LES RISQUES LIES AUX MAZUKU DANS LA REGION DE GOMA, REPUBLIQUE DEMOCRATIQUE DU CONGO (RIFT EST-AFRICAIN) / RISKS ASSOCIATE WITH MAZUKU IN THE GOMA AREA, DEMOCRATIC REPUBLIC OF THE CONGO (EAST AFRICA RIFT)
Journal Title: Journal of Water and Environmental Sciences - Year 2017, Vol 1, Issue 2
Abstract
In the area north of Lake Kivu, in the western part of the African Rift, deep fractures allow the uptake of gas, especially carbon dioxide, into areas locally called mazuku; in Kiswahili places where a diabolical gas kills people. Generally, mazuku are depressions and / or fronts of lava flows where CO2 accumulates by gravity, forming areas where the air is very rich in CO2 and therefore toxic, even lethal. CO2 is a gas heavier than air, asphyxiating, irritates the eyes, nose and throat, and is lethal at concentrations greater than 15%. Unfortunately many mazuku are located within the perimeter of the city of Goma and in immediate surroundings. The population of Goma believes that the CO2 concentrations have decreased over time in the mazuku, yet four surveys of measurements carried out in the mazuku of the city of Goma show the opposite and it goes up to 70% in some sites. The mazuku are found in the city of Goma, but they are most abundant in the Kituku, Green Lake and Bulengo regions. It is unfortunately on these sites that new housing constructions are oriented, which exposes them to the risk already present, spaces with high concentrations of CO2 are already covered by buildings. This volcanic gas has caused and continues to cause deaths of humans and animals in the affected areas. We propose that warning signs be placed or even replaced in these high-risk zones and information and awareness campaigns on the risks associated with mazuku are also strongly recommended.
Authors and Affiliations
Marcellin Musosekania KASEREKA, Mathieu YALIRE, Abel MINANI, Christian Vikandi SAMBA, Annie Kinja BISUSA, Ephrem KAMATHE, Niche MASHAGIRO Niche MASHAGIRO, Muhindo SYAUSWA, Jonathan KAVUKE
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