Anything to do with the earthquake around Indonesia?
Might be! Shaken and not stirred don't ya'know! (Or was it the other way around?)
Has to do with high winds, which is a fact of life on the north slope. If you look at a satellite image or even a USGS topo map of the region you will see it is covered with lakes in summer, and the lakes, which are sinkholes in the permafrost and would otherwise be round or at least of random shapes, are elongated in a direction. Wind does that.
No, just the effect of the right combinations of winds and currents. A few journalist are using the term tsunami just to catch the eye, not a real comparison.
Frozen tsunami, Mountains of ice coming ashore called threat to property, lives