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| De Long Islands | |
|---|---|
| Name | De Long Islands |
| Location | Arctic Ocean |
| Archipelago | New Siberian Islands |
| Total islands | 6+ |
| Area km2 | 37 |
| Country | Russia |
| Admin division title | Sakha Republic |
De Long Islands are a small, remote group of Arctic islands in the Arctic Ocean off the northern coast of Siberia. The islands lie north of the Yana River delta and west of the main New Siberian Islands chain. Uninhabited and largely glaciated or tundra-covered, they have been the subject of nineteenth- and twentieth-century exploration, naval interest, and modern scientific research.
The islands form the northwesternmost extension of the New Siberian Islands and are located in the fringes of the Laptev Sea and the East Siberian Sea maritime zones. Major islets include Jeannette Island, Bennett Island, Zhokhov Island (note: Zhokhov is nearby but distinct), and several smaller landforms clustered near the Anzhu Islands group. The archipelago sits atop the Arctic continental shelf near the Mendeleev Ridge and is characterized by low relief, permafrost, and coastal cliffs facing pack ice and polynya systems. Sea routes nearby include historic passages used during searches for the Northeast Passage and routes linked to the Northern Sea Route.
The islands were encountered during nineteenth-century polar voyages connected to the Great Northern Expedition lineage and later named in honor of George W. DeLong of the Jeannette expedition. The islands figured in the era of polar heroism alongside expeditions by Adolf Erik Nordenskiöld, Fridtjof Nansen, and Roald Amundsen as searchers and surveyors mapped the high Arctic. In the early twentieth century, the archipelago attracted attention during the Russo-Japanese War period for strategic Arctic access and during World War II when northern sea lanes drew military interest from Imperial Japan and Nazi Germany reconnaissance. Soviet polar exploration and hydrographic surveys by entities such as the Hydrographic Service of the USSR and scientific programs tied to the Academy of Sciences of the USSR expanded geological and cartographic knowledge. During the Cold War, the islands were monitored in the context of Soviet Arctic strategy and Northern Fleet operations. Modern historical study links the islands to broader narratives involving the International Geophysical Year and polar sovereignty disputes adjudicated in forums influenced by the United Nations Convention on the Law of the Sea processes.
Administratively, the islands are incorporated within the Sakha Republic (Yakutia) jurisdiction of the Russian Federation following Soviet-era governance arrangements. Sovereignty claims were asserted by the Russian Empire in the late nineteenth century and reaffirmed by the Soviet Union; these claims coexist with international legal regimes such as the United Nations Convention on the Law of the Sea and diplomatic engagement with Norway, Canada, and the United States over Arctic maritime boundaries. The islands have been referenced in strategic policy documents of the Ministry of Defence (Russia) and in Arctic cooperation forums including the Arctic Council and scientific collaborations with institutions like the Russian Academy of Sciences and foreign polar institutes. Occasional visits are regulated through permissions issued by regional authorities in Yakutsk and logistical staging via Murmansk-based fleets and Arkhangelsk ports.
The insular ecosystems are typical of high Arctic biomes studied by the World Wildlife Fund and polar ecologists from institutions such as the Max Planck Society and Scott Polar Research Institute. Vegetation is dominated by sparse tundra species documented in surveys aligned with the Convention on Biological Diversity inventories, and birdlife includes migratory colonies associated with Arctic tern flyways and species monitored by programs linked to BirdLife International. Marine mammals in adjacent waters comprise populations of ringed seal, bearded seal, and occasional walrus haul-outs; cetacean sightings include bowhead whale and narwhal in broader regional studies. Permafrost thaw, coastal erosion, and pollutant deposition have been subjects of research by the Intergovernmental Panel on Climate Change-referenced projects and collaborative expeditions with universities such as University of Cambridge and Moscow State University.
The islands experience an extreme Arctic polar climate classified in the Köppen scheme and monitored in datasets from the National Snow and Ice Data Center and the World Meteorological Organization. Winters are prolonged and dominated by pack ice and polar night conditions influenced by polar vortex dynamics observed by researchers at NOAA and the Russian Federal Service for Hydrometeorology and Environmental Monitoring. Summers are short with continuous daylight during the midnight sun period, and mean annual temperatures remain well below freezing. Recent decades have shown increased seasonal variability linked to broader Arctic amplification trends assessed by the Intergovernmental Panel on Climate Change and satellite remote sensing from programs such as Copernicus and Landsat.
There is no permanent population, and economic activity is minimal; however, the archipelago has strategic and scientific value noted in studies by the International Arctic Science Committee and by resource assessments conducted by the Ministry of Natural Resources and Environment (Russia). Occasional expeditions for geology, paleontology, and climate science have been mounted by teams from State Oceanographic Institute (Russia), Smithsonian Institution, and European polar research centers. Interest in hydrocarbon and mineral potential has been raised in analyses by multinational energy corporations and mapped in studies overseen by geological surveys like the United States Geological Survey and the Russian Geological Research Institute (VSEGEI). Logistic support for research often originates from Murmansk or Tiksi and involves icebreaker escorts from fleets including vessels operated by Rosatomflot.
Category:Islands of the Arctic Ocean Category:Islands of the Sakha Republic