asakiyume: (black crow on a red ground)
asakiyume ([personal profile] asakiyume) wrote2014-09-24 08:22 am

Messenger birds and poisonous exhalations

On September 21–22 in Pen Pal, Kaya first started using her crow Sumi to carry messages. Although crows are messenger birds in many mythologies, they're not actually used as couriers in real life, not regularly anyway--pigeons are. People all over the world enjoy keeping homing pigeons (including in my town: I got a tour of a dovecote some years back--picture here); pigeons were used to deliver mail in India into the 2000s; and China still keeps military homing pigeons as a safeguard in the event that twenty-first-century communications are disabled for some reason (see Malcolm Moore, "China Trains Army of Messenger Pigeons," Telegraph, March 2, 2011.)

(Image source: Morgan Banaszek, "12 Facts about China You Probably Didn't Know,", Project Pengyou.)


On September 28 in Pen Pal, a bubble of carbon dioxide rises from a lake in Kaya's country, with disastrous consequences. In real life, this happened most dramatically in Cameroon's Lake Nyos in 1986. Lake Nyos is a crater lake, into which carbon dioxide slowly seeps from a pocket of magma. On August 21, the weight of water on top of the accumulating carbon dioxide was no longer enough to keep it down: it bubbled up and out, and because carbon dioxide is heavier than air, it settled on the surrounding land, suffocating approximately 1,700 people and 3,500 livestock. A similar, less devastating event had occurred two years earlier at another lake in Cameroon, Lake Monoun. The only other lake known to be at risk of this is in the Democratic Republic of the Congo, but all that's required for it to be possible is a lake above a volcanic fissure.

The eruption of carbon dioxide at Lake Nyos was accompanied by a rise in dissolved iron to the lake's surface, turning it rusty red:

[image no longer available]

Accumulations of carbon dioxide in mines are one of four sorts of killing "damps" (from the German dampf, meaning "vapor"--they're "choke damp" (also called "stythe damp"). The other sorts are "white damp" (carbon monoxide), "fire damp" (methane or other flammable gasses), and "stink damp" (hydrogen sulfide).


[identity profile] sartorias.livejournal.com 2014-09-24 12:25 pm (UTC)(link)
Fascinating stuff!

[identity profile] asakiyume.livejournal.com 2014-09-24 04:58 pm (UTC)(link)
Yes--the world's fascinating any which way you turn.

[identity profile] heliopausa.livejournal.com 2014-09-24 12:31 pm (UTC)(link)
That is absolutely horrifying... about the lake in Cameroon, I mean. Wow. Something to think through.

[identity profile] asakiyume.livejournal.com 2014-09-24 04:59 pm (UTC)(link)
It's *very* scary. Fortunately not many lakes share this characteristic.

I wonder if it would be possible to put a monitoring system in the lakes.

[identity profile] xjenavivex.livejournal.com 2014-09-24 01:27 pm (UTC)(link)
Thank you.

[identity profile] asakiyume.livejournal.com 2014-09-24 04:59 pm (UTC)(link)
Always my pleasure ^_^

[identity profile] desmond coutinho (from livejournal.com) 2014-09-24 02:03 pm (UTC)(link)
You are probably aware that B F Skinner was paid by the American Military to devise a guided missile system piloted by pigeons. It cost something like 25,000 dollars with an accuracy of 90% it was at least as good as cruise missiles which cost a million dollars per missile (25k was for the whole missile programme offered by Dr Skinner). Basically you get them to peck on a spot which resets the guidance system each time they peck the exact spot they get a grain of corn. Dr Skinner published an article claiming the only reason it was abandoned was because the American People would not accept that their guided missiles were effectively in the control of pigeons once launched. And a million dollars a missile is nothing to the budget of American Military spending. There was another system where you got dolphins to play a game of tage with warships but Dolphins are more expensive to train and if Americans get upset over pigeon pilots no way would they allow a dolphin to die for their country. And these days they have all sorts of complicated ways of protecting warships. A Dolphin might make it through but not if they were expecting attacks by trained dolphins. Right or wrong Americans would be far more upset at the militarization of dolphins and their deaths no matter how bold and ingenious than a few thousand dying of carbon dyoxide in the Congo you say. Unless it involved elephants. I've never heard of any NATO or American driven protection force anywhere that far into Africa. But then again I think abandoning the weaponizing of pigeons and dolphins was possibly a little premature. But I have no contacts at the pentagon so no need to stress over what I think.

[identity profile] asakiyume.livejournal.com 2014-09-24 05:01 pm (UTC)(link)
It's pretty sad that cute animals can elicit more concern than people :( It's not like it has to be either-or: you could be concerned about animals AND people.

[identity profile] duccio.livejournal.com 2014-09-24 08:24 pm (UTC)(link)
Well, the pigeons and dolphins are basically being trained to be suicide bombers and get a piece of corn or the expectation of a dead fish for their martyrdom. Not so different from human volunteers, really. Can anyone think of a more perfect business model (excluding questions of morality, of course, which would have no place in profit and loss calculation)?

I read about the events in Cameroon, where one day, whole villages were found to have been gassed by the vapors from the lake during their sleep. The vapors lingered in low spots in the terrain, and people might be walking along fine, unknowing that the CO2 was up to their wastes, until their children dropped unconscious, or they themselves entered a lower spot in the terrain where they would find themselves blacking out as they descended into areas where the CO2 was higher than their head level. They were walking along, and then suddenly passing out and dying where they fell, to be found later by friends, who would realize that they themselves were suddenly in deep trouble.

[identity profile] asakiyume.livejournal.com 2014-09-25 11:37 am (UTC)(link)
How long did the CO2 linger--do you recall? (I can look and find out, but)

In my mind, the event is linked with the poison-gas disaster in Bophal, but of course the latter was manmade.

[identity profile] duccio.livejournal.com 2014-09-25 03:02 pm (UTC)(link)
I don't remember but I think it must have lingered for a while, or maybe was recurring, with increased bubbling up of the gas from the lake. I read about people walking places on raised roads, and then would leave the road to cross a field, and suddenly would drop dead. They thought it would be safe, but they were wrong... so it must have continued on after the initial die-off, which had happened at night when people were asleep in their homes.

[identity profile] desmond coutinho (from livejournal.com) 2014-09-27 02:56 pm (UTC)(link)
I think a better example duccio would be using drugs mules who swallow condoms full of illicit drugs and then doing a switcheroo with some kind of explosive. I am not sure if you could explain to a dolphin that this was a one way mission. And I am pretty sure Mr Skinner never tried to explain to the animals more need to know I guess. Plenty of drugs get smuggled across borders enough to keep millions of addicts less discontent. Chuck Paluniak (Fight Club Writer) used to go into great detail of how to do stuff like this. The downside with bomb makers is that they either go off when you're making them or they're a bit of a damp squib. That's how Mr Nobel made his first fortune. And now the money goes to peace prizes.

On Dolphins in general there's a sort of splitting that occurs among the bipeds with opposable thumbs that has Dolphins as the sweet playmates of the sea who will help a sailor in distress as opposed to Sharks who are primaeval killers preying on the living like the undead. If they stop moving they die. But apparently they are just what they are. Dolphins will drown a baby dolphin if they want get some action with its mother. And Sharks are quite shy creatures whether they like humans or not they tend to leave them alone. They couldn't eat a whole one.

I don't think you understand how suicide bombing works unless there's some irish in you. They'd strap the bombs to some other guy take his family hostage and explain we all gonna die. You can die and save your family or you can refuse to drive this lorry into that checkpoint and then everyone you care about dies too. I'm with Chomsky on this one. Too complicated to explain to a dolphin just keep it as need to know.

But if you truly care about black people dying in Africa not gonna mock that. Angels may have a sense of humour but they've never taken to mine.

[identity profile] duccio.livejournal.com 2014-09-27 03:25 pm (UTC)(link)
No, I don't understand. Thanks for the comment.

[identity profile] heliopausa.livejournal.com 2014-09-25 10:01 am (UTC)(link)
Amen! re: being concerned for both animals and people.
ext_959848: FeatherFlow (Default)

[identity profile] blairmacg.livejournal.com 2014-09-24 03:30 pm (UTC)(link)
I remember thinking of the Cameroon case when reading Pen Pal and feeling that gut-punch of horror. The incident is its own sort of terrifying.

[identity profile] asakiyume.livejournal.com 2014-09-24 05:02 pm (UTC)(link)
Yeah, I remember when it first made the news, I couldn't believe such a thing was possible--very horrifying.

[identity profile] cmcmck.livejournal.com 2014-09-24 05:45 pm (UTC)(link)
Fire damp is the one my collier relatives would have been worried about. Dangerous stuff down the pit!

[identity profile] asakiyume.livejournal.com 2014-09-25 02:22 am (UTC)(link)
I imagine all the damps must have been pretty worrisome.

Yep, a very dangerous job.

[identity profile] nancylebov.livejournal.com 2014-09-24 06:23 pm (UTC)(link)
Pipes to release the gas slowly may be a solution (http://en.wikipedia.org/wiki/Limnic_eruption#A_possible_solution:_degassing_lakes).

[identity profile] asakiyume.livejournal.com 2014-09-25 02:24 am (UTC)(link)
Oh, that looks very good.
sovay: (Sovay: David Owen)

[personal profile] sovay 2014-09-24 06:47 pm (UTC)(link)
In real life, this happened most dramatically in Cameroon's Lake Nyos in 1986.

I remember reading about that in middle school. Being killed by something you can neither see nor escape was and is a particular horror of mine, so you can imagine how well that went over with younger, less defense-equipped me.

I never found a way to work them into my Váli story, but the "Mist Troubles" (Móðuharðindin) following the 1783 eruption of Laki are one of the scariest consequences of volcanic activity I've ever heard of.

[identity profile] asakiyume.livejournal.com 2014-09-25 02:26 am (UTC)(link)
WOW. I never knew that about the 1783 eruption. That is absolutely *terrifying*--an actual worldwide catastrophe, such as you get in catastrophe movies, only for real, and relatively recently. Yowza.

[identity profile] mnfaure.livejournal.com 2014-09-28 06:36 am (UTC)(link)
*nods* I had never heard of it either until I read that Ben Falk book about resilient living. I was telling Julien that it is not like it is ancient history and yet it doesn't make it onto our (education) radars a mere 250 years later.

[identity profile] asakiyume.livejournal.com 2014-09-28 07:49 pm (UTC)(link)
You know, and you'd think we'd hear *more* about this sort of thing, now that we're dealing with catastrophic climate change... again.

[identity profile] khiemtran.livejournal.com 2014-09-26 10:34 am (UTC)(link)
I'd heard of fire damp, but not of white damp. Of all of them, carbon monoxide is the scariest, because you don't get any warning.

[identity profile] asakiyume.livejournal.com 2014-09-27 02:05 pm (UTC)(link)
I don't think you get any warning with the carbon dioxide, either. On one of the wikipedia pages, they were saying that people can walk into pockets of it and just drop down dead, as if shot @_@

[identity profile] amaebi.livejournal.com 2014-09-26 02:21 pm (UTC)(link)
That is really interesting and I had no notion of any of it.Thanks.

[identity profile] asakiyume.livejournal.com 2014-09-27 02:04 pm (UTC)(link)
The world is just so . . . three dimensional. So much depth.

[identity profile] mnfaure.livejournal.com 2014-09-28 06:37 am (UTC)(link)
Fascinating and terribly frightening. Puts those scenes in Pen Pal into a whole new perspective.

[identity profile] asakiyume.livejournal.com 2014-09-28 07:48 pm (UTC)(link)
Yeah; I knew I wanted to include all the terrible powers of volcanic exhalations.