Researchers Identified Vulnerable Antarctic Ice Basin
Scientists warned that East Antarctica's Wilkes Subglacial Basin could contribute to major global sea level rise.
Updated on Sept. 29, 2026 in Environmental
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Researchers have pinpointed the Wilkes Subglacial Basin in East Antarctica as a highly vulnerable region that contains enough ice to raise global sea levels by four metres. The team is calling for a major international effort to study the area due to concerns that current melting is outpacing previous scientific expectations.
Why it matters
Current data is insufficient to understand the specific conditions that could trigger large-scale melting in the basin. Studying this region is critical because its ice sheet retreated during the Mid-Pliocene period, a time when atmospheric CO2 levels were lower than today.
The Wilkes Subglacial Basin in East Antarctica holds enough ice to raise global sea levels by four metres. Researchers current observations note atmospheric CO2 concentrations of 426 parts per million, surpassing the range of 365 to 415 ppm recorded during the Mid-Pliocene.
The details
Researchers intend to drill through the ice sheet to obtain rock and sediment samples to better understand the basin's history and stability. This proposed mission requires the coordinated use of multiple icebreakers to navigate the region.
Timeline
3 million years ago saw Mid-Pliocene climate conditions and significant ice sheet retreat.
The proposed international research project has an estimated duration of 5 to 10 years.
Researchers established 2032 as the deadline to begin the necessary work.
Deeper Dive
This research contextualizes current Antarctic conditions against the Mid-Pliocene ice sheet retreat that occurred approximately 3 million years ago. These findings indicate that the basin is sensitive to climate levels similar to those seen in the historical record.
Understanding the stability of the Wilkes Subglacial Basin could lead to more accurate global sea level projections for coastal communities. Improved data may eventually help refine infrastructure planning and flood mitigation strategies for populations living at risk from rising oceans.
The takeaway
The study suggests that East Antarctica is changing faster than previous scientific models anticipated, highlighting a need for more research. Implementing new climate policies remains essential as global CO2 levels continue to exceed conditions associated with past ice sheet retreats.
What happens next
The international scientific community aims to begin the research work by the 2032 deadline, with the project expected to span 5 to 10 years to gather sufficient data.
Further reading
Learn more about climate risks and stability in the Environmental section.
Source note: This article includes information reported by Science Media Centre NZ.
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