Abstract:<p>Ice is a non-Newtonian fluid whose rheology is typically described using Glen's flow law, a power-law relationship between stress and strain rate with a stress exponent, n, generally taken to be 3. Recent observation-based work suggests that a more accurate choice for the Glen&#8217;s law exponent in high-strain regions like ice shelves may be n=4, implying that ice viscosity is more sensitive to changes in stress than is generally assumed. The implications of a higher stress … Show more
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