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A Transient Method For Estimating The Hydraulic Properties Of Dry Unsaturated Soil Cores
Download A Transient Method For Estimating The Hydraulic Properties Of Dry Unsaturated Soil Cores full books in PDF, epub, and Kindle. Read online A Transient Method For Estimating The Hydraulic Properties Of Dry Unsaturated Soil Cores ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis A Transient Method for Estimating the Hydraulic Properties of Dry Unsaturated Soil Cores by : David B. Hudson
Download or read book A Transient Method for Estimating the Hydraulic Properties of Dry Unsaturated Soil Cores written by David B. Hudson and published by . This book was released on 1992 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Unsaturated Soil Hydraulic Properties from Transient Laboratory and Field Experiments by : Simon Oyaro Eching
Download or read book Estimation of Unsaturated Soil Hydraulic Properties from Transient Laboratory and Field Experiments written by Simon Oyaro Eching and published by . This book was released on 1993 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Indirect Methods for Estimating the Hydraulic Properties of Unsaturated Soils by : M. Th Van Genuchten
Download or read book Indirect Methods for Estimating the Hydraulic Properties of Unsaturated Soils written by M. Th Van Genuchten and published by . This book was released on 1992 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Hydrology by : V.P. Singh
Download or read book Environmental Hydrology written by V.P. Singh and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Hydrology presents a unified approach to the role of hydrology in environmental planning and management, emphasizing the consideration of the hydrological continuum in determining the fate and migration of chemicals as well as micro-organisms in the environment, both below the ground as well as on it. The eco-hydrological consequences of environmental management are also discussed, and an up-to-date account of the mathematical modeling of pollution is also presented. Audience: Invaluable reading for senior undergraduates and beginning graduates, civil, environmental, and agricultural engineers, and geologists and climatologists.
Book Synopsis Handbook of Vadose Zone Characterization & Monitoring by : L. Gray Wilson
Download or read book Handbook of Vadose Zone Characterization & Monitoring written by L. Gray Wilson and published by CRC Press. This book was released on 2018-05-02 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written in a simple, straightforward manner without complicated mathematical derivatives. Compiled by experienced practitioners, this guide covers topics such as basic principles of vadose zone hydrology and prevalent monitoring techniques. Case studies present actual field experiences for the benefit of the reader. The Handbook provides practitioners with the information they need to fully understand the principles, advantages, and limitations of the monitoring techniques that are available. The Handbook of Vadose Zone Characterization & Monitoring expands and consolidates the useful and succint information contained in various ASTM documents, EPA manuals, and other similar texts on the subject, making it an invaluable aid to new practioners and a useful reference for seasoned veterans in the field.
Book Synopsis Unsaturated Soils by : Gerald A. Miller
Download or read book Unsaturated Soils written by Gerald A. Miller and published by . This book was released on 2006 with total page 1328 pages. Available in PDF, EPUB and Kindle. Book excerpt: GSP 147 contains 219 papers on unsaturated soil problems presented at the Fourth International Conference on Unsaturated Soils, held in Carefree, Arizona, April 2-6, 2006.
Book Synopsis Evaluation of Transient Flow Measurements on Intact Cores as a Means of Approximating the Hydraulic Conductivity of Unsaturated Soil Under Field Conditions by : Michael Henry Roulier
Download or read book Evaluation of Transient Flow Measurements on Intact Cores as a Means of Approximating the Hydraulic Conductivity of Unsaturated Soil Under Field Conditions written by Michael Henry Roulier and published by . This book was released on 1972 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Transient Method for Measuring Soil Water Diffusivity and Unsaturated Hydraulic Conductivity by : D. R. Scotter
Download or read book A Transient Method for Measuring Soil Water Diffusivity and Unsaturated Hydraulic Conductivity written by D. R. Scotter and published by . This book was released on 1983 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1999 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unsaturated Soil Hydraulic Parameter Studies by :
Download or read book Unsaturated Soil Hydraulic Parameter Studies written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Different field and laboratory methods for determining the hydraulic properties of unsaturated soils were studied. Drying moisture retention curves were measured on undisturbed soil samples with a pressure plate apparatus, and wetting soil moisture retention curves were measured on repacked soil columns via a capillary rise experiment Saturated hydraulic conductivities were measured in-situ with a Guelph permeameter, and in the laboratory with falling head tests. Finally, an inverse modeling technique was used to analyze transient flow data from in-situ cone permeameter and laboratory multi-step outflow experiments to simultaneously obtain wetting and drying curves for both the moisture retention and the hydraulic conductivity functions. The retention curves obtained from analysis of the cone permeameter data were consistent with results of the multi-step outflow tests and bounded by the capillary and pressure plate test results, as expected. The retention curves derived from cone permeameter data exhibited more curvature than those obtained from the other methods. The curves obtained from multi-step outflow tests exhibited less hysteresis than those derived from cone permeameter tests and were more repeatable than the pressure plate test results.
Book Synopsis Advances in Unsaturated Soils by : Bernardo Caicedo
Download or read book Advances in Unsaturated Soils written by Bernardo Caicedo and published by CRC Press. This book was released on 2013-02-01 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: New theories and testing techniques related with Unsaturated Soil Mechanics have proven to be valuable tools to study a broad spectrum of geo-materials which includes rocks, rock fills, frozen soils and domiciliary solid wastes. These new theories and testing techniques have permitted the analysis of several traditional problems from a new perspective (e.g., swelling or collapsible soils and compacted soils or pavements materials), and they have also shown their efficiency to study new energy-related problems like CO2 sequestration and nuclear waste disposal. Advances in Unsaturated Soils is a collection of papers from the 1st Pan-American Conference on Unsaturated Soils organized in Cartagena de Indias, Colombia, in February 2013. The volume includes 76 research papers coming for all over the world, as well as 7 keynotes papers by well known international researchers. The contributions present a variety of topics including: • Advances in testing techniques • Unsaturated soil behavior • Constitutive modeling and microstructure • Numerical modeling • Geotechnical problems Advances in Unsaturated Soils is expected to become a useful reference to academics and professionals involved in Unsaturated Soil Mechanics.
Book Synopsis Undisturbed Core Method for Determining and Evaluating the Hydraulic Conductivity of Unsaturated Sediments by : Atef Elzeftawy
Download or read book Undisturbed Core Method for Determining and Evaluating the Hydraulic Conductivity of Unsaturated Sediments written by Atef Elzeftawy and published by . This book was released on 1983 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Regression Method for Estimating the Saturated Hydraulic Conductivity of Unsaturated Soil from Cone Permeameter Data by : Zain Mohammad Al-Houri
Download or read book A Regression Method for Estimating the Saturated Hydraulic Conductivity of Unsaturated Soil from Cone Permeameter Data written by Zain Mohammad Al-Houri and published by . This book was released on 1999 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1992 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The UNSODA Unsaturated Soil Hydraulic Database by :
Download or read book The UNSODA Unsaturated Soil Hydraulic Database written by and published by . This book was released on 1996 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Analytical Method for the Simultaneous Determination of Soil Hydraulic Properties from Multistep Outflow Data by : Rayan Ribal Bsat
Download or read book An Analytical Method for the Simultaneous Determination of Soil Hydraulic Properties from Multistep Outflow Data written by Rayan Ribal Bsat and published by . This book was released on 2006 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water transport in the vadose zone greatly depends on the hydraulic properties o f soils. The direct determination of those properties in the field or laboratory is tedious, time-consuming, and involves considerable uncertainty for most prac tical applications. Recently, inverse modeling has been introduced to estimate s oil hydraulic properties, using transient flow information of measured time seri es. Inverse methods combine forward soil water flow models with optimization alg orithms to find the best parameter set that minimizes an objective function. Ass uming a linear hydraulic conductivity - moisture content k(theta) relationship a nd an exponential hydraulic conductivity - water pressure k(h) model, the parame ter identification problem is solved with reasonable accuracy and simplicity, th rough the analysis of multistep outflow data. Unsaturated hydraulic properties o f a hypothetical soil are first evaluated by a nonlinear inversion method minimi zing various objective functions, to identify the information content of data re quired for the proper determination of soil hydraulic parameters. Multistep expe riments are then simulated on three soils with different texture characteristics via Hydrus-1D software, to explore the applicability and limitations of applyin g the proposed parameter estimation technique to various soil types. Finally, tr ansient flow data from an actual multistep experiment with inherent measurement errors is used, whereby the proposed optimization method is used along with the Hydrus-1D numerical code to inversely estimate the unsaturated soil hydraulic pr operties. The proposed method does not require a numerical solution of the flow problem, and when tested against numerical and experimental outflow data gives v ery satisfactory results.
Book Synopsis Soil Hydraulic Properties by : Nabil Ibrahim Mina
Download or read book Soil Hydraulic Properties written by Nabil Ibrahim Mina and published by . This book was released on 1994 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unsaturated flow through porous media has gained a lot of attention in recent decades in many fields of agriculture and hydrology. Examples are many, of which are deficit irrigation and contaminants transport. Several models simulating unsaturated flow processes require as input the diffusivity -water content relation (D-0) and/or the hydraulic conductivity-water content relation (K-0). Several techniques for measuring or predicting these relations were developed throughout the literature. Most of these techniques involve either analytical and quasi-analytical solutions of the governing non-linear partial differential equation, or laboratory experiments, which are both expensive and time consuming. In this research, an experimental model was developed based on the field capacity concept and requires only measurements of the wetting depth with time. The laboratory setup is simple and inexpensive, consisting of uniformly packed soil columns. Three replicates of three different soil textures were used. Water was added to the columns and measurements of the wetting depths were taken after infiltration has virtually ceased; these measurements were then used to get the D-0 relation. With the aid of the soil moisture characteristic curves developed by the pressure plate method, the K-0 relation was determined. Results produced by this model showed trends that were in good agreement with some empirical relations in the literature, especially for fine textured soils. The best fitted relations for clay and sandy clay loam soils were of the power function and the exponential function types. For coarse textured soils (sand) the data were scattered and the developed model was not valid, - this was due to neglecting the gravity term in the model. The values of the fitted experimental parameters were too high as compared with those in the literature.
