Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← GeographyWhich risk increases when increased sedimentation causes oxbow lake formation in a river system?
A)Decreased infiltration to groundwater aquifers
B)Increased lateral channel migration across floodplains✓
C)Reduced hyporheic exchange with river water
D)Enhanced thermal stratification in river pools
💡 Explanation
When sedimentation leads to oxbow lake formation, decreased channel sinuosity concentrates flow energy laterally because reduced path length increases shear stress on banks, resulting in bank erosion and migration. Therefore lateral channel migration increases, rather than decreased infiltration, or reduced hyporheic exchange, which have different mechanisms.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Geography →- Which atmospheric outcome results when increased Earth's axial tilt exceeds 23.5 degrees, impacting Hadley cells?
- Which mechanism causes enhanced surface phytoplankton blooms during coastal upwelling events?
- Which process determines fjord sill depth after glacial retreat ceases and sea levels stabilize?
- Which atmospheric phenomenon results when the subtropical jet stream weakens poleward of Hadley cells during summer?
- Which risk increases when pyroclastic flow encounters meltwater?
- Which landform outcome results after prolonged carbonic acid exposure?
