Download or read book Soil Water Assessment by the Neutron Method written by CSIRO (Australia) and published by CSIRO Publishing. This book was released on 1981 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Application in agriculture, Forestry and Environmental Science. Neutron moisture meter theory. Instrument design. Accuracy, bias and precision. Calibration. Field installation and maintenance. Site selection and representivity. Field practice, data acquisition and processing. Safety aspects.
Download or read book Review of Techniques for Measuring Soil Moisture In Situ written by Harlan L. McKim and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently there has been an increased interest in the in-situ measurement of soil moisture content in the areas of hydrology, meteorology, agriculture and environmental studies. Current methods generally have limitations, depending upon the use of the data, that greatly influence acquisition and reliability of the soil moisture determination. This report discusses gravimetric, nuclear, electromagnetic, tensiometric and hygroscopic techniques and the advantages and disadvantages of using the technique. Emphasis is placed on the tensiometric and electromagnetic techniques. These two measurements when coupled together would supply information on the wetting and drying soil moisture characteristic curves and thereby provide a means of tracing moisture movement under field conditions in cold climates. (Author).
Download or read book The Measurement of Soil Moisture in Situ written by Peter Forsyth Butler and published by . This book was released on 1950 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluates the Bouyoucos electrical resistance method of measuring soil moisture in situ; and studies the soil moisture under a simple crop rotation. Has been the subject of 2 papers entiled: Techniques associated with the use of gypsum block soil moisture meters / Aitchinson, Butler and Gurr; and, Gypsum block moisture meters as instruments for the measurement of tension in soil water / Aitchinson and Butler. The papers are attached. Part A includes a brief summary and discussion of these papers.
Download or read book Probe for in situ soil moisture measurement written by P. E. Wakeman and published by . This book was released on 1978 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In Situ Measurement and Remote Sensing of Soil Moisture Using Time Domain Reflectometry Thermal Infrared and Active Microwaves written by Michael P. Wüthrich Treubig and published by . This book was released on 1996 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Water Measurement written by J. David Cooper and published by John Wiley & Sons. This book was released on 2016-01-19 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written for all those involved in measurement of soil water phenomena, whether they be environmental scientists, field technicians, agronomists, meteorologists, hydrogeologists, foresters, physical geographers, civil or water engineers or students in these subjects. It contains a comprehensive description of all the major methods used for measurement of soil water content and potential, solute concentration, transport and balance of water and solutes, including recharge to groundwater aquifers. The emphasis is firmly on techniques which can be applied in the field or on samples obtained from the field. The theory and practice of the workings of the main instruments and methods available is described, along with practical tips on surmounting some of the main difficulties and explanations of many commonly encountered jargon words.
Download or read book Methods of Measuring Soil Moisture in the Field written by Arnold Ivan Johnson and published by . This book was released on 1962 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluates methods for measuring soil moisture and describes the equipment used.
Download or read book Remote Sensing of Energy Fluxes and Soil Moisture Content written by George Petropoulos and published by CRC Press. This book was released on 2013-10-28 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrating decades of research conducted by leading scientists in the field, Remote Sensing of Energy Fluxes and Soil Moisture Content provides an overview of state-of-the-art methods and modeling techniques employed for deriving spatio-temporal estimates of energy fluxes and soil surface moisture from remote sensing. It also underscores the range
Download or read book Review of Techniques for Measuring Soil Moisture in Situ written by Harlan L. McKim and published by . This book was released on 1980 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently there has been an increased interest in the in-situ measurement of soil moisture content in the areas of hydrology, meteorology, agriculture and environmental studies. Current methods generally have limitations, depending upon the use of the data, that greatly influence acquisition and reliability of the soil moisture determination. This report discusses gravimetric, nuclear, electromagnetic, tensiometric and hygroscopic techniques and the advantages and disadvantages of using the technique. Emphasis is placed on the tensiometric and electromagnetic techniques. These two measurements when coupled together would supply information on the wetting and drying soil moisture characteristic curves and thereby provide a means of tracing moisture movement under field conditions in cold climates. (Author).
Download or read book Field Tests of Nuclear Instruments for the Measurement of Soil Moisture and Density written by United States. Forest Service. Vicksburg Infiltration Project and published by . This book was released on 1955 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrical methods for in situ measurements of soil moisture content written by Fabrizio Benincasa and published by . This book was released on 2001 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil moisture Measurement written by Howard William Lull and published by . This book was released on 1955 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In Situ Methods of Measuring Soil Moisture Content written by Bernard Albert Eastwell and published by . This book was released on 1953 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Introduction to Environmental Biophysics written by Gaylon S. Campbell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: From reviews of the first edition: "well organized . . . Recommended as an introductory text for undergraduates" -- AAAS Science Books and Films "well written and illustrated" -- Bulletin of the American Meteorological Society
Download or read book A note on plaster of paris blocks for in situ soil moisture measurement written by and published by . This book was released on 1966 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Establishment of Reliable Methodologies to Determine In situ Moisture Content of Base and Subgrade Soils written by Richard Liu and published by . This book was released on 1999 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pavement life span is often affected by the amount of voids in the base and subgrade soils, and especially by the soil moisture content. Time Domain Reflectometry (TDR) and Ground Penetrating Radar (GPR) are two desirable techniques to indirectly measure the in-situ soil moisture content through electrical properties of soils. The pre-purchased Tektronix 1502B TDR Cable Tester equipped with Campbell Scientific SDM1502 Communications Interface and PS 1502B Power Control Module system was successfully modified, installed, and integrated into the existing weather station in conjunction with the Texas Mobile Load Simulator (TxMLS) research project. The test sections were located on US281 near Jacksboro, Texas. The TDR results from US281 test sites indicated that the TDR sensors responded to the rainfall events favorably. The two-year field test results indicated that the TDR readings interpreted by Topp's (1980) and Ledieu's (1986) equations agreed well with the real measured value for the subgrade; none of the existing models for the base layers was found to be suitable for the soil moisture content conversion used in this research study. An empirical equation was established to determine the weight-based moisture content of the compacted base materials. Although the TDR system provides valuable information, it requires considerable time and effort to process data. In addition, the TDR system consumed too much power and caused malfunctions of the weather station. In that regard, a new Moisture Sensor (MS) system was developed in this study and verified at the Materials and Tests (MAT) section of Texas Department of Transportation. The results from MAT section indicated that the MS system provides a more reliable solution than that of the TDR system. In addition, it is much easier to process the MS data. Furthermore, the MS system consumes almost no battery power and is an ideal solution for a long-term monitoring of pavement moisture content. GPR was also employed at the same test sites. The Inversion Method was applied for converting moisture content of soils. Laboratory tests were satisfactory; yet the field application of this study needs further experiments to improve the results.
Download or read book Improved irrigation scheduling based on soil moisture measurement in situ written by Thomas Sitras and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
