[CLSTR]
< Back to situation

[REVISION HISTORY]

Perito Moreno Glacier retreat in Argentina

Updated 2 times since CLSTR started tracking revisions of this situation.

What changed

2026-10-06 09:24 UTC → 2026-10-28 19:14 UTC · added removed

The Perito Moreno Glacier in Argentina is experiencing a record-breaking retreat. Monitoring data from Glaciarium and the Los Glaciares National Park administration indicates that the ice front moved approximately 910 meters away from the Magallanes Peninsula between February and June 2026. This movement movement, occurring in roughly 100 days, surpasses the previous historical record of 750 meters set in 1899. During the period from November 2025 to June 2026, the glacier lost a total of 1.46 square kilometers of surface area. Specifically, drone monitoring conducted since May 2025 shows that 0.65 This includes 0.81 square kilometers were lost between February 24 and June 4, adding to during the 0.81 2025-2026 austral summer and 0.65 square kilometers lost during the 2025-2026 austral summer. autumn of 2026. Scientific research led by Moritz Koch, Cristiano Sommer, and Matthias H. Braun highlights a significant increase in the annual descent rate of the frontal surface. The rate rose from 0.34 meters per year between 2000 and 2019 to approximately 5.5 meters per year between 2019 and 2024. To understand these changes, researchers utilized ground-penetrating radar (GPR) and bathymetric surveys in Lago Argentino to reconstruct subglacial bed topography. While the Perito Moreno was historically viewed as an exception to the recession trends seen in other Patagonian glaciers, significant retreat has been evident since 2018. Experts attribute this acceleration to climatic variables and topographical changes. Luciano Bernacchi, a director at Glaciarium, stated that the acceleration is likely due to the glacier losing contact with an underwater rock formation, or moraine, which previously served as a natural support base. This loss of contact makes the ice front more vulnerable to water dynamics and calving.

Versions

  1. 2026-10-28 19:14 UTC Perito Moreno Glacier retreat in Argentina
  2. 2026-10-06 09:24 UTC Perito Moreno Glacier retreat in Argentina
  3. 2026-10-06 09:24 UTC Perito Moreno Glacier retreat in Argentina

Only revisions since CLSTR began indexing content versions appear here. Select a version to see what changed compared to the one before it.