rix_scaedu: (Flower person)
[personal profile] rix_scaedu
A hand drawn map on large grid paper, mainly blank as it is a woork in progress.  It is also obviously half of a larger document
This is the western half of the map I posted yesterday. This time I have managed to get it into Dreamwidth. Obviously I do not do pictures here often. For a readable version, I suggest the Patreon post of this which is here.
The distance scale is in kilometres, because after about fifty years of the metric system that is how my mind processes long distances. One square is 500 kilometres.  I am still not certain how long an Imperial league is but it was pointed out to me by a kind reader yesterday that if I make an Imperial league equivalent to five kilometres, then it will both make it roughly the same as a real world league and give me 100 Imperial leagues to the grid square. This is an idea that has merit. Also, the real world league measurement really is one of those things where you have to ask specifically where and when to find out how far they were talking about.

Date: 2023-09-02 05:17 am (UTC)
kengr: (Default)
From: [personal profile] kengr
Well, I see that this is definitely not a near alternate Earth. And the Circle sea is one heck of an impact crater. Given the size, it's a wonder the planet survived, much less still had life.

Also, I've been thinking about that post the other day about the gas releases (or whatever) killing settlements. It is very unlikely to be hydrogen sulfide release like some tropical lakes have.

That's because those rely on the surface temp never getting to 4C or below, and thus preventing turnover between the bottom layers and the top. In a sea like that, you almost certainly have deep currents flowing from the colder areas to the warmer ones and thus causing circulation anyway.

On the other hand there might be deposits of methane clathrates which is "jolted" right could release massive amounts of methane which would have much the same effects.

There would be ways to do the hydrogen sulfide bit anyway but that gets a bit trickier (either needs odd bottom topography, or volcanic activity). Or some other handwavium I haven't thought of. :-)

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