plume
-
Earth
Tracking missing mantle plume in ancient Samoa: researchers shed light on 30 million year gap
Bathymetric map of the Pacific region focusing on the trajectory of Samoa’s Hotspot 100 Mil, from Samoa’s hotspot active volcanoes (Vailuluu Seamount) to the Dutton Ridge (near the Mariana Trench). Credit: AGU Advances (2024). DOI: 10.1029/2023AV001079 As magma plumes rise through the Earth’s lithosphere, volcanoes, islands, seamounts, and other features form on the Earth’s surface. As tectonic plates move over…
Read More » -
Earth
Research into the Afar mantle plume provides new insights into deep Earth processes
Schematic of mantle He concentrations and 3He/4He (Ra), showing how the Afar plume 3He/4He signature is generated. Credit: Communications Earth & Environment (2024). DOI: 10.1038/s43247-024-01675-2. https://www.nature.com/articles/s43247-024-01675-2 Advanced analysis of tiny bubbles of ancient gas trapped in volcanic rocks, combined with new geophysical modelling, has shed new light on a long-held hypothesis about the deep Earth. An international team of scientists…
Read More » -
Physics
AI enhances plasma plume analysis
On the left is a human visual depiction of a pulsed laser deposition plasma plume. On the right is an image from a video showing an AI interpretation of the plasma plume to predict film growth characteristics. Credit: Sumner Harris/ORNL, U.S. Department of Energy In a paper published in the journal npj Computational Materials, scientists at Oak Ridge National Laboratory…
Read More »