Glaciation 1.2.3 - Shear Stress

  • Created by: BluJay117
  • Created on: 30-09-18 15:56
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  • Shear Stress
    • An imbalance in accumulation and ablation causes shear stress
      • Snow and glacier ice accumulates, underlying ice can no longer support the slope
        • Eventually, shear stress will become great enough to overcome ice strength and friction
          • Glacier ice deforms and moves downward away from the zone of accumulation
            • Ice movement towards the ablation zone prevents further build-up in the accumulation zone
              • An equilibrium slope angle is maintained
                • As a result of this process, glacier ice is always moving towards the snout, regardless of whether or not the glacier as a whole is advancing or retreating

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