A Computer Routing of Unsaturated Flow through Snow.

Computer programs for routing the vertical movement of water through snow have been developed. Previously, manual graphical techniques were used, making calculation of the flow and shock front a very time-consuming procedure. The shock front is dependent on surface melt taking place now as well as t...

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Bibliographic Details
Main Authors: Tucker,Walter B , III, Colbeck,Samuel C
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1977
Subjects:
Hydrology
Limnology and Potamology
Snow
Ice and Permafrost
Computer Programming and Software
*WATER FLOW
*SNOW
COMPUTER PROGRAMS
MATHEMATICAL MODELS
DENSITY
PARTICLE SIZE
SHOCK WAVES
FORECASTING
POROSITY
SNOW COVER
MATHEMATICAL PREDICTION
VERTICAL ORIENTATION
ERRORS
MELTING
RUNOFF
SINE WAVES
WU001
PE61102A
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA040121
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA040121
Description
Summary:Computer programs for routing the vertical movement of water through snow have been developed. Previously, manual graphical techniques were used, making calculation of the flow and shock front a very time-consuming procedure. The shock front is dependent on surface melt taking place now as well as the antecedent flow in the snow, usually a function of the nature of the flow for the previous day. One program, designed to accommodate actual surface melt data, has the ability to handle complicated input profiles such as when melt is erratic on a cloudy day, creating such complexities as intersecting shock fronts. Another program, designed for rapid simulation purposes, approximates a simple surface input with a function, in this case a sine wave. This function is easily changed, allowing a variety of conditions to be assessed, although only one shock front is accommodated. Error analysis and some applications of the programs are presented. (Author)

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