The Combined EMT/VES Geophysical Method for Siting Boreholes

Beeson, S.; Jonesa, Charles R. C.

doi:10.1111/j.1745-6584.1988.tb00367.x

Cited by 53 publications

(18 citation statements)

References 4 publications

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“…DC results are excellent if borehole data are used prior to the interpretation. For that reason, electromagnetic methods (EM) are mostly used to obtain general information at relatively shallow depths over large areas (Beeson and Jones, 1988).…”

Section:    mentioning

confidence: 99%

Monitoring of Seawater Intrusion in Coastal Aquifers: Basics and Local Concerns

Melloul

Goldenberg²

1997

Journal of Environmental Management

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Section:    mentioning

confidence: 99%

Monitoring of Seawater Intrusion in Coastal Aquifers: Basics and Local Concerns

Melloul

Goldenberg²

1997

Journal of Environmental Management

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“…This development usually makes interpretations difficult. However, with appropriate complementary method(s) and application of appropriate models (Benson and Jones, 1988), the technique can be best employed for depth determination and choice of drilling of successful water wells and other geoengineering and environmental utilities.…”

Section: Introductionmentioning

confidence: 99%

DC resistivity survey for the assessment of groundwater potential in Oba Akoko, Southwestern, Nigeria

Mohammed¹

2016

Glo Jnl Pure Appl Sci

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A DC resistivity survey of Oba Akoko in southwestern Nigeria was carried out over the three major rock units of the Migmatites; granite, granite-gneiss and grey-gneiss underlying the study area. The objectives of the study included the delineation of the subsurface geological/geoelectrical sequences and aquifer unit(s) and types with a view to assessing prospective site for groundwater potential rating of the area. Fifty nine Schlumberger vertical electrical sounding data were acquired. The inter-electrode spacing (AB/2) varied from 1 to 100 m with maximum spread length of 200 m. The ground resistance measurements were made with ABEM SAS 1000 resistivity meter. Seven distinctive sounding curve types were obtained from the data inversion/interpretation techniques. These included H, A, HA, AA, HK, QH and AK curve types. Maximum of four geological/geoelectric layers were delineated; the top-soil, clay/clayey sand/sandy clay weathered basement, partly weathered/fractured basement and fresh basement with resistivity values that ranged from 20 -360 Ωm, 25 -850 Ωm, 476 -979 Ωm and infinity ohm-m respectively, while the thickness values ranged from 0.4 -3.8 m, 1 -17 m, 4 -17 m respectively, and depth to rock head of 24.9 m. Isopach maps of the weathered layer and overburden showed spatial distribution of the thickness with a relatively thick weathered/fractured basement not less than 10 m as basement depressions or pockets of closures. The thickness pattern showed uneven basement bedrock interface. It may, therefore, be concluded that groundwater potential of the study area is generally low arising from shallow depth to basement or thin regolith and few fracture density in places in the area. The localized fractured bedrocks and weathered basement columns/basement depressions arising from the deep weathering of the parent rocks may have constituted the main sustainable aquifer/groundwater storage units for consumption via borehole groundwater abstraction in the area.

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“…These include remote sensing (Lillesand & Kiefer, 1994) geophysical methods (Beeson & Jones, 1988;McNeill, 1991;Carruthers & Smith, 1992) and geomorphological studies (Taylor & Howard, 2000). Geophysical surveys using combined resistivity and ground conductivity (EM) surveys have often been found useful in siting wells and boreholes (see Table 3).…”

Section: Precambrian Basementmentioning

confidence: 99%

African hydrogeology and rural water supply

MacDonald¹,

Davies²,

Calow³

2008

IAH - Selected Papers on Hydrogeology

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The widespread development of groundwater is the only affordable and sustainable way of improving access to clean water and meeting the Millennium Development Goals for water supply by 2015. Current approaches to rural water supply, in particular demand driven approaches and decentralisation of service delivery have many benefits to the overall efficacy and sustainability of water supplies, however, problems arise when projects do not take into

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The Combined EMT/VES Geophysical Method for Siting Boreholes

Cited by 53 publications

References 4 publications

Monitoring of Seawater Intrusion in Coastal Aquifers: Basics and Local Concerns

Monitoring of Seawater Intrusion in Coastal Aquifers: Basics and Local Concerns

DC resistivity survey for the assessment of groundwater potential in Oba Akoko, Southwestern, Nigeria

African hydrogeology and rural water supply

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