Timeline for Why does ice melt slower at higher altitudes?
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| May 20, 2017 at 6:07 | vote | accept | Saadman Yasar | ||
| May 20, 2017 at 2:53 | comment | added | Berry Holmes | @MaxW Edited, please have a look. | |
| May 20, 2017 at 2:50 | history | edited | Berry Holmes | CC BY-SA 3.0 |
added 1725 characters in body
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| May 19, 2017 at 20:58 | comment | added | MaxW | @BerryHolmes - Ugh... From your own data... which is more significant on Everest (a) a summer temperature of -19°C or (b) a pressure of 250 torr? // My point about a small difference in pressure is that 250 torr is much closer to 760 than 4.58 torr since the relationship on the phase diagram is logarithmic. | |
| May 19, 2017 at 16:57 | comment | added | Berry Holmes | @MaxW Talking about the ice-water equilibrium (probably you're thinking of an elevated melting point) at yet another temperature asks for a changed (lower in your case) pressure in itself (see the phase diagram), which contradicts your first comment. | |
| May 19, 2017 at 16:48 | comment | added | MaxW | @BerryHolmes - I think you constrained the problem beyond how it was stated. The original problem makes no mention of constraining the consideration to 0°C. | |
| May 19, 2017 at 9:44 | comment | added | Berry Holmes | @MaxW This has nothing to do with temperature. We're talking about the equilibrium between air and water at 0°C (which I've stated in the first line of my answer). Also, if you're so keen about the temperature of the surroundings, Everest's (summit) temperature averages -19°C in summer and -36°C in winter. Apply Fourier's law (law of heat conduction); it tells you that heat will now flow from ice to the surroundings, thus further lowering the temperature of ice. | |
| May 18, 2017 at 20:40 | comment | added | Jon Custer | The pressure at the summit of Everest is roughly 1/3 of an atmosphere. You would notice it... | |
| May 18, 2017 at 19:50 | comment | added | MaxW | Even on Mt. Everest the pressure difference will be small. The main effect on ice melting is temperature not pressure. | |
| May 18, 2017 at 15:55 | history | answered | Berry Holmes | CC BY-SA 3.0 |