These are included within the general label of thermokarst.

When a thermokarst develops, the swampy water fills it, and the trees die.

A comparison is made with man-induced thermokarst terrain in Siberia.

Gullying of the airstrip is a problem partly associated with the thermokarst activity.

The thermokarst undermines the shallow root bed of these trees, causing them to lean or fall.

This terrain, called thermokarst, can be induced by human activities or by climactic change.

As a result, the mound has started to settle down, and an incipient thermokarst pond became conspicuous in 2003.

The central plain of Faddeyevsky Island has been highly altered by thermokarst processes.

In till veneers and blankets, ground ice content is generally low, as suggested by lack of thermokarst and other permafrost features.

Thawing permafrost can lead to a landscape of irregular depressions (thermokarst) due to subsiding soils.

The hole, with doomed saplings and sod lying in the bottom, is a thermokarst: a sinking plot of ground caused by thawing permafrost.

Active thermokarst processes occur on the hummocky and rolling terrain of eastern Banks Island, in the western Canadian Arctic.

This may form a remnant of an initial post-Buckland surface, degraded by multiple cycles of thermokarst during the period 14 000 to 8000 years BP.

The underlying soil of this damp Arctic coast is thick, solid permafrost, covered in summer with thermokarst "thaw lakes" of melted ice.

These times support dates of marine transgression predicted by the sea-level curve, but the sites may have been occupied by thermokarst lakes prior to transgression.

Teshekpuk Lake is the largest lake in Arctic Alaska, the largest thermokarst lake in the world.

• Periglacial features such as polygonal ground, ice wedges, thermokarst and gelifraction phenomena, and thaw slides were described and photographed.

The disturbed terrain adjacent to the airstrip at Sachs Harbour is an example of man-induced thermokarst processes operating within the High Arctic environment.

In parts of Alaska, scientists believe the number of "thermokarst" lakes—formed when terrain collapses over thawing permafrost and fills with meltwater—may have doubled in the past three decades.

"Development of Thermokarst Lakes During the Holocene at Sites Near Mayo, Yukon Territory."

Ground-ice slumps, thaw lakes and irregular depressions (thermokarst) resulting from the melt and erosion of ice-rich permafrost constitute a further group of related periglacial landforms.

The researchers will monitor the growth of this vegetation around newly formed thermokarst features and use experimental field plots to test how conditions mimicking such features affect which species will thrive.

It distorts the Earth’s surface, too, creating a landscape of domes and pits known as thermokarst because of its resemblance to the karstic terrain of limestone-rich parts of the world.

Radiocarbon dates of approximately 8500 BP, 3900 BP and 2300 BPP have been obtained, indicating several periods of thermokarst activity during the Holocene.

Holocene Environmental History of Thermokarst Lakes on Richards Island, Northwest Territories, Canada: Thecamoebians as Paleolimnological Indicators.