ZEROCD and PROFCD, Description of Two Programs to Supply Quick Information with respect to the Penetration of Tracers into the Soil

2.50
Hdl Handle:
http://hdl.handle.net/10029/257038
Title:
ZEROCD and PROFCD, Description of Two Programs to Supply Quick Information with respect to the Penetration of Tracers into the Soil
Authors:
Veling EJM
Other Titles:
[ZEROCD en PROFCD, beschrijving van twee programma's om snel informatie te verkrijgen over het binnendringen van tracers in de bodem.]
Abstract:
Abstract niet beschikbaar

For a variety of environmental studies it is useful to get a quick impression of how certain tracers penetrate the soil. Under some restrictive assumptions, it is possible to predict the concentration and the amount of material which has passed, and which is present, below some level without the detailed knowledge of the structure of the soil matrix. In this report a survey is given of formulas describing the behaviour of a tracer without or with decay with linear adsorption in a one-dimensional semi-infinite medium with various boundary conditions. These boundary conditions are: instantaneous injection or exposure, continuous injection or exposure, or block pulse injection or exposure. Interest is focussed on the questions at what time a specified amount of material is present below or has passed a givin depth. A computer program is described which supplies an answer to this question (ZEROCD). Another computer program (PROFCD) visualizes all relevant results (resident and flux concentration, resident and transported mass, fraction of resident (or transported) mass to total injected amount). Although the underlying assumptions may be too simple for realistic situations, yet, by varying the input parameters, the user can find upper and lower bounds for various unknowns (e.g. concentration, time of arrival and so on), without much modelling effort, because the time of calculation of both programs is very short. The latter may also facilitate the performance of a formal uncertainty analysis. Furthermore, its very short calculation time makes this software package pre-eminently useful to produce a first, rapid assessment of the evolution of pollution in a wide range of typical soil profiles within the framework of large scale environmental studies. Another application of the programs is the possibility to serve as a reference for verification of numerical computer codes, a key element of the INTRAVEL project.
Issue Date:
31-Mar-1993
URI:
http://hdl.handle.net/10029/257038
Additional Links:
http://www.rivm.nl/bibliotheek/rapporten/725206009.html
Type:
Onderzoeksrapport
Language:
en
Sponsors:
DGM/SVS
Appears in Collections:
RIVM official reports

Full metadata record

DC FieldValue Language
dc.contributor.authorVeling EJM-
dc.date.accessioned2012-12-12T14:59:08Z-
dc.date.available2012-12-12T14:59:08Z-
dc.date.issued1993-03-31-
dc.identifier725206009-
dc.identifier.urihttp://hdl.handle.net/10029/257038-
dc.description.abstractAbstract niet beschikbaarnl
dc.description.abstractFor a variety of environmental studies it is useful to get a quick impression of how certain tracers penetrate the soil. Under some restrictive assumptions, it is possible to predict the concentration and the amount of material which has passed, and which is present, below some level without the detailed knowledge of the structure of the soil matrix. In this report a survey is given of formulas describing the behaviour of a tracer without or with decay with linear adsorption in a one-dimensional semi-infinite medium with various boundary conditions. These boundary conditions are: instantaneous injection or exposure, continuous injection or exposure, or block pulse injection or exposure. Interest is focussed on the questions at what time a specified amount of material is present below or has passed a givin depth. A computer program is described which supplies an answer to this question (ZEROCD). Another computer program (PROFCD) visualizes all relevant results (resident and flux concentration, resident and transported mass, fraction of resident (or transported) mass to total injected amount). Although the underlying assumptions may be too simple for realistic situations, yet, by varying the input parameters, the user can find upper and lower bounds for various unknowns (e.g. concentration, time of arrival and so on), without much modelling effort, because the time of calculation of both programs is very short. The latter may also facilitate the performance of a formal uncertainty analysis. Furthermore, its very short calculation time makes this software package pre-eminently useful to produce a first, rapid assessment of the evolution of pollution in a wide range of typical soil profiles within the framework of large scale environmental studies. Another application of the programs is the possibility to serve as a reference for verification of numerical computer codes, a key element of the INTRAVEL project.en
dc.description.sponsorshipDGM/SVS-
dc.format.extent44 p-
dc.language.isoen-
dc.relation.ispartofRIVM Rapport 725206009-
dc.relation.urlhttp://www.rivm.nl/bibliotheek/rapporten/725206009.html-
dc.subject13nl
dc.subjectbodemnl
dc.subjectmerkstofnl
dc.subjectsoftwarenl
dc.subjecttracersen
dc.subjectsoilen
dc.subjectsoftwareen
dc.subjectconvectie-diffusieen
dc.subjectretardatieen
dc.subjectafbraaken
dc.subjectconvection-diffusionen
dc.subjectretardationen
dc.subjectdecayen
dc.titleZEROCD and PROFCD, Description of Two Programs to Supply Quick Information with respect to the Penetration of Tracers into the Soilen
dc.title.alternative[ZEROCD en PROFCD, beschrijving van twee programma's om snel informatie te verkrijgen over het binnendringen van tracers in de bodem.]nl
dc.typeOnderzoeksrapport-
dc.date.updated2012-12-12T14:59:09Z-
All Items in WARP are protected by copyright, with all rights reserved, unless otherwise indicated.