Ground penetrating radar for determining volumetric soil water content; results of comparative measurements at two test sites

Overmeeren, R.A. van; Sariowan, S.V; Gehrels, J.C.

doi:10.1016/s0022-1694(96)03244-1

Cited by 179 publications

(110 citation statements)

References 12 publications

Supporting

Mentioning

107

Contrasting

Unclassified

Order By: Relevance

“…For surface GPR measurements the ground wave is the only wave that travels through the ground with a propagation path that is known a priori, and the wave velocity can be calculated directly from the traveltime. Analysing the ground wave has proven to be a fast technique that can be used to map large areas and yield reasonable results in comparison to other methods, such as TDR or gravimetric soil moisture determination (Du, 1996;Grote et al, 2003;Huisman et al, 2001Huisman et al, , 2003Overmeeren et al, 1997). There are two principle modes by which a ground wave measurement can be carried out.…”

Section: The Ground Wavementioning

confidence: 99%

Basics and Application of Ground-Penetrating Radar as a Tool for Monitoring Irrigation Process

Takahashi¹,

Igel²,

Preetz³

et al. 2012

Problems, Perspectives and Challenges of Agricultural Water Management

View full text Add to dashboard Cite

Section: The Ground Wavementioning

confidence: 99%

Basics and Application of Ground-Penetrating Radar as a Tool for Monitoring Irrigation Process

Takahashi¹,

Igel²,

Preetz³

et al. 2012

Problems, Perspectives and Challenges of Agricultural Water Management

View full text Add to dashboard Cite

“…Há discussões sobre a real profundidade de influência na propagação da onda direta (Galagedara et al, 2005). Neste trabalho empregamos a proposta de Van Overmeeren et al (1997) dada por:…”

Section: Análise Dos Dadosunclassified

Uso do atributo amplitude instantânea do dado gpr na avaliação do teor de umidade de solos e sedimentos

Prado

Barbosa

Mendes³

et al. 2011

Rev. Bras. Geof.

View full text Add to dashboard Cite

ABSTRACT. This paper presents results of a study conducted on laboratory and field in order to analyze the parameter amplitude of electromagnetic wave in qualitative assessment of soil moisture contents. We obtained empirical correlations between instantaneous amplitude of the wave, recorded by GPR -Ground Penetrating Radar, and the values of volumetric sediment moisture contents, obtained by TDR -Time Domain Reflectometer, in laboratory experiment as well as in soil samples in a field experiment. Results showed that there is a strong correlation between environmental moisture contents and instantaneous amplitude parameter of electromagnetic wave.In controlled laboratory conditions, this correlation showed a strong coefficient of determination. However, in the field experiment, the coefficient was only 0.64 due to the small amount of data used. This method is easy to implement through a processing flowchart of rapid execution, and can be used in addition to the velocity attribute usually employed in these correlations.

show abstract

“…Several researchers have used analytical models to estimate the groundwave sampling depth (Du, 1996;van Overmeeren et al, 1997;Sperl, 1999;Galagedara et al, 2005b), but these models vary significantly in their estimations (Fig. 5).…”

Section: Water Content Variability and Sampling Depthmentioning

confidence: 99%

“…As shown in Fig. 1, groundwaves are boundary waves that are confined to the air-ground interface and travel directly between the transmitting and receiving antennas in the near subsurface (van Overmeeren et al, 1997;Berktold et al, 1998). The GPR groundwave travels at the velocity of an electromagnetic wave in the near-surface soil, and the groundwave velocity can be determined by measuring the separation distance between the transmitting and receiving antennas and recording the time needed for the groundwave to travel between the antennas (Huisman et al, 2003;Galagedera et al, 2005a;Hubbard et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Soil Water Content Variability and Soil Texture using GPR Groundwave Techniques

Grote

Anger

Kelly

et al. 2010

JEEG

View full text Add to dashboard Cite

Accurate characterization of near-surface soil water content is vital for guiding agricultural management decisions and for reducing the potential negative environmental impacts of agriculture. Characterizing the near-surface soil water content can be difficult, as this parameter is often both spatially and temporally variable, and obtaining sufficient measurements to describe the heterogeneity can be prohibitively expensive. Understanding the spatial correlation of near-surface soil water content can help optimize data acquisition and improve understanding of the processes controlling soil water content at the field scale. In this study, ground penetrating radar (GPR) methods were used to characterize the spatial correlation of water content in a three acre field as a function of sampling depth, season, vegetation, and soil texture. GPR data were acquired with 450 MHz and 900 MHz antennas, and measurements of the GPR groundwave were used to estimate soil water content at four different times. Additional water content estimates were obtained using time domain reflectometry measurements, and soil texture measurements were also acquired. Variograms were calculated for each set of measurements, and comparison of these variograms showed that the horizontal spatial correlation was greater for deeper water content measurements than for shallower measurements. Precipitation and irrigation were both shown to increase the spatial variability of water content, while shallowly-rooted vegetation decreased the variability. Comparison of the variograms of water content and soil texture showed that soil texture generally had greater small-scale spatial correlation than water content, and that the variability of water content in deeper soil layers was more closely correlated to soil texture than were shallower water content measurements. Lastly, cross-variograms of soil texture and water content were calculated, and co-kriging of water content estimates and soil texture measurements showed that geophysically-derived estimates of soil water content could be used to improve spatial estimation of soil texture.

show abstract

Ground penetrating radar for determining volumetric soil water content; results of comparative measurements at two test sites

Cited by 179 publications

References 12 publications

Basics and Application of Ground-Penetrating Radar as a Tool for Monitoring Irrigation Process

Basics and Application of Ground-Penetrating Radar as a Tool for Monitoring Irrigation Process

Uso do atributo amplitude instantânea do dado gpr na avaliação do teor de umidade de solos e sedimentos

Characterization of Soil Water Content Variability and Soil Texture using GPR Groundwave Techniques

Contact Info

Product

Resources

About