Relevant bibliographies by topics / Effect of soil moisture on

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'Effect of soil moisture on'

Author: Grafiati
Published: 4 June 2021
Last updated: 31 July 2024

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Journal articles on the topic "Effect of soil moisture on"

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Richter, H., A. W. Western, and F. H. S. Chiew. "The Effect of Soil and Vegetation Parameters in the ECMWF Land Surface Scheme." Journal of Hydrometeorology 5, no. 6 (December 1, 2004): 1131–46. http://dx.doi.org/10.1175/jhm-362.1.

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Abstract Numerical Weather Prediction (NWP) and climate models are sensitive to evapotranspiration at the land surface. This sensitivity requires the prediction of realistic surface moisture and heat fluxes by land surface models that provide the lower boundary condition for the atmospheric models. This paper compares simulations of a stand-alone version of the European Centre for Medium-Range Weather Forecasts (ECMWF) land surface scheme, or the Viterbo and Beljaars scheme (VB95), with various soil and vegetation parameter sets against soil moisture observations across the Murrumbidgee River catchment in southeast Australia. The study is, in part, motivated by the adoption of VB95 as the operational land surface scheme by the Australian Bureau of Meteorology in 1999. VB95 can model the temporal fluctuations in soil moisture, and therefore the moisture fluxes, fairly realistically. The monthly model latent heat flux is also fairly insensitive to soil or vegetation parameters. The VB95 soil moisture is sensitive to the soil and, to a lesser degree, the vegetation parameters. The model exhibits a significant (generally wet) bias in the absolute soil moisture that varies spatially. The use of the best Australia-wide available soils and vegetation information did not improve VB95 simulations consistently, compared with the original model parameters. Comparisons of model and observed soil moistures revealed that more realistic soil parameters are needed to reduce the model soil moisture bias. Given currently available continent-wide soils parameters, any initialization of soil moisture with observed values would likely result in significant flux errors. The soil moisture bias could be largely eliminated by using soil parameters that were derived directly from the actual soil moisture observations. Such parameters, however, are only available at very few point locations.
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Hatton, Thomas J., Neil R. Viney, E. A. Catchpole, and Neville J. De Mestre. "The Influence of Soil Moisture on Eucalyptus Leaf Litter Moisture." Forest Science 34, no. 2 (June 1, 1988): 292–301. http://dx.doi.org/10.1093/forestscience/34.2.292.

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Abstract An experiment was carried out to test the assumption that surface soil moisture affects fine dead fuel moisture. A randomized block design was used to test the response in Eucalyptus leaf moisture to two levels of soil moisture over a range of exposures to the sun, wind, and soil surface. Soil moisture clearly influenced daily leaf fuel moisture minima and maxima. The effect on daily minima was most pronounced for the bottom of the litter layer, which was shielded from the sun and wind and in contact with the soil. The effect of soil moisture on daily fuel moisture maxima was most pronounced for exposed samples. The responses in fuel moisture due to exposure and soil moisture were compared with fine fuel moistures predicted by three fuel moisture models. The various treatment combinations of soil moisture and exposure produced fuel moistures that varied too widely for any of the tested fuel moisture models to be consistently most accurate. For. Sci. 34(2):292-301.
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Hamad, Asal Mahmud, and Mahmood Gazey Jassam. "A Comparative Study for the Effect of Some Petroleum Products on the Engineering Properties of Gypseous Soils." Tikrit Journal of Engineering Sciences 29, no. 3 (October 15, 2022): 69. http://dx.doi.org/10.25130/tjes.29.3.7.

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Gypseous soils are considered problematic soils because the soil cavities happen during receiving the water or this type of soil and solving gypsum materials and contract in a soil volume. In this study, three types of gypseous soils are used; soil1, soil2, and soil3 with gypsum content (28.71%, 43.6%, and 54.88%) respectively, petroleum products (engine oil, fuel oil, and kerosene) are added to the soils with percentages (3%, 6%, 9%, and 12%) for each product. The result showed that specific gravity, liquid limit, optimum moisture content (O.M.C), and maximum dry density decreased with an increased percentage of product for all types of products. The direct shear (dry and soaked case) results show that increasing the (angle of internal friction and the soil cohesion) for soil1, soil2, and soil3 by adding engine oil and fuel oil. Still, when the soils were treated with kerosene, the angle of internal friction increased while cohesion decreased. The collapse potential for the treated soils increases with increasing gypsum content for all petroleum products. The collapse potential (CP) for (soil1) decreased by 47% when using 6% of the engine oil, 48.8% when using 9% of the fuel oil, and 55% when using 9% of the kerosene. The same percentage of the petroleum products (engine oil, fuel oil, and kerosene) decrease the collapse potential for (soil2), (47%, 46%, and 50%) respectively and decrease the collapse potential for (soil 3), (51%, 47.7%, and 52%) respectively. In the unconfined compressive test applied on (soil1) using maximum density, the results show that the soil strength increased (26% and 10%) when using 6% and engine oil and fuel oil, respectively, while the soil strength decreased by 29% when treated with 9% of kerosene.
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Kováč, K., M. Macák, and M. Švančárková. "The effect of soil conservation tillage on soil moisture dynamics under single cropping and crop rotation." Plant, Soil and Environment 51, No. 3 (November 19, 2011): 124–30. http://dx.doi.org/10.17221/3564-pse.

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During 1993–1995 the effect of conventional tillage, reduced till, mulch till and no-till technology on soil moisture dynamics has been studied in field experiment on Haplic chernozems near Piešťany. The tillage treatments were evaluated under a single cropping of maize and spring barley – common peas – winter wheat crop rotation. Soil samples for gravimetric determination of moisture content were collected from six layers up to 0.8 m, three times per year (April–July). The soil moisture was highly significantly influenced in order of importance by date of sampling, year, growing crops, tillage treatments, soil layer and by interactions year × crops, year × date of sampling, crops × date of sampling, tillage × date of sampling, year × tillage, date of sampling × layer and significant influences by interactions, tillage × crops. The soil under conventional tillage had significantly higher moisture content than tested reduced till, mulch till and no-till treatments. The significant influence of maize stand on better soil humidity condition (16.35%) in comparison to crops grown in a crop rotation (in average 14.10%) has been ascertained.
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Abbaspour-Gilandeh, Yousef, Fereshteh Hasankhani-Ghavam, Gholamhosein Shahgoli, Vali Rasooli Shrabian, and Mohammadreza Abbaspour-Gilandeh. "Investigation of the Effect of Soil Moisture Content, Contact Surface Material and Soil Texture on Soil Friction and Soil Adhesion Coefficients." Acta Technologica Agriculturae 21, no. 2 (June 1, 2018): 44–50. http://dx.doi.org/10.2478/ata-2018-0009.

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Abstract Soil friction and soil adhesion increase the implement draft force and energy consumption particularly in the tools that have larger contact area with soil. The main ways of lowering the total draft force of the tillage tools include the use of proper materials in tools structures as well as application of the tools in appropriate soil moisture content condition. This paper investigates the effects of soil moisture content, contact surface material and soil texture on soil friction and soil adhesion coefficients. To measure the coefficients of soil friction and soil adhesion, a measurement system was developed at the University of Mohaghegh Ardabili. Experiments for each soil texture were performed at five levels of soil moisture content and four contact materials of steel, cast iron, rubber, and teflon with three replications. Results have shown that in all soil types, the effects of soil moisture content and contact materials had a significant effect on the coefficient of both soil friction and soil adhesion at the probability level of 1%. The coefficient of friction increased with soil moisture content increment and reached its maximum and then had a drop in the fluid phase. Results have shown that the mean values of soil friction and soil adhesion coefficients were significantly different from the studied soils.
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Conklin, Katie L., and Rodney G. Lym. "Effect of Temperature and Moisture on Aminocyclopyrachlor Soil Half-Life." Weed Technology 27, no. 3 (September 2013): 552–56. http://dx.doi.org/10.1614/wt-d-12-00147.1.

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Aminocyclopyrachlor will control a variety of invasive weeds but may injure sensitive plant species if seeded into treated soil too soon after application. Aminocyclopyrachlor 50% dissipation time (DT50) ranged from 3 to > 112 d in four soils from the Northern Great Plains. The DT50was dependent on several factors including soil type, moisture content, and temperature. Across four different soil textures, aminocyclopyrachlor dissipation generally increased as soil moisture content increased, but moisture had less of an impact in sandy soils. Aminocyclopyrachlor dissipation also increased as temperature increased in the four soils. The most rapid dissipation occurred in soils with higher clay content, which also had the highest organic matter content of the soils evaluated, and an average DT50of less than 20 d. Seeding sensitive pasture, range, or crop species after aminocyclopyrachlor applications should be done with caution since the herbicide has potential for long persistence in the soil.
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Li, C., S. Gao, J. Zhang, L. Zhao, and L. Wang. "Moisture effect on soil humus characteristics in a laboratory incubation experiment." Soil and Water Research 11, No. 1 (June 2, 2016): 37–43. http://dx.doi.org/10.17221/21/2015-swr.

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Kökdener, Meltem, and Müjgan Şahin Yurtgan. "The Effect of Soil Type and Moisture Level on the Development of Lucilia sericata (Diptera: Calliphoridae)." Journal of Medical Entomology 59, no. 2 (January 20, 2022): 508–13. http://dx.doi.org/10.1093/jme/tjab229.

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Abstract The present study aimed to determine the effects of the soil type and the moisture contents on the some life-history parameters of Lucilia sericata (Meigen, 1826) (Diptera: Calliphoridae). The larval and pupal survival, duration of development periods, and the weight of pupae and adult of L. sericata were examined at three different types of soil (clay, loamy, and sandy) with five moisture contents (0, 25, 50, 75, 100%). The post feeding L. sericata larvae were transferred to a plastic cup filled with soils with different moisture content, and all cups were kept at 27°C, 65% RH, and a photoperiod of 12:12 (L:D) h. In this article, the effects on some life-history parameters were compared with a two-way analysis of variance (ANOVA). Accordingly, the findings of this article indicate that moisture contents of soils and soil type have a significant effect on the development time of L. sericata. Furthermore, it has been found that larvae can survive on extremely wet substrates (75–100% humidity), although their development time is longer than other moisture content. Pupal and adult weight was significantly different among soil type and soil moisture. Our results provide a reference information for sufficient estimation of the effects of changes in moisture-related to soil type or climate on studies of forensic and biological control of L. sericata.
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Korolev, Vladimir A., and Elena A. Fedyaeva. "EFFECT OF PHASE COMPOSITION ON THE PARAMETERS OF NON-ISOTHERMAL MOISTURE TRANSFER IN UNSATURATED SANDY SOILS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 20, no. 1 (March 10, 2014): 95–102. http://dx.doi.org/10.3846/13923730.2013.843584.

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This paper considers the influence of phase composition on the parameters of non-isothermal moisture transfer in unsaturated sandy soils. The technique of study options non-isothermal moisture transfer to disperse soil of disturbed structure. The exploratory procedure of the parameters in disperse soils having disturbed structure in the wide range of their phase composition using triangular diagrams is expounded. Shown that the parameters non-isothermal moisture transfer depend on moisture content and soil composition density. Established that for the sandy soil there is the “optimal” range of moisture content and density at which the non-isothermal moisture transfer is most efficient. The dynamics of the field moisture content of sand in time is identified.
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Gholamhossein, Shahgholi, and Aboali Mohammad Reza. "Investigating soil compaction using strain transducer." Research in Agricultural Engineering 64, No. 1 (March 27, 2018): 8–14. http://dx.doi.org/10.17221/103/2016-rae.

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Soil compaction has been a challenging problem in agriculture. The parameters affecting soil compaction and their effects should be investigated. Thereby, series of soil sinkage tests were conducted at the University of Mohaghegh Ardabili to evaluate the effect of soil moisture, loading velocity, depth and loading times on soil compaction using strain transducers. Three strain transducers were placed in x, y and z directions and their displacement was recorded during loading and unloading. Experiments were arranged as a complete randomized factorial design and 3 levels of moisture content and loading velocity and 2 levels of depth and loading time were investigated at three replications. It was found that with moisture increment soil displacement increased whereas increasing loading velocity and depth decreased soil compaction. There was a significant difference between the first and second loading time. The mutual binary effect of moisture content and loading time as well as that of depth and loading times were significant for transducer displacement. Mutual triplet effect of moisture, velocity and depth on the transducer displacement was significant.
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Dissertations / Theses on the topic "Effect of soil moisture on"

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El-Bishti, Magda Bashier. "Determination of soil moisture using dielectric soil moisture sensors : effect of soil temperature and implication for evaporation estimates." Thesis, University of Reading, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487102.

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The reliability and accuracy of several sensors that employ the relationship between dielectric constant and soil moisture constant, e, in particular capacitance sensors were investigated. Results obtained from laboratory examinations ,of a Theta probe, TP, selected as a representative model for capacitance sensors, suggested that the sensor output was affected by temperature variations, electrical conductivity levels, spatial variation in sample bulk density as well as the level of compaction of the soil surrounding the sensor's rods. Detailed in situ e data collected usmg capacitance sensors were used to calculate sub-daily estimates of evaporation, E, using the soil water balance method, combined with the zero-flux-plane (ZFP) approach, for plots of bare soil, rapeseed and a maize field. These sensors comprised Theta probes (TP), Profiles probes (PP), ECH20 probes (EP) and Aquaflex sensors (AF). / The field output data of these sensors were analysed and compared with e obtained with both, the gravimetric and neutron probe method. The absolute values of B as measured by the various capacitance sensors differed considerably. Furthermore, the outputs of these sensors (apart from the AF probes) were found to be affected by temperature, which would result in an anomalous course of diurnal E. Also, B-data were subject to noise which required smoothing to ensure a physically realistic variation in E, when compared to estimates with the Penman-Monteith equation, EPAf, and the eddy-covariance method (maize field). E was determined from diurnal changes in vertically integrated soil moisture content above the ZFP. Smoothed values of Bwere temperature-corrected using fieldbased and laboratory-based correction equations. A considerable difference between field- and laboratory-based temperature corrections procedures was noticed, and correction factors strongly depended on B. As this resulted in an overly complicated correction procedure, which consequently gave unreliable E-values, it was then decided to use a constant correction factor (based on the field correction procedure), for each capacitance probe. For the bare soil plot, with the exception ofPP and EP only Bprofiles obtained with the TP and AF sensors produced relatively reliable E values when compared to Enf. By contrast, when these capacitance sensors were used under a canopy, all sensors yielded satisfactory E-values. This was most likely caused by reduced amplitudes of soil temperatures under the canopy and the fact that the dimensions of most sensors do not allow installation in the top soil (~3-5cm) layer at which most evaporation would take place in bare soils. We therefore recommended that these sensors can be used for diurnal B measurements and E determination under canopy provided that an appropriate temperature-correction procedure for each sensor is applied. To obtain reliable Band E estimates in bare soil, more research needs to be done. For more reliable e and E estimations in bare soils further extensive field trials would be strongly advised
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Erindi-Kati, Anila. "Remote sensing and root zone soil moisture." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84027.

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This study investigated the possibility of three approaches in determination of soil moisture in the root zone. The aim of the study was to contribute to the development of soil moisture monitoring methods to better help crop best management practices.
Two fields were examined, one at the Macdonald Campus of McGill University and the other near St. Jean-sur-Richelieau. Three approaches were used; (1) a hand-held hyper-spectral sensor (350-2500 nm), (2) a Geonics RTM EM-38 conductivity meter and, (3) gravimetric soil moisture sampling.
The first experiment (at St. Jean-sur-Richelieu) investigated the possibility of monitoring soil moisture with the EM_38, in the presence of field elevation and soil texture. The second experiment (at Macdonald Campus) investigated the possibility of using hyper-spectral sensor data for determination of soil characteristics in the root zone, in the presence of such factors as (a) irrigation (main treatment), (b) nitrogen (sub-treatment), and (c) weed control (sub-sub-treatment). Statistical regression analyses and Artificial Neural Network models were used to select the best waveband region for determination of soil root zone moisture.
The coefficients of determination obtained by the statistical analyses ranged from 0.75 to 0.94. The wavebands most frequently identified by these analyses ranged from 1100 nm-1900 nm.
The performances of the ANN training models were considered acceptable (R2 from 0.6 to 0.8). The lack of sufficient data greatly impacts this approach.
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Zeywar, Nadim Shukry 1959. "Effect of sensor placement on the relationships of crop water stress index, soil moisture tension and soil moisture content." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/191981.

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A field experiment was conducted to investigate the feasibility of making one measurement of soil moisture tension/content or crop water stress index (CWSI), and from it determine when and how much to irrigate. Cotton (Gossvpium hirsutum C.V. DPL-90) was planted in a sandy loam soil prepared with an underground drip irrigation system. Measurements of soil moisture tension, soil moisture content, plant temperature, and wet- and dry-bulb temperatures were made. The results indicate that soil moisture tension above 0.30 m and soil moisture content above 0.50 m in the root zone can be used as good indicators for CWSI or vice versa. Further work is required using different irrigation systems and different crops in larger land areas.
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Kim, Bruce Chang Shik. "MULTI-STEP ELECTROCHEMICAL IMPULSE GENERATOR AND POTENTIAL MONITORING SYSTEM." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275454.

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Park, Jin Young. "A critical assessment of moist tamping and its effect on the initial and evolving structure of dilatant triaxial specimens." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/23949.

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Kelley, Elizabeth Jane. "The effects of soil moisture on pavement systems." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1175799994.

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Barrak, Khalid Mohamed 1956. "Effects of various mulches on soil moisture conservation." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/191944.

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The purpose of this work was to study and evaluate the effect of various mulches on the soil moisture content for sandy loam soil under high temperatures. The straw, wood shavings, and rock fragments were used with different rates of application for covering soil. Treatments were compared to bare soil. The moisture content was significantly higher for mulched treatments. However, the effectiveness of wood shavings and rock fragments mulches did not seem different in soil moisture content, while straw mulch did. The soil moisture content for the straw had the highest value at the end of the experiment. The straw mulch apparently conserved soil moisture over the other treatments. The conservation of soil moisture under 10, 15, 20 gm of straw mulch was occasioned by less direct contact soil surface with air surface and less possibility of heat transfer. The greatest savings in water was under 2.7 tons/ha of straw mulch.
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Fuhrmann, Andrew. "Effect Of Rainfall Events On The Thermal And Moisture Exposure Of Underground Electric Cables." ScholarWorks @ UVM, 2015. http://scholarworks.uvm.edu/graddis/331.

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Cable ampacity analysis is generally performed assuming constant worst-state environmental conditions, which often correspond to a dry soil condition or to a condition with uniform ambient soil moisture content. The characteristic time scale of thermal variation in the soil is large, on the order of several weeks, and is similar to the time scale between rainfall events in many geographic locations. Intermittent rainfall events introduce significant transient fluctuations that influence the thermal conditions and moisture content around a buried cable both by increasing thermal conductivity of the soil and by increasing the moisture exposure of the cable insulation. This paper reports on a computational study of the effect of rainfall events on the thermal and moisture transients surrounding a buried cable. The computations were performed with a finite-difference method using an overset grid approach, with an inner polar grid surrounding the cable and an outer Cartesian grid. The thermal and moisture transients observed in computations with periodic rainfall events were compared to control computations with a steady uniform rainfall. Under periodic rainfall conditions, the temperature and moisture fields are observed to approach a limit-cycle condition in which the cable surface temperature and moisture content oscillate in time, but with mean values that are significantly different than the steady-state values.
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Schuster, Doug E. "Soil Moisture Effects on Supercellular Convective Initiation and Atmospheric Moisture in the Midwestern United States." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1462232761.

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Papadopoulos, Anastasios K. "Nitrogen and moisture distributions under subirrigated soybeans." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55520.

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A field lysimeter experiment was conducted on a sandy loam soil during the 1990 and 1991 growing seasons. The experiment tested the effects of different watertables on soybean yields, and on moisture distribution and nitrogen concentration of the soil profile. The watertable depths were 40, 60, 80, and 100 centimeters (cm).
Yields were measured in terms of number of beans per plant, number of pods per plant, number of beans per pod, and seed protein content at harvest.
Soil samples collected at depths of 30 and 70 cm from the soil surface were analyzed for moisture content and NO$ sb3 sp-$-N and NH$ sb4 sp+$-N concentrations.
The experimental results showed that controlled watertable management increased the yield and decreased soil NO$ sb3 sp-$-N levels. The best results from the watertables tested were found to be at 60 and 80 cm. This is suggested as the range of watertable depths that should be maintained for optimum soybean production.
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Books on the topic "Effect of soil moisture on"

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R, Goetze Norman, and Oregon State University. Extension Service., eds. Growing winter wheat on poorly drained soil. Corvallis, Or: Extension Service, Oregon State University, 1996.

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University), International Conference on Measurement of Soil and Plant Water Status (1987 Utah State. Proceedings of International Conference on Measurement of Soil and Plant Water Status. [Logan: Utah State University, 1987.

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International Conference on Measurement of Soil and Plant Water Status (1987 Utah State University). Proceedings of International Conference on Measurement of Soil and Plant Water Status: In commemoration of the centennial of Utah State University, July 6-10, 1987, Logan, Utah. Logan, Utah: Utah State University, 1987.

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Karvonen, Tuomo. A model for predicting the effect of drainage on soil moisture, soil temperature and crop yield. Otaniemi, Finland: Helsinki University of Technology, Laboratory of Hydrology and Water Resources Engineering, 1988.

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Hamilton, David L. Hamilton's The art of high-tech watering. Carlsbad, Calif: Hamilton's--Book Division, 1986.

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Hwang, Soo-Jin. The effects of soil moisture on the energy balance at the bare soil surface. Tsukuba, Japan: Environmental Research Center, University of Tsukuba, 1995.

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Doyle, Marie. The effect of forest-harvesting machine traffic on the aeration and pore size distribution in a blanket peat. Dublin: University College Dublin, 1997.

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Haase, Sally M. Effect of prescribed burning on soil moisture and germination of southwestern ponderosa pine seed on basaltic soils. [Fort Collins, Colo.]: Rocky Mountain Forest and Range Experiment Station, 1986.

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Sheremetʹev, S. N. Travy na gradiente vlazhnosti pochvy: (vodnyĭ obmen i strukturno-funkt︠s︡ionaloʹnai︠a︡ organizat︠s︡ii︠a︡). Moskva: Tov-vo nauch. izd. KMK, 2005.

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Ertsen, Anna Catharina Doesjka. Ecohydrological response modelling: Predicting plant species response to changes in site conditions. Utrecht: Koninklijk Nederlands Aardrijkskundig Genootschap, Faculteit Ruimtelijke Wetenschappen, Universiteit Utrecht, 1998.

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Book chapters on the topic "Effect of soil moisture on"

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Oladapo, Olukunle Olaonipekun, Leonard Kofitse Amekudzi, Olatunde Micheal Oni, Abraham Adewale Aremu, and Marian Amoakowaah Osei. "Climate Change Impact on Soil Moisture Variability: Health Effects of Radon Flux Density Within Ogbomoso, Nigeria." In African Handbook of Climate Change Adaptation, 437–52. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_201.

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AbstractClimate affects the quantity of soil moisture within the surface of the earth and this is obtained by affecting the amount of radon flux density escaping from the land surface. This chapter contains the evaluation of climate change conditions as it affects the variability of soil water for the purpose of estimating the health effects of radon flux density within Ogbomoso metropolis. The simulated soil moisture content around Ogbomoso was done for a period of 34 years using the hydrological model, Soil Water Assessment Tool (SWAT). The calibration and validation of the SWAT model was done using the daily observed soil moisture content. The simulated daily soil moisture within Ogbomoso showed good performance when calibrated and validated. A 20 years prediction of the daily soil moisture content was done using the SWAT model. The estimation of the radon flux density for the study area was obtained using the simulated soil temperature and soil moisture from the SWAT model. In this chapter, the UNSCEAR radon flux formula was used for the radon flux estimate. The result showed that the UNSCEAR radon flux formula performed well in estimating the radon flux density in the study area. The mean value of the radon flux density of 15.09 mBqm−2 s−1 falls below the estimated world average of 33 mBqm−2 s−1 by UNSCEAR stipulated for land surface. The results showed that Ogbomoso region is not prone to high risk of radon exposure to the public. The estimation of the radon flux density value suggested that there is no radiological health hazard such as lung cancer or any other respiratory tract diseases to the inhabitant of Ogbomoso, Nigeria.
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Stockmann, Uta, Ho Jun Jang, Budiman Minasny, and Alex B. McBratney. "The Effect of Soil Moisture and Texture on Fe Concentration Using Portable X-Ray Fluorescence Spectrometers." In Progress in Soil Science, 63–71. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28295-4_5.

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Hartkens, Johannes, Florian Schmalriede, Marvin Banse, Dirk C. Albach, Regine Albers, Oliver Theel, and Andreas Winter. "Detecting Effects on Soil Moisture with Guerilla Sensing." In Progress in IS, 201–18. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-46902-2_11.

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Siddiqui, Arshad K., and Trudeep N. Dave. "Effect of Placement Moisture Content on Swelling–Shrinkage Behaviour of Expansive Soil." In Lecture Notes in Civil Engineering, 203–12. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6346-5_18.

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Zhang, Chunfeng, Baoguo Zhu, Qingying Meng, Nannan Wang, Haoyuan Feng, and Ken Araya. "Planosol Soil Condition Improvement Effect of a New Plow of Three-Stage Subsoil Interval Mixing." In Lecture Notes in Civil Engineering, 177–85. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4355-1_16.

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AbstractIn this paper, a three-stage subsoil interval mixing four-gang plough (TSIMF) was manufactured to enhance the property of planosol soil in 2016. The working width is set to 2 m to obtain a low operation cost. The total draught of the TSIMF was about 100 kN, the running resistance of the tractor included. The traction force (draught) of TSIMF was determined and the soil condition improved with the TSIMF was discussed. A field test of soybean with TSIMF showed that the soil moisture was about 2% volume greater than that in the CK (subsoiler) field. The soil temperature with the TSIMF was about 1 ºC greater than the CK in the plowed layer, and the yield was 120% of the treatment of the CK. Sanjiang Plain is one of the most important commodity grain bases in China, and the albic soil accounts for about 25% of the total cultivated land. Improving the property of the albic farming land attaches great significance to the stability and increase of national grain production.
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Bell, Michael J., Antonio P. Mallarino, Jeff Volenec, Sylvie Brouder, and David W. Franzen. "Considerations for Selecting Potassium Placement Methods in Soil." In Improving Potassium Recommendations for Agricultural Crops, 341–62. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_12.

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AbstractPlacement strategies can be a key determinant of efficient use of applied fertilizer potassium (K), given the relative immobility of K in all except the lightest textured soils or high rainfall environments. Limitations to K accessibility by plants caused by immobility in the soil are further compounded by the general lack of K-stimulated root proliferation in localized soil zones enriched with K alone, compared with root proliferation due to concentrated N and P. Further, effects of K fixation reactions in soils with certain clay mineralogies and the declining concentration and activity of soil solution K with increasing clay content can also limit plant K acquisition. Variation in root system characteristics among crops in a rotation sequence and fluctuating soil moisture conditions in fertilized soil horizons in rain-fed systems increase the complexity of fertilizer placement decisions to ensure efficient K recovery and use. This complexity has resulted in extensive exploration of fertilizer K application strategies, with this chapter focusing on K applications to the soil. Issues discussed include comparisons of broadcast versus banded applications, depth of fertilizer placement, and the impacts of co-location of K with other nutrients. While research findings are often specific to the crop, soil, and seasonal conditions under which they are conducted, we attempt to identify strategies that most consistently deliver improved crop recovery and utilization of fertilizer K.
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Jikuya, Yuta, Kazunari Sako, Shinichi Ito, and Henrique Seiji Oyama. "Experimental Consideration on the Effect of Different Soil Types on Soil Moisture Dependence on Evaporation Efficiency in Unsaturated Sandy Soil." In Lecture Notes in Civil Engineering, 323–33. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-9223-2_28.

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Vagaggini, Emma, Martina Ferrini, Mauro Sassu, and Mario Lucio Puppio. "Modelling of Moisture Effect in Safety Evaluation of Soil-Interacting Masonry Wall Structures." In Computational Science and Its Applications – ICCSA 2021, 220–34. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-86960-1_16.

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Cink, J. H., and J. R. Coats. "Effect of Concentration, Temperature, and Soil Moisture on the Degradation of Chlorpyrifos in an Urban Iowa Soil." In ACS Symposium Series, 62–69. Washington, DC: American Chemical Society, 1993. http://dx.doi.org/10.1021/bk-1993-0522.ch007.

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Thierfelder, Christian, and Peter Steward. "Increasing adaptation to climate stress by applying conservation agriculture in Southern Africa." In Conservation agriculture in Africa: climate smart agricultural development, 270–83. Wallingford: CABI, 2022. http://dx.doi.org/10.1079/9781789245745.0016.

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Abstract Climate change and soil fertility decline are threatening food security in southern Africa and efforts have been made to adapt current cropping systems to the needs of smallholder farmers. Conservation Agriculture (CA) based on minimum soil disturbance, crop residue retention and crop diversification has been proposed as a strategy to address the challenges smallholder farmers face. Here we analyse the potential contributions of CA towards adaptation to the effects of climate change by summarizing data on infiltration, soil moisture dynamics and crop productivity under heat and drought stress. The data were taken in the main from CIMMYT's on-farm and on-station trial network. Data show that CA systems maintain 0.7-7.9 times higher water infiltration than the conventional tilled system depending on soil type, which increases soil moisture during the cropping season by 11%-31% between CA treatments and the conventional control treatment. This leads to greater adaptive capacity of CA systems during in-season dry spells and under heat stress. A supporting regional maize productivity assessment, analysing the results of numerous on-farm and on-station experiments, showed that CA systems will outperform conventional tillage practices (CP), especially on light-textured soils, under heat and drought stress. With higher rainfall and low heat stress, this relation was more positive towards CP and on clay soil there was no benefit of practising CA when rainfall was high. The long dry season and limited biomass production of CA systems in southern Africa require complementary good agricultural practices to increase other soil quality parameters (e.g. increased soil carbon) to maintain higher productivity and sustainability over time. This can be addressed by combinations of improved stress-tolerant seed, targeted fertilization, inclusion of tree-based components or green manure cover crops in the farming system, scale-appropriate mechanization and improved weed control strategies.
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Conference papers on the topic "Effect of soil moisture on"

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Ardekani, M. R., X. Neyt, D. Benedetto, E. Slob, B. Wesemael, P. Bogaert, C. Craeye, and S. Lambot. "Soil moisture variability effect on GPR data." In 15th International Conference on Ground-Penetrating Radar (GPR) 2014. IEEE, 2014. http://dx.doi.org/10.1109/icgpr.2014.6970416.

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Liepa, Sindija, Luize Lepiksone, Dace Butenaite, Jovita Pilecka-Ulcugaceva, and Inga Grinfelde. "EFFECT OF MOISTURE AND ORGANIC MATTER CONTENT ON N2O EMISSIONS." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023v/4.2/s19.23.

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The increasing economic activity reinforces the importance of climate change on a global scale. Together with the development of the economy and the increase in people's well-being, the emissions of greenhouse gases (GHG) which are released into the atmosphere as a result of human activities, also increase. Nitrous oxide (N2O) is one of the main greenhouse and ozone (O3) depleting gases. Seven percent of the anthropogenic greenhouse effect is nitrous oxide. From a molecular perspective, N2O has a 310-fold greater global warming potential than CO2 over a 100-year period. Organic soils are the main source of direct emissions of N2O. Emissions from organic soils account for up to 13% of total N2O emissions in the European Union, although organic soils cover only 7% of the area of the European Union. Totally 10 mixed soil samples from 10 agricultural plots were collected for the experiment. Soil from each agricultural plot was weighed into two buckets to allow measurements for two moisture regimes - wet aerobic conditions and wet anaerobic conditions. The soil was placed in 3-liter buckets, each bucket containing 1.5 kilograms. Measurements were made with the CRDS device Picarro G2508. The equipment measured the concentrations of N2O with an average interval of one second and the emission were calculated using Soil Flux software. Descriptive statistical methods, analysis of variance and Kruskal-Wallis test, and multiple pairwise comparisons using the Steel-Dwass-Critchlow-Fligner procedure were used. By analyzing the data it was obtained that the statistically significant differences (pless than 0.0001) of N2O emissions are between wet organic soil and the other groups.
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Tao, Huanzhuang, Siwen Zheng, Ying Lin, Lei Gan, Yangjian Peng, Rui Ma, and FangLi Cheng. "Effect of soil moisture on spatial variation of soil heat capacity." In 2017 5th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/icmmct-17.2017.30.

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Tian, Hongwei, Linmao Ye, and Haibo Chen. "Study on effect of soil temperature on FDR soil moisture sensor in frozen soil." In Third International Conference on Photonics and Image in Agriculture Engineering (PIAGENG 2013), edited by Honghua Tan. SPIE, 2013. http://dx.doi.org/10.1117/12.2019726.

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INOSAKO, KOJI, YOSHISUKE NAKANO, MASAHARU KURODA, and KATSUTOSHI TAKUMA. "EFFECT OF ROOT DISTRIBUTION ON CHANGE IN SOIL MOISTURE." In Proceedings of the 13th IAHRߝ;APD Congress. World Scientific Publishing Company, 2002. http://dx.doi.org/10.1142/9789812776969_0091.

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Tsegaye, Teferi D., Ramarao Inguva, Roger H. Lang, Peggy E. O'Neill, Ahmed Fahsi, Tommy L. Coleman, Wubishet Tadesse, Narayan B. Rajbhandari, Sunnie A. Aburemie, and Paolo de Matthaeis. "Microwave remote sensing of soil moisture with vegetation effect." In Remote Sensing, edited by Giovanna Cecchi, Edwin T. Engman, and Eugenio Zilioli. SPIE, 1999. http://dx.doi.org/10.1117/12.373132.

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Paloscia, S., P. Pampaloni, E. Santi, S. Pettinato, A. Della Vecchia, P. Ferrazzoli, and L. Guerriero. "Soil moisture effect on microwave emission of forest canopies." In 2008 Microwave Radiometry and Remote Sensing of the Environment (MICRORAD 2008). IEEE, 2008. http://dx.doi.org/10.1109/micrad.2008.4579461.

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Hensley, Scott, Thierry Michel, Jakob Van Zyl, Ron Muellerschoen, Bruce Chapman, Shadi Oveisgharan, Ziad S. Haddad, Tom Jackson, and Iliana Mladenova. "Effect of Soil Moisture on polarimetric-interferometric repeat pass observations by UAVSAR during 2010 Canadian Soil Moisture campaign." In IGARSS 2011 - 2011 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2011. http://dx.doi.org/10.1109/igarss.2011.6049379.

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Liepa, Sindija, Dace Butenaite, Jovita Pilecka-Ulcugaceva, Kristaps Siltumens, and Inga Grinfelde. "EFFECT OF SOIL GRANULOMETRIC COMPOSITION AND MOISTURE ON THE FORMATION OF N2O ISOTOPES." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023v/4.2/s19.24.

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Nitrous oxide (N2O) is one of important greenhouse gas (GHG) whose main sources are agricultural soils. N2O forms in soil as a result of microbial processes, reinforced by the use of nitrogen-containing fertilizers. This study will look at how the formation of N2O in soil is affected by soil moisture and soil granulometric composition. Soil N2O isotopes of ?15N? (central nitrogen position) and ?15N? (end nitrogen position) which could help to identify natural and anthropogenic sources of N2O emissions and the involvement of microorganisms in N2O production. N2O isotopes ?15NSP and ?15Nbulk can be traced or N2O produced by nitrification or denitrification. The study used total of 92 soil samples collected in 2020 and 2022. The study uses three types of agricultural soil with a different granulometric compositions. Soil from each agricultural plot was weighted into two samples, each of 1.5 kilograms to provide different humidity conditions � wet aerobic and wet anaerobic. The measurements were performed in a laboratory with the CRDS device Picarro G5131-i. The G5131-i analyzer measures nitrous oxide isotopes ?15N, ?15N?, ?15N?, and ?18O with an accuracy of 0.7 �, and N2O concentration with an accuracy of less than 0.05 ppb (all measurements are averaged over 10 minutes). The data processing did not use all the data obtained from the Picarro G5131-i, but was selected by evaluating the changes in N2O concentrations when the concentrations had stabilized. In this research, three types of soil were used, from which it can be concluded that the type of soil, its inherent physical properties and reaction to the moisture regime play an important role in the formation of N2O isotopes.
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Kulaglic, Ajla, and Burak Berk Ustundag. "Effect of soil property change on soil moisture profile estimation through data fusion." In 2015 Fourth International Conference on Agro-Geoinformatics. IEEE, 2015. http://dx.doi.org/10.1109/agro-geoinformatics.2015.7248131.

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Reports on the topic "Effect of soil moisture on"

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Han. L51585 Effects of Seasonal Variations on Requirements to Prevent Corrosion in Soils. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), December 1988. http://dx.doi.org/10.55274/r0010092.

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It has been widely recognized that the pipe-to-soil potential of pipelines under cathodic protection varies seasonally, depending primarily on the soil moisture content. In dry seasons, for instance, the pipe-to-soil potential becomes less negative so that meeting the -0.85 V (Cu/CuS04) criterion can be difficult if not impossible. The American Gas Association (AGA) through the Pipeline Research Council International, Inc. (PRCI), accordingly, initiated a research program at Battelle Columbus Division to study the effects of soil moisture content on corrosion and cathodic protection of underground pipelines. Cathodic protection is widely used for preventing corrosion in underground, buried structures. The overall objective of this research was to examine the effects of seasonal variations in soil moisture on the cathodic protection requirements to prevent corrosion of pipe steel in soils. The research consisted of four major tasks: Task 1: Characterization of the Effects of Moisture Content; consisted of a series of laboratory experiments in which the electrochemical behavior of pipe steel in soils of different moisture contents were examined. Task 2: Characterization of the Effects of Cyclic Moisture Fluctuations; was concerned with evaluating, through another series of laboratory tests, the effects of seasonal moisture fluctuations on the electrochemical behavior of cathodically-protected pipe steel. Task 3: Cathodic Protection Requirements as a Function of Moisture Content; consisted of analyzing the results of Tasks 1 and 2 and thereby assessing the cathodic protection potential and current requirements as a function of soil moisture content. Task 4: Field Tests; was concerned with verifying the laboratory results, obtained in Tasks 1, 2, and 3, in the field. This verification was done by (1) comparing and correlating the laboratory results with available field data from other PRCI funded projects and (2) performing a limited field test.
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Haase, Sally M. Effect of prescribed burning on soil moisture and germination of southwestern ponderosa pine seed on basaltic soils. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1986. http://dx.doi.org/10.2737/rm-rn-462.

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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 soil moisture observations from a COSMOS mobile sensor driven around an area near Iowa Falls, IA, with both GeoWATCH soil moisture predictions and in situ probe observations. The evaluation of the COSMOS rover data finds that the soil moisture measurements contain a low measurement bias while the GeoWATCH estimates more closely matched the in situ data. The COSMOS rover captured a larger dynamic range of soil moisture conditions as compared to GeoWATCH, capturing both very wet and very dry soil conditions, which may better flag areas of high risk for mobility considerations. Overall, more study of the COSMOS rover is needed to better understand sensor performance in a variety of soil conditions to determine the feasibility of assimilating the COSMOS rover estimates into GeoWATCH.
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Fast, J. D. The effect of regional-scale soil-moisture deficits on mesoscale atmospheric dynamics that influence fire severity. Office of Scientific and Technical Information (OSTI), September 1994. http://dx.doi.org/10.2172/10193718.

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Liu, Pei, and Chiemi Iba. Influence of Energy-saving Renovation Plan on the Hygrothermal Distribution Inside Kyo-machiya Soil Walls Considering their Moisture Buffering Effect. Department of the Built Environment, 2023. http://dx.doi.org/10.54337/aau541650556.

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Kyo-machiya are traditional townhouses in Kyoto that represent an important aspect of cultural heritage preservation. Because of the poor thermal insulation performance, they require energy-saving renovations. However, their unique soil walls possess a moisture-buffering effect that can be strongly influenced by the applied renovation plan and are expected to remain functional even after renovation. Conventional renovation methods apply an inside vapor barrier to the interior insulation to prevent condensation between the insulation and wall; however, applying this barrier may hinder the buffering effect and deteriorate the unique interior appearance of the soil wall. Therefore, we conducted a case study on the hygrothermal environment of a typical Kyo-machiya structure in winter when the moisture generated by indoor activities was adsorbed by soil walls. We used the finite difference method to divide the various renovated envelope systems into thin layers and calculated the temperature and humidity distributions. Based on these results, we propose the use of exterior insulation for renovations, owing to its excellent thermal performance. However, if the space between the adjacent buildings is insufficient, interior insulation can be applied without a vapor barrier.
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Vas, Dragos, Elizabeth Corriveau, Lindsay Gaimaro, and Robyn Barbato. Challenges and limitations of using autonomous instrumentation for measuring in situ soil respiration in a subarctic boreal forest in Alaska, USA. Engineer Research and Development Center (U.S.), December 2023. http://dx.doi.org/10.21079/11681/48018.

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Subarctic and Arctic environments are sensitive to warming temperatures due to climate change. As soils warm, soil microorganisms break down carbon and release greenhouse gases such as methane (CH₄) and carbon dioxide (CO₂). Recent studies examining CO₂ efflux note heterogeneity of microbial activity across the landscape. To better understand carbon dynamics, our team developed a predictive model, Dynamic Representation of Terrestrial Soil Predictions of Organisms’ Response to the Environment (DRTSPORE), to estimate CO₂ efflux based on soil temperature and moisture estimates. The goal of this work was to acquire respiration rates from a boreal forest located near the town of Fairbanks, Alaska, and to provide in situ measurements for the future validation effort of the DRTSPORE model estimates of CO₂ efflux in cold climates. Results show that soil temperature and seasonal soil thaw depth had the greatest impact on soil respiration. However, the instrumentation deployed significantly altered the soil temperature, moisture, and seasonal thaw depth at the survey site and very likely the soil respiration rates. These findings are important to better understand the challenges and limitations associated with the in situ data collection used for carbon efflux modeling and for estimating soil microbial activity in cold environments.
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Pradhan, Nawa Raj, Charles Wayne Downer, and Sergey Marchenko. User guidelines on catchment hydrological modeling with soil thermal dynamics in Gridded Surface Subsurface Hydrologic Analysis (GSSHA). Engineer Research and Development Center (U.S.), March 2024. http://dx.doi.org/10.21079/11681/48331.

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Climate warming is expected to degrade permafrost in many regions of the world. Degradation of permafrost has the potential to affect soil thermal, hydrological, and vegetation regimes. Projections of long-term effects of climate warming on high-latitude ecosystems require a coupled representation of soil thermal state and hydrological dynamics. Such a coupled framework was developed to explicitly simulate the soil moisture effects of soil thermal conductivity and heat capacity and its effects on hydrological response. In the coupled framework, the Geophysical Institute Permafrost Laboratory (GIPL) model is coupled with the Gridded Surface Subsurface Hydrologic Analysis (GSSHA) model. The new permafrost heat transfer in GSSHA is computed with the GIPL scheme that simulates soil temperature dynamics and the depth of seasonal freezing and thawing by numerically solving a one-dimensional quasilinear heat equation with phase change. All the GIPL input and output parameters and the state variables are set up to be consistent with the GSSHA input-output format and grid distribution data input requirements. Test-case simulated results showed that freezing temperatures reduced soil storage capacity, thereby producing higher peak and lower base flow. The report details the functions and format of required input variables and cards, as a guideline, in GSSHA hydrothermal analysis of frozen soils in permafrost-active areas.
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Quinn, Meghan. Geotechnical effects on fiber optic distributed acoustic sensing performance. Engineer Research and Development Center (U.S.), July 2021. http://dx.doi.org/10.21079/11681/41325.

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Distributed Acoustic Sensing (DAS) is a fiber optic sensing system that is used for vibration monitoring. At a minimum, DAS is composed of a fiber optic cable and an optic analyzer called an interrogator. The oil and gas industry has used DAS for over a decade to monitor infrastructure such as pipelines for leaks, and in recent years changes in DAS performance over time have been observed for DAS arrays that are buried in the ground. This dissertation investigates the effect that soil type, soil temperature, soil moisture, time in-situ, and vehicle loading have on DAS performance for fiber optic cables buried in soil. This was accomplished through a field testing program involving two newly installed DAS arrays. For the first installation, a new portion of DAS array was added to an existing DAS array installed a decade prior. The new portion of the DAS array was installed in four different soil types: native fill, sand, gravel, and an excavatable flowable fill. Soil moisture and temperature sensors were buried adjacent to the fiber optic cable to monitor seasonal environmental changes over time. Periodic impact testing was performed at set locations along the DAS array for over one year. A second, temporary DAS array was installed to test the effect of vehicle loading on DAS performance. Signal to Noise Ratio (SNR) of the DAS response was used for all the tests to evaluate the system performance. The results of the impact testing program indicated that the portions of the array in gravel performed more consistently over time. Changes in soil moisture or soil temperature did not appear to affect DAS performance. The results also indicated that time DAS performance does change somewhat over time. Performance variance increased in new portions of array in all material types through time. The SNR in portions of the DAS array in native silty sand material dropped slightly, while the SNR in portions of the array in sand fill and flowable fill material decreased significantly over time. This significant change in performance occurred while testing halted from March 2020 to August 2020 due to the Covid-19 pandemic. These significant changes in performance were observed in the new portion of test bed, while the performance of the prior installation remained consistent. It may be that, after some time in-situ, SNR in a DAS array will reach a steady state. Though it is unfortunate that testing was on pause while changes in DAS performance developed, the observed changes emphasize the potential of DAS to be used for infrastructure change-detection monitoring. In the temporary test bed, increasing vehicle loads were observed to increase DAS performance, although there was considerable variability in the measured SNR. The significant variation in DAS response is likely due to various industrial activities on-site and some disturbance to the array while on-boarding and off-boarding vehicles. The results of this experiment indicated that the presence of load on less than 10% of an array channel length may improve DAS performance. Overall, this dissertation provides guidance that can help inform the civil engineering community with respect to installation design recommendations related to DAS used for infrastructure monitoring.
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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, sulphate reducing bacteria (SRB) concentration, oxygen reduction potential (ORP), soil moisture content, soil effect on steel hydrogen permeation and electrochemical properties) - investigating the technical and economic feasibility of using commercially available field instruments for the measurement of these soil parameters to overcome limitations of laboratory testing (e.g., sample preservation and external costs) Soil sampling and testing was conducted at twenty-two dig sites in three geographic regions in the USA and Canada. On-site soil sampling and testing activities were conducted by field service providers using commercially available portable instruments. Soil samples were sent to laboratories for chemical analysis and for electrochemical characterization. The data analysis consisted of: (i) comparison of soil properties obtained at sites with and without SCC against the proposed SCC susceptibility criteria (ii) comparison of soil property data obtained in the field to those obtained through laboratory analysis (iii) comparison of soil property data obtained using different field and lab measurement techniques (iv) comparison of costs associated with performing in-field measurements to those of laboratory analysis.
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Clausen, Jay, Susan Frankenstein, Jason Dorvee, Austin Workman, Blaine Morriss, Keran Claffey, Terrance Sobecki, et al. Spatial and temporal variance of soil and meteorological properties affecting sensor performance—Phase 2. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41780.

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An approach to increasing sensor performance and detection reliability for buried objects is to better understand which physical processes are dominant under certain environmental conditions. The present effort (Phase 2) builds on our previously published prior effort (Phase 1), which examined methods of determining the probability of detection and false alarm rates using thermal infrared for buried-object detection. The study utilized a 3.05 × 3.05 m test plot in Hanover, New Hampshire. Unlike Phase 1, the current effort involved removing the soil from the test plot area, homogenizing the material, then reapplying it into eight discrete layers along with buried sensors and objects representing targets of inter-est. Each layer was compacted to a uniform density consistent with the background undisturbed density. Homogenization greatly reduced the microscale soil temperature variability, simplifying data analysis. The Phase 2 study spanned May–November 2018. Simultaneous measurements of soil temperature and moisture (as well as air temperature and humidity, cloud cover, and incoming solar radiation) were obtained daily and recorded at 15-minute intervals and coupled with thermal infrared and electro-optical image collection at 5-minute intervals.
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