Possible earthquake early warning signal discovered

From the AGU: An atmospheric precursor to the recent Japan megaquake Most scientists believe that earthquakes are inherently unpredictable, and reports of various kinds of earthquake precursor signals have been difficult to verify. However, in a new study, Heki reports a possible ionospheric precursor to the devastating 11 March 2011 magnitude 9 Tohoku earthquake in…

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NRL Scientists Develop 3D Model of the Ionosphere F-region

From the Naval Research Lab, not our normal fare, but interesting for its uniqueness. The first global simulation study of equatorial spread F (ESF) bubble evolution using a comprehensive 3D ionosphere model, SAMI3, has been demonstrated. The model self-consistently solves for the neutral wind driven dynamo electric field and the gravity driven electric field associated…