One of the mysteries of the English language finally explained.
A form of periglacial topography resembling karst, with hollows produced by the selective melting of permafrost.
- ‘Warming of permafrost, thawing of ground ice, and development of thermokarst terrain have been documented over the past several decades.’
- ‘Deep permafrost thawing may result in irregular surface subsidence and thermokarst pits and mounds.’
- ‘As the permafrost was deepest under this island, the depression in the mineral sediments probably indicates thermokarst formation in response to conditions created by winter snow accumulations during the island's development.’
- ‘The forest owes its appearance to an adjacent lake, one of a number of thermokarst lakes in the region.’
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