Download or read book Monitoring Variability in Soil Thermal Properties and Moisture Content Over Different Spatial Scales Using Distributed Temperature Sensing written by Mahmoud Mohamed Abdelmonem Ebrahim Mosa Shehata and published by . This book was released on 2021 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Using Fiber optic Distributed Temperature Sensing to Assess Soil Temperature Bulk Soil Thermal Properties and Soil Moisture Within the Shallow Subsurface written by Lucas Matthew Williamson and published by . This book was released on 2012 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: There currently exists a gap in the field scale measurement of many soil properties. Particularly, efficient measurement of soil moisture over the field scale at depths below the top few centimeters of the soil column has proven elusive. Distributed temperature sensing (DTS) allows for the nearly continuous measurement of temperature over both a spatial and temporal scale by use of standard fiber optic cables. Measurement of temperature progression throughout a soil column can lead to estimates of bulk soil thermal properties. Theoretically, these estimated thermal properties used in conjunction with determined soil characteristics can then provide soil moisture estimates. At an experimental field site in Smith Valley, three fiber optic cables were installed into the shallow subsurface in a vertical profile at depths of 5, 10, and 15 centimeters. Cables were placed within plots of various crop types and varying irrigation schedules. The effect of both surface crop type and irrigation on subsurface soil temperature is analyzed and presented. Through inversion of the conduction equation, spatial and temporal results of thermal diffusivity across the field are assessed. Thermal response of the soil changes in accordance with wetting due to irrigation, as well as subsequent drying up of the soil.In terms of soil moisture, it continues to be difficult to accurately provide quantitative estimates, although drier soils provide much better estimates than do wet soils. Soil moisture estimates were in general agreement with observed values, but prior knowledge of the general wetness of the soil is necessary to improve the estimate. In a non-irrigated plot of tef ( eragrostis tef ), observed volumetric moisture values from the top 5 centimeters of soil ranged from 0.02 m3 /m3 to 0.18 m3 /m3 , while the estimated soil moisture contents integrated over a depth of 5 to 15 centimeters stayed fairly consistent around 0.12 m3 /m3 throughout the 25-day period. The effects of irrigation and cloudy conditions were clearly discernible, as were the relative differences between those plots receiving significant irrigation and those that remained drier throughout the study. The use of DTS in such an application can provide highly detailed pictures of temporally changing soil temperature, but progression to soil moisture estimation still remains challenging due to the non-uniqueness of the relation between soil thermal diffusivity and soil moisture content.
Download or read book Remote Sensing of Energy Fluxes and Soil Moisture Content written by George P. Petropoulos and published by CRC Press. This book was released on 2013-10-28 with total page 564 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 of such techniques available nowadays as well as the operationally distributed networks that provide today in-situ validated relevant observations. The book brings together three types of articles: Comprehensive reviews that examine the developments in concepts, methods, and techniques employed in deriving land surface heat fluxes as well as soil surface moisture on field, regional, and large scales, paying particular emphasis to the techniques exploiting Earth Observation (EO) technology Detailed insights into the principles and operation of the most widely applied approaches for the quantification and analysis of surface fluxes and soil moisture with case studies that directly show the great applicability of remote sensing in this field, or articles discussing specific issues in the retrievals of those parameters from space Focused articles integrating current knowledge and scientific understanding in the remote sensing of energy fluxes and soil moisture, that are highlighting the main issues, challenges, and future prospects of this emerging technology. Designed with different users in mind, the book is organized in four more or less independent units that make specific information easy to find. It presents a discussion on the future trends and prospects, underlying the scientific challenges that need to be addressed adequately in order to derive more accurate estimates of those parameters from space.
Download or read book Water Scarcity and Sustainable Agriculture in Semiarid Environment written by Ivan Francisco Garcia Tejero and published by Academic Press. This book was released on 2018-01-03 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water Scarcity and Sustainable Agriculture in Semiarid Environment: Tools, Strategies and Challenges for Woody Crops explores the complex relationship between water scarcity and climate change, agricultural water-use efficiency, crop-water stress management and modeling water scarcity in woody crops. Understanding these cause- and effect relationships and identifying the most appropriate responses are critical for sustainable crop production. The book focuses on Mediterranean environments to explain how to determine the most appropriate strategy and implement an effective plan; however, core concepts are translational to other regions. Informative for those working in agricultural water management, irrigation and drainage, crop physiology and sustainable agriculture. - Focuses on semi-arid crops including olive, vine, citrus, almonds, peach, nectarine, plum, subtropical fruits and others - Explores crop physiological responses to drought at plant, cellular and/or molecular levels - Presents tool options for assessing crop-water status and irrigation scheduling
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Soil Sciences Two Volume Set written by Pan Ming Huang and published by CRC Press. This book was released on 2018-10-03 with total page 2249 pages. Available in PDF, EPUB and Kindle. Book excerpt: An evolving, living organic/inorganic covering, soil is in dynamic equilibrium with the atmosphere above, the biosphere within, and the geology below. It acts as an anchor for roots, a purveyor of water and nutrients, a residence for a vast community of microorganisms and animals, a sanitizer of the environment, and a source of raw materials for co
Download or read book NASA Reference Publication written by and published by . This book was released on 1986 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methods of Soil Analysis Part 4 written by Jacob H. Dane and published by John Wiley & Sons. This book was released on 2020-05-27 with total page 1744 pages. Available in PDF, EPUB and Kindle. Book excerpt: The best single reference for both the theory and practice of soil physical measurements, Methods, Part 4 adopts a more hierarchical approach to allow readers to easily find their specific topic or measurement of interest. As such it is divided into eight main chapters on soil sampling and statistics, the solid, solution, and gas phases, soil heat, solute transport, multi-fluid flow, and erosion. More than 100 world experts contribute detailed sections.
Download or read book Experimental Study of the Applications of Fiber Optic Distributed Temperature Sensors in Detecting Seepage in Soils written by Henglin Xiao and published by . This book was released on 2013 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fiber optic distributed temperature sensors (FODTS), based on Brillouin and Raman scattering, have been successfully used in various applications such as fire detection, petroleum pipeline leakage detection, and concrete dam crack monitoring. In recent years, FODTS have been used to monitor the seepage of reservoirs, earth dams, water channels, embankments, tunnels, and levees. Unlike other applications, monitoring the seepage of these structures involves acquiring, processing, and analyzing the temperature information of porous media that are mainly rocks and soils. Detailed studies on the thermal interaction among rocks/soils, water, and optic fibers are essential to improve judgment on the occurrence of seepage and explore the possibility of quantifying the seepage rate. This paper describes a large-scale experimental study that investigated the thermal interaction. The study was carried out on three different soils (i.e., poorly graded gravel, poorly graded sand, and silty sand) in both non-seepage and seepage conditions. The effects of soil types, moisture content, seepage rates, and heat source powers on temperature changes were assessed in this study. It was found that, with a heat source, FODTS could effectively detect seepage under most circumstances. The temperature change differs in different soils. For all the soils investigated, the moisture content and the heat power showed significant influence on the temperature change. The seepage rate has insignificant influence on temperature change.
Download or read book Earth Resources written by and published by . This book was released on 1983 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Citrus Nutrition written by Anoop Kumar Srivastava and published by Springer Science & Business Media. This book was released on 2012-05-30 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a solitary attempt to streamline all the possible information related to citrus nutrition, with emphasis on diagnosis and management of nutrient constraints, employing a variety of state-of-art techniques evolved globally over the years . While doing so care has been taken to include peripheral disciplines so that the discussion becomes more lively and authoritative. An entire array of exclusive subjects has been nicely portrayed with the help of latest data and photographs.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information and Communication Technologies for Agriculture Theme I Sensors written by Dionysis D. Bochtis and published by Springer Nature. This book was released on 2022-04-11 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the first (I) of four under the main themes of Digitizing Agriculture and Information and Communication Technologies (ICT). The four volumes cover rapidly developing processes including Sensors (I), Data (II), Decision (III), and Actions (IV). Volumes are related to ‘digital transformation” within agricultural production and provision systems, and in the context of Smart Farming Technology and Knowledge-based Agriculture. Content spans broadly from data mining and visualization to big data analytics and decision making, alongside with the sustainability aspects stemming from the digital transformation of farming. The four volumes comprise the outcome of the 12th EFITA Congress, also incorporating chapters that originated from select presentations of the Congress. The focus in this volume is on different aspects of sensors implementation in agricultural production (e.g., types of sensors, parameters monitoring, network types, connectivity, accuracy, reliability, durability, and needs to be covered) and provides variety of information and knowledge in the subject of sensors design, development, and deployment for monitoring agricultural production parameters. The book consists of four (4) Sections. The first section presents an overview on the state-off-the art in sensing technologies applied in agricultural production while the rest of the sections are dedicated to remote sensing, proximal sensing, and wireless sensor networks applications. Topics include: Emerging sensing technologies Soil reflectance spectroscopy LoRa technologies applications in agriculture Wireless sensor networks deployment and applications Combined remote and proximal sensing solutions Crop phenology monitoring Sensors for geophysical properties Combined sensing technologies with geoinformation systems /div
Download or read book Assessment of Non Point Source Pollution in the Vadose Zone written by Dennis L. Corwin and published by American Geophysical Union. This book was released on 1999-01-26 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 108. Non-point source (NPS) pollution in the vadose zone (simply defined as the layer of soil extending from the soil surface to the groundwater table) is a global environmental problem. Characteristically, NPS pollutants are widespread and occasionally ubiquitous in extent, thus making remediation efforts difficult and complex; have the potential for maintaining a relatively long active presence in the global ecosystem; and may result in long?]term, chronic health effects in humans and other life forms. Similar to other global environmental issues, the knowledge and information required to address the problem of NPS pollutants in the vadose zone cross several technological and subdisciplinary lines: spatial statistics, geographic information systems (GIS), hydrology, soil science, and remote sensing. Cooperation between disciplines and scientific societies is essential to address the problem. Evidence of such cooperation was the jointly sponsored American Geophysical Union Chapman/Soil Science Society of America (SSSA) Outreach Conference that occurred in October 1997, entitled “Applications of GIS, Remote Sensing, Geostatistics, and Solute Transport Modeling to the Assessment of Non-Point Source Pollution in the Vadose Zone.” The objective of the conference and this book, which was developed from the conference, was to explore current multidisciplinary research for assessing NPS pollution in soil and groundwater resources.
Download or read book Treatise on Water Science written by and published by Newnes. This book was released on 2010-09-01 with total page 2131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water quality and management are of great significance globally, as the demand for clean, potable water far exceeds the availability. Water science research brings together the natural and applied sciences, engineering, chemistry, law and policy, and economics, and the Treatise on Water Science seeks to unite these areas through contributions from a global team of author-experts. The 4-volume set examines topics in depth, with an emphasis on innovative research and technologies for those working in applied areas. Published in partnership with and endorsed by the International Water Association (IWA), demonstrating the authority of the content Editor-in-Chief Peter Wilderer, a Stockholm Water Prize recipient, has assembled a world-class team of volume editors and contributing authors Topics related to water resource management, water quality and supply, and handling of wastewater are treated in depth
Download or read book Encyclopedia of Natural Resources Water and Air Vol II written by Yeqiao Wang and published by CRC Press. This book was released on 2014-07-23 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: With unprecedented attention on global change, the current debate revolves around the availability and sustainability of natural resources and how to achieve equilibrium between what society demands from natural environments and what the natural resource base can provide. A full understanding of the range of issues, from the consequences of the changing resource bases to the degradation of ecological integrity and the sustainability of life, is crucial to the process of developing solutions to this complex challenge. Authored by world-class scientists and scholars, The Encyclopedia of Natural Resources provides an authoritative reference on a broad spectrum of topics such as the forcing factors and habitats of life; their histories, current status, and future trends; and their societal connections, economic values, and management. The content presents state-of-the-art science and technology development and perspectives of resource management. Written and designed with a broad audience in mind, the entries clearly elucidate the issues for readers at all levels. In Volume II, Water includes 59 entries and Air includes 31 entries. The Water entries cover topical areas such as fresh water, groundwater, water quality and watersheds, ice and snow, coastal environments, and marine resources and economics. The Air entries cover air pollutants, atmospheric oscillation, circulation patterns and atmospheric water storage, as well as agroclimatology, climate change, and extreme events. Additional topics in meteorology include acid rain, drought, ozone depletion, water storage, and more. Natural resources represent such a broad scope of complex and challenging topics that a reference book must cover a vast number of subjects in order to be titled an encyclopedia. The Encyclopedia of Natural Resources does just that. The topics covered help readers face current and future issues in the maintenance of clean air and water as well as the preservation of land resources and native biodiversity. Also Available Online This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail) [email protected] International: (Tel) +44 (0) 20 7017 6062; (E-mail) [email protected]
Download or read book Remote Sensing Handbook Three Volume Set written by Prasad Thenkabail and published by CRC Press. This book was released on 2018-10-03 with total page 2304 pages. Available in PDF, EPUB and Kindle. Book excerpt: A volume in the three-volume Remote Sensing Handbook series, Remote Sensing of Water Resources, Disasters, and Urban Studies documents the scientific and methodological advances that have taken place during the last 50 years. The other two volumes in the series are Remotely Sensed Data Characterization, Classification, and Accuracies, and Land Reso
