Tag

Dotson Ice Shelf

All articles tagged with #dotson ice shelf

science22 days ago•38 min saved

Antarctic Submersible Maps Hidden Ice, Then Vanishes Beneath Dotson Shelf

An international team used a 20-foot autonomous underwater vehicle named Ran to map the underside of the Dotson Ice Shelf in West Antarctica, revealing complex melt patterns that differ between the western and eastern portions and are influenced by underwater currents; Ran disappeared on a 2024 mission after collecting data, likely due to running aground or being lost to wildlife, prompting plans to replace it and continue this important research, with findings published in Science Advances.

via Yahoo|

#autonomous-underwater-vehicle #dotson-ice-shelf #ice-shelf-melting

environment1 month ago•3 min saved

Meltwater Myth Debunked: Antarctic Iron May Not Slow Climate

A field study at the Dotson Ice Shelf in West Antarctica finds that meltwater supplies only about 10% of the dissolved iron in outflow, with 62% from inflowing deep water and 28% from shelf sediments, undermining the iron-fertilization theory that glacier melt could curb climate change by fueling carbon-absorbing algae. The study used real-world data and careful tracing of iron sources, but covered a single site, so broader applicability remains uncertain. Further research is needed to understand subglacial iron dynamics and how they interact with warming ice shelves.

via Gizmodo|

#antarctica #dotson-ice-shelf #environment