Massive rearrangements of Earth's continents including decreased CO2 levels caused the abrupt formation of the Antarctic ice sheet, demonstrates a new research.
Antarctic Ice Sheet Holds a Record of 2,000 Years of Volcanic Eruptions
Sulphate dust deposits drilled deep from the West Antarctic ice sheet have provided a glimpse into the history of over 2,000 years of volcanic eruptions.
Sulphate dust deposits drilled deep from the West Antarctic ice sheet have provided a glimpse into the history of over 2,000 years of volcanic eruptions.
Huber said that the textbook version had been that gateway opening, in which Australia pulled away from Antarctica, isolated the polar continent from warm tropical currents, and changed temperature gradients and circulation patterns in the ocean around Antarctica, which in turn began to generate the ice sheet. They had shown that, instead, CO2-driven cooling initiated the ice sheet and that this altered ocean circulation.
Huber asserted that one of the things they were always missing with their CO2 studies, and it had been missing in everybody's work, is if conditions were such to make an ice sheet form, perhaps the ice sheet itself was affecting ocean currents and the climate system that once one start getting an ice sheet to form, maybe it became a really active part of the climate system and not just a passive player.
Tourism Threat to Antarctica Warning by Scientists
Better protection for Antarctica was called for by scientists as a surge in tourists visiting the frozen continent was threatening its fragile environment.
Better protection for Antarctica was called for by scientists as a surge in tourists visiting the frozen continent was threatening its fragile environment.
Source-ANI
Antarctic Ice Sheet Started to Melt 5,000 Years Earlier Than Previously Believed
Antarctic ice sheet started to shrink at the end of the last ice age, 5,000 years before previously believed.
Antarctic ice sheet started to shrink at the end of the last ice age, 5,000 years before previously believed.
Research Finds Distinct Avian Influenza Viruses in Antarctic Penguins
An avian influenza virus has been identified by an international team of researchers in a group of Adélie penguins from Antarctica.
An avian influenza virus has been identified by an international team of researchers in a group of Adélie penguins from Antarctica.
