What started the knock up stream and how does the land/Vearth stay with Skypeia?

[Warmmedown]

Why doesn't the Vearth fall again? Did the WG somehow cause the knock up stream? Or maybe a pirate?

 

[Fantastische Hure]

I can’t remember fully (& can’t currently be bothered to look-up) but wasn’t it stated it was some sort of natural phenomenon?

 

[sei'taer]

There are two completely different currents under the ocean. Which can probably explain both why the Uranus holes don't fill in and why suddenly huge bursts of water pop up from the bottom.