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| Nyandwi, N.; Muzuka, A.N.N.; Shaghude, Y.W.. |
| Along the coast of Tanzania, coral reefs, marine terraces and beach ridges are among the most important geomorphological features indicative of the Pleistocene/Holocene sea level changes. Three major terrace units can easily be identified on the mainland coast, namely, Mtoni (youngest), Tanga and Sakura (oldest). Three terrace units have also been identified on the Islands of Unguja and Pemba. On the basis of the difference in the terrace elevations between the two terrace systems it is postulated that the marine terraces on the islands probably represent minor fluctuations of sea level, rather than major phases of sea level fluctuation. A sand beach on the seaward side and several sand ridges on the landward side represent the Recent phase. The oldest... |
| Tipo: Report |
Palavras-chave: Geology; Pleistocene; Holocene. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/818 |
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| Nyandwi, N.. |
| An assessment of the coastal erosion problems along selected stretches around the Zanzibar coastline as well as along the mainland coastline of Tanzania, indicated a significant contribution to the problem by human activities. During the study, 56 eroding beaches were examined to assess the extent of anthropogenic activities to the problem. Human-induced erosion was observed at nine sites. By interfering with natural processes, human activities either initiated erosion or enhanced its rate. The activities identified fall into three categories namely, removal of beach material, removal of the protection against wave battering and obstruction of sediment supply. |
| Tipo: Proceedings Paper |
Palavras-chave: Beach erosion. |
| Ano: 2001 |
URL: http://hdl.handle.net/1834/821 |
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