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Mazuku

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Mazuku

A mazuku is the geological name given to pockets of oxygen

Oxygen

Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
-poor air which can be lethal to any human or animal life inside. The term comes from Swahili and means "evil wind." Mazukus are created when an odorless and invisible gas such as carbon dioxide

Carbon dioxide

Carbon dioxide is a chemical compound composed of two oxygen atoms covalent bond to a single carbon atom. It is a gas at standard temperature and pressure and exists in Earth's atmosphere in this state....
accumulates in pockets low to the ground. CO₂ is heavier than air (oxygen

Oxygen

Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
and nitrogen

Nitrogen

Nitrogen is a chemical element that has the symbol N and atomic number 7 and atomic mass 14.00674?. Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78% by volume of Earth's atmosphere....
) which causes it to stay close to the ground, and is also undetectable by human olfactory or most visual conditions.

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Encyclopedia

A mazuku is the geological name given to pockets of oxygen

Oxygen

Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
-poor air which can be lethal to any human or animal life inside. The term comes from Swahili and means "evil wind." Mazukus are created when an odorless and invisible gas such as carbon dioxide

Carbon dioxide

Carbon dioxide is a chemical compound composed of two oxygen atoms covalent bond to a single carbon atom. It is a gas at standard temperature and pressure and exists in Earth's atmosphere in this state....
accumulates in pockets low to the ground. CO₂ is heavier than air (oxygen

Oxygen

Oxygen no O2 produced; 2) O2 produced, but absorbed in oceans & seabed rock; 3) O2 starts to gas out of the oceans, but is absorbed by land surfaces and formation of ozone layer; 4-5) O2 sinks filled and the gas accumulates]]...
and nitrogen

Nitrogen

Nitrogen is a chemical element that has the symbol N and atomic number 7 and atomic mass 14.00674?. Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78% by volume of Earth's atmosphere....
) which causes it to stay close to the ground, and is also undetectable by human olfactory or most visual conditions. (Other volcanic gases such as sulfur dioxide

Sulfur dioxide

Sulfur dioxide is the chemical compound with the formula SO2. It is produced by volcanoes and in various industrial processes. Since coal and petroleum often contain sulfur compounds, their combustion generates sulfur dioxide....
have pungent odors and sometimes a yellowish/off white haze associated with them). Gases that form mazukus themselves simply displace the local oxygen supply, essentially creating the outdoor hazard one would expect in a confined space

Confined space

Confined space is a term from labour -safety regulations that refers to an area whose enclosed conditions and limited access make it dangerous....
depleted of breathable air.

See also

Limnic eruption
Limnic eruption

A limnic eruption, also referred to as a lake overturn, is a rare type of natural disaster in which carbon dioxide suddenly erupts from deep lake water, suffocating wildlife, livestock and humans....
Meromictic Lakes
Henry's Law
Henry's law

In chemistry, Henry's law is one of the gas laws, formulated by William Henry in 1803. It states that:An equivalent way of stating the law is that the solubility of a gas in a liquid is proportional to the pressure of that gas above the liquid....
Raoult's Law
Raoult's law

Established by Fran?ois-Marie Raoult, Raoult's law states:Once the components in the solution have reached chemical equilibrium, the total vapor pressure p of the solution is:...
Lake Nyos
Lake Nyos

Lake Nyos is a crater lake in the Northwest Province, Cameroon of Cameroon, located about northwest of Yaound?. Nyos is a deep lake high on the flank of an inactive volcano in the Oku volcanic plain along the Cameroon line of volcanic activity....
Lake Monoun
Lake Monoun

Lake Monoun is a lake in West Province, Cameroon, Cameroon that lies in the Oku Volcanic Field . On August 15, 1984, the lake exploded in a limnic eruption, which resulted in the release of a large amount of carbon dioxide that killed 37 people....
Lake Kivu
Lake Kivu

Lake Kivu is one of the Great Lakes of Africa. It lies on the border between the Democratic Republic of the Congo and Rwanda, and is in the Albertine Rift, a part of the Great Rift Valley....
Disasters