Use of the Electromagnetic-Induction Meter (EM38) as a Tool in Managing Salinisation

McKenzie, R. C.; George, R.J.; Woods, Shelley A.; Cannon, Mark; Bennett, D L

doi:10.1007/s100400050110

Cited by 38 publications

(24 citation statements)

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“…Salinity levels increased from south to north in area B, indicating that the northern portion is suffering from a more pronounced salinity problem and that the southern part is slowly being reclaimed. Area C showed high variability in soil salinity (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) dS/m). When compared with maps generated in previous years, soil salinity levels decreased in areas A and B, suggesting the benefits of the sequential drainage reuse practices.…”

Section: Soil Salinity Assessmentmentioning

confidence: 99%

“…Traditional measurement methods, such as four-electrode probes and soil sampling, require extensive data collection and laboratory analyses that are very slow, labour-intensive, and expensive [10]. The electromagnetic (EM) induction technique has become a very useful and cost-effective tool to monitor and diagnose soil salinity over large areas, because it allows for rapid and aboveground non-invasive measurements [7].…”

Section: Introductionmentioning

confidence: 99%

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Assessing canal seepage and soil salinity using the electromagnetic remote sensing technology

Zoldoske¹

2006

WIT Transactions on Ecology and the Environment, 96

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Canal seepage and soil salinity are two major problems in irrigated areas of California's Central Valley, USA. Seepage is very common throughout the vast network of irrigation canals found in California. Most of these canals are earthen structures, where seepage contributes to the loss of millions of litres of water annually. Salinity problems are attributed to saline parent material, clayey soils, intensive irrigation, shallow water tables, and inadequate drainage that prevents the leaching of soluble salts. Several irrigation management practices, including sequential reuse of drainage waters within farm boundaries, are currently being tested in the region. Such practices are expected to reduce drainage volume, conserve irrigation water, and contribute to soil reclamation. Canal seepage and soil salinity can be assessed very accurately using the electromagnetic (EM) remote sensing technique. When coupled with a GPS and data logging capabilities, a mobilized EM system can provide automated and geo-referenced measurements over large areas. The study objectives were to locate seepage along irrigation canals and assess soil salinity in agricultural fields using the EM approach. Calibration of the EM data was performed following soil sampling. Samples were analyzed for electrical conductivity, texture, and moisture. Surface maps describing spatial distribution of these parameters were generated using GIS. The study suggested that the location of seepage could be detected rapidly and cost-effectively with the EM meter. The salinity assessment survey indicated that soil salinity levels ranged from 1 to 39 dS/m, with high spatial variability observed in most areas. Elevated salinity values were associated with poor drainage management. Growers and water agencies can utilize information from this study to develop water management and conservation strategies.

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Section: Soil Salinity Assessmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessing canal seepage and soil salinity using the electromagnetic remote sensing technology

Zoldoske¹

2006

WIT Transactions on Ecology and the Environment, 96

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“…Ground-based electromagnetic (EM) surveys have been used widely at the farm scale (Lesch et al, 1992; www.elsevier.com/locate/jag International Journal of Applied Earth Observation and Geoinformation 9 (2007) 91-102 McKenzie et al, 1997;Triantafilis et al, 2000;Sudduth et al, 2001;Broadfoot et al, 2002). Conductivity data to 6 m depth may be produced across large areas although acquisition is time-consuming, especially in rough terrain or under dense vegetation.…”

Section: Introductionmentioning

confidence: 99%

Airborne electromagnetics supporting salinity and natural resource management decisions at the field scale in Australia

Cresswell

Mullen²,

Kingham³

et al. 2007

International Journal of Applied Earth Observation and Geoinfor

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“…Readings were taken in the vertical (denoted EM v ) and horizontal (denoted EM h ) modes. The EM v reading penetrates to a depth of approximately 1.2-1.5 m, while the EM h reading penetrates to approximately 0.60-0.75 m (McKenzie et al, 1997;McNeill, 1992). Preliminary EM38 readings were taken in February 1999 in field 1 using a regular grid pattern (60 m × 60 m) from 226 locations and in April 2000 in field 2 using a regular grid pattern (60 m × 60 m) with 195 locations.…”

Section: Em38 Surveymentioning

confidence: 99%

Development of practical site-specific management methods for reclaiming salt-affected soil

Horney

Taylor²,

Munk³

et al. 2005

Computers and Electronics in Agriculture

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Use of the Electromagnetic-Induction Meter (EM38) as a Tool in Managing Salinisation

Cited by 38 publications

References 0 publications

Assessing canal seepage and soil salinity using the electromagnetic remote sensing technology

Assessing canal seepage and soil salinity using the electromagnetic remote sensing technology

Airborne electromagnetics supporting salinity and natural resource management decisions at the field scale in Australia

Development of practical site-specific management methods for reclaiming salt-affected soil

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