Volcanic eruption emergency response

One of the ways to see the potential power of
advanced atomically precise gemstone metamaterial technology
is looking at the very worst nature can/did/and-does throw at us humans
and looking on how this technology can help us changing things
– from grueling pain and death for entire cities
– to merely major inconveniences.

Flight or fight

This coverage here will start from the non-invasive approaches of
– leave nature to it's own devices (flee and let the landscale reshape itself) and
– work-with-nature (mildly redirect volcanic flows).

That is: Pushing back against natures natural flow of events only to the minimum necessary.
As "winning" against nature can actually mean losing in the longer run.
The whole thing with planetary scale engineering being potentially a one time irreversible experiment.

Then the coverage will gradually go into more invasive/aggressive approaches.

Prepping in known to be high risk areas

For context so the following makes sense:
In an advanced gem-gum-tech era even the poorest (so far that concept continues to make sense)
will no longer live in ad-hoc take-whatever-materials-you-can-get cobbled together shacks.
See: Housing in the gem-gum era

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Beside running away from the eruption with improved versions of conventional modes of transport (cas/ship/plane),
Advanced underground transport going far beyond local centers in range
will be available as a high bandwidth escape route for people (and their sufficiently valued animals).

In some cases one will not even need to leave the house to access such transport.

For bringing goods to safety too there is the option of infinitesimally beared tube mail.
Particularly high value goods (documents / mementos / jewelry / wine / whatever tickles the owners fancy)
can be located right beside a personal goods-transport port
such that they can be brought to safe place with enormous speed at a moments notice.

Now the house can "run away"

Housing will no longer being land locked.
Spawned cheap gem-gum-tech based housing on land will no longer be immovably land locked.
Housing could be designed to be easily and quickly unspawned just as it was spawned.
Fed back into the global microcomponent redistribution system.
There could be a dedicated microcomponent cache in the basement. Even faster by going down to just fist sized chunks
and using the infinitesimally beared tube mail for that too.

Due to the larger scale house building and reverse unbuilding
will probably be more involved than nanofactory chip use every day use items.
That is it would involve much more on demand deployed macro-robotics
including things like weird organocranes.

All the non-disassemblable non gem-gum stuff would needs to be packed up separately
if tings are to be disassembeld to even smaller size
which would not be strictly necessary for a flight scenario.

Fight: No time for evacuation

last minute/second response

This to a good part goes into deploying very large and massive physical barriers very fast.
Properly preparing will always help.

The closer one is to the surprisingly erupting volcano the faster one needs to be able to react.
At some point immediate flight is no longer an option and one needs to switch to fight.
This fast of flight at least not being an option with all of ones belongings including housing.

When it comes to barriers against very hot materials like pyroclastic flows and (here very fast moving) lava
then many gemstone based metamaterials have one huge advantage.
Unlike wood they are non-combustible and unlike iron have very high melting point way above these types of eruptive materials.
Just for two examples:

• leukosapphire (aka corundum Al₂O₃)
• moissanite (aka silicon carbide SiC)

Cooling can help too making lava a barrier for itself.
That goes into fast transport of large quantities of water
and other advanced cooling and thermal transport methods.
Particularly inherently safe entropic energy storage and transport.
All enabled by advanced gem-gum-tec.

Also one will be able to avoid liberating HCl when spaying seawater on lava
be either live desalination or more indirect ways of cooling.

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Cost:
Overall the cost of erecting barriers will come down by many orders of magnitude.
Going from crippling cost to barely keep up with defending to
needing to be careful to not cause issue with mass load shifts.
and to not change the landscape too much in a somehow detrimental direction.
Like e.g. angering your neighbors for just one potential issue.

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For a particularly wild scenario:
A barrier could even fully dome over housing(s) to protect them.
In this case active cooling on massive scale is mandatory as
radiative heat would destroy what is meant to be protected.
Also the end result might be the housings situated in one or many caves
which might not be the desired outcome.

No time for evacuation last millisecond response

Anyone getting into that situation expectingly has probably done something wrong.
Anyway let's run with it.
One is basically on-the-spot attempting to defending a fragile squishy human body
against an enormous detonation blast wave here which is pretty dire.

Assuming one was present up in the air well prepared with a many meters thick shield of
a utility fog variant fully surrounding oneself that was specifically designed for this task.
That shield will attempt to dampen the shock wave impact as best as possible.
Still leading to quite an excursion of g forces.
But now there is a nonzero chance for survival.

Fight preemptively: Preemptive geoengineering

That would involve:

• preemptive erection of barriers (or better: barrier erection systems) to guide volcanic flows
  
• controlled pressure release from volcanic systems to induce controlled eruptions
  

Especially the latter is quite invasive and starts an interplay with
messing with plate tectonics in the sense of
preventing few strong earthquakes by converting them to many weak induced ones.
This quickly spirals into all out planetary scale engineering.
See page: Lithospheric mesh

Why live right next to a volcano?

Why do especially many people tend to live in the neighborhood of active dangerous explosive volcanoes in the first place?

Fertile soil. Mostly that simple.
Advanced atomically precise gemstone metamaterial technology may help with that too on the long run.
I.e. making any land fertile for good food.
In the "short run" people want to remain living at their loved birtplace of curse.
Plus beautiful landscapes and most importantly holding up the freedom of choice for where to live.

As for supervolcanos:
No matter where one lives most of the same hemisphere of Earth is basically right next to it.
Available response times are vary though.

Supevolcanoes

Especially famous ones (random pick):

• https://en.wikipedia.org/wiki/Yellowstone_Caldera
• https://en.wikipedia.org/wiki/Phlegraean_Fields

Related

• Infinitesimally beared tube mail
• Geoengineering
• Planetary scale engineering
• Story scenarios