert Academic Publishing
Date d'édition
2010
Langue
anglais
ISBN 10 
383833387X
ISBN 13 
9783838333878
Reliure
Broché
Nombre de pages
144
Coordonnées du fabricant
non disponible
Personne responsable
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