lightning strikes can be over 10 km in length and are
sometimes tilted and to the side of the volcanic column must be taken into account. This
adds to the lightning location uncertainty, which is often a few km. Furthermore, the
volcanic column may be swayed downwind, e.g. see Figure
1. Therefore, location of a single
lightning can be misleading but by calculating average location of many
/media/vedurstofan/utgafa/skyrslur/2013/VI_2013_006.pdf