Fukushima is looking steam this morning:
I don't know if the ice wall has anything to do with the level of steam visible but I did observe a DECREASE of the steam that coincided with the activation of the ice wall, as illustrated by my post from April 7, 2016: http://majiasblog.blogspot.com/2016/04/visible-fukushima-emissions-down.html
The visible level of steam has been building back up recently. Is it because of leaks in the ice wall? I don't know....
Fukushima plant’s ice wall not watertight, says architect THE ASSOCIATED PRESS April 28, 2016 at 18:45 JST http://www.asahi.com/ajw/articles/AJ201604280098.html
But even if the frozen barrier built with taxpayers' money works as envisioned, it won't completely block all water from reaching the damaged reactors because of gaps in the wall and rainfall, creating as much as 50 tons of contaminated water each day, said Yuichi Okamura, a chief architect of the massive project. "It's not zero," Okamura said of the amount of water reaching the reactors in an interview with The Associated Press earlier this week. He is a general manager at Tokyo Electric Power Co., or TEPCO, which operates the facility that melted down after it was hit by a tsunami in 2011, prompting 150,000 people to evacuate.