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Questions tagged [volcanoes]

For questions involving volcanoes, volcanic eruptions, and related phenomena, whether or Earth or elsewhere.

6
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3answers
243 views

Effects and feasability of a modern-day Olympus and Hephestus

The time... a few years from now. On the laser-launch pad of one of the spacefaring nations of Earth, a spacecraft stands, the time until its launch counting down steadily. The launch vehicle weighs ...
3
votes
4answers
167 views

Defence against volcano?

Say I have a group of people who live next to a volcano for religious reasons. They will not move. This volcano erupts very regularly - almost once a week. What kind of defence or adaptability ...
6
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2answers
107 views

How to modify the human respiratory system to be able to breath in volcanic ash

Okay so in the novel I am writing there’s a Third World War fought by the nations of earth against a human space empire (I am overly simplifying this ) . Now the thing is the empire uses transhuman ...
-2
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1answer
56 views

New virus living in geothermal steam vents [closed]

Would a scenario be possible where an existing virus hybridizes with a still-undiscovered virus that previously lived only in geothermal features, such as deep ocean vents, geysers, mud pots, or ...
1
vote
1answer
82 views

Volcano near river mouth

When a volcano is under the sea, but close to the coastline, it creates islands. I have a volcanic island near (less than 20km away) a river mouth. Is this feasible? I couldn't find any real example. ...
9
votes
4answers
871 views

How long does it take for islands to form after an underwater volcanic eruption?

So, vaguely, I remember from earth science that when submarine volcanoes erupt they eventually form archipelagos. My question actually has several parts; Starting with the first eruption to break ...
4
votes
3answers
320 views

Determination of reasonable volcanic island height from area?

My islands (in the world I'm building) were formed from a volcanic hotspot. I want to build realistic islands, so I was wondering how tall volcanic islands are generally in relation to their area. ...
4
votes
4answers
136 views

Could a large string of mountains stop volcanic ash from traveling any farther?

I am adding a new area to my game (a free-roam RPG): the ashlands. I put a small volcano (only about 15ft wide and long, and about 20ft tall. Really, more of a lava vent) on the western edge and have ...
5
votes
1answer
144 views

Would it be feasible for a single planet to have both magma based volcanoes and cryovolcanos?

I took astronomy class last semester, and I became aware that there were not only magma based volcanoes, but ones run on colder moons in our solar system, called cryovolcanos that in essence spew ...
8
votes
2answers
217 views

Is there anything wrong with my plate tectonics map?

Here is a map I just produced of the plate tectonics of a world I'm working on. Does anyone familiar with the subject see anything wrong with it? If you can differentiate between the penciled and the ...
4
votes
2answers
207 views

Can Off-shore Calderas Exist?

A caldera is usually the remnant of a volcanic eruption powerful enough to collapse the structure surrounding the magma chamber. Many of our examples, like Yellowstone, Crater Lake, Toba and even ...
4
votes
3answers
274 views

How can the human race disappear in a few days? [duplicate]

Is it possible to eradicate the human race in one week? And if yes, by which way? Of course, the human race should do everything to survive. What could be more powerful than our will to survive? 1. ...
7
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2answers
224 views

Three of the Four Kinds of Volcanic Eruptions…Underwater

A volcanic eruption is measured in two constants--gas and viscosity. For clearance, low viscosity is like squirting water off a nozzle, whereas high viscosity is like squirting caramel off a nozzle, ...
5
votes
2answers
221 views

What type of city-structure can survive a shield volcano?

So I have a continent by the name of Sho. It is highly inspired by Asia, but will have a few mixes in the fray to give it my own touch. There is a specific people that live near a shield volcano. I'...
1
vote
2answers
201 views

Can a new volcano have metals inside?

If I were to use handwavium to raise a volcano in the middle of the sea, would it contain metals or ores large enough to be extracted by normal means, like mining with a pickaxe? Everything apart ...
1
vote
1answer
110 views

Given an initially high concentration of CO2 and H2O, how efficient can I conceivably make a photosynthetic reaction?

I have been told that the high proportion of O2 and CH4 in my atmosphere are unsustainable unless constantly refreshed by an active process. I would like to sustain the following atmospheric ...
4
votes
2answers
117 views

What is a plausible way to fuel highly active volcanism and seismic activity on my planet?

I thought that a large, close moon might help generate enough heat and stress to raise the average temperature on my world and stave off a Snowball Earth scenario. According to this article and this ...
8
votes
1answer
111 views

Where to find equations to calculate tidal heating in a binary planet/planetesimal system?

I'm building a very small homeworld (0.602 M$_e$) with a very large moon (0.0711 M$_e$) that orbit each other at a barycenter about 7.12 planetary radii (1 R = 0.870 R$_e$) from the primary's center; ...
2
votes
6answers
129 views

How do I use explosives to erupt a small volcano and cause a pyroclastic flow and large plume? [duplicate]

I am evil and wish to destroy a town near a volcano and kill all of its citizens. The volcano is small - about 15 square kilometers in area. The town is even smaller. The thing is that I don't live ...
23
votes
14answers
7k views

What wearable material do I need to survive a pyroclastic flow?

This question is inspired by Green's Volcanoes in Orbit! The premise is that there is a 50-mile-high shield volcano (again, let's ignore the height implausibility) with a slope of about 2-3 degrees, ...
10
votes
3answers
652 views

Volcanoes in Orbit!

Building on this question about space exploration on the slopes of a 50 mile high volcano, I'm curious what would happen when the volcano erupts. The volcano is: 50 miles high, just on the edge of ...
35
votes
12answers
7k views

How can a human cause the Yellowstone to erupt?

The story is in contemporary earth and with same technology. How can a single human make the Yellowstone explode with the tools available to us now (or with slightly advanced ones, but nothing too sci ...
2
votes
7answers
588 views

Lava behind a forcefield; How to solidify the lava in contact? [closed]

I have a volcano spewing a lavaflow over the countryside. I have a small valley area protected by an advanced forcefield. It is an extended version of a space going ship's forcefields. When lava ...
14
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6answers
7k views

Can lava still be red hot liquid underwater?

I want a lake which contains a crater of active volcano at the bottom, which the volcano has a lava lake and the lava is still red hot in liquid state, just like lava lake above water on Earth. Is ...
-2
votes
1answer
188 views

Could a super volcano cause ragnarok like events?

For the world I am creating I am trying to have an event like a super volcano explosion in its past. Generations of oral storytelling have resulted in the Norse mythology of Ragnarok making its way to ...
8
votes
1answer
118 views

The Geography and Ecology of a Supervolcanic Planet

What would be the geographical and ecological implications for an Earth-like planet that experienced intense volcanic and supervolcanic activity on a scale that, while decreasing over time, was far ...
4
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2answers
165 views

Would it be possible to have fresh water in a world where there was a major volcanic eruption which destroyed all civilisation apart from one city?

For an area in a world I am creating, 300 years prior to the present day, the northlands were destroyed by major volcanic eruptions. Would it be possible for there to be water accessible to a party ...
1
vote
2answers
139 views

Molten Whirlpool planet

Premise; A magma/lava planet tidally locked around its sun. The side facing the sun is always erupting lava, the dark side is a cooled shell, which sinks into the magma beneath in a global whirlpool. ...
7
votes
1answer
124 views

A layer of igneous rock over a large area

How big of a volcano would be needed for a large (Alaska-sized) area on an Earth-Like planet to be covered in a thick shell of igneous rock? Would that volcano also destroy the world or make it ...
15
votes
5answers
893 views

Considerations for a Dwarven Volcano City

Related: Could a Dwarven Civilization Exist? Background: A Dungeons and Dragons world (for all intents and purposes, Tolkein lore is close enough) in which a group of colonists far from home are ...
-3
votes
2answers
139 views

Volcanic winter related to moons?

My Kepler Bb planet has 4 moons and is habitable. So that is good. But all 4 of these moons are major moons which while indeed possible, could be a problem. You see, these moons are in resonance so ...
5
votes
6answers
317 views

How could an island surrounded by scalding steams be accessible in medieval age?

Set in the medieval period, preferably around 15th century, there is a habitable island the size of New York surrounded by boiling water inside the mouth of a volcano. How could you explain that there ...
2
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3answers
118 views

Supervolcano Defense - 2100

In the year 2100 the population of the United States is close to near one billion people (thanks to refugees from the Great Islam War in Europe). Advanced seismic technologies have detected that the ...
1
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3answers
1k views

Benefits to Yellowstone Eruption today?

If the Yellowstone Supervolcano did happen to erupt within the next ten years or so, what benefits would there be to humanity? I understand that there would probably be many extinctions to other ...
19
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4answers
9k views

What would happen to Earth if Yellowstone Erupted

In a world I am building; Humanity has left the earth and now only the plants, animals and cities remain. Many animals continue life undisturbed, while other went extinct. But with the disappearance ...
3
votes
1answer
338 views

Russia's Alternate Geological History

Since the geological history of the world's largest nation is as big as the nation itself, and since I don't have a master familiarity with Russia's formation over hundreds of millions of years, I'm ...
4
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2answers
152 views

Californian Yellowstone

North America's largest and perhaps most popular volcano is the plume of mantle situated right beneath the surface of what we arbitrarily call Yellowstone National Park. This image shows the two most ...
10
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3answers
431 views

Geopolitical and Economic Implications of a Large Eruption at Yellowstone

Yellowstone National Park is the site of a large supervolcano that is somewhat due for an eruption in the geological near term. I have seen slides and discussions to the effect that large portions of ...
3
votes
2answers
324 views

The Subductive Hotspot

On Earth, there are only two different ways to create major volcanoes. One way is subduction. It occurs when older/heavier rock sinks beneath younger/lighter rock. As the rock descends, it ...
3
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6answers
2k views

Could I intentionally trigger a Yellowstone eruption?

I'm very interested in a post-eruption setting in the continental United States. Unfortunately, it looks quite unlikely that a serious caldera-forming eruption is in our near future. However, we're a ...
6
votes
2answers
1k views

Would it be possible to create an artificial volcanic island?

A volcanic island can obviously come into existence quite easily and swiftly by natural causes, as evidenced for instance by the appearance of Surtsey off the coast of Iceland. However, people have ...
13
votes
3answers
1k views

Blue Cryovolcanic Planet

Everybody, even those who are complete beginners in the field of Astronomy, know Io, the cryovolcanic moon of Jupiter that looks like a burned pizza with skin cancer. Volcanoes constantly spit out ...
4
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2answers
224 views

Could the Siberian Eruption Get Any Bigger?

Background Information: 252 million years ago, Siberia erupted, releasing enough lava to fill in a volume anywhere between one and four million cubic kilometers. Any time someone thinks "large ...
6
votes
3answers
508 views

Which type of creatures could exist in a volcano world?

Yes, no one, only bacteria and with luck. Let's suppose that: It is a fantasy world; The creatures live in a dormant volcanoes zone; The neighbors volcanoes are about 5 km and they are still ...
1
vote
1answer
155 views

History Rewritten…By Katla Volcano [closed]

In 2010, the Icelandic volcano of Eyjafjallajökull (a pronunciation guide to this will be much appreciated) had released a cloud of ash that enveloped all of Europe, a good deal of Asia and the ...
6
votes
1answer
271 views

If a Volcano Killed Rome Instead of the Barbarians

In the fourth and fifth centuries AD, the Roman Empire had fallen under bad times. Within its boundaries, the once powerful nation had been getting compromised by political corruption and civil ...
16
votes
4answers
2k views

Castle surrounded by lava

After watching first Shrek, I got interested in one detail: Can you build a castle which is surrounded by lava, using medieval technology? For scope of this question: Imagine ultimate wealthy king/...
6
votes
5answers
492 views

Volcanic Debris Clouds In Planet's Low Orbit?

I have a few questions related to a crazy setting I'm working for my novel. Let's say we have a planet with a thin atmosphere and low gravity. It's volcanic activity is so intense that the planet has ...
5
votes
1answer
204 views

Bay evaporated by a volcano

In the world I am designing, I want to have a bay with a tight bottleneck, filled with salt water from the ocean. You can think of the bay as river shaped. To avoid creating a "C" shaped island I want ...
31
votes
6answers
4k views

How would we try to defuse Yellowstone?

There exists a fictional future world where we have determined space travel is impractical for the majority of the species, despite the fact that technology is more advanced than today. There are no ...