As Gidde said, the fractal dimension is too consistent. It's also really rather high.

Also, the polar ice packs don't match the projection. The straight lines at the top and bottom of the map are the poles. That is, the entire line is the point at the pole stretched out. So with the edges of your ice packs touching those lines, it means your ice packs are offset from the poles at precisely the right angle so that their edges hit the poles, and so that they are both offset along precisely the same meridian.

Take a look at Antarctica in this map http://upload.wikimedia.org/wikipedi...projection.jpg

Note how the coastline of Antarctica touches the sides (the 180° Meridian) and meets it at the same parallel on both sides. That's what a shape properly containing a pole looks like in Winkel Tripel.