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[Warlord255]

Riddle me this.

Ice walls are natural. Natural walls, when caved-in, can form a new natural wall where it lands.

If I use a pump to generate an ice wall over the ocean and subsequently drop it, would it be possible to use this and make a shell for a tower?

[Quatch]

Try it and tell us?

[Quietust]

If the ocean itself isn't already frozen, it's likely that dropping ice into it would cause it to melt once it hit the bottom.

[Warlord255]

If the ocean itself isn't already frozen, it's likely that dropping ice into it would cause it to melt once it hit the bottom.

But salt water never freezes.

[Salmeuk]

But salt water never freezes.

http://www.waterencyclopedia.com/Re-St/Sea-Water-Freezing-of.html

Does temperature transfer between objects in DF?

[Warlord255]

But salt water never freezes.

http://www.waterencyclopedia.com/Re-St/Sea-Water-Freezing-of.html

Does temperature transfer between objects in DF?

For the purposes of DF, salt water does not freeze.

[Albedo]

But "doesn't freeze" isn't the same as "freezing". 

The question is not whether salt water freezes, it's whether salt water gets cold enough to maintain existing ice.

Does temperature transfer between objects in DF?

In some cases, yes, such as magma warming nearby ice - but it's not clear if the temp is actually "transferred" or it's just modeled to appear that way.

[Salmeuk]

That's what I thought.

I guess we just need someone to try this out now.

[Kern]

But "doesn't freeze" isn't the same as "freezing". 

The question is not whether salt water freezes, it's whether salt water gets cold enough to maintain existing ice.

If it's already cold enough for ice to form, shouldn't it be? Not freezing isn't the same as not getting cold

[Puzzlemaker]

Huh, this is an interesting idea...

[Typoman]

But "doesn't freeze" isn't the same as "freezing". 

The question is not whether salt water freezes, it's whether salt water gets cold enough to maintain existing ice.

If it's already cold enough for ice to form, shouldn't it be? Not freezing isn't the same as not getting cold

no. not at all. saltwater's freezing point is below zero, in some cases well below. so ice would not form unelss it is REALLY cold. if you place pre-frozen plain water in it though it will stay frozen. if it isn't frozen already, i really don't know wether it would mix quick enough to not freeze. though truthfully it can become cold enough to turn thrown boiling water into snow before sea-water will freeze [kidding]Anyone who is currently on one the polar caps please find the nearest bit of sea and pour some standard water into it, if you can manage to keep it liquid long enough and tell us what happens.[/kidding]

of course this is real life stuff, what happens in df could be entierly different. it does seem to operate on slightly different physics after all

[Kern]

if you place pre-frozen plain water in it though it will stay frozen.

That's what I meant, if you already have freshwater ice and you drop it into the ocean, I'd assume the ocean is already cold enough to maintain (and not thaw) the ice since you have any kind of ice in the first place

[Mr.Elendig]

But "doesn't freeze" isn't the same as "freezing". 

The question is not whether salt water freezes, it's whether salt water gets cold enough to maintain existing ice.

If it's already cold enough for ice to form, shouldn't it be? Not freezing isn't the same as not getting cold

no. not at all. saltwater's freezing point is below zero, in some cases well below. so ice would not form unelss it is REALLY cold. if you place pre-frozen plain water in it though it will stay frozen. if it isn't frozen already, i really don't know wether it would mix quick enough to not freeze. though truthfully it can become cold enough to turn thrown boiling water into snow before sea-water will freeze [kidding]Anyone who is currently on one the polar caps please find the nearest bit of sea and pour some standard water into it, if you can manage to keep it liquid long enough and tell us what happens.[/kidding]

of course this is real life stuff, what happens in df could be entierly different. it does seem to operate on slightly different physics after all

Eg rain or a river outlet often only partly mixes with the sea water, and forms a layer of less saline water on the top, which freezes earlier than ther rest of the sea. It is not uncommon to see ice form first in fjords and near river outlets. Also, the sea can often freeze over earlier if there was a period of rain just before the cold set in.  That's my personal experience anyway.

As for the op, I think it will work. Try it(tm) and find out   bucket brigade ftw!

[Shurhaian]

The salt in the ocean can affect the (freshwater) ice, though. Just as salting icy roads can thaw them unless it's super-cold.

So it'd make just as much sense for ice hitting the ocean to melt and mix with the salt water.

Interesting to try and see, though...

[Albedo]

That's what I thought.

I guess we just need someone to try this out now.

More info-

I was breaching a multi-level aquifer using magma/water.  After channeling out a layer of obsidian, about 85% of the remaining obsidian shell - which was nowhere near any active magma, registered as "warm stone". 

So, apparently, there is some actual modeling of heat transfer, to one extent or another.

(There are other elements in the game that imply a fairly complex modeling going on behind the scenes, esp w/ temperature, from observing weather and its effects on diff things.)