Which feedback results when accelerated erosion bares previously deposited alluvial valley fill?

💡 Explanation

Increased incision and channel entrenchment occurs because removal of the cover triggers isostatic rebound, therefore valleys incise to adjust, rather than continuing equilibrium; the mechanism is Valley Incision as the exposed base erodes.

• Which risk increases when upstream river engineering projects disrupt sediment deposition in floodplains adjacent to engineered levees?
• Which risk rises significantly when valley-confined lava flows develop levees?
• Which effect does increased saturation have on regions prone to solifluction?
• How does the Coriolis effect influence oceanic gyre formation?
• Which impact accelerates delta subsidence where sediment supply reduces?
• Which mechanism primarily controls orographic lift leading to enhanced cirque formation on mountain windward slopes?