How Fast Is Glacier Surge?

Surge glaciers accelerate dramatically — sometimes flowing 50 metres per day, around 100× faster than typical glaciers. Greenland's Jakobshavn Isbræ has been continuously surging and is still accelerating year over year.

Surging glaciers can flow 50 metres per day — visible motion to a patient observer.

• 400× faster than typical glaciers
• Still 2,000× slower than a walking human