Question
Whether the distribution of these landforms across the modern world accurately reflects former ice margin positions is key to their use in reconstructing paleoclimate data. For 10 points each:
[10e] Name this accumulation of sediment and debris carried by a glacier. The “terminal” type of these landforms marks the maximum extent of a glacier if it is currently receding.
ANSWER: moraine [accept terminal moraine]
[10h] Moraines may be used to generate glacier reconstructions, from which this quantity can be derived. This quantity can be calculated using the toe-to-headwall altitude ratio or area-altitude balance ratio.
ANSWER: equilibrium-line altitude [accept snow line]
[10m] The equilibrium-line altitude is the area of a glacier where accumulation is equal to the magnitude of this general process in which a glacier loses mass.
ANSWER: ablation [prompt on melting or erosion by asking “what broader process is that a part of?”]
<VS, Other Science>
Summary
| 2024 ARCADIA at UC Berkeley | 2024-12-06 | Y | 2 | 15.00 | 100% | 50% | 0% |
| 2024 ARCADIA at Waterloo | 2024-11-09 | Y | 1 | 20.00 | 100% | 100% | 0% |
| 2024 ARCADIA at Illinois | 2024-11-09 | Y | 1 | 20.00 | 100% | 100% | 0% |
Data
| Illinois Blue | Chicago A | 10 | 0 | 10 | 20 |