Luanda and its two complex arches of vulnerability and hazard: the restinga and the low islands and the escarpments densely gullyed

Abstract

Luanda and its two complex arches of vulnerability and hazard: that of the sandy and low restingas (spits) and small islands that protect the bay of still waters of the town against the oceanic waves, and that of the escarpments in bedded sedimentary rocks densely gullyed. Tropical littoral savanna climate with alternation of a short period of heavy rainfalls during the first months of the year, the hottest, and a long and dry period, with lower temperatures (the cacimbo); the vegetation cover is a grassland with interspersed trees and shrubs, well represented on the plateau coated with red sands. The natural changes and those resulting from men's actions. The necessity of appropriated policies to survey the negative effects of the erosional processes.