Soil Stratigraphy Delineation by VisCPT

Ghalib, Ali M.; Hryciw, Roman D.; Susila, Endra

doi:10.1061/40505(285)5

Cited by 11 publications

(3 citation statements)

References 1 publication

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“…As an example, color is a good indicator of organic matter accumulation or mineral eluviation within the coversand. Therefore, direct imaging (Ghalib, Hryciw, & Susila, 2000; Hryciw, Ghalib, & Raschke, 1998; Raschke & Hryciw, 1997) or color logging, through laser‐induced fluorescence (Hausmann, Dietrich, Vienken, & Werban, 2016), could increase sediment discrimination potential. In addition, both techniques register the direct interaction of emitted light and the sediment passing by the sensor and do not average the sediment properties of a larger volume, as is the case with CPT‐E.…”

Section: Discussionmentioning

confidence: 99%

Cone penetration testing for extensive mapping of deeply buried Late Glacial coversand landscape paleotopography

Verhegge

Storme

Cruz³

et al. 2020

Geoarchaeology

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Late Glacial coversand landscapes are important archives of environmental change during the Pleistocene–Holocene transition as well as of Final Paleolithic human adaptation to these changes. However, extensive reconstruction of these landscapes is hampered by the fact that they are often preserved best when covered with later eolian, alluvial and/or marine sediments. These paleolandscapes are generally mapped by means of manual or mechanical coring to date, which is rather expensive and labor‐intensive. This study aims to develop a more efficient methodology to map paleolandscapes buried within the coversand and below Holocene floodplain deposits, using a case study in NW Belgium. Electric cone penetration testing is established as a primary technique for mapping the paleotopography of thin organic rich layers within the coversand, in combination with core sampling for lithostratigraphic correlation and validation. Radiocarbon dating and pollen analyses are used to investigate the chronological and biostratigraphic context, respectively. The results reveal the paleotopography of three undulating organic rich stabilization surfaces within the coversand, which were formed from the GI‐1d to GI‐1a. These paleosurfaces provide valuable contexts for studying Final Paleolithic archaeology in the coversand region specifically, but the developed methodology is applicable to Paleolithic archaeology in general.

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Section: Discussionmentioning

confidence: 99%

Cone penetration testing for extensive mapping of deeply buried Late Glacial coversand landscape paleotopography

Verhegge

Storme

Cruz³

et al. 2020

Geoarchaeology

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“…Ghalib et al (2000) demonstrated the potential of the VisCPT to explain erratic CPT readings, characterize the in-situ soil stratigraphy and detect very thin soil seams and lenses. The VisCPT consists of two parts as shown in Fig.…”

Section: Viscpt and Latbortoary Test Settingmentioning

confidence: 98%

Optical Flow Analysis of Internal Erosion and Soil Piping in Images Captured by the VisCPT

Zheng

Hryciw²

2014

Tunneling and Underground Construction

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“…Following Haralick et al (4) and other early attempts (5)(6)(7)(8) to use classic textural indices for soils, Shin and Hryciw (9) showed that the mathematical wavelet decomposition of grayscale images of relatively uniform soils yields a more robust index of grain size. Details of the wavelet decomposition are available elsewhere (e.g., 10,11), as are the procedures adapted for developing the soil grain size index (7,9).…”

Section: Wavelet Decompositionmentioning

confidence: 99%

Three-Point Imaging Test for AASHTO Soil Classification

Hryciw

Jung

2009

Transportation Research Record

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A rapid, digital image–based test has been developed for the classification of highway subgrade materials according to the AASHTO system. The test involves segregating particles in a sedimentation column, then determining the elevations at which 2.0-, 0.425-, and 0.075-mm grains (No. 10, No. 40, and No. 200 sieves, respectively) are found. If it is assumed that porosity variations throughout the column are insignificant, as established in previous studies, then the distances between these elevations translate to the percentages that pass through the various sieves. The method uses a previously developed calibration between an image wavelet decomposition index and the pixels per particle diameter. At a camera magnification of 32.5 pixels/mm, the entire grain size range from 2.0 to 0.075 mm is resolved. Thus, only a single fixed magnification lens is needed for the system. The accuracy of the new test is demonstrated by comparing the digital image–based results and conventional sieving for three soil specimens: well-graded sand, uniformly fine sand, and sandy silt. The advantages of the three-point imaging test for AASHTO soil classification over conventional sieving and hydrometer tests include reduced testing time, low noise, possibly lower equipment costs, and the elimination of airborne particles in the lab.

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Soil Stratigraphy Delineation by VisCPT

Cited by 11 publications

References 1 publication

Cone penetration testing for extensive mapping of deeply buried Late Glacial coversand landscape paleotopography

Cone penetration testing for extensive mapping of deeply buried Late Glacial coversand landscape paleotopography

Optical Flow Analysis of Internal Erosion and Soil Piping in Images Captured by the VisCPT

Three-Point Imaging Test for AASHTO Soil Classification

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