This paper describes the impacts of unplanned urban expansion and land surface change in the city of Bamenda in Cameroon, the underlying causes and the ecological and social implications. This expansion has placed great stress on forest, land and water ecosystems. Much of the city’s rapid growth in population has been accommodated in informal settlements on steep slopes and flood plains, with l...

In the present study, 1,421 cattle in 32 herds within nine districts, which are important cattle-producing centers in the nine provinces of Zambia, were tested for Rift Valley fever by the indirect immunofluorescence assay. One hundred and forty-seven cattle (10.5%) in 28 herds (88.9%) in the nine districts tested were positive for Rift Valley fever implying a country-wide distribution. In dist...

This research deals with the characterization of areas associated with flash floods and erosion caused by severe rainfall storm and sediment transport and accumulation using topographic attributes and profiles, spectral indices (SI), and principal component analysis (PCA). To achieve our objectives, topographic attributes and profiles were retrieved from ASTER-V2 DEM. PCA and nine SI were deriv...

The details of stratigraphic units and structures making up six coronae and their regional surroundings on Venus were examined using full resolution Magellan images and stereoscopic coverage. Altimetry and stereoscopic coverage were essential in establishing the local stratigraphic relationships and the timing of corona-related topography. The degree of preservation of signatures of earlier cor...

[1] Since its insertion into orbit about Mercury in March 2011, the MESSENGER spacecraft has imaged most previously unseen regions of the planet in unprecedented detail, revealing extensive regions of contiguous smooth plains at high northern latitudes and surrounding the Caloris basin. These smooth plains, thought to be emplaced by flood volcanism, are populated with several hundred ghost crat...

Penelitian ini dirancang untuk dapat memberikan interpretasi landform dengan melakukan penilaian berdasarkan indek posisi topografi ( Topographic Position Indeks ) data DEM, slope serta elevasi tujuan mengetahui nilai posisis suatu wilayah khususnya di Pulau Lombok menginterpretasikan profil memperhatikan sisi visibilitas yang menjelaskan struktur dan kondisi objek. Analisis digunakan dalam pen...