Which floodplain change results when sediment deposition exceeds erosion?

💡 Explanation

Alluvial terrace formation raises the floodplain because aggradation by sediment deposition outpaces erosion, therefore forming new, higher surfaces; rather than meander incision or channel braiding causing different erosional patterns in the original floodplain.

• Which outcome occurs when permafrost thaws beneath a sloped glacial moraine?
• Which risk increases when coastal sediment transport stops due to a dam interrupting longshore drift?
• Which mechanism initially reduces North Atlantic Deep Water formation amplifying climate cooling?
• Which mechanism causes increased bank erosion in areas near alluvial gold mining operations?
• Which outcome occurs when suspended particulate density decreases regionally?
• What drainage pattern indicates underlying fractured bedrock's primary influence on stream orientation?