thermokarst cave-in

См. также в других словарях:

• Thermokarst — refers to a land surface that forms as ice rich permafrost melts. It occurs extensively in Arctic areas, and on a smaller scale in mountainous areas such as the Himalayas and the Swiss Alps. The name is given to very irregular surfaces of marshy… …   Wikipedia

• thermokarst lake —    See cave in lake …   Lexicon of Cave and Karst Terminology

• cave-in lake —    A shallow body of water whose basin is produced by collapse of the ground following thawing of ground ice in regions underlain by permafrost.    Synonym: thermokarst lake …   Lexicon of Cave and Karst Terminology

• permafrost — /perr meuh frawst , frost /, n. (in arctic or subarctic regions) perennially frozen subsoil. Also called pergelisol. [1943; PERMA(NENT) + FROST] * * * Perennially frozen earth, with a temperature below 32 °F (0 °C) continuously for two years or… …   Universalium

• karst — karstic, adj. /kahrst/, n. Geol. an area of limestone terrane characterized by sinks, ravines, and underground streams. [1900 05; < G, generic use of Karst, name of limestone plateau north of Trieste] * * * ▪ geology       terrain usually… …   Universalium

• Pseudokarst — Karrenbildungen in Sandstein der Oberkreide der Sächsischen Schweiz Als Pseudokarst bezeichnet man geomorphologische Erscheinungen oder Teile einer Landschaft, die Eigenschaften oder Merkmale einer Verkarstung aufweisen, obwohl die sie… …   Deutsch Wikipedia

• pseudokarst —    1. Terrane with features similar to karst but formed in nonsoluble rocks, as by melting of permafrost or ground ice, collapse after mining, and by outflow of liquid lava from beneath its solidified crust [20].    2. Karst like terrane produced …   Lexicon of Cave and Karst Terminology