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Batagay Megaslump

Published: 10th May, 2024

Context

The Batagay megaslump — a 3,250-foot-wide (990 meters) is "actively growing" by a massive amount every year, as per recent findings.

Characteristics of the Megaslump:

  • Batagay megaslump, the world’s biggest permafrost crater, is located in the Russian Far East.
  • It is a retrogressive thaw slump. Retrogressive thaw slumps belong to a class of terrain types called thermokarst that occur in areas underlain by permafrost.
  • It was first observed on satellite images in 1991 after a section of hillside collapsed in the Yana Uplands of northern Yakutia, Russia.
  • The collapse exposed layers of permafrost within the remaining hillside, which contains some of the oldest permafrost in Siberia and the world, dating back up to 650,000 years.
  • From 1991 to 2018, the area increased by almost three times.

Fact Box: About Permafrost

  • Permafrost refers to any ground that remains completely frozen at or below 32°F (0°C) for at least two consecutive years.
  • It is most commonly found in regions with high mountains and in Earth's higher latitudes, particularly near the North and South Poles.
  • Composition of Permafrost: Permafrost consists of a mixture of soil, rocks, and sand that are bound together by ice.
  • The soil and ice in permafrost remain frozen throughout the year, regardless of seasonal changes in temperature.
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