By Simon Haslett

Coastal Systems bargains a concise creation to the approaches, 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 determine the significance of coasts and clarify how they're studied inside a approach framework. next chapters discover the position of waves, rivers and sea point adjustments in coastal evolution. the ultimate bankruptcy experiences the human pressures and administration of coastal platforms.

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

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Source: modified from Briggs et al. 2b, p. 303) where Co is wave-velocity (m s−1) of a deep water wave. An observation that can be made from this equation is that waves with a high wave-period, and therefore, a long wave-length, travel faster than low wave-period, short wave-length waves (Suhayda and Pettigrew 1977; Pethick 1984). Because we are dealing with coasts, all waves that are relevant to our study eventually encounter water depths shallower than wave-base (a depth equal to one quarter of the wave-length).

This process is often dramatically seen with the drowning of coastal forests that colonised the coast during the interseismic period, which may last several hundreds of years. Long and Shennan (1998) provide an example from the Washington-Oregon coast, USA. gradient, and in many respects their topography is very similar to leading edge coasts. These are known as neo-trailing edge coasts and the present-day coasts of the Red Sea belong to this subdivision. As divergence progresses, the sea expands and erosion of the coast increases, both by wave activity at the shoreline, and through the action of high energy streams flowing down steep hills.

Diffraction. This modification process allows waves to enter into areas perceived to be protected, such as the lee-side of islands, behind breakwaters and within harbours. Island shadow zones are often characterised by choppy wave conditions as waves diffract in from both sides of the island, sometimes creating conditions more hazardous to sailors than exposed coasts, and makes island hopping quite uncomfortable for those without sea-legs! Also, harbours and breakwaters should be designed to minimise diffraction by aligning structures parallel to the fetch direction, as far as is possible, to protect valuable water-craft and sea-side buildings from storm wave attack.

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