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Remote Sensing for Studying Nearshore Bottom Morphology and Shoreline Changes OceanDocs
Shaghude, Y.W..
The major objective of the present study is to demonstrate how remote sensing approach can be used for studying nearshore bottom morphology and shoreline changes in coastal Tanzania. Two study sites were used. In the first site, remote sensing satellite Landsat Thematic Mapper data was evaluated against known water depths from conventional echo sounding measurement taken on the eastern side of the channel. The correlation between the remote sensing data and the echo sounding mesurement was rather satisfactory, suggesting that the approach can roughly be used to investigate sea bottom morphology in the nearshore areas. In the second study site, remote sensing satellite data from Landsat Thematic Mapper and Enhanced Thematic Mapper were used to investigate...
Tipo: Journal Contribution Palavras-chave: Remote sensing; Sediments; Coastal erosion; Shorelines.
Ano: 2004 URL: http://hdl.handle.net/1834/195
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Shore Morphology and Sediment Characteristics South of Pangani River, Coastal Tanzania OceanDocs
Shaghude, Y.W..
The shore morphology and nearshore sediments between the Pangani and Kipumbwi rivers were investigated to describe the shore and the reef platform sediments characteristics and also to update information on recent shoreline changes along the Tanzania mainland coast. The information gathered during this study comes from field observations, sediment sampling of the area and interviews with Pangani residents. The investigated area is a patch reef coast with narrow or no beaches and fossil reef terrace islands offshore, Pangani bay and estuary are among the most prominent shore features. Historical information indicates that, both the bay, and the estuary have undergone significant changes during the last 60 years. While the growth of the estuary has mainly...
Tipo: Preprint Palavras-chave: Sedimentation; Coastal sediment; Sediments; Reefs; Shorelines; Sediment sampling.
Ano: 2004 URL: http://hdl.handle.net/1834/214
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Land, Sea and People in the New Millennium. OceanDocs
The present study was undertaken to investigate the observation that dolorite and shale shores in the Transkei tended to have less algal cover and to support more grazers than sandstone shores. The structure of rocky intertidal communities is determined by the interaction of a number of biotic and abiotic factors. The chemical and physical nature of the substratum has been shown to have an influence on colonization, but few studies have attempted to quantify experimentally the differences in succession observed on different substrata. Rock tiles (10 x 10 cm) cut from shale, dolorite and sandstone were placed on three shores, each dominated by one of the rock types, and monitored photographically for 18 months. Within each type two treatments consisting of...
Tipo: Other Palavras-chave: Shorelines; Algae; Sandstone.
Ano: 2000 URL: http://hdl.handle.net/1834/337
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