Geomorphologic Mapping of Tete Municipality, Mozambique

Abstract

Geomorphological mapping consists of a set of techniques used to map landforms and the processes acting on the Earth's surface. It is a combination of techniques used in the representation of landforms and a useful tool to support information for integrated environmental analyses, territorial management, and geo-environmental risk assessment. Despite its importance and widespread use in several countries, including Brazil, most African countries do not conduct this type of mapping in their territories. This article aims to present the geomorphological mapping of the municipality of Tete in Mozambique. The methodology employed included the use of a Digital Elevation Model (DEM), high-resolution optical images, and fieldwork. The definition and classification of landforms followed the system proposed by Latrubesse and Carvalho (2006), which is nationally recognized and adaptable to different environments. The results indicate that the municipality's area is dominated by denudational units (~208 km²), which have sculpted large Receding Erosion Zones and Planation Surfaces, exhibiting different evolutionary stages. The aggradational units (~85 km²), in turn, are associated with the current and past dynamics of the Zambezi and Revúboè river systems. This study represents a pioneering product in the region and aims to provide support information for urban planning, environmental management, and hydrogeomorphological risk mitigation actions in the municipality of Tete.