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Home / Science / Massive Iceberg Threatens Remote Island Habitat

Massive Iceberg Threatens Remote Island Habitat

Massive Iceberg Threatens Remote Island Habitat
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Science January 23, 2025 15:42

south georgia - An iceberg the size of Overijssel province is on a collision course with a remote island near Antarctica, putting penguins and seals at risk.

Massive Iceberg Approaching Remote Island

An iceberg larger than 3900 square kilometers, known as A23a, is drifting towards South Georgia, a wildlife refuge and overseas territory of the UK. The iceberg poses a threat to the habitat of penguins and seals on the island, as the breaking ice blocks their ability to hunt and find food.

The iceberg, which broke off from the Filchner Ice Shelf in Antarctica in 1986, recently detached and started moving towards South Georgia. Satellite monitoring is in place worldwide to track the movements of this massive iceberg, considered one of the oldest in the world.

Climate Change Impact and Research Opportunity

Sailors and scientists are concerned about the increasing threat of icebergs to South Georgia. The melting of icebergs is not solely attributed to climate change but is also a natural occurrence. However, with Antarctica becoming more unstable due to rising ocean and air temperatures, the frequency of iceberg break-offs is expected to rise.

For researchers, the A23a iceberg presents both a concern and a rare opportunity for study. Scientists are interested in the environmental impact of mega icebergs like A23a. In 2023, a team from the British Antarctic Survey collected water samples near the iceberg to analyze the effect of meltwater on the carbon cycle in the Southern Ocean.

Understanding how the iceberg meltwater affects the ocean's properties, nutrient levels, and carbon sequestration can provide insights into natural carbon dioxide regulation in the planet's climate system.

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