| A rapid method for hydraulic profiling in unconsolidated formations. | |
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MedLine Citation:
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PMID: 18307433 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Information on vertical variations in hydraulic conductivity (K) can often shed much light on how a contaminant will move in the subsurface. The direct-push injection logger has been developed to rapidly obtain such information in shallow unconsolidated settings. This small-diameter tool consists of a short screen located just behind a drive point. The tool is advanced into the subsurface while water is injected through the screen to keep it clear. Upon reaching a depth at which information about K is desired, advancement ceases and the injection rate and pressure are measured on the land surface. The rate and pressure values are used in a ratio that serves as a proxy for K. A vertical profile of this ratio can be transformed into a K profile through regressions with K estimates determined using other techniques. The viability of the approach was assessed at an extensively studied field site in eastern Germany. The assessment demonstrated that this tool can rapidly identify zones that may serve as conduits for or barriers to contaminant movement. |
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Authors:
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Peter Dietrich; James J Butler; Klaus Faiss |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Ground water Volume: 46 ISSN: 1745-6584 ISO Abbreviation: Ground Water Publication Date: 2008 Mar-Apr |
Date Detail:
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Created Date: 2008-02-29 Completed Date: 2008-08-08 Revised Date: 2008-08-13 |
Medline Journal Info:
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Nlm Unique ID: 9882886 Medline TA: Ground Water Country: United States |
Other Details:
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Languages: eng Pagination: 323-8 Citation Subset: IM |
Affiliation:
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Department of Monitoring and Exploration Technologies, Helmholtz Centre for Environmental Research, UFZ, Permoserstrasse 15, D-04318 Leipzig, Germany. peter.dietrich@ufz.de |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Methods Pressure Water* |
| Chemical | |
Reg. No./Substance:
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7732-18-5/Water |
| Comments/Corrections | |
Erratum In:
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Ground Water. 2008 Mar-Apr;46(2):173 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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