USGS - science for a changing world

Environmental Health - Toxic Substances

Bibliography

U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting Charleston South Carolina March 8-12,1999--Volume 1 of 3--Contamination From Hard-Rock Mining, Water-Resources Investigation Report 99-4018A

Table of Contents

Modeling Solute Transport and Geochemistry in Streams and Rivers Using OTIS and OTEQ

By Robert L. Runkel, Kenneth E. Bencala, and Briant A. Kimball

This report is available in pdf format : pdf Runkle.pdf 62KB

Abstract

Solute transport in streams is governed by a suite of hydrologic and geochemical processes. Interactions between hydrologic processes and chemical reactions may be quantified through a combination of field-scale experimentation and simulation modeling. Two mathematical models that are used to simulate solute transport in streams are presented here. A model that considers One-dimensional Transport with Inflow and Storage (OTIS) may be used in conjunction with tracer-dilution methods to quantify hydrologic transport processes (advection, dispersion, and transient storage). Additional applications of OTIS include analyses of nonconservative solutes that are subject to sorption processes and (or) first-order decay. A second model, OTEQ (One-dimensional Transport with EQulibrium chemistry), combines the transport mechanisms in OTIS with a chemical equilibrium submodel that considers complexation, precipitation/dissolution, and sorption. OTEQ may be used to quantify the geochemical processes affecting trace metals.

Table of Contents

USGS Home Water Climate Change Science Systems Ecosystems Energy and Minerals Environmental Health Hazards

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://toxics.usgs.gov/pubs/wri99-4018/Volume1/sectionB/1301_Runkel/index.html
Page Contact Information:
Page Last Modified: Tuesday, 06-May-2014 14:37:01 EDT