Effect of Source Characteristics on the Resolution of Dispersion Image from Active MASW Survey

Taipodia, Jumrik; Baglari, Dipjyoti; Dey, Arindam

doi:10.1007/s40098-018-0335-1

Cited by 13 publications

(4 citation statements)

References 29 publications

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“…Heavy source weight (i.e., 7 kg sledgehammer) provides a high amplitude energy band [27,28]. Steel plate was used as an impact absorber to increase energy accumulation on the higher frequencies generated for better interpretation of the shallow profile [28,29]. However, to minimise the risk of the source plate penetrating the peat ground during shot impact as reported previously [28,30], a custom steel plate with a thinner size and smaller weight was used.…”

Section: Sedimentary Rocksmentioning

confidence: 99%

Investigating Peat Soil Stratigraphy and Marine Clay Formation Using the Geophysical Method in Padas Valley, Northern Borneo

Mohamad

Kasbi

Baba

et al. 2021

Applied and Environmental Soil Science

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A geophysical survey including electrical resistivity tomography (ERT), induced polarization (IP), and seismic refraction (SR) was carried out to estimate peatland thickness in Beaufort District, Eastern Malaysia. Peatlands are important natural carbon storage and play a key role in the global carbon cycle. The ERT and IP studies were performed along three profiles over different peat thicknesses using Schlumberger configuration. The SR survey was carried out using vertical geophones along the same profiles. The peat soil material was characterized by low seismic velocity and high resistivity. Our results show that ERT and IP methods were able to clearly detect the interface between the peat soil and marine clay underneath. These layers differ greatly in geoelectrical characteristics showing clear contrast, thus enabling the delineation of peat soil stratigraphy, while the SR image obtained was not able to determine the base of the peat soil layer as the stiffness difference on the transition layer was very small. Overall, it was concluded that the ERT and IP method offer a useful alternative in delineating the peat soil stratigraphy. The combined application of ERT and IP method with the conventional boring method meets the demand for large volume peat stratigraphy mapping, which, moreover, has various ecological conditions and undulating strata.

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Section: Sedimentary Rocksmentioning

confidence: 99%

Investigating Peat Soil Stratigraphy and Marine Clay Formation Using the Geophysical Method in Padas Valley, Northern Borneo

Mohamad

Kasbi

Baba

et al. 2021

Applied and Environmental Soil Science

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“…The percentages of soil treated with magnesium hydroxide and calcium hydroxide particles that showed hydraulic conductivity after seven weeks of permeability were 84.14% and 98.70%, respectively, compared to untreated soil. Magnesium hydroxide-treated soils experienced a 14day rise in UCS of 148.05%, whereas calcium hydroxide-treated soils experienced an increase of 180.17% [29], as shown in Figures 19 to 21 Taipodia and Dutta [30] examined how clay's characteristics were affected by nano-calcium dichloride, nano-calcium oxide, and nano-potassium nitrate particles and concluded that the use of nanoparticles increased shear strength, decreased permeability, and decreased compressibility.…”

Section: Resultsmentioning

confidence: 99%

A Review Study on the Effect of Nanomaterials and Local Materials on Soil Geotechnical Properties

Adnan,

Al Waily,

Jawad

2023

E3S Web Conf.

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Considerable strides have been made in nanotechnology in recent years, with many nanotechnology-based achievements in the geotechnical-engineering. It seems certain that nanoparticles would be widely utilized to develop the geotechnical qualities for soils in modern applications. This study covers prior research on using nanomaterials in soil, their characteristics, and their influence on soil engineering. It seems certain that nanoparticles will be widely utilized to develop soil geotechnical properties in the near future. The application of current technologies to improve soil resistance requirements has resulted in the stability of many soil types with formation issues. This study analyzes the use of some nanomaterials and lime as additives or stabilization materials to improve soil resistance properties by geotechnical researchers. Researchers have demonstrated that adding local materials such as lime enhances the properties of soil. Still, a remarkable and interesting percentage of improvement was observed when adding nanoparticles to the soil by improving its engineering qualities as well as those of some other components, such as lowering stability and compressibility, raising density, and raising shear resistance.

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“…A 7 kg sledgehammer was used as impact sources with rubber plate as the impact absorber. As mentioned by Basri et al [20] and Taipodia et al [21], rubber plate provides higher signal to noise ratio particularly at the lower frequencies and minimised the plate penetration during impact. The number of stacking was set to 5 to ensure sufficient energy obtained and the sensor arrangement was fixed with the constant linear arrangement.…”

Section: Methodsmentioning

confidence: 91%

The Optimum Field Configuration for Active MASW Survey on Peat Soil

Basri¹,

Zainorabidin²,

Talib³

et al. 2020

IJIE

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The application of the MASW method on engineering investigation required optimization of the field configuration to ensure high quality dispersion image for reasonable shear wave velocity profile estimation. The limited investigation with respect to peat soil condition has motivated the study to determine the optimum field configuration for peat soil. The challenging characteristics of peat soil including high void ratio, compressibility, water content and low shear strength further complicates the determination of optimum field configurations. The study focused on the determination of optimum field configurations for active MASW method which includes the receiver spacing, source offset, sensor frequency and sampling interval. The results obtained shows that, the optimum receiver spacing to obtain high signal to noise ratio dispersion image was 1 meter. Smaller receiver spacing causes domination of higher modes and wide bandwidth, while longer receiver spacing causes significant drop in signal to noise ratio governed by rapid energy dissipation with distance. For the source offset, the distance of half the total spread length (X1 = L/2) provides the best resolution and minimised near-field and far-field effect. While, 4.5 Hz sensor frequency and sampling interval between 100 to 250 s provides sufficient low frequencies for deeper depth investigation and denser data. Overall, the influence of receiver spacing, source offset and sensor frequency on the dispersion image resolution was significant.

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Effect of Source Characteristics on the Resolution of Dispersion Image from Active MASW Survey

Cited by 13 publications

References 29 publications

Investigating Peat Soil Stratigraphy and Marine Clay Formation Using the Geophysical Method in Padas Valley, Northern Borneo

Investigating Peat Soil Stratigraphy and Marine Clay Formation Using the Geophysical Method in Padas Valley, Northern Borneo

A Review Study on the Effect of Nanomaterials and Local Materials on Soil Geotechnical Properties

The Optimum Field Configuration for Active MASW Survey on Peat Soil

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