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Добірка наукової літератури з теми "Soil moisture Measurement"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 6 вересня 2023

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Статті в журналах з теми "Soil moisture Measurement"

1

Bretreger, David, Greg Hancock, In-Young Yeo, Dr Cristina Martinez, Dr Tony Wells, Tristan Cox, Veikko Kunkel, and Abraham Gibson. "Comparing the reliability of two soil moisture probes for high clay content NSW soils." Water e-Journal 8, no. 3 (2022): 1–17. http://dx.doi.org/10.21139/wej.2022.035.

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The accurate measurement of soil moisture can be a time-consuming task. Soil moisture is highly variable, and it can be difficult to capture spatially and temporally. While remote sensing has become a popular and ever-improving tool, on-ground measurement is required for both calibration, validation, and evaluation of any emerging technology. Many applications commonly require or use a relative value of soil moisture to assess the temporal persistency of moisture regimes across catchments or agricultural landscapes. This paper compares on-ground indirect soil moisture measurements from two com

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2

Groenevelt, P. H. "Hydrostatics of frozen soil." Canadian Journal of Soil Science 90, no. 3 (August 1, 2010): 403–8. http://dx.doi.org/10.4141/cjss09032.

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An outline is presented of the relations between the energy status of water and the content of liquid water and ice in frozen soils. The theory formulates the dependence of the soil moisture characteristic (moisture retention curve) of a frozen soil on the load pressure and the temperature. This formulation requires the definition of the envelope-pressure potentials and the frost potentials of the soil moisture and the ice present in the soil. These potentials are expressed in terms of the void ratio, the moisture ratio, the ice ratio, the moisture ratio equivalent, and the ice ratio equivalen

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3

Sui, Ruixiu, Horace C. Pringle, and Edward M. Barnes. "Soil Moisture Sensor Test with Mississippi Delta Soils." Transactions of the ASABE 62, no. 2 (2019): 363–70. http://dx.doi.org/10.13031/trans.12886.

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Abstract. One of the methods for irrigation scheduling is to use sensors to measure the soil moisture level in the plant root zone and apply water if there is a water shortage for the plants. The measurement accuracy and reliability of the soil moisture sensors are critical for sensor-based irrigation management. This study evaluated the measurement accuracy and repeatability of the EC-5 and 5TM soil volumetric water content (SVWC) sensors, the MPS-2 and 200SS soil water potential (SWP) sensors, and the 200TS soil temperature sensor. Six 183 cm × 183 cm × 71 cm wooden compartments were built i

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4

Nolan, M., D. R. Fatland, and L. Hinzman. "Dinsar measurement of soil moisture." IEEE Transactions on Geoscience and Remote Sensing 41, no. 12 (December 2003): 2802–13. http://dx.doi.org/10.1109/tgrs.2003.817211.

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5

Chanasyk, D. S., and M. A. Naeth. "Field measurement of soil moisture using neutron probes." Canadian Journal of Soil Science 76, no. 3 (August 1, 1996): 317–23. http://dx.doi.org/10.4141/cjss96-038.

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Soil moisture measurements are critical to all field studies of soil-plant-water relationships. Dependable and reliable techniques are required to provide such measurements. Neutron probes were developed more than 40 years ago and continue to be used today. They offer many advantages as a measurement technique, the most important of which is non-destructive, repetitive measurements of soil moisture. Much research has been focused on overcoming the two major limitations of neutron probes: measuring near-surface soil moisture and a smoothing of moisture data at sharp moisture discontinuities in

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6

Campora, Marina, Anna Palla, Ilaria Gnecco, Rossella Bovolenta, and Roberto Passalacqua. "The laboratory calibration of a soil moisture capacitance probe in sandy soils." Soil and Water Research 15, No. 2 (March 11, 2020): 75–84. http://dx.doi.org/10.17221/227/2018-swr.

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Determining and mitigating landslide risk is a technical-scientific objective, particularly for the protection and proper territorial management and planning. The slope stability depends on the pore pressure distribution, which is influenced by the saturation front propagation through the unsaturated zone, whose monitoring is useful to understand any possible instabilities. Such monitoring may be undertaken by sensors based on the measurement of the relative dielectric permittivity. Reliable relationships between the measurement and the soil moisture are necessary. The main objective of this s

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7

Rasche, Daniel, Markus Köhli, Martin Schrön, Theresa Blume, and Andreas Güntner. "Towards disentangling heterogeneous soil moisture patterns in cosmic-ray neutron sensor footprints." Hydrology and Earth System Sciences 25, no. 12 (December 22, 2021): 6547–66. http://dx.doi.org/10.5194/hess-25-6547-2021.

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Abstract. Cosmic-ray neutron sensing (CRNS) allows for non-invasive soil moisture estimations at the field scale. The derivation of soil moisture generally relies on secondary cosmic-ray neutrons in the epithermal to fast energy ranges. Most approaches and processing techniques for observed neutron intensities are based on the assumption of homogeneous site conditions or of soil moisture patterns with correlation lengths shorter than the measurement footprint of the neutron detector. However, in view of the non-linear relationship between neutron intensities and soil moisture, it is questionab

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8

M. T. Morgan, R. K. Wood, and R. G. Holmes. "Dielectric Moisture Measurement of Soil Cores." Transactions of the ASAE 36, no. 1 (1993): 17–22. http://dx.doi.org/10.13031/2013.28308.

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9

Song, Wenlong, Yizhu Lu, Yu Wang, Jingxuan Lu, and Haixian Shi. "A Pixel-Scale Measurement Method of Soil Moisture Using Ground-Penetrating Radar." Water 15, no. 7 (March 28, 2023): 1318. http://dx.doi.org/10.3390/w15071318.

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Ground validation of remote sensing soil moisture requires ground measurements corresponding to the pixel scale. To date, there is still a lack of simple, fast and reasonable methods for soil moisture measurement at pixel scale between point measurements and remote sensing observations. In this study, a measurement method of soil moisture using ground-penetrating radar (GPR) was proposed for pixel scale. We used a PulseEKKOTM PRO GPR system with 250 MHz antennas to measure soil moisture by Fixed Offset (FO) method in four 30 × 30 m2 plots chosen from the desert steppe. This study used a random

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10

Levy, Joseph S., and Jessica T. E. Johnson. "Remote Soil Moisture Measurement from Drone-Borne Reflectance Spectroscopy: Applications to Hydroperiod Measurement in Desert Playas." Remote Sensing 13, no. 5 (March 9, 2021): 1035. http://dx.doi.org/10.3390/rs13051035.

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The extent, timing, and magnitude of soil moisture in wetlands (the hydropattern) is a primary physical control on biogeochemical processes in desert environments. However, determining playa hydropatterns is challenged by the remoteness of desert basin sites and by the difficulty in determining soil moisture from remotely sensed data at fine spatial and temporal scales (hundreds of meters to kilometers, and hours to days). Therefore, we developed a new, reflectance-based soil moisture index (continuum-removed water index, or CRWI) that can be determined via hyperspectral imaging from drone-bor

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Дисертації з теми "Soil moisture Measurement"

1

Ridley, Andrew Martin. "The measurement of soil moisture suction." Thesis, Imperial College London, 1993. http://hdl.handle.net/10044/1/7933.

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2

Omotere, Olumide Olubunmi. "Improvement of the Soil Moisture Diagnostic Equation for Estimating Root-Zone Soil Moisture." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1157607/.

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Анотація:

Soil moisture information can be used accurately in determining the timing and amount of irrigation applied to plants. Pan and Pan et al. proposed a robust and simple daily diagnostic equation for estimating daily soil moisture. The diagnostic equation evaluates the relationship between the soil moisture loss function and the summation weighted average of precipitation. The loss function uses the sinusoidal wave function which employs day of the year (DOY) to evaluate the seasonal variation in soil moisture loss for a given year. This was incorporated into the daily diagnostic equation to esti

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3

Howell, C. L. (Carolyn Louise). "Comparison of different methods by means of which water holding capacity of soil is determined and the prediction of water holding capacity from soil texture in coarse-textured soil." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/49890.

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Thesis (MScAgric)--University of Stellenbosch, 2004.<br>ENGLISH ABSTRACT: Irrigation scheduling is one of the most important cultural practices in irrigated vineyards. Water holding capacity of soil is arguably therefore one of the most important characteristics of a soil as it determines how much water can be made available to the plant. The measurement of water holding capacity of soils is time consuming and costly. In situ determinations are often impractical to determine. For routine determinations, water holding capacity is therefore determined on disturbed samples. Such a method fo

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4

Rahgozar, Mandana Seyed. "Estimation of evapotranspiration using continuous soil moisture measurement." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001812.

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5

Hussen, Akif Ali. "Measurement of Unsaturated Hydraulic Conductivity in the Field." FIND on the Web, 1991.

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6

Streicher, John James. "A new method to compare radiation view factors and a study of bare soil evaporation using microlysimeters." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26645.

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Анотація:

In Chapter 1, a numerical computer technique is developed to determine radiation view factors between planar surfaces whose geometry is sufficiently regular so as to be defined by algebraic equations. This technique does not require spherical, cylindrical or rectangular symmetry, although such symmetries may be exploited when they exist. Once the essential geometric problem is formulated, enough generality can be built into the solutions so that certain "new" configurations, derived from translations or rotations of one surface relative to the other, can be solved as a matter of course. In Ch

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7

Hussen, Akif Ali 1957. "Measurement of Unsaturated Hydraulic Conductivity in the Field." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/191170.

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Unsaturated hydraulic conductivity was measured using four different methods. Tension permeameters were used to measure unsaturated hydraulic conductivity in the field, using a single disc method, which depends on the measurements of sorptivity, steady state flow rate, initial and final water content (White and Perroux, 1987, 1989). Also, a double disc method was used which utilizes Wooding's (1968) equation for two different disc radii at the same tension for steady state flow rates. Undisturbed and disturbed soil cores were used to measure unsaturated hydraulic conductivity in the lab, using

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8

Houser, Paul Raymond 1970. "Remote-Sensing Soil Moisture Using Four-Dimensional Data Assimilation." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/191208.

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The feasibility of synthesizing distributed fields of remotely-sensed soil moisture by the novel application of four-dimensional data assimilation applied in a hydrological model was explored in this study. Six Push Broom Microwave Radiometer images gathered over Walnut Gulch, Arizona were assimilated into the TOPLATS hydrological model. Several alternative assimilation procedures were implemented, including a method that adjusted the statistics of the modeled field to match those in the remotely sensed image, and the more sophisticated, traditional methods of statistical interpolation and New

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9

Ahmed, Zubair. "Design of Autonomous Low Power Sensor for Soil Moisture Measurement." Thesis, Linköpings universitet, Elektroniksystem, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-90634.

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Drought is the most severe disaster compared to other disasters in human civilization and their impacts are serious which can cause hungur, thrist, food shortages, loss of livestock directly effects the human life. The main objective of this project is to develop an early warning system (EWS) [3] for drought indices by using wireless sensor networks (WSNs) which is the only way forward for an on-site monitoring and validation of locally defined drought indices [3].The designed wireless sensor network (WSN) consisting of a sensor unit, a master unit and a sensor power management unit (PMU). The

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10

Guan, Zhi Wei 1953. "Soil moisture approximation using thermal inertia maps : verification study on the relationship between HCMM observations and antecedent precipitation index for St. Lawrence Lowland of Southern Quebec." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55601.

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Книги з теми "Soil moisture Measurement"

1

Heidmann, L. J. Comparison of moisture retention curves for representative basaltic and sedimentary soils in Arizona prepared by two methods. [Fort Collins, Colo.]: USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, 1990.

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2

Smreciu, Elizabeth Ann. Soil moisture levels - 1995: Oldman River Dam. Edmonton, Alta: Wild Rose Consulting, Inc., 1995.

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3

Soil water measurement: A practical handbook. Hoboken, NJ: John Wiley & Sons, 2016.

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4

Hudson, Norman. Field measurement of soil erosion and runoff. Rome: Food and Agriculture Organization of the United Nations, 1993.

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5

Hudson, Norman. Field measurement of soil erosion and runoff. Rome: Food and Agriculture Organization of the United Nations, 1993.

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6

Klemunes, John A. Determining soil volumetric moisture content using time domain reflectometry. McLean, VA: U.S. Dept. of Transportation, Federal Highway Administration, Research and Development, Turner-Fairbank Highway Research Center, 1998.

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7

Klemunes, John A. Determining soil volumetric moisture content using time domain reflectometry. McLean, VA: U.S. Dept. of Transportation, Federal Highway Administration, Research and Development, Turner-Fairbank Highway Research Center, 1998.

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8

Wegehenkel, Martin. Beitrag zur flächenhaften Modellierung von Verdunstung und Bodenfeuchte. Freiburg i.Br: Im Selbstverlag des Institutes für Physische Geographie der Albert-Ludwigs-Universität Freiburg i.Br., 1992.

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9

United States. National Aeronautics and Space Administration., ed. Airborne gamma radiation measurements of soil moisture during FIFE: Activities and results. [Washington, DC: National Aeronautics and Space Administration, 1992.

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10

Wolfgang, Wagner. Soil moisture retrieval from ERS scatterometer data. Wien: Veröffentlichung des Instituts für Photogrammetrie und Fernerkundung, 1998.

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Частини книг з теми "Soil moisture Measurement"

1

Yu, Kegen. "Soil Moisture Measurement." In Navigation: Science and Technology, 267–304. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0411-9_9.

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2

Ahmad, Latief, Raihana Habib Kanth, Sabah Parvaze, and Syed Sheraz Mahdi. "Measurement of Soil Moisture." In Experimental Agrometeorology: A Practical Manual, 131–35. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-69185-5_19.

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3

Jonard, François, Heye Bogena, David Caterina, Sarah Garré, Anja Klotzsche, Alessandra Monerris, Mike Schwank, and Christian von Hebel. "Ground-Based Soil Moisture Determination." In Observation and Measurement, 1–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-47871-4_2-1.

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4

Jonard, François, Heye Bogena, David Caterina, Sarah Garré, Anja Klotzsche, Alessandra Monerris, Mike Schwank, and Christian von Hebel. "Ground-Based Soil Moisture Determination." In Observation and Measurement of Ecohydrological Processes, 29–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-48297-1_2.

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5

Koch, Axelle, Félicien Meunier, Harry Vereecken, and Mathieu Javaux. "Root Processes Affecting the Soil Moisture Patterns in Ecohydrology." In Observation and Measurement, 1–17. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-47871-4_13-1.

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Hodnett, M. G. "The Neutron Probe for Soil Moisture Measurement." In Advanced Agricultural Instrumentation, 148–92. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4404-6_7.

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7

Gomez, Eduardo, Jorge Eliecer Duque, Alvaro José Rojas, Cristian Camilo Jaik, and Jose Angel Pertuz. "Agro-Smart Caribe: Soil Moisture Measurement System." In Communications in Computer and Information Science, 422–34. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-86702-7_36.

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8

Saptomo, Satyanto Krido, Budi Indra Setiawan, Yudi Chadirin, Kazutoshi Osawa, Toshihide Nagano, Kosuke Mizuno, Dian Novarina, Susilo Sudarman, and Aulia Aruan. "Patterns of CO2 Emission from a Drained Peatland in Kampar Peninsula, Riau Province, Indonesia." In Global Environmental Studies, 89–101. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0906-3_5.

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AbstractIt was crucial to acquire soil CO2 flux data from a bare peatland site in Kampar Peninsula, Riau Province, Indonesia so as to evaluate the carbon budget of the site in which water is managed, drained, and utilized for acacia plantation. CO2 flux was continuously measured from July 2012 to February 2013 using an automatic soil CO2 flux measurement system. In this study, the factors affecting carbon emission were analyzed and tested for indirect CO2 flux estimation, and the results showed that CO2 flux varied with weather, water, and soil-related variables, and where there was rainfall, soil temperature and soil moisture both played an important role. CO2 flux was modeled using an artificial neural network (ANN) approach with inputs of soil moisture, temperature, and electrical conductivity (EC) as proxy variables. Based on the measurements, the total carbon dioxide (CO2) emission during the measurement period from July 2012 to June 2013 was 52.25 t ha−1. Total CO2 emission in 2012 was estimated as 54.86 t ha−1 using the ANN model. Furthermore, the results generated by the model showed that levels of CO2 flux declined as the temperature decreased, and soil moisture increased toward soil water saturation.

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Koch, Axelle, Félicien Meunier, Harry Vereecken, and Mathieu Javaux. "Root Processes Affecting Soil Moisture Patterns in Ecohydrology." In Observation and Measurement of Ecohydrological Processes, 417–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-48297-1_13.

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O’Connor, Kevin M., and Charles H. Dowding. "Field Experience and Verification of Soil Moisture Measurement." In GeoMeasurements by Pulsing TDR Cables and Probes, 81–105. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003067726-4.

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Тези доповідей конференцій з теми "Soil moisture Measurement"

1

Hatanaka, Daisuke, Alireza Ahrary, and Dennis Ludena. "Research on Soil Moisture Measurement Using Moisture Sensor." In 2015 IIAI 4th International Congress on Advanced Applied Informatics (IIAI-AAI). IEEE, 2015. http://dx.doi.org/10.1109/iiai-aai.2015.289.

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Nikolov, Georgi Todorov, Elitsa Emilova Gieva, Boyanka Marinova Nikolova, and Ivelina Nikolaeva Ruskova. "Soil Moisture Measurement with Flexible Sensors." In 2020 XXIX International Scientific Conference Electronics (ET). IEEE, 2020. http://dx.doi.org/10.1109/et50336.2020.9238304.

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3

Hassan, Muhsiul, and Nemai C. Karmakar. "Soil moisture measurement using smart antennas." In 2014 8th International Conference on Electrical and Computer Engineering (ICECE). IEEE, 2014. http://dx.doi.org/10.1109/icece.2014.7027009.

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4

Chen, Xuemin, Jing Li, Renyue Liang, Yijie Sun, C. Richard Liu, Richard Rogers, and German Claros. "Microstrip transmission line for soil moisture measurement." In Optics East, edited by Anbo Wang. SPIE, 2004. http://dx.doi.org/10.1117/12.571448.

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Birdal, Gazanfer, Alp Akin, and İhan Sarikaya. "Soil Moisture Measurement Tools Production and Development." In SIXTH INTERNATIONAL CONFERENCE OF THE BALKAN PHYSICAL UNION. AIP, 2007. http://dx.doi.org/10.1063/1.2733505.

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Priyaa, A. S. Pathma, Adil Mohammed, C. Ambili, N. S. Anusree, Anne Varghese Thekekara, R. Rajesh Mohan, and S. Mridula. "Microwave Sensor Antenna for Soil Moisture Measurement." In 2015 Fifth International Conference on Advances in Computing & Communications (ICACC). IEEE, 2015. http://dx.doi.org/10.1109/icacc.2015.92.

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Calla, O. P. N., Dinesh Bohra, Rajesh Vyas, Bhawani Shankar Purohit, Rakesh Prasher, Abhishek Loomba, and Naveen Kumar. "Measurement of soil moisture using microwave radiometer." In 2008 International Conference on Recent Advances in Microwave Theory and Applications (MICROWAVE). IEEE, 2008. http://dx.doi.org/10.1109/amta.2008.4763147.

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Pacheco Gil, Henry Antonio, Juan Ramón Primera, Lizardo Mauricio Reina Bowen, and Crishtian Emil Vega Ponce. "Measurement of soil moisture with spatial sensors." In VIII Congreso Internacional de Investigación REDU. Medwave, 2022. http://dx.doi.org/10.5867/medwave.2022.s1.ci64.

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Singh, Kamlesh Kumar, Neeraj K. Chasta, and Maryam Shojaei Baghini. "Experimental Electrical Modeling of Soil for In Situ Soil Moisture Measurement." In 2013 International Symposium on Electronic System Design (ISED). IEEE, 2013. http://dx.doi.org/10.1109/ised.2013.31.

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lingli, Zhao. "Soil Moisture Measurement Based on Monte Carlo Method." In 2019 Chinese Control And Decision Conference (CCDC). IEEE, 2019. http://dx.doi.org/10.1109/ccdc.2019.8832820.

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Звіти організацій з теми "Soil moisture Measurement"

1

Pradhan, Nawa Raj. Estimating growing-season root zone soil moisture from vegetation index-based evapotranspiration fraction and soil properties in the Northwest Mountain region, USA. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/42128.

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A soil moisture retrieval method is proposed, in the absence of ground-based auxiliary measurements, by deriving the soil moisture content relationship from the satellite vegetation index-based evapotranspiration fraction and soil moisture physical properties of a soil type. A temperature–vegetation dryness index threshold value is also proposed to identify water bodies and underlying saturated areas. Verification of the retrieved growing season soil moisture was performed by comparative analysis of soil moisture obtained by observed conventional in situ point measurements at the 239-km2 Reyno

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2

Eylander, John, Michael Lewis, Maria Stevens, John Green, and Joshua Fairley. An investigation of the feasibility of assimilating COSMOS soil moisture into GeoWATCH. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41966.

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This project objective evaluated the potential of improving linked weather-and-mobility model predictions by blending soil moisture observations from a Cosmic-ray Soil Moisture Observing System (COSMOS) sensor with weather-informed predictions of soil moisture and soil strength from the Geospatial Weather-Affected Terrain Conditions and Hazards (GeoWATCH). Assimilating vehicle-borne COSMOS observations that measure local effects model predictions of soil moisture offered potential to produce more accurate soil strength and vehicle mobility forecast was the hypothesis. This project compared soi

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3

Brisco, B., R. J. Brown, and G. C. Topp. Multi-frequency Portable Dielectric Probes for In-situ Soil Moisture Measurement. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/217759.

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4

Olsen, Khris B., Gregory W. Patton, P. Evan Dresel, and John C. Evans, Jr. Measurement of Tritium in Gas Phase Soil Moisture and Helium-3 in Soil Gas at the Hanford Townsite and 100 K Area. Office of Scientific and Technical Information (OSTI), July 2000. http://dx.doi.org/10.2172/781852.

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5

Olsen, Khris B., Gregory W. Patton, R. Poreda, P. Evan Dresel, and John C. Evans. Measurement of Tritium in Gas Phase Soil Moisture and Helium-3 in Soil Gas at the Hanford Townsite and 100 K Area. Office of Scientific and Technical Information (OSTI), July 2000. http://dx.doi.org/10.2172/965209.

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6

KB Olsen, GW Patton, R Poreda, PE Dresel, and JC Evans. Measurement of Tritium in Gas Phase Soil Moisture and Helium-3 in Soil Gas at the Hanford Townsite and 100 K Area. Office of Scientific and Technical Information (OSTI), July 2000. http://dx.doi.org/10.2172/757601.

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7

Dasberg, Shmuel, Jan W. Hopmans, Larry J. Schwankl, and Dani Or. Drip Irrigation Management by TDR Monitoring of Soil Water and Solute Distribution. United States Department of Agriculture, August 1993. http://dx.doi.org/10.32747/1993.7568095.bard.

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Drip irrigation has the potential of high water use efficiency, but actual water measurement is difficult because of the limited wetted volume. Two long-term experiments in orchards in Israel and in California and several field crop studies supported by this project have demonstrated the feasibility of precise monitoring of soil water distribution for drip irrigation in spite of the limited soil wetting. Time Domain Reflectometry (TDR) enables in situ measurement of soil water content of well defined small volumes. Several approaches were tried in monitoring the soil water balance in the field

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8

Beauregard, Yannick. PR261-193604-R01 Optimizing Stress Corrosion Cracking Management - Field and Economic Study. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), October 2021. http://dx.doi.org/10.55274/r0012179.

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This work aims to improve pipeline segment prioritization for stress corrosion cracking (SCC) excavations. Specifically, it is aimed at optimizing the technical accuracy and the cost of the Association for Materials Protection and Performance (AMPP, formerly NACE) Stress Corrosion Cracking Direct Assessment (SP0204-2015) process by: - evaluating the SCC susceptibility criteria of soil property parameters that were proposed in the first phase of the project (pH, resistivity, sulfide concentration, soil carbon dioxide (CO2) concentration, carbonate concentration, soil oxygen (O2) concentration,

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9

King and Jack. L51906 The Role of Redox and Corrosion Potentials in the Corrosion of Line Pipe Steel. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), September 2001. http://dx.doi.org/10.55274/r0010374.

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A combined lab and field program has been performed to study the external corrosion behaviour of buried linepipe. The overall aim of the project was to attempt to correlate pipe damage with measurable soil properties, in particular the redox potential as measured by buried soil probes. The lab component of the project involved the measurement of weight-loss corrosion rates in three types of soil, under saturated and as-received moisture conditions, and under permanently aerobic, permanently anaerobic or cyclic anaerobic/aerobic redox conditions. The soil conditions and coupon corrosion potenti

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10

Shmulevich, Itzhak, Shrini Upadhyaya, Dror Rubinstein, Zvika Asaf, and Jeffrey P. Mitchell. Developing Simulation Tool for the Prediction of Cohesive Behavior Agricultural Materials Using Discrete Element Modeling. United States Department of Agriculture, October 2011. http://dx.doi.org/10.32747/2011.7697108.bard.

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Анотація:

The underlying similarity between soils, grains, fertilizers, concentrated animal feed, pellets, and mixtures is that they are all granular materials used in agriculture. Modeling such materials is a complex process due to the spatial variability of such media, the origin of the material (natural or biological), the nonlinearity of these materials, the contact phenomenon and flow that occur at the interface zone and between these granular materials, as well as the dynamic effect of the interaction process. The lack of a tool for studying such materials has limited the understanding of the phen

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