Packet 5: Tossup 12

Approximating the strain rate tensor for these structures yields the higher-order Blatter–Pattyn model. These are the largest structures to be modelled with “shallow” approximations that are less intensive than a “full Stokes” approach. The collapse of one of these structures is hypothesized to have caused the “8.2-kiloyear” event. These structures are the largest ones that are modelled as a viscous fluid on geologic time scales when deriving Glen’s law. (-5[2])Recession (-5[1])of these structures’ grounding lines is hypothesized to cause a positive feedback loop called their namesake “marine instability.” (-5[1])Examples of these structures (-5[1])named the Cordilleran (-5[1])and Laurentide once covered (10[2])large (10[1])parts (10[1])of (10[2])North (10[1])America. (10[3]-5[1])For (10[1])10 points, (10[1])name these large structures, (10[1])currently located in Greenland (10[1])and Antarctica, (10[1]0[1])whose melting is a major contributor to sea level rise. ■END■ (10[2]0[2])

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