Inherited features ; New Jersey ; Palaeogeography ; Periglacial features ; Permafrost ; Pleistocene ; Quaternary ; Sedimentary structure ; Thermokarst ; United States of America
permafrost degraded. These structures are interpreted in the context of the current understanding of thermokarst processes operating in permafrost regions today.
Arctic Region ; Canada ; Cold area ; Delta ; Hydrochemistry ; Lake ; Northwest Territories ; Permafrost ; Thermokarst ; Tundra ; Water quality
Chemical data are presented for water from 22 lakes in small upland catchments (
) concentration of the pristine lakes is greater than the mean concentration of lakes disturbed by thermokarst slumping. Soluble materials released from degrading permafrost are transported to lakes by surface runoff, elevating concentrations in lake water
. The percentage of total basin area influenced by thermokarst is positively associated with ionic concentrations in lake water and inversely related to DOC.
Asian part of Russia ; Coastal environment ; Cold area ; Geographical information system ; Periglacial features ; Remote sensing ; Satellite imagery ; Siberia ; Thermokarst
CORONA images have been used for the mapping of periglacial features on the Bykovsky Peninsula and adjacent Khorogor Valley. Features, mapped and analysed within a geographical information system, include thermokarst depressions, thermo-erosional
valleys, thermo-erosional cirques, thermokarst lakes, thermokarst lagoons and pingos. More than 50% of the area is strongly influenced by thermally-induced subsidence. Thermokarst in the area is probably less active today than in the early-middle Holocene.
recession and thermokarst development within the failure track) differed between the localities, reflecting dissimilarity in the environmental triggers and in the degree of ground thermal disturbance.