Talk:Lake Nyos

message: :"... a cloud of carbon dioxide gas suddenly boiled at Lake Nyos, ..."
;boiled is the wrong word, but I can't lay my hands on the right one for 'came out of solution' ...
;—wwoods
:The only word I can think of is parcipitated. --Silver86 23:04, 28 Dec 2004 (UTC)
replies: text:  Try vented Revmachine21 03:16, 18 June 2006 (UTC)
replies: text:  Or disgorged. --Psm 05:59, 19 October 2007 (UTC)
thread_title: Untitled

message: Has any consideration ever been made towards using the pressure generated in the degassing process to generate electricity?  
Could this electrical generation be used to offset the long term costs of adding more degassing pipes to these lakes?  
I have been unable to find discussion on this topic.  If you are aware of any papers or research towards this subject please post it.
:I can't answer your question, but you might also try asking at the Science Reference Desk. Hopefully, between here and there someone can at least hazard a guess. —Amcaja 02:36, 3 November 2005 (UTC)
thread_title:  degassing the lakes 

message: There must be rather interesting plants an possibly fish in there. Bacteria at least. Is anything known about that? 84.160.210.182 17:54, 4 December 2005 (UTC)
replies: text: I, too, am struck by the lack of any discussion of the biota of this lake.  While I acknowledge that the unusual dissolved-gas regime may preclude most forms of life, I have to think that there are some life forms that would thrive here, akin to the deep-sea vent communities.  And if there aren't, the article should at least say so.--Piledhigheranddeeper (talk) 21:55, 21 August 2012 (UTC)
thread_title:  biology 

message: Engineers could also introduce a channel to allow excess water to drain; if the water level were lowered by about 20 metres, the pressure on the wall would be reduced significantly.
Would this not also have the effect of lowering the limnic eruption threshhold? -Antonius- 05:16, 11 December 2006 (UTC)
thread_title:  Weakening Dam 

message: I think that most of the information about this disaster and the way in which people were killed  has been repeated over and over from a single flawed source and contains some misinformation.
First, Carbon Dioxide can cause asphyxiation by displacement of oxygenated air.  However, it is more complicated than that.  CO2 is also a toxin.  That is, it is not simply displacement of oxygen that can kill or harm people.  Concentrations of over 10 percent are lethal if breathed for long enough periods (Could not source for this level but I learned it in my First Aid/First Responder training). 
Here is one source:  What are the main health hazards associated with breathing in carbon dioxide gas?
High CO2 levels have effects on the nervous system, and consequent harmfull physical effects.  CO2 levels naturally effect breathing rates which helps regulate and keep our body's blood oxygen level within tolerable limits.  If CO2 builds up in our lungs, a result of increased muscular activity or decreased inhalations, our brain signals our diaphragm muscles to breath more and more deeply. In air with a high level of CO2, this regulatory system becomes dysfunctional.  This can lead to rapid loss of consciousness.  This is a much more rapid transition than would occur from simply holding ones breath.  I'm not sure how this would differ from breathing in, let's say pure nitrogen, but I suspect pure nitrogen would not cause immediate unconsciousness.
The main point then, is that the concentration of CO2 would not have to be so high that oxygen concentration was too low for life.  It only would have to be high enough to cause unconsciousness and then remain at a significant level for a period of time to cause death.
: Here is more info on danger of CO2 (from http://www.epa.gov/ozone/snap/fire/co2/appendixb.pdf):  --Psm 06:10, 19 October 2007 (UTC)
thread_title:  Carbon Dioxide Toxicity, and Possible Other Gasses Involved 

message: Can be found here . Remember 16:10, 22 May 2007 (UTC)
thread_title: Good article on disaster

message: Again this has crept into the article: "The solution proposed by scientists was that five pipes should be extended into the lower regions of the lake, allowing a controlled and continuous outgassing."  The current pipe was installed in 2001, following an experiment in 1995.  Various researchers argue that more pipes are needed, and I've found several references to that effect.  But I can't find references that imply that there was some objective level of number of pipes decided early on in some manner, and that only one has been installed.  Please don't reinsert language to that effect without a reference.  —Preceding unsigned comment added by Psm (talk • contribs) 21:24, 8 November 2007 (UTC)
replies: text: Lol, never mind, with some more searching I found the reference.  The original, mostly French, team that set up the 1995 experiment had proposed five columns.  --Psm 21:31, 8 November 2007 (UTC)
thread_title:  what's the source for the "five pipes"?? 

message: "It is believed that up to a cubic kilometre of gas was released. The normally blue waters of the lake turned a deep red after the outgassing, due to iron-rich water from the deep rising to the surface and being oxidised by the air. The level of the lake dropped by about a metre, representing the volume of gas released."
One of the fundamental properties of gasses is that they have no definite volume.  They expand or contract to fill the space available to them.  "A cubic kilometre" of gas is a meaningless statement, as is the idea that a meter drop in water level can translate directly to the volume of how much gas was released.  If you exhaled all the air in your lungs into a vacuum such as outer space, gradually that gas would expand to fill the space of a cubic kilometer.  Similarly, a cubic kilometer of the Earth's atmosphere at sea level could (theoretically, at least) be compressed to fit in the volume of your lungs.76.255.94.158 (talk) 08:53, 9 February 2009 (UTC)
replies: text: I think it's reasonable to read this as referring to the volume at the local temperature and pressure. Would be nice to have a cite, though.  It smells a bit WP:OR to me. TJRC (talk) 21:26, 9 February 2009 (UTC)

text: I removed the interpretation of what it represents.  Certainly it doesn't represent the volume as dissolved gas. Also the surface area X 1 meter drop is not close to a km3. And indeed the total water volume of the lake is 0.15 km3  Lateg (talk) 17:18, 20 June 2010 (UTC)

text: As I understand, the gas was neither in the lake, nor dissolved. Volcanoes release gases... --Chris.urs-o (talk) 18:03, 20 June 2010 (UTC)
thread_title:  Bad science: volume of a gas 

message: The caption below one photo says "Areas once covered with vegetation are especially visible around the shore of the lake." I fail to see how this comment is related to the 1986 disaster. Since plants should be happy about high levels of CO2, I fail to see how they should have been affected. Perhaps someone can clarify. 141.33.60.125 (talk) 10:19, 24 August 2011 (UTC)
replies: text: My interpretation is that the vegetation was eroded by "a wave of at least 80 feet (24 m) that would scour the shore of one side."  That's what it looks like on the right side of the photo.   I'll remove that part of the caption as unreferenced or interpretaton, but it could be accurate. -  Lateg (talk) 22:45, 24 August 2011 (UTC)
thread_title:  Affected vegetation? 

message: Re: revision as of 13:35, 5 October 2011, 205.221.255.90 .
Translation http://ru.wikipedia.org/wiki/%D0%9D%D0%B8%D0%BE%D1%81  :
On  the bottom of lakes Nyos  and  Monun  not discovered signs of avalanches, landslides or underwater volcanic eruptions, which could be a cause a limnological catastrophes  August 21, 1986 and August 15, 1984. Today isn't  any reliable data about the earthquake, about the wind that could  to create the  wave surges, and about the cold rain only on one side of the lake Nyos (and Monun) that could be a cause a limnological catastrophes August 21, 1986 (and August 15, 1984). 
In this regard, there is no reason to consider these  versions as responsible for the limnological catastrophe August 21, 1986 at lake Nyos (and August 15, 1984 at lake Monun).
Limnological catastrophe in 1986 at lake Nyos and  1984 at lake Monun are caused by the atmospheric precipitation in 1983.  In 1983  the atmospheric precipitation  did      switching  on   the trigger mechanism of catastrophes in 1986 at lake Nyos and  1984 at lake Monun.
(See also. http://nyos.lv/en/nyos/osobennostj-atmosfernyh-osadkov----v-okrestnostjah-ozjor-nyos-i-monoun-32225).  — Preceding unsigned comment added by 188.112.170.48 (talk) 08:40, 6 October 2011 (UTC)
thread_title:  Trigger mechanism catastrophes? 

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I have just added archive links to  on Lake Nyos. Please take a moment to review my edit. If necessary, add  after the link to keep me from modifying it. Alternatively, you can add  to keep me off the page altogether. I made the following changes:
*Added archive https://web.archive.org/20120103144659/http://www.universcience.fr:80/fr/science-actualites/film-as/wl/1248122455252/le-degazage-du-lac-nyos to http://www.universcience.fr/fr/science-actualites/film-as/wl/1248122455252/le-degazage-du-lac-nyos/
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replies: text: I just checked the archived link and got the same problem that happened when I tried to archive it myself recently: the page is a list of blue links with no formatting, four or five Ajax pop-up 404 errors, and no sign of the movie that's supposed to be there. Because I'm viewing it using my iPad and not my desktop computer, I'll leave the link alone for now. But if someone else sees no movie, then probably that link should just be deleted. — Gorthian (talk) 04:12, 8 February 2016 (UTC)
thread_title:  External links modified 

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I have just modified 2 external links on Lake Nyos. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
*Added archive https://web.archive.org/web/20071230034137/http://encarta.msn.com/encnet/features/mapcenter/map.aspx?TextLatitude=-0.336785200454403&TextLongitude=29.5037588339211&TextAltitude=6&TextSelectedEntity=1075&MapStyle=Comprehensive&MapSize=Large&MapStyleSelectedIndex=0&searchTextMap=Wum&MapStylesList=Comprehensive&ZoomOnMapClickCheck=on to http://encarta.msn.com/encnet/features/mapcenter/map.aspx?TextLatitude=-0.336785200454403&TextLongitude=29.5037588339211&TextAltitude=6&TextSelectedEntity=1075&MapStyle=Comprehensive&MapSize=Large&MapStyleSelectedIndex=0&searchTextMap=Wum&MapStylesList=Comprehensive&ZoomOnMapClickCheck=on
*Added archive https://web.archive.org/web/20120331102431/http://ochanet.unocha.org/p/Documents/Lake_Nyos_Dam_Assessment.pdf to http://ochanet.unocha.org/p/Documents/Lake_Nyos_Dam_Assessment.pdf
*Added  tag to http://za.today.reuters.com/news/newsArticle.aspx?type=topNews&storyID=2005-08-23T160411Z_01_BAN357745_RTRIDST_0_OZATP-CAMEROON-DAM-20050823.XML
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thread_title:  External links modified 

message: A section on the traditions, folklore and geomythology of the lake would be informative.  A source on the subject:
*
—2606:A000:4C0C:E200:7150:E613:78D3:42AE (talk) 02:39, 28 December 2017 (UTC)
thread_title:  Geomythology