mrburrito wrote:First year doing this , so I am ignorant , but I'll try without using resources . For part a: A downwards slope, and pressure buildup. For part b: Slowly and unpredictably
When this gets called wrong, explain the answer please.
Crazy Puny Man wrote:there has to be someone out there who knows this! Fozen? PacificGoldenPlover?
mrburrito wrote:Ok, pressure and gravity, so I was partially correct.
And umm basal sliding, which is when glaciers slide over the terrain it's on, lubricated by liquid water.
I think that's right.
Crazy Puny Man wrote:@Fozen: I'd like to think I'm kinda good at DP, I was 6th...but Pacific won And took medals in two other ID events So of course he owns everyone's butterfly
@burrito & ScienceOlympian: for the first part, the answer I was looking for was gravity & internal deformation of ice. I think that's on Wikipedia word for word.
For the second part of the answer, I was thinking (1) basal slip (2) plastic flow (includes plastic deformation, creep, & folding & fracturing) (3) subglacial bed deformation and (4) surges <-- I was iffy on this one. I didn't think surges were technically a WAY that glaciers move, but after taking some tests and going to invites last year it seemed like it was. Also, for number 2 I would've also put stress/strain, and supplied equations for that too, but then I reasoned that plastic flow of glacier ice is due to stress/strain -_- Fail moments...
Pacific, can you confirm/explain if surges are technically a way which a glacier moves?
Also, ScienceOlympian, what you described was plastic flow, and that's due to the structure of ice and weak molecular bonds between layers of atoms of ice, and that's why ice flows, blablabla which is what you were saying I think.
Yes, the top does flow faster than the bottom due to pressure/abrasion, & the middle flows faster than the edges because the edges are thinner & more brittle, and are more subject to friction (in mountain glaciers)
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