Excerpts taken from Atmosphere Above Japan Heated Rapidly Before M9 Earthquake
|Infrared emissions above the epicenter increased dramatically in the days before the devastating earthquake in Japan, say scientists.|
Geologists have long puzzled over anecdotal reports of strange atmospheric phenomena in the days before big earthquakes.
Last year, we looked at some fascinating data from the DEMETER spacecraft showing a significant increase in ultra-low frequency radio signals before the magnitude 7 Haiti earthquake in January 2010.
They say that before the M9 earthquake, the total electron content of the ionosphere increased dramatically over the epicentre, reaching a maximum three days before the quake struck.
At the same time, satellite observations showed a big increase in infrared emissions from above the epicentre, which peaked in the hours before the quake. In other words, the atmosphere was heating up.