Estimation of Dielectric Properties of Clay Loam and Silty Soil With Different Salinity Levels Over Low Frequency Range

Patel, Virendrakumar N.; Chaudhary, Prahalad D.; Rana, V. A.; Gadani, Deepak H.

doi:10.18520/cs/v120/i2/414-422

Cited by 3 publications

(2 citation statements)

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“…According to Syeda et al (2020), soil dielectric properties can be seriously influenced by the mineral composition, organic matter content and salinity level of the soil. Moderate salinity has the potential of causing serious alteration in the soil electrical conductivity and dielectric properties, as it makes the soil to be more conductive; hence, increasing the EC and ɛʹ of the soil (Patel et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Study on Dielectric Properties of Rice Husk Ash Stabilized Soil

Akpomedaye,

Odoh,

Juwah

2024

Turkish Journal of Agricultural Engineering Research

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This study explored the impact of organic soil stabilizing agent on the engineering behaviors of subsoil commonly used for engineering applications in Nigeria. The soil obtained from a borrow pit and air-dried under laboratory conditions (30±5oC and 81±7% relative humidity). The dried soil sample was stabilized with rice husk ash (RHA) at the rate of 2, 4, 6, 8 and 10% (by mass of the soil) and cured for 14 days under natural conditions. A J-band microwave at a frequency of 7.0 GHz was used to measure the dielectric properties, while the standard proctor compaction test was used to determine the maximum dry density “MDD” and optimal moisture content “OMC” of the soil samples. Results obtained from the study depicted that the RHA had a significant effect on both the electrical properties of the soil. It was noted from the findings that, as the quantity of RHA used in stabilizing the soil increased from 0 to 10%, MDD values declined non-linearly from 1.61-1.42 g/cm3, while the OMC values inclined in a non-linear pattern from 14.8 - 17.1%. Similarly, the study results indicated that the soil dielectric constant and loss increased from 3.41 to 5.13 and 0.91 to 1.44 respectively, as the RHA incorporated into the soil raised by 10%. Present findings offer valuable insights into the fields of civil and electrical engineering, especially in the context of soil treatment for engineering applications.

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Section: Introductionmentioning

confidence: 99%

Study on Dielectric Properties of Rice Husk Ash Stabilized Soil

Akpomedaye,

Odoh,

Juwah

2024

Turkish Journal of Agricultural Engineering Research

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“…Different contents of sand, silt and clay particles will lead to differences in the dielectric constant of soil. Relative to the dielectric constant and temperature of solid soil, the influence of soil moisture on the dielectric constant of soil is more critical (Alharthi and Lange, 1987;Patel et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Retrieving the Soil Moisture in Bare Farmland Areas Using a Modified Dubois Model

Han

Quan-ming

2021

Front. Earth Sci.

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Soil moisture is an important parameter for global soil moisture transport, environmental evaluation, and precision agricultural research. The accurate retrieval of soil moisture in farmland areas using Synthetic Aperture Radar (SAR) depends on the accurate description of surface and SAR parameters. In these parameters, surface roughness and incidence angle are the key factors that affect the accuracy of the soil moisture retrieval model. This article proposes a modified Dubois model to retrieve soil moisture suitable for the bare surface of farmland area. The model eliminates the incidence angle parameters and uses polarization parameters to depict the surface roughness parameters in the Dubois model. To eliminate the incidence angle, the backscattering coefficients gamma0, which eliminates the effect of the incidence angles, are used to replace the sigma0. Under rain and no rain condition, the trend of backscattering coefficients (VH and VV) and cross-polarization ratio (VH-VV) of different soil texture with the soil moisture are compared. Then, the polarization parameter based on VH backscattering coefficients is used to describe surface roughness. The model is evaluated with time-series soil moisture observation data in situ of the study area. The results indicate that the modified model can retrieve soil moisture with high accuracy, and the total RMSE can reach 0.064 cm3cm−3 while the Dubois model is 0.124 cm3cm−3. Under rain and no rain condition, the retrieval accuracy of the modified model is 0.066 cm3cm−3 and 0.063 cm3cm−3. The retrieval accuracy is 0.060 cm3cm−3 and 0.067 cm3cm−3 under high and low incidence angles conditions, respectively. These results indicate that the modified Dubois model can retrieve soil moisture with high accuracy under different conditions.

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Dielectric Monitoring for understanding Herbicide Bioremediation in Microcosm experiment

Balwant,

Bramhanwade,

Mitkari

et al. 2023

Preprint

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Geophysical tools have emerged as a potential solution to monitor bioremediation of petroleum contaminated soil. Monitoring of herbicide bioremediation so far is lacking. In the present study, we formulated a geophysical approach for monitoring herbicides bioremediation in agriculture soil. Complex dielectric permittivity and conductivity was used to monitored in four microcosm setups i.e., control, herbicide contaminated soil, bioaugmentation and biostimulation. Real and imaginary dielectric permittivity showed different patterns of temporal changes for four microcosms. In the bioagumentated microcosm, the degradation was more prominent and real dielectric permittivity increased twice and achieved peak. Achieved two peaks signify two distinct phenomenon of herbicide degradation and can be further explained through conductivity spectrum and microbial count approach. The major interesting phenomenon observed during the study was shift in peak frequency of imaginary conductivity due to increased biomass during herbicide degradation process. Complex Dielectric permittivity indicated the ability to monitor bioremediation herbicide contaminated soil when it was coupled with complex conductivity method. We expect the insights of the study will be relevant to promote multidisciplinary approach of using geophysical tools for monitoring microbial signatures. The results provide insights how this non-invasive geophysical toll can revolutionize the process of understanding the decontamination process.

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Estimation of Dielectric Properties of Clay Loam and Silty Soil With Different Salinity Levels Over Low Frequency Range

Cited by 3 publications

References 0 publications

Study on Dielectric Properties of Rice Husk Ash Stabilized Soil

Study on Dielectric Properties of Rice Husk Ash Stabilized Soil

Retrieving the Soil Moisture in Bare Farmland Areas Using a Modified Dubois Model

Dielectric Monitoring for understanding Herbicide Bioremediation in Microcosm experiment

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