Results 151 to 160 of about 9,145 (212)

Shear‐wave studies in glacial till

GEOPHYSICS, 1998
Within a high‐resolution shallow reflection survey program in Saskatchewan, Canada, S-waves were produced using a single seismo‐electric blasting cap and were found to be distinguishable from surface wave phases. The local glacial deposits have average velocities of 450 m/s.
Bradley J. Carr, Zoltan Hajnal, Arnfinn Prugger   +2 more
openaire   +1 more source

Shear wave studies in Glacial Till

SEG Technical Program Expanded Abstracts 1996, 1996
Within a high‐resolution shallow reflection survey program in Saskatchewan, Canada, S-waves were produced using a single seismo‐electric blasting cap and were found to be distinguishable from surface wave phases. The local glacial deposits have average velocities of 450 m/s.
Bradley J. Carr, Zoltan Hajnal, Arnfinn Prugger   +2 more
openaire   +1 more source

The Fracture Porosity of Glacial Till

Canadian Journal of Earth Sciences, 1975
The effective porosity of fractured till is obtained using two independent methods. The first method is based on tritium tracer studies, hydraulic head measurements and digital model simulations, while the second method is the mathematical evaluation described by Snow (1968) for fracture porosities of consolidated rock.
openaire   +1 more source

Electrokinetic remediation of metal contaminated glacial tills

Geotechnical & Geological Engineering, 1997
This paper presents the results of an experimental investigation which studied the feasibility of using the electrokinetic process to remediate contaminated clays of glacial origin, otherwise known as glacial tills. An overview of the electrokinetic phenomena, as well as previously performed laboratory and field investigations, is first presented.
K. R. Reddy, A. B. Shirani
openaire   +1 more source

Modeling pumping tests in weathered glacial till

Journal of Hydrology, 1993
Three multiple well pumping tests were performed in low-permeability Wisconsin-age weathered glacial till in Iowa, USA. A radial flow model based on the Dupuit assumptions and a radial and vertical flow model were used to estimate flow parameters. A numerical solution to the Dupuit equation and an analytical solution to the Dupuit equation using Jacob ...
Kenneth B. Edwards, LaDon C. Jones
openaire   +1 more source

Recession Rate of Glacial Till Bluffs

Journal of Waterway, Port, Coastal, and Ocean Engineering, 1987
The relationship between waves and recession rate of cohesive bluff shorelines consisting of glacial till is explained in physical terms as a function of wave-foreshore interaction. An equation is derived based on wave energy dissipation rate in the breaking zone and on wave shear stresses offshore of the breaking zone.
openaire   +1 more source

Migration of Landfill Leachate Through Glacial Tills

Groundwater, 1977
ABSTRACT To evaluate the potential of natural clay minerals for attenuating and preventing the pollution of water resources by landfill leachates, leachate was collected by anaerobic techniques from the 15‐year old Du Page County sanitary landfill near Chicago, Illinois, and was passed through 44 laboratory columns that contained ...
Keros Cartwright, Robert A. Griffin, Robert H. Gilkeson   +2 more
openaire   +1 more source

Azimuthal Resistivity To Characterize Fractures In A Glacial Till

15th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2002
Azimuthal resistivity was used to characterize fractures in a glacial till at the King site, near Birsay SK. The King site is a hydrogeological test site where the presence of fractures has been identified, but the fracture orientation was not previously known.
Mark Boris, Jim Merriam
openaire   +1 more source

Subsurface Lateral Transport in Glacial Till Soils

Transactions of the ASABE, 2007
An understanding of water and solute flow patterns in a landscape is necessary to describe water and nutrient use by crops, as well as potential nutrient contamination of groundwater, tile water, and streams. Subsurface water and solute movement in a landscape can occur laterally as well as vertically in the soil, especially in gently rolling ...
openaire   +1 more source

Pressure Meter Testing in Glacial Till

2010
Some problems of measuring undrained strength and deformation properties for glacial till are presented. These soils are stiff and have low compressibility. Because of their strong fissured character, a satisfactory sampling for laboratory testing presents great practical problems.
openaire   +1 more source