In 1986, the bursting of one of these features caused a jökulhlaup (YOH- kul-loop) that ruined the town of Yakutat, and rotational movement of these features can create cracks known as bergschrunds.
In 1986, the bursting of one of these features caused a jökulhlaup (YOH- kul-loop) that ruined the town of Yakutat, and rotational movement of these features can create cracks known as bergschrunds. These features form where there is accumulation of firn, and they generate a related marine feature by a process called calving. The parallel movement of two of these features can form a sharp ridge called an arête (uh-RAYT), and Louis Agassiz (aa-gas-see) first suggested long geologic periods dominated by these features after studying their remnants like eskers, drumlins, and moraines. Classified into continental and alpine types, name these large, slow-moving masses of ice that once covered much of the northern hemisphere.
In 1986, the bursting of one of these features caused a jökulhlaup (YOH- kul-loop) that ruined the town of Yakutat, and rotational movement of these features can create cracks known as bergschrunds.
glaciers