5 ms·
Watering and draining planets – math and data
- whatshisface 5y agoHow can the far side of the moon be higher than the near side without shifting the center and making them equal?
- EdwardDiego 5y agoSame way that the northern hemisphere of Mars is a lot lower than the southern hemisphere - crustal thickness. The far side has a thicker crust than the near side, apparently due to the effect of earthshine from the molten earth on the near side early in the Moon's history.
- saberdancer 5y agoDensity does not have to be uniform.
- cheschire 5y agoI’m no astrophysicist but centrifugal force seems like a plausible explanation.
- darkerside 5y agoThat was phrased really oddly. I think essentially he means, the far side has a larger topographical variance.
- John7399 5y agoEverything is very open with a clear description of the issues. It was truly informative. Your website is very helpful. Many thanks for sharing! https://www.upsers.onl/ https://www.upsers.onl/
- Bobylonian 5y agoI somehow expected that this article would talk about technical issues on how to deliver water to planets and how to drain them and where to put that water. To be fair, if all ice would melt, neither Greenland nor Antarctic would have hole - crust would rebound due to ice removal. Another thing - most of the melted water would flow to equator, so there should be adjusted loss to flooding in northern regions and even more calculated to equator regions.
- imachine1980_ 5y agoi don't know that much about the topic why the water go to the equator, pleas some good resource about the topic, search for this is kind a mess full of fakenews and yellow press.
- standardly 5y agoCould be centrifugal force due to the earths rotation but more likely has something to do with temperature. Could be a combination of both. I'm just guessing though
- Bobylonian 5y agoYes, it has a name for it as equatorial bulge: https://www.nationalgeographic.org/encyclopedia/equator/ https://www.nationalgeographic.org/encyclopedia/equator/ It was observed in other planets first: https://en.wikipedia.org/wiki/Planetary_coordinate_system#Equatorial_bulge https://en.wikipedia.org/wiki/Planetary_coordinate_system#Eq... https://en.wikipedia.org/wiki/Post-glacial_rebound https://en.wikipedia.org/wiki/Post-glacial_rebound So, it could be quite possible, that even with sea level rise, crust rebound will play bigger role around poles and there might be some new lands in the sea around north pole - as it is quite shallow ocean near Russia and Canada.
- ZhangSWEFAANG 5y agoI wonder why California isn't covered with water when the sea level rose 1000 m
- adrianN 5y agoIf the planets had water, their surface would look very different due to erosion.
- mikro2nd 5y agoYou're right, of course, but I still found it fascinating and inspiring to get some idea of what Venus would look like with seas (and a reasonable temperature to make that possible, no doubt). For me it doesn't need to be correct in every detail. Just like reading a novel, my willing suspension of disbelief can handle this level of "fantasy"/speculation. It's a beautiful image of Venus-in-a-next-door-cosmos anyway.
- iota7 5y agoAt +1000M almost everything is gone into water. But still something is there. I wonder at how much it will completely cover the current human habitat.
- fifilura 5y agoBye bye, Denmark!
- Gravityloss 5y agoWolfram Alpha is great for some what-if scenarios: https://www.wolframalpha.com/input/?i=halley+comet+volume+%2F+mars+surface+area https://www.wolframalpha.com/input/?i=halley+comet+volume+%2...
- nikkinana 5y agoNot gonna happen, the earth will dry out. No pipes will fix it. Only taxes on "free" countries and politicians talking will solve us out of this next big thing.
- 6gvONxR4sf7o 5y ago> strangely the far side [of the Moon]… is higher than the near side Is it because of a tidal effect or something due to the nearby Earth? Would the same thing happen to water on the moon?