User blog comment:Icchi/About the initiation/@comment-23784953-20130820144755/@comment-10390252-20130820163827

It could be that too but there is a precedent for saying 'warhammer'. Nora's symbol is a warhammer marked with thunderbolts. The other girl in this group's emblem is a spear, like her own weapon. Based on this precedent there is an increased chance that the melee mode of Nora's weapon is a warhammer.

Not overwhelmingly Norse in its own right but add in the pop culture link to Thor...