Geobulletin alpha

News from the Geoblogosphere feed

New from Snet: Lithologs, a new tool to create lithological/sedimentological logs online..

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Supercomputer Simulation of Chelyabinsk-like Asteroid Entering Earth’s Atmosphere

This simulation shows a cross-section of a Chelyabinsk-like asteroid (gray) breaking up during atmospheric entry at 45,000 mph (20 km per second). A hot, high-pressure shock wave (red, orange, yellow) forms around the asteroid, causing it to fracture and flatten like a pancake. Aerodynamic instabilities shed waves of material from the surface and tear the asteroid apart. The dispersed fragments | Impressum