frozen ground or permafrost

ground ice

a general term referring to all types of ice contained in freezing and frozen ground.

gravimetric (total) water content

the ratio of the mass of the water and ice in a sample to the dry mass of the sample, commonly expressed as a percentage.

granoidic cryogenic fabric

a distinct soil micromorphology, resulting from the effects of freezing and thawing processes, in which soil particles form more or less discrete loosely packed units.

granic cryogenic fabric

a distinct soil micromorphology, resulting from the effects of freezing and thawing processes, in which soil particles form discrete loosely packed units.

geothermal heat flux

the amount of heat moving steadily outward from the interior of the earth through a unit area in unit time.

geothermal gradient

the rate of temperature increase with depth in the subsurface.

geocryology

the study of earth materials having a temperature below 0 degrees Celsius.

gelifluction

the slow downslope flow of unfrozen earth materials on a frozen substrate.

gas hydrate

a special form of solid clathrate compound in which crystal lattice cages or chambers, consisting of host molecules, enclose guest molecules.

frozen ground

soil or rock in which part or all of the pore water has turned into ice.

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