Sumatran Earthquake Upgraded to Magnitude 9

The USGS has upgraded the Sumatran quake to magnitude 9 from 8.9.

This may not sound much, but because the magnitude scale is logarithmic it means a much larger impact and release of energy.

Bear
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Australia
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Australia.