Hearing the Russian meteor, in America: Sound arrived in 10 hours, lasted 10 more

How powerful was February’s meteor that crashed into Russia? Strong enough that its explosive entry into our atmosphere was detected almost 6,000 miles away in Lilburn, Ga., by infrasound sensors — a full 10 hours after the meteor’s explosion. A researcher has modified the signals and made them audible, allowing audiences to “hear” what the meteor’s waves sounded like as they moved around the globe on February 15.
Source: http://www.sciencedaily.com/releases/2013/05/130503105033.htm

No Redoubt: Volcanic eruption forecasting improved

Forecasting volcanic eruptions with success is heavily dependent on recognizing well-established patterns of pre-eruption unrest in the monitoring data. But in order to develop better monitoring procedures, it is also crucial to understand volcanic eruptions that deviate from these patterns. New research retrospectively documented and analyzed the period immediately preceding the 2009 eruption of the Redoubt volcano in Alaska, which was characterized by an abnormally long period of pre-eruption seismic activity that’s normally associated with short-term warnings of eruption.
Source: http://www.sciencedaily.com/releases/2013/04/130429133705.htm

Earth’s center is 1,000 degrees hotter than previously thought, synchrotron X-ray experiment shows

The temperature near Earth’s center is 6,000 degrees Celsius, 1,000 degrees more than given in an experiment 20 years ago. This experiment with synchrotron X-rays confirms geophysical models that explain Earth’s magnetic field and the creation and intense activity of hot-spot volcanoes. The scientists also established why the earlier experiment had produced lower temperature figures.
Source: http://www.sciencedaily.com/releases/2013/04/130425142355.htm

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