Questions tagged [currents]

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

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How would the ocean currents of a tidally locked super-Earth work? [closed]

Suppose for a moment that a large planet orbits an M0 red dwarf star (51% as wide, 60% as massive and only 7% as bright as our sun). It itself is 230% as wide and 700% as massive as Earth. There is ...
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10 votes
1 answer
139 views

Realistic Ocean Currents on a custom world

Hey I've been trying to map out some ocean currents for a planet I'm creating, called Kalmoren. I've been following an artifexian tutorial however he seems to split gyres based on the circulation ...
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8 votes
5 answers
542 views

What negative effects would stem from a world having many inland seas rather than large connected oceans?

My fantasy world Treyidal is a planet inhabited by two races, humans and merfolk. They live on a very seismically active world, with such things as micro-magic based earth quakes. For the moment we'll ...
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4 votes
1 answer
230 views

Migration of seeds between continents

In my story, life is disappearing from every continent of the world, from small animals to great sequoia trees, except for bacteria, of course, and marine life. except for one continent: Antarctica. ...
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3 votes
1 answer
344 views

Would there be ocean currents in oceans of sulfuric acid?

Would there be ocean currents in sulfuric acid oceans? For my world the oceans are made of sulfuric acid because of the high amount of sulfur in the atmosphere, and I was wondering whether there would ...
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4 votes
3 answers
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Can someone please doublecheck my ocean currents map?

Just looking for another knowledgeable eye to see if they see any glaring errors with my ocean currents. The world is the same size as Earth, rotates the same direction, same prevailing winds, only ...
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1 vote
1 answer
135 views

What would the Climate effects of a Circum-Equatorial current be on a world with 0 degrees of axial tilt

The basics of my worlds oceanography is that there is one large ocean that covers one side of the world completely, and in-between the northern and southern continents on the other side of the world, ...
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4 votes
2 answers
193 views

I need help with my ocean currents

I haven’t really ever gotten this far in worldbuilding, and I’m kinda stuck on ocean currents. My world has lots of tiny little islands that are on 2 slightly submerged continents (around 3 metres ...
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5 votes
1 answer
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How can I make my climate zones more realistic?

I've been trying to come up with some climate zones for my earth-like planet for a while now- Ocean and wind currents are basically like for like with earth- and- this is about the third iteration I'...
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7 votes
7 answers
1k views

What ocean geography causes bodies to "disappear"?

Long story short: a cultural tradition of this (late medieval/early renaissance-ish) civilization is to put their deceased in a casket/boat/raft, and float them out into the ocean. Their belief is ...
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4 votes
1 answer
122 views

Do all ocean currents create gyres?

I am getting close to being done my ocean currents, so I would like some constructive criticism/critiques to see where they can be improved before I move onto the next step of my worldbuilding project....
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4 votes
1 answer
244 views

Are these ocean currents realistic for a planet that rotates 16 times slower than Earth?

Ocean Current Map: The straight red lines are 60* North and South, and the straight blue lines are 30* North and South. The curved blue lines with an arrow represent cold currents, while the curved ...
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3 votes
1 answer
207 views

What would the currents of an ocean world with no continents look like?

This is an earthlike planet in every respect (same 24 hour day, same orbital year, etc) except it is an ocean world. There are no continents, and the global ocean is significantly deeper (10 miles, or ...
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2 votes
2 answers
229 views

What Would the Arctic Ice Caps Look Like in This Current Map?

This is a map of my alternate Earth with a focus on ocean currents, courtesy of Mikael Asikainen: As you can see here, Greenland looks smooshed, but that is because it is arranged to the extent that ...
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2 votes
2 answers
222 views

The 42-Hour Day: Episode I: Ocean Currents

Presented here is a map of an alternate Earth from 542 million years ago. It is 5% narrower in diameter and 20% lighter in mass than our Earth. A single day lasts 42 hours, a cycle that it must ...
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4 votes
2 answers
447 views

Are my ocean currents passable?

(Excuse the mess, as this is just a rough draft I drew up in CC3+. If it needs to be tidied up, just let me know. Bright red and dark blue arrows indicate wind direction.) I was marking the ocean ...
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15 votes
5 answers
883 views

An Aztec ship sails east - where does it land?

Given: An ahistorically powerful and advanced Aztec civilisation, anno late 1400s. A set of circumstances much like the ones that led Columbus west: one mad Aztec convinced the world was rather small ...
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5 votes
4 answers
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Could a large enough fleet generate tsunamis while moving from a place to another?

Imagine similar earth conditions of oceans and currents, and a renaissance type kind of ships of various sizes (ranging from sloops to ships-of-the-line), could a fleet consisting in 1500 (aprox.) ...
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3 votes
2 answers
537 views

Are the ocean currents and climate zones of my world plausible?

So, I'm making my first stab at worldbuilding, and I got this idea for a largely water world with only a single continental landmass, a little smaller than Africa in terms of land area, roughly ...
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6 votes
2 answers
158 views

In what ways a higher level of oxygen (23 to 25%) and higher pressure (1,7 time the earth air density) would affect winds and ocean currents?

From some research, I have learned that atmospheric circulation - winds currents and ocean currents - depend on pressure and the Coriolis effect. But if the oxygen level is increased and the pressure ...
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6 votes
1 answer
279 views

Ocean currents near the poles

I'm trying to create a earth-like world, with different land masses. I want to make a realistic climate scheme and determining ocean currents is a part of this. I've done some research on ocean ...
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9 votes
2 answers
210 views

Could Xenarthrans Be Ferried Outside South America?

Right from the beginning, the xenarthrans--armadillos, sloths and anteaters--have been at a disadvantage. For the longest time, their home was an island continent, which made them extremely ...
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7 votes
1 answer
319 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 ...
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8 votes
1 answer
184 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. ...
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5 votes
1 answer
332 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 ...
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6 votes
3 answers
411 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 ...
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5 votes
2 answers
269 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 (...
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3 votes
2 answers
300 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 ...
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63 votes
9 answers
15k 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 ...
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5 votes
2 answers
260 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 ...
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1 vote
2 answers
157 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. ...
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2 votes
3 answers
2k 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 ...
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4 votes
2 answers
2k 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. ...
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  • 321
4 votes
2 answers
878 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....
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4 votes
2 answers
282 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?
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4 votes
2 answers
271 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,...
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4 votes
3 answers
99 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 ...
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5 votes
2 answers
361 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 ...
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4 votes
3 answers
3k 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 ...
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15 votes
1 answer
1k views

Creating a realistic world - Thermohaline circulation

This Query is part of the Worldbuilding Resources Article. 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 ...
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-1 votes
2 answers
215 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 ...
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29 votes
11 answers
26k 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 ...
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5 votes
4 answers
445 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 ...
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57 votes
3 answers
27k views

Creating a realistic world map - Currents, Precipitation and Climate

This Query is part of the Worldbuilding Resources Article. Once geological processes and erosion have created a landscape this landscape will in turn alter the planet. Ocean currents and trade winds ...
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43 votes
3 answers
11k 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 ...
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