Coastal Systems (Routledge Introductions to Environment) by Simon Haslett

By Simon Haslett

Coastal Systems bargains a concise creation to the methods, landforms, ecosystems, and administration of coasts. every one bankruptcy is illustrated and contains topical case reports from all over the world such as:
* Tsunami's in Papua New Guinea
* cliff cave in in Southern England
* the nice Barrier Reef
* the Indian 'Super Cyclone' of 1999
* the influence of improvement within the Florida Keys.

Introductory chapters identify the significance of coasts and clarify how they're studied inside of a process framework. next chapters discover the function of waves, rivers and sea point alterations in coastal evolution. the ultimate bankruptcy experiences the human pressures and administration of coastal structures.

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Additional resources for Coastal Systems (Routledge Introductions to Environment) (2001)

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This situation may arise, for example, where submarine topography is variable, or where an incident wave approaches the shore obliquely with submarine topography descending uniformly offshore. 5). Shoaling promotes deceleration of wave-celerity, so that those parts of a wave in water shallower than the wave-base will slow, whilst sections of the wave still in water deeper than the wave-base will maintain its celerity. In this way the wave will bend or refract. On a map of refracting wavefronts it is possible to draw lines called orthogonals normal to the wave-front and extending to the shore.

Storm wave affected coasts, therefore, occur in the path of major storm tracks, such as northwest North America from Oregon to Alaska, northeast North America from Florida to Newfoundland, northwest European coasts of France, British Isles and Scandinavia, Atlantic and Pacific coasts of southern South America and southerly coasts of Australia and New Zealand. Storm wave affected coasts also occur in tropical latitudes, such as southeast Asia and the Arabian Sea, where they regularly experience tropical cyclones.

Expansion takes place in the same direction as pressure release and so joints open up parallel to retreating cliff faces. 10b), when large slabs of rock topple onto the shore. Variations in rock strength along the length of a cliff can often lead to differential erosion, where weaker rocks are eroded at a faster rate compared to relatively stronger rocks. This may result in the formation of caves, arches and stacks. Caves are progressively excavated through the combined action of hydraulic pressure, quarrying and abrasion exploiting a weakness in the rock, such as a fault.

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