August 2012 to determine the physical aspects within the estuary beach system. This paper gives an overview of the factors affecting the slope of the estuary‚ sediment sizes and the tidal prisms. The beach slope was measured using the Emery board method and it was found to be characteristic of the KwaZulu-Natal coastline. Wave energy and sediment transport rates along the beach morphology are interlinked‚ high energy storms tend to erode and flatten beaches whilst lower energy waves tend to be responsible
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The Gossiping Clams 1 Long‚ long ago‚ when the world was new and the animals could talk‚ clams were the most talkative of all. And no wonder‚ for their mouths stretched the full length of their bodies. The clams not only loved to talk‚ they told stories as well. Some of the stories were true and some were not. 2 “Did you know‚” said one clam to Eagle‚ who was eating a fish on the beach‚ “that Raven says he is a much better hunter than you?” 3 Eagle’s feathers ruffled in annoyance. “Perhaps
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The Bradshaw model aims to show how different characteristics of a river change from the source to the mouth in a simplistic method that can easily be understood (greenfield geography‚ 2012). A geographical model is “an attempt to understand natures is high complexity. Therefore geographers try to develop simplified models of it” (Waugh‚ D. 2009). The model shows a series of triangles and each one represents a different fluvial characteristic. On the left is the source and on the right is the mouth
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Describe and explain the concept of a sediment cell and how it can be used in coastal management A sediment cell is a length of coastline in which interruptions to the movement of sand or shingle along the beaches or near shore sea bed do not significantly affect beaches in the adjacent lengths of coastline. In addition to this‚ it can also be referred to a sediment that is moved along the coast by long shore drift appears to form part of a circular cell which leads to it eventually returning up
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Vertical sediment core profile speciation for Fe‚ Mn‚ Ni‚ Co and Cr The range and the average concentration of Fe‚ Mn‚ Ni‚ Co and Cr in different fractions in cores MD and SH are given in the Table 2. In core MD‚ Fe‚ Mn‚ Ni‚ Co and Cr were highest in the residual fraction. Metals viz. Fe‚ Ni‚ Co and Cr were present in more than 65 % in the residual fraction‚ while Mn was around 40 %. Next to the residual fraction‚ Mn‚ Ni and Co were present in the Fe-Mn oxide fraction‚ while Fe and Cr in the organic
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mangle) FOREST SEDIMENTS Jorge Bauza‚ Julio M. Morell and Jorge E. Corredor Department of Marine Sciences University of Puerto Rico Mayaguez‚ Puerto Rico 00680 RUNNING HEAD: Nitrous Oxide in Mangrove Sediments keywords: nitrous oxide‚ nitrification‚ mangrove forest ABSTRACT The present study was undertaken to quantify the emission and distribution of nitrous oxide and to explore its relation with pertinent physical and chemical parameters of the red mangrove forest sediment. Rates of
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activity and sediment supply along an ephemeral channel in a southern Ethiopia‚ Arbaminch \ Abstract In this study‚ we examined the factors that control the spatial distribution of bank gully heads along a reach of an ephemeral river (Arbaminch‚ Ethiopia) in an area threatened by desertification in Southern Ethiopia. The activity of 58 gully heads was assessed in the field by pre-defined criteria such as sharp edges‚ presence of a plunge pool‚ tension cracks‚ recent deposited sediments‚ flow marks
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decrease) by sediment bioturbation under benthic invertebrate activity? Oligochetes tubificidae‚ famous invertebrate worms‚ was used as an active ecological engineer and biotubartion source. Biological sediment reworking generated by this invertebrates activity will be quantified using luminophores‚ inert particulate and dissolved tracers. One aquatic plant species‚ Typha latifolia was set in the aquarium and selected to accurately phyto-accumulate pollutant from roots system in the sediment. Phyto-extraction
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Koshi River. Koshi is known to be heavy sediment laden river‚ according to Hooning‚ 2011‚ the river carries 59 million m3 of sand annually. Paudel‚ 2010 suspects that based on the canal slope in SMIS‚ sediment transport criteria
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Before explaining how plate tectonics are related the concept of sediments must be understood. Sediments are pieces of solid material are deposited on Earth’s surface by way of wind‚ water‚ ice‚ gravity or chemical precipitation. This occurs through weather and erosion (McClearly‚ 2005). As convergent plates move towards each other‚ one plate is subducted under the other plate and as this is occurring the plates are moving accumulated sediment and rocks with them. Divergent boundaries also have an effect
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