The giant Popocatepetl stirs
Article Abstract:
Popocatepetl, a 5,452 metre high volcano, erupted over Mexico City in June, following years of increasing activity. The area affected by the eruptions is densely populated and there are concerns that the increased activity may be a precursor to a major eruption. A serveillance system incorporating real time seismic monitoring and ground movement observations has been set up. A colour coded alert code has also been devised, determining the responsibilities of experts involved.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Giant fluctuations in a free diffusion process
Article Abstract:
Research using shadowgraph technology demonstrates that spatial fluctuations and inhomogeneities exist in free diffusion within macroscopic concentration gradients. Coupling occurs between concentration and velocity fluctuations in the non-equilibrium state. Non-equilibrium scattered intensity distributions during diffusion are shown, together with forward-scattered intensity over time.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
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