World Map: Sea Topography - Worldbuilder’s Log 26

[@itisALWAYSR.A.]

One of the things I like about this series is that Edgar is very humble about admitting when he doesn't know how to do something and is following tips himself. It makes it easy to know when he's speaking of experience, and when he's going "yo I'm learning this with you if you find or know alternative methods plz share". It's very reassuring, since sometimes content creators don't make the distinction and it all comes over sounding the same. This way instead is absolutely a strength.

[@DanielCrabbprn]

In the world I am building one of the sapient species is aquatic, so ocean topography is actually important, so thanks for not skipping this.

[@rcrumpet]

every time this man releases a video my whole day gets 10x better

[@skylark7921]

Omg realizing after the fact how much time you spent drawing - I felt that 😂 At one point I was drawing for ~11 hours straight and didn’t even realize until I stopped

[@FulgrimDragon]

This series is incredibly educational, not just from a creative and technical stand point but I’m learning so much about earths history(and just science in general) too, and I’m here for it. Keep up the great work I adore this series and look forward to myriad of other topics you’ll soon cover!

[@trischas.2809]

RE 2:40 - the tearing is a residual effect of the pixels that make up the image. You can reduce it by having finer pixelation, but not totally remove it. To get rid of it, you might have success using a very light smoothing modifier.

[@daniel_rossy_explica]

Would antialiasing work?

[@nahoj.2569]

Blender Shader nodes has an option for the smoothing algorithm used for an image texture. you can make textures smoother or pixel perfect. (closest square, i think) The preferences also have a hidden option for this, which i used when doing something similar to what he is doing.

[@rawkeh]

Could also be just low mesh resolution. A level 3 subdivision surface modifier should help.

[@trischas.2809]

@@rawkeh before applying the color depth effects.

[@Dan_1764]

In Blender, you can get a better globe by starting with a cube, then using the "To Sphere" command. This makes the triangles of the "sphere" to be closer to the same size. Then the uv map won't stretch nearly as much at the poles. If you want an example of this done, Kerbal Space Program planets do this. The seem you got, you'll need to recheck that the displacement\texture map tiles correctly from one edge to another. grammar edit

[@noahclinch3241]

If you would like any ideas of what to add to Jannar, Perhaps the mantle under the continent could be upwelling causing the continent to have a topography similar to what we see in Africa. its already rifting apart like how Africa is, maybe it would have plateaus like Africa too.

[@metagames.errata7777]

"Ooh! New Artifexian video! ... Hey, wait, it feels like it's been a while. I know the ocean's big, but did I miss an upload? No?" "Soh it took me, like, twenty-fohr hours, just to dtrah dtees lines."

[@ATOM-vv3xu]

finally a new episode! btw in my world the oceans are where half the stuff happens, so this is an interesting topic for me

[@morgan0]

the lack of detail and weirdness in the hightmap in blender is probably because the mesh isn't fine enough. if you subdivide it a couple more times it should be a lot less apparent. also with you mentioning another round of this in the future, i think you should try painting a heightmap directly. you could threshold it to get sharp lines for this style, but you could also use it directly within blender to get a better high relief globe model from it. it could also be easier to make changes like changing elevation of a region because you could add/subtract to the heightmap instead of redrawing all the vectors.

[@javierhillier4252]

btw the bigger a planet the smaller mountains will be on the crust, as the gravity will be stronger, and pull martial level quicker than upward forces pushing the mountains up from tectonic collide

[@wednes3day]

It might also be interesting to note .. I've been watching some surfing videos about why some regions get major waves, and one interesting setup off the coast of Portugal is an area where there's a bit of a valley cut into the transition to continental shelf (idr why) that funnels water masses arriving from the Atlantic into narrower and narrower spaces as they approach the shore ..... Could be interesting to society build around something like that! Also joining the crew of folks building underwater worlds for who this is extra relevant

[@Stephen-Fox]

Well, just finished binging this series. Very fun - I tend to find this sort of world-building project more interesting to view when the processes are depicted rather than just the outcome (I mean, don't get me wrong, I enjoy looking at details of the results of speculative evolution, but I find stuff like Biblaridon's step by step Alien Biospheres approach to presenting a speculative natural history more engaging, which so far this basically has been but for geology and planetary conditions. Minus a 12 part GPlates tutorial (not a complaint))

[@idle_speculation]

I think he's going to get into a Biblaridion-style project once he's done modeling everything for the geology and climate.

[@Dragrath1]

Regarding the mountain ranges that was the right choice as that the main way continents get built up is the deposition. This is also unfortunately relevant for the oceans Sea levels are complicated as hell since sea levels can change on their own due to changes in sea floor spreading rate so yeah its a bit messy. Another thing to keep in mind with LIP formed oceanic plateaus is that they generally involve so much material that when they reach a subduction zone a good amount of the plateau is going to get added and or docked to the continent rather than all subducting down. As a result when this happens you get basaltic crust welded on top of continental material such as parts of Oregon and Washington state including the Olympic Peninsula formed from half of the oceanic plateau associated with the Yellowstone hotspot Siletzia or parts of Columbia. There are also places today where the subduction and accretion of oceanic plateau material is ongoing namely the Ontong Java plateau and the Yakutat terrane currently colliding with the Aleutian trench . Yakutat appears to be/have been the sister half to Siletzia a consequence of their parent hotspot having been emplaced along the East Pacific Rise. So one shocking fact I learned is that we have only measured 20% of the sea floor to high enough resolution to discern most topography. There was a recent published survey involved in raising it to that 20% total and it sharply increased the number of known seamounts by a few hundred while also providing evidence to support the hypothesis that open ocean deep upwelling zones are caused by seamounts. Another point worth reiterating is that not all oceans are the same and that is going to be affected by the topography and zones of erosion anywhere upstream from active mountains . The Pacific is notably not only vast but the fastest spreading ridge on the planet and ac cording to seismic tomography the feature appears to have quite deep roots in the form of a vast discontinuity in the solid mantle below the fluid asthenosphere layer spanning down to at least the Mantle Transition Zone that divides the upper from lower mantle. As a consequence hot spot volcanic islands don't easily stay above sea level unless they have fairly high intensity eruptive activity. Also this ridge system appears to underlay North America's basin and range province and the zones of current intermittent volcanic activity and naturally explaining the widespread region of clockwise rotation since the ridge associated discontinuity below NA connects the Juan de Fuca ridge and East Pacific Rise with the snake river plain Yellowstone the boundary separating the Colorado plateau from the Laurentian shield it used to be a part of etc. The deep craton and bulk of NA as a whole appears to still be on the north to eastern sides of this discontinuity along with the scrunched up subducted slabs with only the upper part of the continents crust really able to still get pulled to the southwest by slab pull so It is almost reminiscent of a ship wrecking on a vast reef just played in slow motion of tens of millions of years. An example of the opposite perspective is the Arctic ocean and its main spreading center Gakkel ridge which is quite frankly one of the most bizarre places on Earth as the magma erupted is relatively cold with very low rates of seafloor spreading. The consequence of this is that while normal ridges erupt predominantly effusive hot basalt Gakkel ridge also erupts relatively cold chemically evolved magmas including types of magma usually seen in subduction zones including the formation of stratovolcanoes lava dome complexes and calderas all deep underwater at abyssal depths. In terms of sedimentation note that in areas of high erosion and thus sedimentation such as the Cascadia subduction zone the rate of sedimentation there is actually high enough that it has effectively filled in the ocean trench. In general the thickness of sediment on ocean crust downwind/down stream from continents is measured in hundreds to thousands of meters while far away from land sedimentation rates are negligible enough that barely any sediment gets added over millions of years. This sediment does consolidate over time becoming denser with time and especially as new layers are added on top which actually plays a role in raising the density enough to initiate subduction which is why there is no ocean crust older than around 170 million years. One more major factor that for an Earthlike setting ought to have received some attention is the formation of reefs by carbonate secreting organisms these play a major role in establishing modern coastlines and keeping seamounts high in elevation above the surrounding seafloor long after volcanism has ceased. Their locations are going to depend on the climate over time and the ecology of reef builders, i.e. what temperature and salinity do they need so I can guess this is why they were left out but ignoring them would make Earth an unrecognizable planet as on Earth 15% of the land area is karst not counting the active reef complexes of the world which today are at least for now still dominated by shallow water tropical corals with symbiotic algae. (Though anthropogenic climate change is devastating them to the point where if nothing is done they are likely to be driven extinct for similar reasons as the carbonate reef builders were wiped out during the Great dying/end Permian mass extinction). That said the carbonate reef builders have not only changed over time but in the case of the Great dying(end Permian mass extinction) all such reef builders were driven extinct thus reef building didn't resume until the trait had re-evolved during the Jurassic. There are many different kinds of reefs but their role on geology can not be denied as without them there would not be any limestone caves for example. ;)

[@zandrex1776]

Babe wake up, new Artifexia's episode just dropped.

[@Denneth_D.]

That meme isn’t funny anymore

[@KCRileyGyer]

Since the dislikes are no longer useful, create one comment for ‘yay’ and one for ‘nay’, and the one with the most likes is the verdict. Enjoying the series, thank you.

[@pointyorb]

I wanna incorporate deep sea biology into my world so even though this is from a year ago I'm still grateful that you didn't skip it.

[@lordbird4165]

This made my day :3

[@Lilas.Duveteux]

With all those mountain ranges and geo-configuration, I wonder what kind of climate would be in this. Because, if they aren't too harsh, the lake in the middle of the large continent may form a very interesting civilisational bassin, so is the East Ward sea. Plus, imaginging merpeople would make it even more interesting.

[@yellowbutterfly6796]

(reads description) yarrgh 🦜 off we go, sailing these mighty seas ⛵️

[@wednes3day]

Drink up me hearties, yo ho~

[@volcryndarkstar]

Love the terrain glow-up. Nice work, my guy.

[@GeodeCrowley22]

I'm pleased with this video! I'm also pretty excited for the next two, tbh!

[@Great_Olaf5]

The reason why youtube can't display dislikes on comments is because it doesn't actually store them anywhere. The button exists purely to make you feel good in the moment of clicking it.

[@EcclesiastesLiker-py5ts]

That isn't true, there are plugins that exist which display how may dislikes there are, they would only be able to show that info if the info was stored.

[@Great_Olaf5]

@@EcclesiastesLiker-py5ts on comments? I know they exist for videos, but I've dug around before, and everywhere I've looked the consensus seemed to be that youtube just doesn't store comment dislikes anymore. Admittedly that research was four or five years ago, so people might have found otherwise since...

[@Hwelhos]

​​@@Great_Olaf5 i thought creators could see dislikes on comments to but its weird they cant

[@Great_Olaf5]

@@Hwelhos... That was literally what 8 was commenting on. The section at the start of the video where he was talking about not being able to do that...

[@EcclesiastesLiker-py5ts]

@@Great_Olaf5 Oh, you make a good point, I didn't consider that comment dislikes might be treated differently. I wouldn't know about that.

[@nathanMangion_Elyden]

lovely stuff!

[@TAP7a]

Artifexian & DIY Perks in one day? ‘Tis a good day

[@GanoGaming]

This looks just so insanely good!

[@idle_speculation]

Just wanted to say that this video is the 22nd result when you search "Sea Topography" on KZbin. Far above many actual videos on ocean topography. Congratulations.

[@Whiffle09]

15:06 session 2!?!?

[@dumplingsuwu6691]

Love seas 🌊

[@robandrews1106]

Beautifully done! Have done similar and appreciate the effort. Great explanation!

[@randomguy568]

Hey Edgar, I just noticed that on the WorldSmith, you used different calculations in different places for the orbital period of the planet. sometimes you used 2.4, 2.422, or 2.56, which is a bit confusing and was messing with me for a while before i figured out what the problem was. Other than that, I am really enjoying your videos about making your own planet, and has inspired me to get into it as well. Keep it up!

[@dayalasingh5853]

I could sense in my bones it was time for a new episode

[@Dorsidwarf]

very nice, though continental shelves do seem a little narrow?

[@shadowsfromolliesgraveyard6577]

All your continental shelves are really narrow, but there's some pretty wide ones on Earth, how do those happen? Is there a way to get a good feel for where to put them if I want them on my map?

[@TheRaptorsClaw]

This is my question too, I never know where to extend a shelf and where to have it hug the coast.

[@Jpteryx]

Wide continental shelves should be present on passive margins where the land isn’t being uplifted. Africa has a lot of passive margins, but it’s being uplifted due to the rift running through it so it has small continental shelves. However, Europe and eastern North America hare passive margins without uplift so they have big continental shelves.

[@zfloyd1627]

20:00 unless someone's fictional world has an underwater civilization.

[@AaronGeo]

Wdym by "Season 2", Edgar? 15:04

[@sameer1321]

Great video ❤👍

[@sethbettwieser]

I have a question. How can we calculate the water content (including water vapor %) of our world? The worldsmith sheet doesn't seem to have anything for that.

[@Vallee152]

Dislikes on community posts and comments used to work, but then Google wanted to integrate those things into (the now defunct) G+, which didn't support dislikes, so they just removed the functionality.

[@ohd4635]

i feel like hes adding lots of cool stuff around the north poll which wont be seen cos itll all be under an ice sheet

[@AntipaladinPedigri]

7:39 why does Exxon own an entire sea? Who let them?

[@vinx.909]

damn, sadly this won't be the place to get some info on a water world. anyone know any sources i could turn to? i'd love to do a geologic history of my underwater world but i have no idea where to start looking.

[@tyjamison2751]

What changes were made in GPlates to get smoother (non-flashing) plate boundaries?

[@Ray-Chippy-Owens]

I'm loving the series and am so greatful for you for explaining what sometimes looks like a page of words to me when researching. I was wondering, how would you go about sea level changes if a large country simply apeared on your world? Basically, in my DND campain, my huburis got the better of me and set up a situation where by my players managed to have the country of Cyre form Eberron, a dnd setting, magically appear or "dumped" on the planet. Part of another country was taken as a result and obviously magic is kind of handwaving it being possible but I was wondering if you had any ideas as to how that might be represented as a result. Would you "hand wave" tectonic plate interations and simply raise the sea levels a bit or do you have any other ideas?

[@Dragrath1]

While there isn't really a normal way to sell this as a natural plate tectonic process you can in principal use our understanding of plate tectonics to gauge how a world which follows plate tectonics would respond to the change. Notably you would have the huge displacement of water which would result in a Tsunami a meteotsunami(like a tsunami but with air) and probably some kind of corresponding Earthquake unless the magic prevents that but before we can get to that we need to know a bit about the geology of Cyre and the target area as well as a bit more about how Cyre magically appears i.e. what teleportation rules and conditions apply the constraints being that presumably you want the new arrivals to survive meaning its definitely not coming in at too high of a velocity. The stuff that gets displaced probably also matters as unless its dropped from some height in the sky presumably we will want "safe" teleportation rules to prevent the horrible deaths of everyone involved as their bodies get grafted into a mountain. How doomed anything originally in the target region will be obviously depends on the answers for the above questions. Personally I'd probably pop it in just above the target region and then subject anything originally there to a correspondingly big ass heavy rock which should probably be enough to kill most entities there unless a particularly powerful entity was in its path. The exact level of you are probably dead will depend on the exact composition of said island probably only bothering with the bulk average composition This weight will be important for knowing the fate of the target rock as if the potential energy exceeds the threshold to melt the underlying rock you can get volcanism too because volcanoes. :D The weight on longer timescales is going to shift to accommodate the weight which will probably result in the underlying land slumping and in the case of the continent which had terrain displaced it may even get tipped/tilted a corresponding degree but these effects would play out on thousands of years and thus probably not be immediate problems aside from maybe increased seismic readjustments of the land.

[@Omega-mr1jg]

Hey artifexian, i actually have my own set of rules to follow for creating resources but i usually use somewhat badly guessed rock type formations for my maps to really make them, so could there possibly be a video made on how rock types form?

[@Dragrath1]

This would be useful though having binged on geology its safe to say its a monumental task as rock strata get very complicated especially at active margins or areas which have gone through long enough timescales to experience such effects

[@OnLowBattery]

Sending you an email. I'm a blender user so I've added a small video tutorial and a shader that creates procedural planets

[@seyeruoynepotsuj]

Isn't old crust usually so worked and reworked (metamorphosed and the like) that it's cratonic and much more BUOYANT? I'm jumping into this series here so don't know if you've explained elsewhere, but why is your old crust below sea level?

[@theorixlux]

The google docs link only opens up my docs homepage. I don't see any error when the webpage loads up.

[@4984christian]

Can you include something like the north see in europe? where there is extremely flat ocean?

[@yuvalorp]

Something that is missing for me is that there isnt anything special in this world like anusual solar system or topgrafic feature that you cant find on earth like 10 kilometres mountain, you try so hard that it will be like earth that it becomes a bit boring

[@decewil3767]

Is the link broken for anyone else every time I click it it goes to the doc home page

[@SlushieeeeTheCatgirl]

I wonder if on the 30th ep He will start on the Speculative evolution.

[@deerglx4732]

I think Biblaridion's the resource for that

[@Dragrath1]

Technically as karst terrain accounts for 15% of the land area on Earth and well we don't know how much under water as only 20% of Earth's oceans have been mapped but of what we have rough estimates mapped the amount of reef area amounts to 1% of the ocean spec biology is kind of needed to get an accurate measure of Earth tectonics since most carbonate rocks are the product of biomineralization of carbonates. Depending on what conditions the reef builders of a time need to thrive where the reefs form is going to vary with the most notable example being the absence of reefs after the end Permian mass extinction a.k.a. the great dying as it would take until the Jurassic for reefs to return to the fossil record as animals had to re evolve the traits to do so. And those coastal reefs of the Mesozoic were quite different from modern reefs as they were built from enormous clams known as Rudists which lived in sunlit waters where they hosted symbiotic algae mush like modern tropical coral reefs the latter of which moved in from the deep sea reef environments they originated to fill the then vacant shallow water reef builder niche.

[@SlushieeeeTheCatgirl]

@@deerglx4732 Heres the thing, in the intro video i believe he said he'd do BOTH.

[@deerglx4732]

@@SlushieeeeTheCatgirl oh, so maybe we'll see him collaborate with Biblaridion on that then (which would be nice)

[@yuvalorp]

How can I get a elevation map of your world?

[@Amipotsophspond]

just take a weekend and learn all of Blender. it might take you a bit longer then a weekend... you are doing fantastic even professionals learn new parts and tricks with blender everyday.

[@Whiffle09]

Can I help with the speculative biology please, it’s a “hobby” that I enjoy

[@ajgibson1307]

God bless

[@theholywater]

nice

[@DanielCrabbprn]

Season 2!

[@Zhaobowen]

Return KZbin Dislike add-on for Firefox. As of 7/31/23, the poll was 1,036 Likes to 4 Dislikes.

[@lizardude9114]

Do sky next

[@pudgydog00]

Last video , 1K likes, 4 dislikes. I am using Windows Firefox with the Return KZbin Dislikes extension.

[@saarthel8532]

Are you gonna talk about sea currents?

[@daddyleon]

Or: post two comments? Or is the key to pin them? Then again, the liking makes them rise to the top, I think? So no need to pin them..

[@rickmorty2500]

1st

[@MichalP-cm8ff]

hi im 10th!