Application of new technologies for mapping the susceptibility to risk in the "Caminho de FERRO" [‘railway’] ravine in Luena (Moxico, Angola)
DOI:
https://doi.org/10.14195/1647-7723_27-1_6Keywords:
Erosion, unmanned aerial vehicle, geographic information system, Luena, ravinesAbstract
Currently, the places chosen for residential areas take some criteria into account, closeness to workplaces, good accessibility and landscape. But the topography of the land, such as the existence of gullies or watercourses are often disregarded, and these can become areas highly susceptible to the occurrence of floods and landslides. This problem is greatly magnified by erroneous human intervention, and therefore measures to minimize the damages caused by these phenomena are needed urgently. By using geographic information systems and unmanned aerial vehicles (drones), this research aims to produce cartographic elements that intrinsically and extrinsically characterize the sites susceptible to hidric erosion. The study area is a section of a ravine, known as the Caminhos de Ferro [‘Railways’], in Luena, a town in Moxico province (eastern Angola). The model created shows that there is a very high susceptibility to water erosion in the rainy season and moderate susceptibility in the dry period. It can create a risk for the railway infrastructure that connects the port of Lobito to Luau (border with the Democratic Republic of Congo).
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