Afar
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Physics
Portable Raman analyzer detects hydrogen leaks from afar
The analyzer relies on a robust reinforcement mechanism, which dramatically improves detection sensitivity, reflecting the very high number of times blue pump light from hydrogen and Raman scattered light in the multipath cavity. Credit: Andreas Muller, University of South Florida Researchers have developed a new portable Raman analyzer that can accurately measure very low concentrations of hydrogen gas in the…
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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…
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