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#1 2020-07-23 11:15:32

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 7,252

Underwater Research Facility Space Habitat Simulation

There have been undersea research facilities on Earth before now.

This latest plan seems designed from the outset to provide significant parallels to life in Space or away from Earth.

https://www.yahoo.com/lifestyle/voyage- … 02447.html

SearchTerm:CosteauUndersea

The intention to build a greenhouse into the facility seems most applicable to the Mars situation.

The use of LED light seems likely (to me at this point) but perhaps there will be some sunlight penetrating down from the surface.

If that is the case, it would be supportive of Calliban's visions of underwater habitats on Mars, in one of Void's lakes.

(th)

Last edited by tahanson43206 (2020-07-23 11:17:51)

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#2 2020-07-24 14:52:40

Void
Member
Registered: 2011-12-29
Posts: 3,881

Re: Underwater Research Facility Space Habitat Simulation

An interesting article. (th).

Dr. Robert Zubrin thinks that open sea Mariculture will be in the future for Earth.
https://en.wikipedia.org/wiki/Mariculture
In this case nutrients are added to water, such as a form of Iron that would stimulate the growth, of Phytoplankton, Zooplankton, and then fish.

I also think that there may be a case for growing food plants in the sea, Kelp and such and perhaps some vascular plants.

I recall that experiments indicate that mesh structures that such could anchor to, did very well at a depth of about 6 feet.  That is a recollection from decades ago.

For that, I guess that you would need methods to lower the frames in stormy weather.  You may want to control what types of sea animals may have access to it as well.  So, for that, you would want control centers to monitor, and a repair crew to maintain the structures.

Growing plants should be rather productive, as for open sea Mariculture, the Zooplankton eat the Phytoplankton, and then at least 1 level of fish eat them before they would become food for people.  I believe that that is a reduction of biomass of about ~10/1 for each stage, so in the end ~1000/1 per unit of fish, at least.  Some cultures already like seaweed for food already.

And yes, someday if we have cheep fusion power, it may be that there will be artificial lighted gardens in the sea, and maybe even vascular terrestrial crops, in an air chamber.

Done.

Last edited by Void (2020-07-24 14:55:07)


I like people who criticize angels dancing on a pinhead.  I also like it when angels dance on my pinhead.

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#3 2020-07-24 15:00:28

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 7,252

Re: Underwater Research Facility Space Habitat Simulation

For Void re #2

Thank you for noticing this new topic, and for your visions of mariculture on Earth!

I had to add that term to my dictionary!

This topic is offered for us (forum members and readers) to keep an eye on this research initiative.

I am particularly interested in the implications for Mars, in which case the underwater enclosed habitat greenhouse would be a better fit than the luxury of an ocean of water.

In other topics, you (in particular) have been developing visions of large quantities of water on Mars, and I can see how mariculture would fit in that kind of situation.

(th)

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#5 2020-07-27 04:02:47

elderflower
Member
Registered: 2016-06-19
Posts: 1,262

Re: Underwater Research Facility Space Habitat Simulation

For Void.
I understand that the 10:1 ratio for prey/predator applies where the predator is warm blooded. For cold blooded creatures it is more like 3.5:1. Being warm blooded is energetically expensive.

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#6 2020-07-27 11:46:35

Void
Member
Registered: 2011-12-29
Posts: 3,881

Re: Underwater Research Facility Space Habitat Simulation

Garbage in Garbage out.

Thanks for the corrections.  I acquired that number many decades ago, and sourced it from my memory.  Update correction completed smile

Still it does indicate that for biomass to humans, it is better to get in as close to the beginning of the food chain as possible.

But yes again, thank you.

Done.


I like people who criticize angels dancing on a pinhead.  I also like it when angels dance on my pinhead.

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#7 2020-07-28 09:47:33

elderflower
Member
Registered: 2016-06-19
Posts: 1,262

Re: Underwater Research Facility Space Habitat Simulation

You are right, Void. The further down the food chain you can get the more resources are available, but this must be balanced against the difficulty of obtaining nutrition from the low levels of the chain. No warmblood that I know of eats copepods, never mind planktonic algae. At the level of krill it all starts to make sense for large animals to specialise for gathering the resource.

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