If the Firn Limit on a Glacier Does Not Change

question 56

True/False

If the firn limit on a glacier does not change from year to year, the glacier has a balanced snow budget.

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Definitions:

Pyroclastic Flow

A fast-moving current of hot gas and volcanic materials that flows down the side of a volcano during an explosive eruption, capable of destroying everything in its path.

Volcanic Breccia

A coarse-grained volcanic rock composed of angular fragments of volcanic material cemented together by finer particles or a mineral matrix.

Dome Collapse

The falling in of the roof of a volcanic dome due to gravitational failure, often leading to pyroclastic flows.

Volcanic Dome Collapse

The event where a volcanic dome, formed by the slow extrusion of viscous lava from a volcano, collapses, potentially leading to explosive eruptions.