ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1969.tb01261.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

ABSTRACTThe measure of earth resistivity is a possible means of detecting and outlining zones of ground‐water contamination where a resistivity contrast exists between contaminated and unconcaminated ground water.As a preliminary evaluation of the use of electrical resistivity for defining zones of contaminated ground water, five sites on Long Island and three sites in western Texas were examined. The surveys at three of the Long Island sites and at one of the western Texas sites were at least partially successful in their objectives. The lack of success at the other sites is attributed to the particular physical conditions that existed.Further effort toward developing electrical resistivity as a method for evaluating variations in ground‐water quality is encoura

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1969.tb01262.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

AbstractA new method of determining aquifer storage coefficients has been developed for use in operations involving ground‐water recharge through wells. This work evolved from a research project dealing with the fate of DDT and nitrate in the Ogallala Aquifer in the High Plains of Texas.A tritium tracer was used to determine the detention time of the recharge water passing through a saturated volume of the aquifer. Tracer behavior was formulated ‘mathematically and verified by model simulation. The formulations provide a graphical solution for the detention time from which the storage coefficient may be calculated.The method will have immediate value in establishing storage coefficients of aquifers, such as the Ogallala, where plans for importation and distribution of supplemental water involve utilization of underground storage. Regarding water‐table conditions, this method promises to produce more reliable storage values than have been obtained from pumping

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1969.tb01263.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

AbstractThe build‐up of American military force in Vietnam has necessitated a massive well‐drilling program.Engineering investigations were carried on concurrently with drilling to evaluate various related water resources.Water quality problems including salt‐water encroachment existed in many areas.Between July 1966 and September 1967. 48 test holes and 233 successful 8 inch wells were drilled. The average producing well yielded 9

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1969.tb01264.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

AbstractA review of the literature and a study of a number of field tests shows that the presently used analysis and interpretation of step‐drawdown tests can be misleading. The efficiency of a well is defined. The usefulness of the step‐drawdown test is outlined and a hypothesis for reduction in specific capacity is offe

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1969.tb01265.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

AbstractThe use of this material will give an estimate of the well and pump costs for projects requiring a given capacity. This is intended only as an instrument for establishing orders of magnitude as a basis for comparisons, and of course does not substitute for detailed engineering studies.Well cost data were analyzed for three categories according to the aquifer tapped: sand and gravel, shallow bedrock, and deep sandstone. In the sand and gravel category, tubular and gravel packed wells finished in the glacial materials above bedrock were considered separately.

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1969.tb01266.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY

摘要:

AbstractUse of this material will assist in the determination of cost of pumping water, given the quantity of flow required, the total pumping head, the wire‐to‐water efficiency, and the unit cost of power.A table of conversions is presented to aid in reducing theoretical equations to simplified equations, and a figure is provided for graphical solutions of the equati

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1969.tb01267.x

出版商:Blackwell Publishing Ltd    

年代:1969

数据来源: WILEY