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« gr walker »

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  • Using Soil Water Tracers to Estimate Recharge - Part 7

    par GR Walker ...
    Collections Livre 7 - Basics of Recharge and Discharge Series
    This booklet covers the soil tracer techniques that have been shown to be useful for Australian situations. These important tracer techniques include those involving surface-applied tracers, historically-applied tracers and environmental soil tracers. ... En savoir plus

    $54.99 CAD

  • Plot Scale Models and Their Application to Recharge Studies - Part 10

    par GR Walker, L Zhang ...
    Collections Livre 10 - Basics of Recharge and Discharge Series
    Each booklet in The Basics of Recharge and Discharge series covers a specific technique for detecting, measuring or modelling groundwater recharge and discharge. Part 10 provides an overview of the use of plot scale models in estimating deep drainage. This booklet explains how such models can add understanding to deep drainage studies. It describes the different broad types of plot-scale models ... En savoir plus

    $54.99 CAD

  • Surface Water Balance for Recharge Estimation - Part 9

    par L Zhang, GR Walker, M Fleming ...
    Collections Livre 9 - Basics of Recharge and Discharge Series
    This addition to The Basics of Recharge and Discharge series deals with the surface water balance approaches that form the traditional basis of hydrological investigations. It explores both field methods and modelling methods for measuring or estimating the different parts of the water balance, including rainfall, evaporation, run-off and soil water storage. The authors discuss the concepts ... En savoir plus

    $54.99 CAD

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  • Using Groundwater Responses to Infer Recharge - Part 5

    par D Armstrong, K Narayan ...
    Collections Livre 5 - Basics of Recharge and Discharge Series
    Analytical methods of assessing the response of groundwater levels to a range of factors, including elastic (barometric and tidal) influences in confined aquifers and recharge to unconfined aquifers due to infiltration of rain and other surface water, are presented. Responses in a confined aquifer to distant recharge events and the associated time lag is discussed. Also covered are responses to ... En savoir plus

    $54.99 CAD

  • Groundwater Processes and Modelling - Part 6

    par D Armstrong, K Narayan ...
    Collections Livre 6 - Basics of Recharge and Discharge Series
    This booklet outlines the properties of geological materials which enable them to accept, store and transmit groundwater, together with a description of the principal types of aquifer which are commonly found to occur in the field. Sources of groundwater are described in order to provide an understanding of the hydrogeological modelling exercise. The governing equations for steady state and non ... En savoir plus

    $54.99 CAD

  • Groundwater Chemical Methods for Recharge Studies - Part 2

    par PG Cook, AL Herczeg ...
    Collections Livre 2 - Basics of Recharge and Discharge Series
    These notes are restricted to those geochemical methods which have been used to quantify rates of groundwater recharge. There have been two main approaches. The first involves the use of mass balances and mixing cell models, mainly using conservative (non-reacting) dissolved species. The methods range in complexity from simple back-of-the-envelope calculations (zero-dimensional chloride mass ... En savoir plus

    $54.99 CAD

  • Electromagnetic Induction Techniques - Part 8

    par PG Cook, BG Williams ...
    Collections Livre 8 - Basics of Recharge and Discharge Series
    Electromagnetic induction (EM) techniques are used in recharge/discharge studies by providing measurements of the apparent electrical conductivity of soil profiles. This booklet provides a summary of EM techniques that are most widely used. A number of case studies are presented which demonstrate the applications of the techniques to field problems. ... En savoir plus

    $54.99 CAD

  • Catchment Scale Recharge Modelling - Part 4

    par TJ Hatton ...
    Collections Livre 4 - Basics of Recharge and Discharge Series
    This paper addresses the need to model recharge to groundwater systems at the scale of whole catchments. It looks at developing the right conceptual model of how water moves through a given landscape for both homogeneous and heterogeneous catchments. One-dimensional recharge models and three-dimensional recharge models are considered. Discussion of which recharge modelling approach to use take in ... En savoir plus

    $54.99 CAD

  • Physical and Chemical Techniques for Discharge Studies - Part 1

    Modifié par RB Salama ...
    Collections Livre 1 - Basics of Recharge and Discharge Series
    Groundwater discharge is associated with salinity and pollution problems. The widespread presence of millions of saline lakes in North America, Africa and Australia, shows that across the geological record, most salinity and desertification problems have been caused by saline groundwater discharge. In recent times, dryland salinity has spread widely in southern Australia, resulting in the loss of ... En savoir plus

    $54.99 CAD

  • Soil Physical Methods for Estimating Recharge - Part 3

    par W Bond ...
    Collections Livre 3 - Basics of Recharge and Discharge Series
    Measurements in and just below the plant root zone, using principles of soil physics, can be used to estimate recharge. This booklet describes the Zero Flux Plane Method, Methods Based on Darchy's law, and Lysimetry for making such estimates. The work presents the basic concepts of soil water physics that will be referred to in this and other booklets in the series. Another method, the Soil Water ... En savoir plus

    $43.99 CAD

  • Growing Crops with Reclaimed Wastewater

    Modifié par Daryl Stevens ...
    This comprehensive work examines the fundamentals required for reclaimed water schemes to deliver sustainable farming operations that achieve the yield and quality of produce necessary for acceptance in the market. Growing Crops with Reclaimed Wastewater reviews the historical background of water treatment, its use and disposal from Australian wastewater treatment facilities and the technologies ... En savoir plus

    $126.99 CAD

  • Ecology and Classification of North American Freshwater Invertebrates

    Modifié par Alan P. Covich, James H. Thorp ...
    The Third Edition of Ecology and Classification of North American Freshwater Invertebrates continues the tradition of in-depth coverage of the biology, ecology, phylogeny, and identification of freshwater invertebrates from the USA and Canada. This edition is in color for the first time and includes greatly expanded classification of many phyla. - Contains extensive and detailed classification ... En savoir plus

    $132.99 CAD