I searched far an wide on the fukushima event I never found anything conclusive, What was apparent was wave type cloud formation and plasma balls and plasma lighting in the sky according to posts on the internet. The haarp facility in Alaska had been operating at high power in the days prior sweeping a tight range and changed frequency after the event and continued to run for a couple of days. Nasa satellite imagery showed heating in the ionosphere over the earthquake epicentre prior. I spoke with a geophysicist whose opinion was none of this could cause an earthquake. All of the details have been removed from the internet.
