lake in a volcanic
caldera in the interior of the Vatnajökull ice
cap (
Björns-
son, 1988). Jökulhlaups from Grímsvötn have
been known since at least the fourteenth
century (Þórarinsson, 1939, 1974). In the
beginning of the twentieth
century there were
about ten years
between outbursts but the floods diminished with time and
became
more frequent.
After a
catastrophic, rapidly rising flood
caused
/media/vedurstofan/utgafa/skyrslur/2009/VI_2009_006_tt.pdf