Beerenberg in Jan Mayen is in the line of the Eastern Volcanic Zone of Iceland! It has to be calculated with the formula for the polar system of convection cells. It looks like that:
Looks complex? It is not, because you do not need the formula to see how the famous Laki is in the same line as Beerenberg. The same convection cells are at work underneath both volcanic sites! The location of the volcanic sites can be explained by referring to the convection rolls of the mantle.