First of all, long time lurker, without any formal training on the subject (only what I've picked up here). So I apologize in advance if this isn't what I think it is.
Has anyone noticed the big crack (?) that starts from around Barrow and curves towards the North Pole? It began forming about 3 days ago and has propagated quite a lot. It's visible on the IJIS Arctic Sea Ice Monitorhttp://www.ijis.iarc.uaf.edu/cgi-bin/seaice-monitor.cgi?lang=e
Is this something normal - what I mean is - has it happened before?