Electrical resistivity and TDR methods for soil moisture estimation in central Italy test-sites

Calamita, Giuseppe; Brocca, Luca; Perrone, Angela; Piscitelli, S.; Lapenna, Vincenzo; Melone, F.; Moramarco, Tommaso

doi:10.1016/j.jhydrol.2012.06.001

Cited by 95 publications

(65 citation statements)

References 58 publications

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“…This gives better results in determining target location and geometric features (Soldovieri et al 2011). The EM and ERT methods have been largely applied in agriculture and environmental studies, from monitoring of saltwater intrusion in coastal areas to the diffusion of pollutants in groundwater; the time-dependent change of soil water content; the surveying of plant root biomass (Amato et al 2008); the analysis of water-soil-root plant interactions and many other significant applications (Werban et al 2008;Calamita et al 2012). The ARP is increasingly used in precision farming (viticulture) giving contributes for improving the management strategies aimed to improve and enhance the quality of the crop production (Rossi et al 2013a).…”

Section: Principles Of Geophysical Techniques For Agriculturementioning

confidence: 99%

Geophysical Techniques for Plant, Soil, and Root Research Related to Sustainability

Bitella

Rossi

Loperte

et al. 2015

The Sustainability of Agro-Food and Natural Resource Systems in the Mediterranean Basin

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The sustainable management of human activities, from production to waste disposal and the cycling of finite resources, is one of the great challenges of research for the coming decades, stemming from societal needs and the growing awareness of environmental mechanisms.Research on geophysical methods provides an interdisciplinary approach to such challenges by addressing the need for techniques to assist in designing and monitoring strategies for sustainability in agriculture and other environment-related sciences.In the past few decades, technological advances have produced new tools or have improved existing techniques for near-surface geophysical investigation in a robust, cost-effective, and noninvasive way. Experimental results have proved that soil physical properties thus detected and mapped can be used as a proxy of physical, chemical, and biological features relevant for the appropriate management of soils, based on their behavior, spatial variability, and time dynamics.This chapter reviews principles of the techniques and reports selected research results on environmental and agronomic research.

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Section: Principles Of Geophysical Techniques For Agriculturementioning

confidence: 99%

Geophysical Techniques for Plant, Soil, and Root Research Related to Sustainability

Bitella

Rossi

Loperte

et al. 2015

The Sustainability of Agro-Food and Natural Resource Systems in the Mediterranean Basin

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“…Time domain reflectometry (TDR) and capacitance probes are commonly used to measure soil moisture in shallow soils (Schwartz et al, 2008;Calamita et al, 2012;Beff et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Vegetation Effects on Soil Moisture and Groundwater Recharge in Subtropical Coastal Sand Dunes

Fan¹

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Vegetation can potentially have a strong influence on the water budget and hydrological processes in vegetated ecosystems due to canopy rainfall interception and the partitioning of rainfall into throughfall and stemflow, as well as root water uptake from the vadose zone or groundwater table. This study aims to explore the potential effects of vegetation on soil moisture dynamics and groundwater recharge in a subtropical coastal area of eastern Australia. This area is characterized by highly permeable sands, intense summer rainfall events and three typical vegetation covers (exotic pine plantation, native woodland and grassland).First of all, the spatial variability of both throughfall and stemflow at the soil surface was investigated in a 12-year-old managed pine plantation over one year on Bribie Island using tipping-bucket rain gauges. Rainfall loss by canopy interception and subsequent evaporation from this pine plantation and a native banksia woodland were also quantified and compared using field measurements and two analytical models of rainfall interception.In addition, the potential hydrological impacts of changes in vegetation cover in this shallow sandy groundwater system (depth to water table < 2 m) was evaluated by estimating groundwater recharge and discharge by evapotranspiration (ET g ) under the three contrasting vegetation covers over a 2-year period using the water table fluctuation method and the White method, respectively.To further monitor the actual water percolation processes in deep sand dune profiles (depth to water table > 10 m), spatial patterns and seasonal dynamics of root-zone soil moisture were quantified under three contrasting vegetation covers on North StradbrokeIsland by combining two geophysical techniques: surface electric resistivity tomography (surface ERT) and spatial time domain reflectometry (spatial TDR). Based on the field investigations of rainfall and root distributions at the under-canopy and inter-canopy zones, spatial distributions of vadose zone soil moisture and deep drainage in this subtropical coastal forest overlying deep sand dunes were finally simulated using HYDRUS models.On the Bribie Island sites, the highest throughfall was found on the east side of the tree trunks (~85% of gross rainfall) and the lowest in the midway between tree rows (~68% of gross rainfall) in the pine plantation. These spatial patterns persist for around 84% of recorded rainfall events. This is explained by canopy interception of the inclined rainfall resulting from the prevailing easterly wind direction throughout the experiment. Annual ii rainfall interception loss in the banksia woodland was lower (~16% of gross rainfall) than that in the pine plantation (~23% of gross rainfall) due to the lower canopy storage capacity and higher aerodynamic resistance of the banksia woodland. The RGAM and WiMo models predicted the interception losses from these forest stands reasonably well.The average annual gross recharge was largest at the sparse grassland site, followed by the exotic...

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“…Nevertheless, the method is time-consuming and destructive. Several researchers (3)(4)(5)(6)(7)(8)(9) have claimed that some of the SWC estimation methods use physical properties, such as electrical resistance, temperature, capacitance, dielectric permittivity or spectrometry. Even though the methods are efficient, they are relatively expensive, which limits their widespread application.…”

Section: Introductionmentioning

confidence: 99%

Performance of Soil Water Content Using Ground Penetrating Radar with Different Antenna Frequencies

Karim¹,

Kamaruddin²,

Hasan³

2018

IJET

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Accurate measurements of Soil Water Content (SWC) with applicable and relevant support are essential in many fields of earth and soil engineering research. Ground Penetrating Radar (GPR) is a geophysical tool that measures and provides accurate results for determination of the SWC. To prove the accuracy of SWC measurement using GPR, a field survey was performed in peat soil. This paper presents a fieldwork survey with the aim of assessing the SWC measurement using GPR. The survey work was conducted at Johor Bharu using different antenna frequencies (250 and 700 MHz). Five profiles, which is 5m by 5m in length, were scanned along an eastwest direction with a common offset at an equal spacing of 1m. To measure the SWC using GPR, the researchers used the velocity from the GPR's signal from the receiving antenna to the soil. Statistical analysis was carried out based on the dielectric permittivity and SWC. Schaap's equation and Roth's equation were used to distinguish the relative dielectric permittivity of the soil to SWC. The results of this study show the linear function, for the measured SWC. The validation graph shows that at a frequency of 250 MHz, the depth of penetration was greater compared to the frequency of 750 MHz. These results, suggest that a higher frequency will give higher resolution but lower depth penetration.

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Electrical resistivity and TDR methods for soil moisture estimation in central Italy test-sites

Cited by 95 publications

References 58 publications

Geophysical Techniques for Plant, Soil, and Root Research Related to Sustainability

Geophysical Techniques for Plant, Soil, and Root Research Related to Sustainability

Vegetation Effects on Soil Moisture and Groundwater Recharge in Subtropical Coastal Sand Dunes

Performance of Soil Water Content Using Ground Penetrating Radar with Different Antenna Frequencies

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