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Questions tagged [currents]

For questions the dynamics of fluid (including gas) flows. This includes oceanic circulation, rivers, major winds, and atmospheric circulation.

8
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1answer
104 views

How would ocean currents work with a gulf that's closed to the equator on both sides?

I'm running a D&D campaign and am using a modified map of Venus for it that shows what Venus would look like with similar amounts of water to Earth. The problem I'm running into is mapping the ...
8
votes
1answer
125 views

Can you critique my sea temp map and answer a couple of specific questions?

I'm working on yet another iteration of a world map project. I'd like to ask for some opinions on the sea temperature map I've done: I also have a few specific questions about some areas on the map. ...
6
votes
1answer
138 views

Ocean currents on a world with 1 continent and many archipelagos

I am building a world that has a single giant continent and nine island chains around the equator. I watched Artifexian's video on ocean currents and made a basic map, but it has no information ...
5
votes
3answers
199 views

What would happen to the climate if Earth's sea-levels rose 2000m?

This is the first of possibly several posts about the following scenario, in which Earth's sea-level rises 2 km overnight, generating a world map looking like this: Question: What would be the ...
4
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2answers
124 views

All the Radioactive Metals Inside Earth's Core--How Would They Affect Convection?

In relation to a recent question of mine, this alternate Earth still has its core consisting of 84% iron, but the other 16% contains the greatest concentrations of all known species of heavy metals (...
3
votes
2answers
160 views

How can I explain the geography and climate of my planet?

I've recently decided to revive an old project of mine involving an alien planet. Unfortunately, however, I was not as good a worldbuilder then as I am now, and that's having some consequences. Back ...
61
votes
9answers
14k views

A 40km diameter alien saucer is floating 2km above the ocean for a long time. What are the effects on the sea ecosytem below?

Twenty years ago, a 40km diameter alien saucer came to Earth, and stopped 2km above the Atlantic ocean, somewhere near the midpoint between Casablanca, Morroco and Natal, Brazil but over international ...
5
votes
2answers
168 views

How would the weather be affected by a constant miles-wide maelstrom?

There is a giant equatorial maelstrom surrounded by three landmasses sucking warm water down to the bottom of the ocean. Somehow, magically or some weird physical process I haven't fixed on yet, this ...
1
vote
2answers
108 views

The Tethys Renewed: Where Cold Meets Warm?

The Cape of Good Hope in South Africa is the point where the warm, moisture-carrying Agulhas Current from the Indian Ocean collides with the cold, nutrient-carrying Benguela Current from the Atlantic. ...
2
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3answers
658 views

How could Reverse Mountain (One Piece) exist? [duplicate]

In One Piece saga there is the so-called Reverse Mountain. This is a Mountain with sea at east and west, land at north and south. A river goes from east to west following the mountain. That means ...
4
votes
2answers
1k views

What would a planet with little to no greenhouse gases be like?

Say if a planet had either no greenhouse gases or a small percentage of a certain greenhouse gas (roughly 5% or less) in its atmosphere, but all other elements in the atmosphere could support life. ...
4
votes
2answers
455 views

Could a planet with three-quater earth gravity and neon-/argon-based atmosphere exist, and what would life do with it?

I'm creating a world three-quarters the gravity of Earth, and the composition of the atmosphere are as followed: 74% Neon (or Argon) 18% Nitrogen 5% Oxygen 1.6% Carbon Dioxide 0.9% Water Vapor 0....
4
votes
2answers
193 views

Can neon glow by some natural means?

Could neon or argon glow naturally in any way? What would be needed in the atmosphere? P.S. Please don't change my question?
4
votes
2answers
247 views

Greenland--Not So Green Anymore

Back home, there are three factors to consider: Mont Forel, Greenland's tallest peak, can be found in coordinates 66.9333° North and 36.8167° West The Arctic Ocean's average depth is 3406 feet, 17,...
4
votes
3answers
95 views

Do humans have the technology necessary to stop the Gulf Stream?

Assume an evil dictator has taken over the whole continent of North America. He has the entire modern array of technologies at his disposal and plans to take over Europe. An evil plan comes into his ...
5
votes
2answers
239 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 ...
4
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3answers
2k views

What would happen if there was no Antarctic Landmass?

I understand that Antarctica plays a large role in driving ocean currents and thus the climate of the planet. However, I'm curious what the world would be like if there was no Antarctic landmass at ...
15
votes
1answer
838 views

Creating a realistic world - Thermohaline circulation

One crucial aspect of the climates have been left out so far, deep water circulation. It's the major force driving the heat transfer form the equator to the poles and its flow can influences local ...
-1
votes
2answers
205 views

How would a north-south rotation affect the ocean? [closed]

In my worldbuilding, I have physically moved the whole Old World (Africa, Asia, Europe and Australia) so far eastward that the Prime Meridian is in Europe's farthest city, Lisbon, rather than ...
28
votes
11answers
23k views

Explaining uphill rivers scientifically?

I see this in so many maps. Normally, the water flows downhill because of gravity but here it is the opposite, rivers will go above the hills. When you mention this incoherence, the authors refuse to ...
5
votes
4answers
344 views

All the rivers run west

I'd like to construct a planet where the rivers all run east to west, but I need a plausible reason for them to do so. Rivers run from high altitude to low, but also I suppose there is the coriolis ...
53
votes
3answers
19k views

Creating a realistic world map - Currents, Precipitation and Climate

Once geological processes and erosion have created a landscape this landscape will in turn alter the planet. Ocean currents and trade winds will tend to form and certain weather patterns will emerge. ...
38
votes
4answers
7k views

How (un)likely is a split of one major river into two others?

I inherited a worldbuilding project, and the former authors liked some things that seem unrealistic. One of them is that one of the world's biggests rivers splits into two other rivers some 300-400 ...