"Rapid erosion" refers to the quick wearing away of materials such as rock, soil, or land due to natural processes like wind, water, or ice. Full definition
The data, collected by aerial survey missions flown in the Southern Hemisphere in the summer of 2014 - 2015, provide detailed topography of the perpetually ice - free region, where surprising landscape changes, such as rapid erosion along some streams, have been observed in recent years. (sciencedaily.com)
Interestingly, steep secondary thrusts may develop in response to rapid erosion focused in the High Himalaya. (sciencedaily.com)
That was triggered by a flash warning that catastrophic failure of the emergency spillway could occur within 45 minutes due to rapid erosion by the «managed» overtopping flow — right after calming official assurances that there was no danger of dam failure. (judithcurry.com)