Tag Archives: measurement

Porosity and Permeability

Porosity is the number of pores per unit of volume in soil. Porosity may decrease through packing or compaction, increase through dilation during shear, or change when fines are transported from one area to another. Materials with higher porosity have … Continue reading

Posted in Geoscience | Tagged , , , , , , , , , | Leave a comment

Geotechnical Properties

Some physical properties of geologic materials are important in geotechnical engineering, but are not useful for geophysical interpretation. These properties are the dry strength, dilatancy plasticity, and toughness of the material. All four properties may be easily quantitatively categorized in … Continue reading

Posted in Geoscience | Tagged , , , , , , , , , , , | Leave a comment

Detecting Physical Properties (Fieldwork)

Geophysical field surveys are used to investigate the subsurface. Geophysics may utilize passive techniques, measuring and mapping changes in the ambient field, or as active techniques that measures how the geological environment responds to an input signal. In either instance, … Continue reading

Posted in Geoscience | Tagged , , , , , , , , , | Leave a comment

Characterizing Physical Properties (Labwork)

Measurements are made to determine the physical characteristics of geological materials. This is done by placing a homogeneous sample in specialized equipment designed to measure that particular property under either controlled or in-situ conditions. Extracting an intact sample is essential … Continue reading

Posted in Geoscience | Tagged , , , , , , , , | Leave a comment