Observations of palsas within the continuous permafrost zone in eastern Siberia and in Svalbard

Åkerman H. Jonas: Observations of paisas within the continuous permafrost zone in eastern Siberia and in Svalbard. Geografisk Tidsskrift 82: 45–51, Copenhagen, October 15, 1982. Observations from the area north of Chernychevsky, Yakutia, USSR (63° N 112°E) are described. In the area several paisa bogs of a »Nordic type«, containing well developed paisas of the dome, plateau and complex types, are found. In Svalbard four types of palsa-like features has been observed, including: 1) »Traditional paisas«, 2) injection ice turf mounds, 3) active layer turf mounds and 4) vegetative turf mounds. RESUMÉ Der redegøres for observationer fra østlige Sibirien og Spitsbergen af »traditionelle« palser samt andre pals-lignende former. Iagttagelserne fra Chernychevsky, Yakutien, USSR (63°N 112°E) omfatter fiere pals-moser af »nordisk type«, indeholdende veludviklede palser af dome-type, plateau-type samt complekse typer. Beliggenhed, størrelse, form, isindhold, hydrografi, vaskst og degenerationsstadier tilfredsstiller alle kriterier i pals-definitionen. Fra Spitsbergen beskrives fire pals-lignende overfladeformer. Disse morfologiske elementer er smä, ikke højere end 1 m, 6 m i diameter, og med hensyn til form ret ensartede. Fire typer er identificeret: 1) »Traditionelle palser«, 2) injection ice turf mounds, 3) active layer turf mounds og 4) vegetative turf mounds

Earth science · Geography · Permafrost · Physical geography · Climate change and permafrost · Cryospheric studies and observations · Geology · Landslides and related hazards · Oceanography

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