Britannica AI Icon

Quick Summary

An outlet glacier is a stream of ice flowing from a larger ice mass, such as an ice sheet or ice cap, towards the sea. These glaciers are essentially the seaward extensions of ice streams originating from inland ice fields. They are a significant factor in the dynamics of ice sheets and can contribute to sea level rise through the calving of icebergs. The flow rate of outlet glaciers can be very high, sometimes exceeding 35 meters per day, and their advance or retreat can occur independently of climatic variations. While the melting of mountain glaciers is a known contributor to sea level rise, the exact contribution from outlet glaciers of large ice sheets like Antarctica is still uncertain.123

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.