There was very little loss of multi-year ice during the summer of 2013. The graph below shows the survival rates for sea ice in the Arctic Basin, grouped by age.
But it gets much worse for alarmists. Almost all of the thick ice is located far away from the Fram Strait, where it will survive the winter, and be a metre thicker next spring. Another winter/summer like 2013, and the death spiral with be officially dead.
The area of 4+ ice will nearly double over the winter, and the volume will increase by even more.