By S. J. Freeth (auth.), Samuel J. Freeth, Charles O. Ofoegbu, K. Mosto Onuoha (eds.)
Attention to the issues posed through usual risks in West and significant Africa was once introduced into sharp concentration through the deaths of an envisioned 1700 humans within the valleys to the north of Lake Nyos in 1986. sooner than that the one, good documented, significant typical disaster was once the 1983 earthquake which killed at the least 275 humans in northwestern Guinea. even though we might no longer desire to seem to recommend that the 1939 Accra earthquake, which killed sixteen humans, or the Lake Monoun catastrophe, which killed 37 humans in 1984, weren't major occasions for the components involved. the whole horror of the Lake Nyos gasoline catastrophe used to be exacerbated, so far as the surface international used to be involved, by way of preliminary uncertainty referring to its reason. in the course of the first part of the research there have been substantial disagreements among a number of the partaking teams of scientists. lots of those disagreements have now been resolved and it truly is to be was hoping that the contributions during this quantity will extra support to solve a few of the notable uncertainties. despite the fact that, even though it is critical to appreciate what occurred at Lake Nyos in 1986, and why it occurred, it truly is extra vital for the way forward for that quarter that additional related mess ups will be kept away from. we will in simple terms wish that this quantity can help to set up an exceptional origin for destiny study into methods of removal extra fuel from the lake.
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104,433-446. J. K. Keywords: volcanic gases, gas toxicity, gas density, active volcanoes, Mt. Cameroon, hazardous lakes, Lake Nyos. ABSTRACT The most abundant volcanic gases are some of the least toxic and, conversely, the most toxic are some of the least abundant. As volcanic gases rise from depth, the more chemically active components react with the rocks through which they pass. Those gases which are released when volcanoes erupt have generally risen rapidly and therefore retain a high proportion of the most chemically active, and consequently more toxic gases, but they are also hot and therefore lighter than ambient air, so they continue to rise and are rapidly diluted to sub-toxic levels.
K. Keywords: volcanic gases, gas toxicity, gas density, active volcanoes, Mt. Cameroon, hazardous lakes, Lake Nyos. ABSTRACT The most abundant volcanic gases are some of the least toxic and, conversely, the most toxic are some of the least abundant. As volcanic gases rise from depth, the more chemically active components react with the rocks through which they pass. Those gases which are released when volcanoes erupt have generally risen rapidly and therefore retain a high proportion of the most chemically active, and consequently more toxic gases, but they are also hot and therefore lighter than ambient air, so they continue to rise and are rapidly diluted to sub-toxic levels.
Most of them would therefore merit further investigation before it can be declared beyond reasonable doubt, that they do not contain potentially hazardous quantitie~ of gas. 1. 1990. Lake Bambuluwe: could it be the source for a third gas disaster in Cameroon? J. Volcanol. Geotherm. Res. 42, 393-395. J. F. 1987. The Lake Nyos gas disaster. Nature 325,104-105. M. and Tietze, K. 1990. Conclusions from Lake Nyos disaster. Nature 348, 201. C. 1. 1972. Potassium-argon ages and strontium isotope ratio measurements from volcanic rocks in northeastern Nigeria.