ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1972.tb02907.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY

摘要:

ABSTRACTCorrosion and incrustation of water wells is defined and classified into groups which fit most field problems. Case histories with concomitant water analyses are described. A readily determined index for the magnitude of corrosion is presented along with recommended materials to correspond with the indices. The theory for the most common well incrustants is presented. Recommendations are made for minimizing the rate of incrustation in wells supplying water known to be incrusting and thus eventually clogging well screens. Treatments for incrusted wells are described including iron bacteria. A ten‐year case history of iron bacteria fouling is presented. Nonmetallics are discussed.Descriptors: Well failures, corrosion of well components, incrustation of screens, water analyses, index, guide lines, nonmetallics, iron bacteria.Identifiers: Corrosion and incrustation problems in well

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1972.tb02908.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY

摘要:

ABSTRACTChemical analyses of natural water may be inadequate because of inadvertent human errors and sample aging. Characteristic deficiencies can be demonstrated by multiple chemical analyses of the same sample by different laboratories, multiple analyses of the same sample by one laboratory, repeated analyses of one sample as a function of time, and a simple laboratory experiment in rock‐water chemistry. Whenever possible, complete chemical analyses should be made. The most reliable analyses are those in which combining weights of the cation equal the combining weight of the anion and in which the sum of the individually measured constituents equals the observed residue on evaporation at 180°C (total dissolved solid

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1972.tb02909.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY

摘要:

AbstractStandard resistivity configurations lose resolution in regions where multiple geologic layering of high conductivity contrast occurs. To partially circumvent this problem an electrode configuration was used, which includes a current electrode at depth down a drill hole in a water field, to examine the possibility of delineating ground‐water flow channels. Results show the value of this technique in enhancing the electrical anomaly and hence determining structure. It was found that the ground water in this area flows primarily in fracture traces in the dolomite. Moreover, it was determined from well log synthesis that these fracture traces increase the effective porosity in the flow region by approximately ten percen

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1972.tb02910.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY

摘要:

ABSTRACTAppropriate nonparametric or distribution free statistical techniques are useful tools when data do not satisfy the conditions required by parametric statistical tests, and may be applied to a variety of hydrogeological problems. Two nonparametric tests, Krusk‐Wallis One‐Way Analysis of Variance and Mann‐Whitney U Test, were used to test the significance of observed differences in well yields with respect to variation in controlling hydrogeologic factors. This paper presents the steps involved in performing these two tests with one example for each and suggests other applications to water‐related problems. To avoid computational errors and save time, a computer program was written for calculating the statistics used in thes

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1972.tb02911.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY

摘要:

ABSTRACTQuality of water is determined by chemical analyses, the data from which are used for various purposes, such as classification, analysis, correlation, etc. For these purposes, the data need to be compiled and statistically evaluated. Graphical and numerical interpretation, a basic tool in hydrochemical studies, is one of the means used for summarizing and presenting water‐quality data. There exist a considerable number of methods and procedures which can be applied. They are relatively simple and can be used without extensive knowledge of chemistry. Main techniques and methods are grouped, for the purpose of discussion, into four categories as to their possible use: classification methods, correlation methods, analytic methods, and synthetic and illustrative methods. The basic graphs and diagrams in each category are accompanied by example

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1972.tb02912.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1972.tb02913.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY

摘要:

ABSTRACTA survey of State water agency and university personnel was conducted to identify and classify interstate and international aquifer problems in the conterminous United States. Questionnaires returned identified nearly 200 of such situations. Of these, 30 situations were classified as being a major problem at the present time. An additional 73 situations were classified as minor at the present time. For those problems that were indicated as being expected to develop within the next five years, 9 were classified as major and 25 as minor. For those problems that were indicated as being expected to develop after five or more years, 19 were classified as major and 42 as minor.

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1972.tb02914.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1972.tb02916.x

出版商:Blackwell Publishing Ltd    

年代:1972

数据来源: WILEY