Analysis of video footage reveals how wave changed as it travelled over mud-rich rice paddies, exerting more force Analysis of video footage reveals how wave changed as it travelled over mud-rich rice paddies, exerting more force I t is just over 15 years since the devastating Tohoku earthquake and tsunami struck Japan, killing almost 20,000 people and triggering the Fukushima Daiichi nuclear disaster. Fresh analysis of video footage of the wave has revealed that the mud-rich coastline made the