total water content (of frozen ground)
Link: http://w3id.org/permafrost/v/ipaglossary/t0376
Within: IPA Permafrost Glossary
Definition: The total amount of water (unfrozen water plus ice) contained in soil or rock (see Figure 3).
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total water content (of frozen ground)
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When no ice is present, the total water content is usually referred to as "water content" or "moisture content". The total water content of a soil or rock sample includes free water, interfacial (adsorbed) water, and water absorbed by organic material. Water of crystallization or hydration (e.g., in gypsum) is usually not included. The total water content is normally determined in one of two ways: 1. on a dry-weight basis (gravimetric total water content), as the ratio of the mass of the water and ice in a sample to the dry mass of the sample, expressed as a percentage; or 2. on a volume basis (volumetric total water content), as the ratio of the volume of water and ice in a sample to the volume of the whole sample, expressed as a fraction (or, less commonly, as a percentage). Because of the way in which it is defined, the volumetric total water content cannot exceed unity, whereas the gravimetric total water content can greatly exceed 100 percent. During thawing of a sample of frozen ground the volumetric total water content decreases, but the gravimetric total water content remains constant.
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https://doi.org/10.4224/20386561
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