Risk assessment methodology for karst aquifers : (1) Estimating karst conduit-flow parameters
Quantitative ground-water tracing of conduit-dominated karst aquifers allows for reliable and practical interpretation of karst ground-water flow. Insights into the hydraulic geometry of the karst aquifer may be acquired that otherwise could not be obtained by such conventional methods as potentiome...
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| Veröffentlicht in: | Environmental monitoring and assessment 1997-08, Vol.47 (1), p.1-21 |
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| creator | FIELD, M. S NASH, S. G |
| description | Quantitative ground-water tracing of conduit-dominated karst aquifers allows for reliable and practical interpretation of karst ground-water flow. Insights into the hydraulic geometry of the karst aquifer may be acquired that otherwise could not be obtained by such conventional methods as potentiometric-surface mapping and aquifer testing. Contamination of karst aquifers requires that a comprehensive tracer budget be performed so that karst conduit hydraulic-flow and geometric parameters be obtained. Acquisition of these parameters is necessary for estimating contaminant fate-and-transport. A FORTRAN computer program for estimating total tracer recovery from tracer-breakthrough curves is proposed as a standard method. Estimated hydraulic-flow parameters include mean residence time, mean flow velocity, longitudinal dispersivity, Peclet number, Reynolds number, and Froude number. Estimated geometric parameters include karst conduit sinuous distance, conduit volume, cross-sectional area, diameter, and hydraulic depth. These parameters may be used to (1) develop structural models of the aquifer, (2) improve aquifer resource management, (3) improve ground-water monitoring systems design, (4) improve aquifer remediation, and (5) assess contaminant fate-and-transport. A companion paper demonstrates the use of these hydraulic-flow and geometric parameters in a surface-water model for estimating contaminant fate-and-transport in a karst conduit. Two ground-water tracing studies demonstrate the utility of this program for reliable estimation of necessary karst conduit hydraulic-flow and geometric parameters.[PUBLICATION ABSTRACT] |
| doi_str_mv | 10.1023/A:1005753919403 |
| format | Article |
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S ; NASH, S. G</creator><creatorcontrib>FIELD, M. S ; NASH, S. G</creatorcontrib><description>Quantitative ground-water tracing of conduit-dominated karst aquifers allows for reliable and practical interpretation of karst ground-water flow. Insights into the hydraulic geometry of the karst aquifer may be acquired that otherwise could not be obtained by such conventional methods as potentiometric-surface mapping and aquifer testing. Contamination of karst aquifers requires that a comprehensive tracer budget be performed so that karst conduit hydraulic-flow and geometric parameters be obtained. Acquisition of these parameters is necessary for estimating contaminant fate-and-transport. A FORTRAN computer program for estimating total tracer recovery from tracer-breakthrough curves is proposed as a standard method. Estimated hydraulic-flow parameters include mean residence time, mean flow velocity, longitudinal dispersivity, Peclet number, Reynolds number, and Froude number. Estimated geometric parameters include karst conduit sinuous distance, conduit volume, cross-sectional area, diameter, and hydraulic depth. These parameters may be used to (1) develop structural models of the aquifer, (2) improve aquifer resource management, (3) improve ground-water monitoring systems design, (4) improve aquifer remediation, and (5) assess contaminant fate-and-transport. A companion paper demonstrates the use of these hydraulic-flow and geometric parameters in a surface-water model for estimating contaminant fate-and-transport in a karst conduit. Two ground-water tracing studies demonstrate the utility of this program for reliable estimation of necessary karst conduit hydraulic-flow and geometric parameters.[PUBLICATION ABSTRACT]</description><identifier>ISSN: 0167-6369</identifier><identifier>EISSN: 1573-2959</identifier><identifier>DOI: 10.1023/A:1005753919403</identifier><identifier>CODEN: EMASDH</identifier><language>eng</language><publisher>Dordrect: Springer</publisher><subject>Aquifer testing ; Aquifers ; Contaminants ; Depth perception ; Earth sciences ; Earth, ocean, space ; Engineering and environment geology. Geothermics ; Environmental monitoring ; Exact sciences and technology ; Flow velocity ; Froude number ; Groundwater ; Groundwater flow ; Hydraulic geometry ; Hydraulics ; Hydrogeology ; Hydrology. 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Estimated hydraulic-flow parameters include mean residence time, mean flow velocity, longitudinal dispersivity, Peclet number, Reynolds number, and Froude number. Estimated geometric parameters include karst conduit sinuous distance, conduit volume, cross-sectional area, diameter, and hydraulic depth. These parameters may be used to (1) develop structural models of the aquifer, (2) improve aquifer resource management, (3) improve ground-water monitoring systems design, (4) improve aquifer remediation, and (5) assess contaminant fate-and-transport. A companion paper demonstrates the use of these hydraulic-flow and geometric parameters in a surface-water model for estimating contaminant fate-and-transport in a karst conduit. Two ground-water tracing studies demonstrate the utility of this program for reliable estimation of necessary karst conduit hydraulic-flow and geometric parameters.[PUBLICATION ABSTRACT]</description><subject>Aquifer testing</subject><subject>Aquifers</subject><subject>Contaminants</subject><subject>Depth perception</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Engineering and environment geology. Geothermics</subject><subject>Environmental monitoring</subject><subject>Exact sciences and technology</subject><subject>Flow velocity</subject><subject>Froude number</subject><subject>Groundwater</subject><subject>Groundwater flow</subject><subject>Hydraulic geometry</subject><subject>Hydraulics</subject><subject>Hydrogeology</subject><subject>Hydrology. 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S</au><au>NASH, S. G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Risk assessment methodology for karst aquifers : (1) Estimating karst conduit-flow parameters</atitle><jtitle>Environmental monitoring and assessment</jtitle><date>1997-08</date><risdate>1997</risdate><volume>47</volume><issue>1</issue><spage>1</spage><epage>21</epage><pages>1-21</pages><issn>0167-6369</issn><eissn>1573-2959</eissn><coden>EMASDH</coden><abstract>Quantitative ground-water tracing of conduit-dominated karst aquifers allows for reliable and practical interpretation of karst ground-water flow. Insights into the hydraulic geometry of the karst aquifer may be acquired that otherwise could not be obtained by such conventional methods as potentiometric-surface mapping and aquifer testing. Contamination of karst aquifers requires that a comprehensive tracer budget be performed so that karst conduit hydraulic-flow and geometric parameters be obtained. Acquisition of these parameters is necessary for estimating contaminant fate-and-transport. A FORTRAN computer program for estimating total tracer recovery from tracer-breakthrough curves is proposed as a standard method. Estimated hydraulic-flow parameters include mean residence time, mean flow velocity, longitudinal dispersivity, Peclet number, Reynolds number, and Froude number. Estimated geometric parameters include karst conduit sinuous distance, conduit volume, cross-sectional area, diameter, and hydraulic depth. These parameters may be used to (1) develop structural models of the aquifer, (2) improve aquifer resource management, (3) improve ground-water monitoring systems design, (4) improve aquifer remediation, and (5) assess contaminant fate-and-transport. A companion paper demonstrates the use of these hydraulic-flow and geometric parameters in a surface-water model for estimating contaminant fate-and-transport in a karst conduit. Two ground-water tracing studies demonstrate the utility of this program for reliable estimation of necessary karst conduit hydraulic-flow and geometric parameters.[PUBLICATION ABSTRACT]</abstract><cop>Dordrect</cop><pub>Springer</pub><doi>10.1023/A:1005753919403</doi><tpages>21</tpages></addata></record> |
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| ispartof | Environmental monitoring and assessment, 1997-08, Vol.47 (1), p.1-21 |
| issn | 0167-6369 1573-2959 |
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| source | SpringerNature Journals |
| subjects | Aquifer testing Aquifers Contaminants Depth perception Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Environmental monitoring Exact sciences and technology Flow velocity Froude number Groundwater Groundwater flow Hydraulic geometry Hydraulics Hydrogeology Hydrology. Hydrogeology Karst Monitoring systems Pollution, environment geology Resource management Reynolds number Risk assessment Structural models Studies Surface water Water flow Water monitoring |
| title | Risk assessment methodology for karst aquifers : (1) Estimating karst conduit-flow parameters |
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