Simulation of heat and moisture transfer through a surface residue-soil system

Saved in:
Authors:Bristow, Keith Leslie
Source:74p. Institution: Washington State University, Pullman, WA, United States
Publication Date:1983
Note:In English. Doctoral dissertation
Summary:The model couples residue to the soil-atmosphere system in a fundamental way, and makes use of a network analysis approach to describe heat and moisture transfer. Environmental data recorded at Pullman, WA, between 1 September 1981 and 31 August, 1982, were used for the simulations. The residue loading rate equaled 3000 kg ha-1 which yielded an area index of 1 and formed a layer 0.01 m thick. Simulated temperatures and water potentials in the residue and soil were used to obtain rate factors for expressing environmental control on microbiological reaction rates. Daily rate factors in the surface residue occurred as a series of spikes, increasing dramatically on days with precipitation, and decreasing rapidly with residue drying. Daily oscillations within the soil were pronounced. Seasonal variation was imposed by the annual temperature cycle which virtually stopped activity in winter. Surface residue rate factors indicated existence of optimum conditions for an equivalent of 20 days during the year. For Pullman conditions, surface residues decreased evaporation by roughly 30% when compared to bare soil evaporation. Monthly trends, however, indicate that surface residues could enhance water loss in areas experiencing long periods without rain. Modified author abstract.
Subjects:Engineering geology; Exploration; Heat transfer; Models; Seasonal variations; Simulation; Soils; Surveys; Waste disposal; Water balance; Columbia Plateau; United States; Washington; Whitman County Washington; Moisture transfer; Pullman; Southeastern Washington; Surface residues
Coordinates:N460000 N460000 W1170000 W1170000
Record ID:1984043678
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute.
Tags: Add Tag
No Tags, Be the first to tag this record!