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  • 1
    Online Resource
    Online Resource
    Earth Systems Data Processing and Visualization Using MATLAB (2020)
    Cham :Springer International Publishing :
    Details
    Keywords: Physical geography. ; Software engineering. ; Environment. ; Software engineering Management. ; Sociology Methodology. ; Earth System Sciences. ; Software Engineering. ; Environmental Sciences. ; Software Management. ; Sociological Methods.
    Description / Table of Contents: Introduction -- Statistics fundamentals -- Spatial analyses -- Simulations -- Meteorology -- Hydrology -- Hydrogeology -- Hydrochemistry -- Climate change -- Water resources engineering -- Renewable energy. .
    Abstract: This book is designed to provide easy means of problem solving based on the science philosophical and logical rules that lead to effective and reliable software at the service of professional earth system scientists through numerical scientific computation techniques. Through careful examination of software illuminated by brief scientific explanations given in the book the reader may develop his/her skills of computer program writing. Science aspects that are concerned with earth systems need numerical computation procedures and algorithms of data collected from the field measurements or laboratory records. The same is also valid for data processing in social sciences and economics. Some of the data assessment and processing procedures are at the large scales and complex, and therefore, require effective and efficient computer programs. Data reduction and graphical display in addition to probabilistic and statistical calculations are among the general purposes of the book. Not only students’ works but also projects of researchers at universities and tasks of experts in different companies depend on reliable software. Especially, potential users of MATLAB in earth systems need a guidance book that covers a variety of practically applicable software solutions.
    Type of Medium: Online Resource
    Pages: XI, 277 p. , online resource.
    Edition: 1st ed. 2020.
    ISBN: 9783030015428
    Series Statement: Advances in Science, Technology & Innovation, IEREK Interdisciplinary Series for Sustainable Development,
    URL: https://doi.org/10.1007/978-3-030-01542-8
    DOI: 10.1007/978-3-030-01542-8
    DDC: 550
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Type Curves for Large-Diameter Wells Near Barriers (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 20 (1982), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: The author has used the concept of depression cone volume to derive type curve equations for large-diameter wells in aquifers of finite extent. Comparisons with the corresponding type curves in an infinitely extensive aquifer have been given. These solutions are based on joint exploitation of the ground-water movement equation (Darcy's law) and the continuity equation for large-diameter wells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1982.tb01347.x
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  • 3
    Electronic Resource
    Electronic Resource
    INCREASING WATER SUPPLY BY MIXING OF FRESH AND SALINE GROUND WATERS (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 39 (2003), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : The quality of ground water in any aquifer takes its final form due to natural mixture of waters, which may originate from different sources. Water quality varies from one aquifer to another and even within the same aquifer itself. Different ground water quality is obtained from wells and is mixed in a common reservoir prior to any consumption. This artificial mixing enables an increase in available ground water of a desired quality for agricultural or residential purposes. The question remains as to what proportions of water from different wells should be mixed together to achieve a desired water quality for this artificial mixture. Two sets of laboratory experiments were carried out, namely, the addition of saline water to a fixed volume of fresh water. After each addition, the mixture volume and the electric conductivity value of the artificially mixed water were recorded. The experiments were carried out under the same laboratory temperature of 20°C. A standard curve was developed first experimentally and then confirmed theoretically. This curve is useful in determining either the volume or discharge ratio from two wells to achieve a predetermined electrical conductivity value of the artificial mixture. The application of the curve is given for two wells within the Quaternary deposits in the western part of the Kingdom of Saudi Arabia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.2003.tb03703.x
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  • 4
    Electronic Resource
    Electronic Resource
    Determination of Hydraulic Conductivity from Complete Grain-Size Distribution Curves (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 31 (1993), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Current methods of relating hydraulic conductivity to grain-size distribution rely on a single so-called representative grain-size distribution parameter such as the effective diameter, geometric mean, median, standard deviation, etc. An alternative procedure is proposed which relates the hydraulic conductivity to the initial slope and intercept of the grain-size distribution curve. The proposed methodology is documented with data from Australia and Saudi Arabia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1993.tb00587.x
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  • 5
    Electronic Resource
    Electronic Resource
    Straight-Line Intercept Method in Aquifer Volume Calculations (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 30 (1992), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Volume calculations in various aspects of ground-water resources evaluation play a significant role. However, these calculations are made by different classical techniques, each of which employs the finite element concept. A common requirement in these techniques is the adaptation of a basic height—like contour interval. The accuracy of the estimated volume is influenced by the subjectivity on the part of the person doing the contouring on a specified contour interval. It is observed that there is a linear relationship between the contour interval and the estimated volume. The basic idea of this paper is to use a simple drawing procedure of a few points of different contour intervals versus the resulting volumes. A regression line is fitted through the scatter of these points. The best volume estimate corresponds to zero contour interval, i.e., the intercept of the straight line with the volume axis. This technique provides a common basis in that different researchers arrive at exactly the same conclusion for a given data set. The proposed method is verified by calculating the reservoir volume of a laboratory dam model with the known reservoir volume. It was found that the estimated volume was off by only 5% of the measured one. Further applications of the method are given for some observed data from the Floridan aquifer and a Black Hills dam reservoir.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1992.tb01533.x
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  • 6
    Electronic Resource
    Electronic Resource
    Unsteady Ground-Water Flow Toward Extended Wells (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 30 (1992), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Ground-water flow in naturally fractured rocks of low permeability terrain presents special problems which cannot be solved by classical radial flow techniques. Existence of fractures in these rocks increases the conductivity of the media, but the storativity does not increase significantly. Especially, a dominant vertical fracture in hydraulic connection with a well provides an extended surface for ground water to enter the well. Such a well and fracture combination is referred to as an “extended well.” The analytical approach to the ground-water flow problem of extended wells cannot be achieved through merely radial or linear flow alone if the vertical fracture is of finite length. In fact, in practice, the fracture lengths are almost always of finite length, and the flow pattern is a mixture of radial and linear flows. This paper presents a simplified conceptual model for the ground-water flow pattern around an extended well leading to an analytical solution with type curves which can be used in determining the aquifer parameters from the field measurements of time-drawdown data. It is observed that for large times, extended well type curves merge with the Theis curve, and consequently the Jacob straight-line method becomes applicable. In addition, as the vertical fracture length becomes smaller, the resulting type curve approaches the Theis type curve. The methodology has been applied for ground-water flow in a folded and fractured limestone formation in the Conasauga Group of East Tennessee.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1992.tb00812.x
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  • 7
    Electronic Resource
    Electronic Resource
    Dimensionless Time-Drawdown Plots of Late Aquifer Test Data (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 26 (1988), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: The Jacob straight-line method is concerned with the late time Theis type curve. The Jacob method gives a straight line on semilogarithmic paper. In practice, the Jacob straight line is taken for granted by ground-water hydrologists, hydrogeologists, and engineers, and applied almost universally. Not every straight line on semilogarithmic paper, however, warrants the application of the Jacob method. The Jacob straight-line method has physical restrictions (in addition to the mathematical requirements of having the dimensionless time factor, u, less than 0.01) which are ignored. Therefore, determination of the storage coefficient and transmissivity from the semilogarithmic plot of data yields either over or underestimations.The objective of this paper is to show that the slope of the straight line on semilogarithmic paper can provide useful quantitative information for the proper application of the Jacob method. Differences in the slopes of the theoretical and field lines implies various physical circumstances. In practice, the Jacob method must be used with great care. The physical construction of the aquifer and flow conditions must be considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1988.tb00795.x
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  • 8
    Electronic Resource
    Electronic Resource
    Determination of Aquifer Parameters by the Slope-Matching Method (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 24 (1986), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: A method has been developed by which the slope between any two successive data points on a time-drawdown plot can be used for determining aquifer parameters in nonleaky and leaky aquifers. The method yields values of transmissivity and storage coefficient which are in good agreement with the results of the classically known techniques. The method of slope analysis offers several advantages in its use. These advantages include the following: Changes in values for the aquifer parameters that might occur during a pumping test can be identified. Confidence limits can be calculated for average values of aquifer parameters. The method yields meaningful aquifer parameter estimates even for short duration pumping tests. Subjective interpretation of the data is minimized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1986.tb00997.x
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  • 9
    Electronic Resource
    Electronic Resource
    Aquifer Test Analysis in Fractured Rocks with Linear Flow Pattern (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 24 (1986), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: A major vertical fracture in a permeable rock mass may act as an extended well and can provide water through pumping cither directly from the fracture itself or if the fracture width is not enough to install pumps, from an abstraction well drilled in the fracture. In such a case the ground-water flow is not radial but linear toward the fracture and the flow lines are perpendicular to the fracture axis.A mathematical description of ground-water flow toward vertical fractures is presented. The cases considered are: (1) an infinitesimally small fracture width corresponding to a planar source or sink, and (2) a finite width fracture in which the effects of ground-water storage in the fracture are taken into account. The necessary type curves are presented for the main and observation wells. It is observed that the type curve in the linear flow pattern case is extremely different from the radial flow solution especially for long times. In addition, recovery type curves are also given. The application of the method is presented for some available data in the literature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1986.tb01461.x
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  • 10
    Electronic Resource
    Electronic Resource
    Hydrochemical Facies Evaluation in Umm Er Radhuma Limestone, Eastern Saudi Arabia (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 24 (1986), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Evaluation of the local hydrochemical facies in the Umm Er Radhuma (UER) limestone aquifer in the eastern part of Saudi Arabia and the presentation of supplemental methods for the classical techniques in such an evaluation are presented. Equilibrium studies of ground-water chemistry of the UER aquifer indicate that most waters arc of calcium sulfate or sodium chloride types. The ground water is saturated with respect to calcite but unsaturated for anhydrite in the northern part of the study area.Charts are developed to find, practically, the ionic activity of any major ion provided that TDS values are estimated. A detailed relationship is provided for estimating TDS values from field measurements of the electrical conductivity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1986.tb03711.x
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