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Questions tagged [water-bodies]

For questions about any non-flowing body of water in general. Rivers should use the [rivers] tag.

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5
votes
2answers
171 views

Northern Great Lakes in an Alternate Island Africa--Would the Sahara DESERT Still be Around?

Recently, I found this map of Africa's paleolakes in the Imaginary Maps reddit: Finding this map was mere coincidence, but this map definitely interests me. Now there have been multiple what-if, ...
5
votes
2answers
154 views

What aquatic creatures would evolve in a world with ripped apart/chaotic oceans?

In this world, a progenitor has created a mass of order out of chaos, with the possibility of entropic fluctuations increasing the further out from the center you get. What do I mean by entropic ...
2
votes
4answers
313 views

Can pumice stone be used as castle material on water?

For the same scope, another type of floating stone "on water" would be also fine. Can that type of stone be used as castle material to float on water? Will it have a different effect if built on salt ...
13
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5answers
3k views

How might a landlocked lake become a complete ecosystem?

Let's assume that there is a lake that has formed from snowmelt and rainfall. The lake has never been in contact with other bodies of water. How might this lake become a complete ecosystem?
7
votes
2answers
101 views

Feasibility of large and isolated swamp-like enviroment

For my world I would need a really large swamp (or similar kind of wetland). It should be about 200km in diameter, which should be quite possible given a large enough flat terrain and enough rain. ...
3
votes
1answer
202 views

What would be the implications of an ocean made from blood on the world? [closed]

In my world of Ulhe rather than having saltwater between continents the oceans are filled with the blood of a god. Besides being blue the blood has similar physical properties to human blood. It is ...
5
votes
2answers
335 views

Would there still be land if the amount of water in the oceans was doubled?

A portal to another Earth in a parallel universe is open at the bottom of the Ocean and all the water is moving to the new Earth in the form of a waterfall in the middle of the Atlantic. The form of ...
1
vote
1answer
138 views

How the orbit of Earth changes if it has the double of water in the ocean? [closed]

A portal to another Earth in a parallel universe is open at the bottom of the Ocean and all the water is moving to the new Earth in the form of a waterfall in the middle of the Atlantic. The form of ...
4
votes
1answer
157 views

Lake World and Water Salinity

I have an idea for a world where land prevails over water and what waters there are are largely relegated to scattered lakes of varying sizes. Some of these lakes would be mega lakes, the size of the ...
2
votes
1answer
99 views

weather after the earth gets flooded

tl;dr : the earth has been gradually flooded, over the course of a few hundred years. Also, there are now large lumps or ice raining out of the sky (not very often), causing massive tsunamis. I have ...
6
votes
4answers
1k views

Would a “city on a bridge” be friendlier to the environment than a more typical city on land? [closed]

The "city on a bridge" that I'm envisioning has the entire population living their entire lives on a habitable bridge or a series of such bridges over major rivers, only going on land for recreation ...
22
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16answers
9k views

How to put a lake on the ceiling?

Another user's answer to a recent question, specifically the way it was worded, gave me a vision I cannot shake. Our intrepid adventurer, Joe A. Venture, is making his way through a subterranean ...
0
votes
1answer
157 views

What (and how long) would it take for all the water from a Great Flood to go away? How much would such an event shape the geography of the world?

Many worlds have an apocalyptic/cataclysmic event. If mine is a Great Flood, how long would it take for much of the world to be habitable land again? Keep in mind, by the events of the present, the ...
2
votes
2answers
261 views

How long does it take for an eclipse to cause the ocean surface to freeze?

I am working with a story. I wish to make my story somewhat logical by adding some science and thereby not making it to appear fantasy. This story is on a fictional planet far away from Earth. Let's ...
13
votes
1answer
250 views

What sort of water sources could occur in a world tree?

I'm working on a fantasy setting that's literally a giant tree on a planetary scale. Magic is in effect, so concerns of how a tree that large could survive are irrelevant, but I need to figure out ...
3
votes
3answers
185 views

Is there dry land on Earth if the moon orbits just above its Roche limit?

Imagine an Earth-like world in all respects except that the Moon is much much closer. I think I’m right to say if the Moon were very close that tidal forces would slowly rob it of momentum and it ...
4
votes
2answers
138 views

Effects on Earths development if 95% of the water was missing? [closed]

If a planet just like Earth formed but with 95% less water than on our world, what effect would this have on the development of the planet – in outline. Things to consider, might we still see plate ...
5
votes
4answers
605 views

What methods might an ancient civilization take to extract fresh water from great depth?

I previously asked What measures might an ancient civilization take to protect itself from extreme heat? The answers gave some useful suggestions as to how cities could be adapted. For convenience in ...
18
votes
3answers
4k views

How deep would the ocean be if continents all eroded away?

If all of the continental crust on Earth were eroded down, smoothed out, and distributed evenly across the whole planet, filling in all of the ocean basins and displacing the water therein, how deep ...
16
votes
3answers
2k views

A planet with all of its water underground

Question: Could a planet contain all of its (vast) oceans underground? I imagined a planet with no surface oceans - and no water cycle above ground - but where life was still possible. My initial ...
19
votes
8answers
4k views

Living in a Giant Swamp - Construction

In my fantasy novel, I have people living in a giant swamp forest. The swamp stretches as far as the eye can see, so draining is not an option, as there is simply nowhere to drain the swamp to. My ...
14
votes
11answers
3k views

How to create tides in a small sea?

I've done a bit of research and small bodies of water don't have significant tides, even the Mediterranean doesn't have particularly large tides. So how can I get bigger tides on a small body of ...
38
votes
20answers
12k views

How would someone destroy a dam in a world without explosives?

I'm considering the mechanics of a "shock and awe" scene in my novel which could see an old dam being brought down. The era is equivalent to that of the middle Roman empire, so introducing explosives ...
6
votes
8answers
420 views

How might a life-sustaining planet exist with an “atmospheric ocean”?

This might be a little difficult to explain, but basically: the concept of "atmospheric ocean" is a gas that is found pretty much everywhere on the planet. Probably very dense and sinks to the surface,...
3
votes
4answers
304 views

Basin on a mountaintop plateau - how to keep the water salty?

I have recently asked a question about creating a sea on a mountaintop. I have come to realize that I would run with some problems by doing this, namely about the salinity of the lake. I want that ...
12
votes
5answers
3k views

Mountaintop sea - Characteristics regarding tides, outflow and microclimate

In an Earth-like world, with a single Moon similar to ours, there is a mountain that is 1.000 meters high. On top of that mountain there is a crater with ca. 100 Km radius and 100 m of maximum depth. ...
65
votes
18answers
7k views

Ultimate Australian Canal

First of all, yes I'm Australian, and yes I am using a kangaroo to type this up. If you take a look at Australia, it's a pretty sad place geographically. Very flat, very dry, mostly desert and for ...
2
votes
2answers
283 views

How would water behave on a planet with no moons?

My novel is set on a planet covered in 90% water with no moons. How would the lack of natural satellites effect the waves and wind?
2
votes
1answer
135 views

What noticeable impacts on a human body if every ocean turns into dead sea? [closed]

Suppose the salinity of all the ocean in the world rivals the dead sea, using time lapse to illustrate how would an average healthy adult human being is susceptible to the aftermath of inhospitable ...
5
votes
2answers
457 views

Dam wall failure: How to stop a Domino effect?

If you have a series of dams built along a valley, what will happen if the last one in the line fails suddenly and catastrophically? Scenario. You have a dam wall about halfway down a long narrow ...
2
votes
2answers
530 views

If we separate the Atlantic and Pacific oceans and install a generator in Panama canal, how much electricity do we get?

Could one (and how much) generate electricity by building a wall connecting: South Africa to Antarctica South America to Antarctica Northern Canada to Northern Greenland Northern Greenland to Russia ...
9
votes
2answers
342 views

An alternative waterworld

Let's pretend the lithosphere of Earth were smoothed somehow to fit a perfect geoid and maintained in this shape; all the water would turn into a uniform layer flowing over the ground. According to ...
20
votes
5answers
3k views

The Reality of a River World

In a setting I am presently working on, I have envisioned a world similar to Star Wars' Takodana, in that its water is mainly in the form of large rivers, or smaller seas (I generally picture it ...
8
votes
4answers
689 views

Natural underground water distribution in a desertic continent

I'm worldbuilding a continent that's mostly desertic (still trying to decide if sand or rocky desert, but definitely a hot desert). All the rain would fall on the edges of it, through a chain of ...
19
votes
7answers
4k views

What's the quickest way to add oceans to a planet?

After writing this question about the ecology of a terraformed planet, I realized that I hadn't quite tied up all the loose ends of the terraforming process itself. I intended for a group of aliens ...
4
votes
1answer
106 views

Mountain Spring Inquiry

Details: Would it be possible to have a mountain spring that only flows occasionally, perhaps only for a few days, following moderate rainfall? The spring water would feed into an otherwise stagnant ...
8
votes
5answers
551 views

How could state borders equal major watersheds?

How can I explain, in a believable way of course, that country borders closely resemble drainage divides? They don’t always match mountain ridges, which are natural borders – as are the rivers ...
19
votes
9answers
13k views

How wide can a river be?

Related but not a duplicate: How long can a river physically be on a planet? How wide can a river possibly be? Many river are over 10 kilometers wide, but how wide can a river be before it is no ...
15
votes
3answers
2k views

How long can a river physically be on a planet?

How long can a river be? Are there any physical limits on its length, coming from the necessary altitude drop, the triple point of water, or other factors? You can alter whatever parameters you find ...
5
votes
2answers
264 views

Effect of an enormous waterfall on regional climate and ecosystem

My premise is that a bay-like body of water empties into a sea via a waterfall. Specifications: The sea is roughly the size and shape of the Mediterranean. The tributary body of water is around 20 ...
2
votes
1answer
1k views

What would be the consequences of the boiling temperature of water suddenly becoming 200°C or 1000°C? [closed]

Say water boiling temperature suddenly became 200°C or even 1000°C, so little evaporation due to boiling would happen naturally on a large scale. What consequences would this have? Would the world ...
4
votes
2answers
334 views

How would intelligent life evolve on an Earth-like planet with dangerous high tide?

Inspired by the 2014 film Interstellar directed by Christopher Nolan, the crews landed on a planet with water flooded up to knee level. Suddenly a wall of water like mega tsunami appears from a ...
3
votes
4answers
5k views

Is it possible for the oceans to freeze solid (at least on the surface)?

Can the oceans freeze (at least several feet below sea level)? I know that the temperature for salt water to freeze is lower/colder than fresh water, and when it does freeze, the ice is mostly salt-...
4
votes
5answers
1k views

How would it be possible to have a world of mostly jungle? [duplicate]

Recently I was making planets again and I was wondering if it was possible to have a world consist of mostly jungle and rain forest biomes. Also with that I was wondering what would need to be the ...
6
votes
6answers
3k views

Is it possible for a planet to be devoid of polar ice caps?

I know water is required for life on a planet so I got to thinking, is it possible for a world to be a functional planet (plants animals etc.) without polar ice caps and if so, how would it work ...
5
votes
3answers
6k views

What would Earth be like if there was no salt water?

I was making a planet for a game and I was wondering how the world would be affected if it never had salt water, but instead a huge fresh water supply. Then I thought about what it might do to the ...
3
votes
4answers
417 views

How to remove water from a planet during terraforming?

I'm working on a project involving terraforming, and I'm compiling a list of techniques for various goals. Most of them are well-documented in terraforming circles, but one area I've found that seems ...
9
votes
4answers
687 views

If an Earth sized planet had 1.5-5x more or less gravity than that of the Earth, how would it affect the shape of waves in water bodies?

I'm not talking only about the kind of waves one sees at a sea shore, but also smaller waves like ripples and chops, and bigger waves like tsunamis. Assume a similar tidal force to that of Luna.
7
votes
2answers
2k views

Pros and cons of a city on water

I read that Venice was built on the lagoon because the population was on the run and wanted a place isolated from the Huns but gave them access to the sea. But, is this the only reason for founding a ...
4
votes
1answer
395 views

What would happen to the ocean when lowering atmospheric density?

Suppose one fine day a mischievous god decided to eradicate all air molecules on Earth in an instant, my question is what will hapen to the ocean? Please kindly disregard (omit) your concern for life ...