at the
Amundsen–Scott South Pole Station in the
geographic South Pole. According to Casassa, Patagonian glaciers may be in
retreat, which could indicate either climatic and geological cycles explained by the
Milankovitch cycles or
global warming. In 2024, a study on the Patagonian ice fields in which Casassa participated determined that the glacier bed deepens up to about 20 km inland, possibly making it vulnerable to future retreat. Additionally, regarding the
Gran Campo Nevado, studies involving Casassa indicate that some of the outlet glaciers lost over 20% of their total area in that period, with glacier area loss at about 2.4% per decade from 1942 to 2002. He has also mentioned that the main
ecological disturbances may include
forest fires,
floods, storms, insect outbreaks,
overgrazing,
earthquakes, various types of
volcanic eruptions,
tsunamis, firestorms,
meteorite impacts,
climate change and the damaging effects of human activity (
anthropogenic disturbances) such as
habitat fragmentation,
excessive logging,
overfishing, high use of
agrochemicals, contamination by
radioactive elements or
heavy metals, and the introduction of
invasive species. He participated in the
Congreso Futuro of 2013 with the topic "Glaciers, the challenge to survive on a stressed planet". During the 2004–2005 austral summer, he took part in the Chilean scientific expedition to the
South Pole, as well as the
Operación Estrella Polar III in the 2024–2025 summer. The
Chilean Antarctic Institute collected ice samples in the area to investigate contamination levels, and Casassa was part of the expedition alongside Chilean president
Gabriel Boric, who became the first
head of state in history to visit the
South Pole, and the third leader overall (including
heads of government) worldwide. == References ==