Bolshoy Lyakhovsky Island

Bolshoy Lyakhovsky Island is the largest of Russia’s Lyakhovsky Islands, in the New Siberian Islands archipelago between the Laptev and East Siberian seas.

New Siberian Islands: A Russian Arctic archipelago between the Laptev and East Siberian seas. Bolshoy Lyakhovsky is one of this archipelago’s southern islands.
Thermokarst: Uneven terrain formed when ice-rich permafrost thaws and the ground subsides. Thawing ground creates subsidence features across the island’s ice-rich deposits.
Dmitry Laptev Strait: A strait separating the Lyakhovsky Islands from the Siberian mainland. Its coastal exposures connect island permafrost research with nearby mainland deposits.
Permafrost carbon cycle: The movement and transformation of carbon stored in frozen soils as they thaw. Thawing island deposits expose ancient carbon to microbial decomposition.
Lyakhovsky Islands: An island group in the southern part of the New Siberian Islands archipelago. Bolshoy Lyakhovsky is the group’s largest island.
Coastal erosion: The wearing away of shorelines by waves, currents, and other coastal processes. Waves and thawing permafrost erode the island’s vulnerable Arctic coasts.
Batagay crater: A large retrogressive thaw slump in permafrost in northeastern Siberia. It offers a mainland comparison for thaw-driven landscape change on the island.
Methane emissions: The release of methane into the atmosphere from natural or human sources. Waterlogged thaw zones can release methane from decomposing organic matter.
Laptev Sea: A marginal sea of the Arctic Ocean north of Siberia. This sea lies west of Bolshoy Lyakhovsky Island.
Ice complex: A permafrost deposit containing abundant ground ice and frozen sediments. The island’s Yedoma deposits are part of this ice-rich permafrost formation.

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Maly Lyakhovsky IslandRelated: It lies immediately south of Maly Lyakhovsky across the Sannikov Strait.