A model for diagnostic analysis of estuarine geochemistry

Tamara M. Wood, Antonio Baptista

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A new numerical model for the fate and transport of nonconservative metals in an estuarine environment is introduced. ELAmet solves the depth‐averaged advection/dispersion/transformation equation on a two‐dimensional grid using a finite element formulation in an Eulerian‐Lagrangian framework. The model incorporates aqueous speciation and adsorption/desorption. Adsorption to any number of solid types can take place through linear (partitioning) reactions or nonlinear (complexation) reactions. The model accommodates chemical equilibria and kinetics simultaneously. Rate constants can span any range of time scales, as the computational time step for solving the chemical transformation equations has been decoupled from that dictated by the circulation. Verification of the model is included for a one‐dimensional channel and up to 15 chemical species. Preliminary applications are included which illustrate the concept of diagnostic modeling for a synthetic estuarine system in which the effects of source location, chemical kinetics, and sediment deposition on the mixing plot are examined.

Original languageEnglish (US)
Pages (from-to)51-71
Number of pages21
JournalWater Resources Research
Volume29
Issue number1
DOIs
StatePublished - 1993
Externally publishedYes

Fingerprint

Geochemistry
geochemistry
Adsorption
adsorption
fate and transport models
Advection
chemical equilibrium
Complexation
kinetics
Reaction kinetics
chemical speciation
sediment deposition
Numerical models
estuarine environment
Rate constants
Desorption
Sediments
Metals
complexation
desorption

ASJC Scopus subject areas

  • Water Science and Technology
  • Aquatic Science
  • Environmental Science(all)
  • Environmental Chemistry

Cite this

A model for diagnostic analysis of estuarine geochemistry. / Wood, Tamara M.; Baptista, Antonio.

In: Water Resources Research, Vol. 29, No. 1, 1993, p. 51-71.

Research output: Contribution to journalArticle

@article{131788e353d845bab0b8f6dd3eb1676b,
title = "A model for diagnostic analysis of estuarine geochemistry",
abstract = "A new numerical model for the fate and transport of nonconservative metals in an estuarine environment is introduced. ELAmet solves the depth‐averaged advection/dispersion/transformation equation on a two‐dimensional grid using a finite element formulation in an Eulerian‐Lagrangian framework. The model incorporates aqueous speciation and adsorption/desorption. Adsorption to any number of solid types can take place through linear (partitioning) reactions or nonlinear (complexation) reactions. The model accommodates chemical equilibria and kinetics simultaneously. Rate constants can span any range of time scales, as the computational time step for solving the chemical transformation equations has been decoupled from that dictated by the circulation. Verification of the model is included for a one‐dimensional channel and up to 15 chemical species. Preliminary applications are included which illustrate the concept of diagnostic modeling for a synthetic estuarine system in which the effects of source location, chemical kinetics, and sediment deposition on the mixing plot are examined.",
author = "Wood, {Tamara M.} and Antonio Baptista",
year = "1993",
doi = "10.1029/92WR02126",
language = "English (US)",
volume = "29",
pages = "51--71",
journal = "Water Resources Research",
issn = "0043-1397",
publisher = "American Geophysical Union",
number = "1",

}

TY - JOUR

T1 - A model for diagnostic analysis of estuarine geochemistry

AU - Wood, Tamara M.

AU - Baptista, Antonio

PY - 1993

Y1 - 1993

N2 - A new numerical model for the fate and transport of nonconservative metals in an estuarine environment is introduced. ELAmet solves the depth‐averaged advection/dispersion/transformation equation on a two‐dimensional grid using a finite element formulation in an Eulerian‐Lagrangian framework. The model incorporates aqueous speciation and adsorption/desorption. Adsorption to any number of solid types can take place through linear (partitioning) reactions or nonlinear (complexation) reactions. The model accommodates chemical equilibria and kinetics simultaneously. Rate constants can span any range of time scales, as the computational time step for solving the chemical transformation equations has been decoupled from that dictated by the circulation. Verification of the model is included for a one‐dimensional channel and up to 15 chemical species. Preliminary applications are included which illustrate the concept of diagnostic modeling for a synthetic estuarine system in which the effects of source location, chemical kinetics, and sediment deposition on the mixing plot are examined.

AB - A new numerical model for the fate and transport of nonconservative metals in an estuarine environment is introduced. ELAmet solves the depth‐averaged advection/dispersion/transformation equation on a two‐dimensional grid using a finite element formulation in an Eulerian‐Lagrangian framework. The model incorporates aqueous speciation and adsorption/desorption. Adsorption to any number of solid types can take place through linear (partitioning) reactions or nonlinear (complexation) reactions. The model accommodates chemical equilibria and kinetics simultaneously. Rate constants can span any range of time scales, as the computational time step for solving the chemical transformation equations has been decoupled from that dictated by the circulation. Verification of the model is included for a one‐dimensional channel and up to 15 chemical species. Preliminary applications are included which illustrate the concept of diagnostic modeling for a synthetic estuarine system in which the effects of source location, chemical kinetics, and sediment deposition on the mixing plot are examined.

UR - http://www.scopus.com/inward/record.url?scp=0027341266&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027341266&partnerID=8YFLogxK

U2 - 10.1029/92WR02126

DO - 10.1029/92WR02126

M3 - Article

AN - SCOPUS:0027341266

VL - 29

SP - 51

EP - 71

JO - Water Resources Research

JF - Water Resources Research

SN - 0043-1397

IS - 1

ER -