Characterization of aquifers in the Vientiane Basin, Laos, using Magnetic Resonance Sounding and Vertical Electrical Sounding

Perttu, Nils; Wattanasen, Kamhaeng; Phommasone, Khamphouth; Elming, Sten-åke

doi:10.1016/j.jappgeo.2011.01.003

Cited by 29 publications

(17 citation statements)

References 27 publications

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“…Data collection and processing methods: Measurement of geo-electric resistivity uses Vertical Electrical Sounding methodSounding [20][21][22][23][24][25][26][27]. This method can determine the variation of resistivity value of horizontal layer of rock vertically.…”

Section: Methodsmentioning

confidence: 99%

Mapping of the Distribution of Aquifier in KawatunaSub-district, Mantikulore District, Palu

Rusydi¹,

Musa²,

Badaruddin³

et al. 2019

AJWSE

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Background: The condition of the land in Kawatuna Sub-district is dry, with vegetation overgrown only with shrubs. Dry land condition makes people difficult to get clean water sources for their daily needs. Purpose: This research aims to find out the existence of an aquifer and the depth of the aquifer in Kawatuna Sub-district. Method: The method used in this research is Vertical Electrikal Soundin (VES) with Sclumberger Configuration. The measurement is conducted on 10 measuring points. Data is processed using IP2WIN. Result: The result shown by the program is in the form of distribution of resistivity(ρ), thickness (h), and depth (d) of each subsurface layer. Aquifer layer is shown by the resistivity value of 32.15Ωm-48.03 Ωm and formation factor value of 2-5. This layer consists of sands, pebbles, and sandstones. The upper limit of this later is in the depth of 50.05-72.75m, while the lower limit is undetectable. Conclusion: Aquifer layer is distributed to the east and to the west. It can be seen from the depth of aquifer in the west which tends to be shallower than that in the east. Commonly, this layer is located below the impermeable clay layer.

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Section: Methodsmentioning

confidence: 99%

Mapping of the Distribution of Aquifier in KawatunaSub-district, Mantikulore District, Palu

Rusydi¹,

Musa²,

Badaruddin³

et al. 2019

AJWSE

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“…The transmissivities and water storage capacities of aquifers in the LMB have yet to be measured in a systematic way [3]. Only localized pumping tests allowed estimating aquifer hydraulic properties over a few areas [20,21]. …”

Section: Hydrogeologymentioning

confidence: 99%

Regional Assessment of Groundwater Recharge in the Lower Mekong Basin

Lacombe¹,

Douangsavanh

Vongphachanh

et al. 2017

Hydrology

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Abstract:Groundwater recharge remains almost totally unknown across the Mekong River Basin, hindering the evaluation of groundwater potential for irrigation. A regional regression model was developed to map groundwater recharge across the Lower Mekong Basin where agricultural water demand is increasing, especially during the dry season. The model was calibrated with baseflow computed with the local-minimum flow separation method applied to streamflow recorded in 65 unregulated sub-catchments since 1951. Our results, in agreement with previous local studies, indicate that spatial variations in groundwater recharge are predominantly controlled by the climate (rainfall and evapotranspiration) while aquifer characteristics seem to play a secondary role at this regional scale. While this analysis suggests large scope for expanding agricultural groundwater use, the map derived from this study provides a simple way to assess the limits of groundwater-fed irrigation development. Further data measurements to capture local variations in hydrogeology will be required to refine the evaluation of recharge rates to support practical implementations.

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“…The Mesozoic era (65 to 250 M.y.) is characterized by important marine deposits, particularly in the south of Laos were shallow lagoon conditions created evaporite layers in some places [26][27][28]. These Mesozoic sandstones, of a thickness of several hundred meters, constitute the Khorat Plateau found in Thailand that extends into Laos within lowland parts of Vientiane Capital, Vientiane, Savannakhet, and Champassak provinces.…”

Section: Geological Settingmentioning

confidence: 99%

“…Although often not mapped, small Alluvial deposits can also be found along rivers in upland areas. Alluvial aquifers in Laos can be considered as homogeneous at wide scale, although strong heterogeneities might exist over short distances, due to variable clay content, as observed in the Vientiane Plain [14,18,28].…”

Section: Group 4-alluvial Sedimentsmentioning

confidence: 99%

Regional Mapping of Groundwater Resources in Data-Scarce Regions: The Case of Laos

Viossanges¹,

Pavelic²,

Rebelo³

et al. 2017

Hydrology

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This study focuses on Laos, a landlocked nation located in SouthEast Asia with subtropical climate and highly seasonal rainfall distribution. Laos is one of the world's least developed countries, and currently witnesses an unprecedented level of development that is highly reliant on its natural resources, including groundwater. There is currently very limited data and no nationwide assessment of shallow (<30 m) groundwater resources to support sustainable management. This study provides a first step towards addressing this issue by (i) identifying the major aquifer units of the country; (ii) integrating localized data and regional maps into an assessment of the groundwater potential; and (iii) producing quantitative maps of key hydrogeological indicators. Eight aquifer units have been described and evaluated: (i) Basement aquifers, (ii) Volcanic aquifers, (iii) Schists, (iv) Paleozoic sedimentary, (v) Karsts, (vi) Limestones, (vii) Mesozoic sedimentary and (viii) Alluvial sediments. The Mesozoic sandstones and the Alluvial aquifers are the most extensive and productive hydrogeological systems in the country. The Volcanic and Karstic aquifers, although poorly known, might also have important potential. This assessment, along with the maps of quantitative aquifer indicators, provide a significant improvement in both spatial resolution and accuracy compared to previously available information. It will likely support improved management plans and the identification of areas with higher potential for groundwater development.

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Characterization of aquifers in the Vientiane Basin, Laos, using Magnetic Resonance Sounding and Vertical Electrical Sounding

Cited by 29 publications

References 27 publications

Mapping of the Distribution of Aquifier in KawatunaSub-district, Mantikulore District, Palu

Mapping of the Distribution of Aquifier in KawatunaSub-district, Mantikulore District, Palu

Regional Assessment of Groundwater Recharge in the Lower Mekong Basin

Regional Mapping of Groundwater Resources in Data-Scarce Regions: The Case of Laos

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