Doug's Darkworld

War, Science, and Philosophy in a Fractured World.

When Volcanoes Attack….

with 14 comments

pompeii.jpg

In my ongoing efforts to make the world a safer and more knowledgeable place, here is what my readers always wanted to know about volcanoes, but were afraid to ask. Yes, none of this academic stuff about splatter cones and composite craters, how do volcanoes kill people? Granted most of us won’t ever get near a volcano, but never hurts to be prepared. So roughly in order from most to least dangerous, ten ways to suffer death by volcano:

1. Lahars/Volcanic mudflows. What? Not steaming waves of molten lava? Not even close. Most volcanoes in the tropics are tall unstable hills in rainy areas. Volcanic soil is very fertile. A lot of poor people need places to farm in the tropics. Basically mudslides from volcanoes are the most common form of volcano caused death. Lots of ways this can happen, hot mud, cold mud, all pretty much the same in the end, people and villages buried in metres of mud. Yucky, but doesn’t look very exciting on the big screen. It’s not limited to the tropics either, Tacoma Washington is built on an old lahar…and warning systems are in place in case another one heads their way.

2. Nuée ardente/pyroclastic flow. This is the one that blows whole cities away, Pompeii and Herculaneum were destroyed this way. A huge cloud of hot (1,000 degrees Celsius!) gas and frothed rock blasts down the mountain, destroying almost everything in it’s path. Mount St. Helens did this. Sometimes sheltered people near the edge of the flow survive, but for most folks, they’re um, toast. Here’s a video of one…41 people died in this flow.

3. Tsunamis. Occasionally a really big volcano causes a tsunami. Krakatoa killed tens of thousands with a tsunami. The Minoan civilization on Crete was devastated by a tsunami. One can be drowned by a volcano, who knew?

4. Crushed by buildings that collapse under ash fall. Now we’re into the exotic ways to get killed by a volcano. I don’t know how many people die this way, presumably if people are close enough to the volcano that ash is piling up on the roof…they’re smart enough to flee. Still, this does kill a few people, especially if one includes folks killed by buildings toppled by a volcanic earthquake.

5. Suffocated by volcanic gases/ash. Again, I’m not sure how many die this way, but some definitely do. People with any sort of breathing problem can be in big trouble when ash starts to fall, time to put on a mask and run away.

6. Struck by ejecta. OK, one has to be standing pretty close to the volcano to get hit by stuff tossed out of it, this is usually a fate reserved for scientists who study volcanoes. Oddly enough they can be dodged if one is paying attention, some scientists were on Surtsey Island when it started erupting, they spent a nervous fifteen minutes on the beach dodging flying boulders before a boat could pick them up. Um, yikes.

7. Killed by lava. Most lava moves pretty slowly, a hundred metres an hour is not unusual. (Even my calico could outrun that.) The kinds of swiftly flowing molten rock one sees on National Geographic specials and the movie Congo are only generated by a few volcanoes, and it is usually very close to the crater, and even if not, it is confined to stream channels or such. Plus, molten rock radiates so much heat that a person is likely to burst into flame before it actually gets to them. That’s comforting to know, eh? (Yes, Sam and Frodo would have been hobbit sized piles of ashes when the eagles got there.)

8. Blown to smithereens. Another favourite way for scientists to die in a volcano, just be working way too close to the crater when an eruption occurs. These are the lucky scientists in this situation.

9. Burned to death. This is what happens to the unlucky scientists who aren’t close enough to be blown to smithereens during an unexpected eruption at a crater they were studying.

10. Starve in a volcano caused famine. OK, it’s not directly a volcano caused death, but when a volcano causes a famine and people die…they’re still dead. Volcanoes in 1600 BC, 535 AD, and 1816 (The year without a summer) caused global crop failures.

I’m sure there’s a few more exotic ways to die by volcano. And yes, it’s possible to combine any of the above, as one unfortunate cruise ship passenger apparently did, or the careless scientists in the “crater of death.” People can be really clever when it comes to getting killed sometimes. Otherwise the Darwin Awards would have no winners, then where would we be? Just for fun here is a list of the the deadliest eruptions…clearly people living in Indonesia need to carry volcano insurance.

(The above image is claimed as Fair Use under US copyright law, it is not being used for profit and is central to illustrating the post. It’s a little unclear who holds the copyright, but until informed otherwise I’m going with…Credit: Michelle Sciarrone. These are people who died in Pompeii, in the “Garden of fugitives.” They were buried in ash, their bodies rotted away leaving molds which were filled with plaster…revealing them just as they were when they fell. Yes, their bones and teeth are in there still too.)

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Written by unitedcats

February 7, 2008 at 9:45 am

Posted in Science, World

14 Responses

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  1. Hi Doug,

    I appreciate that you have compiled some references to volcanoes that have caused famine.

    Just one small correction. You noted that a volcano in 1816 caused the year without a summer. The year without a summer was in 1816 but the volcanic eruption that produced the sunlight shielding ash and sulfur dioxide actually occurred the prior year in 1815. (Your link has this date too.)

    We should be on heightened alert for earthquakes and volcanoes following the Indonesian 9.1 earthquake in 2004. In the 1900’s the four strongest earthquakes (all 9’s) occurred within a twelve year time frame. The Indonesian quake may have also shaken up the earth so much that we will be getting some more big earthquakes in the near term. (I hope the scientist is wrong – but if history repeats itself – we might face more trouble soon.)

    Anyways, I think we should learn as much about Caldera volcanoes as we can. They will erupt again … sometime._

    Thomas Donlon

    June 4, 2008 at 5:48 pm

    • you are right it don.st mark any sens

      tiffany

      April 14, 2010 at 10:22 am

    • i dont belive it it is alful

      tiffany

      April 14, 2010 at 10:24 am

  2. this does not make any tye of sense if you look at the scientifical procedure that normally occurs , if you are ther for a real volcanoe and witness everything possible there is to witness in a active volcanoe. in other words this is just a personal view that you think that the dates coincidently matched the date where the actual volcanoe occured.

    sarah

    November 18, 2008 at 8:56 am

  3. this picture represents so much and it looks like Pompe

    Melinda

    November 24, 2008 at 12:54 pm

  4. wer to see mey sleep in fountain of fire and ash.
    she lay silent after burning and gash.
    who he’d be i never did know.
    but the fire of ash covered her like smow.

    poopyskinlit

    April 1, 2009 at 10:15 am

  5. This is a really coool site!!!!! Keep up the goood work please and thank you.

    Eliabeth

    May 19, 2009 at 6:31 am

  6. I wish there was no such things as volcanoes. coz would never want to die

    ExtraGirl1000

    September 15, 2009 at 1:16 pm

  7. cool pic. but very sick

    sophie leendres

    September 30, 2009 at 10:07 am

  8. People are dead!

    bubba

    December 5, 2009 at 2:31 pm

  9. I hate volcans because thay kill you i dont like them i wish i could kill them my self

    tiffany

    April 14, 2010 at 10:26 am

  10. people die form volcans becaus they are stuid and dum but cool commet and pic

    tiffany

    April 14, 2010 at 10:29 am

  11. i think volcano`s aere cool to watch on a video but i wouldnt ever want to see one in real life because it might hurt people and that would m,ake me sad

    Cierra Insco

    May 6, 2010 at 12:10 pm

  12. hey can you like put more info on plz got massive test coming up and need loads of info thanks

    sexy thing

    January 10, 2012 at 12:26 pm


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