A glacier retreated 1,200 meters over 40 years. If the retreat rate doubled after the first 20 years, how many meters did it retreat in the second 20 years?

Tue, 05 May 2026 21:22:14 +0000

Glacier Retreat Study: How 1,200 Meters Retreated Over 40 Years with Accelerated Loss A recently analyzed glacier has provided critical insights into how glacial retreat speeds respond to climate changes. Data shows the glacier retreated a total of 1,200 meters over 40 years, but the rate of retreat wasn’t constant—highlighting a significant acceleration in the second half of the period. ### Early Retreat: Stable but Steady For the first 20 years, the glacier retreated steadily at a consistent rate. Let’s calculate how much was lost in that initial phase.