Floods are the most frequent type of disaster worldwide. They can strike anywhere at anytime. Although floods can be predicted‚ they often cause massive damage and destruction of property. The typical effects of a flood are broken down into three sections. The Primary Effects are physical damage and casualties. The Secondary Effects include damaged water supplies‚ diseases‚ crops and food disruption‚ and The Tertiary Effect better known as the long-term effects are economic effects. The Primary
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very beautiful river it threatens many cities because of its spring and fall floods. The flood water tears away ranks and bridges and destroys fields and towns. To help control the flood waters they build dams. Two good things about these dams where that the slowed water flow and the created hydroelectric energy. To travel by boat on the Po you had to be very skilled. The river has many hazards such as low water‚ floods‚ whirlpools‚ and sand banks. The Po’s water is fed by 141 tributaries draining
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Carlisle Case Study: The Carlisle Floods of January 2005 1. Introduction/Location background information 2. What was the hydrology of the January 2005 flood? e.g. which rivers were involved/what was the rainfall (mm)/how high was peak discharge (cumecs) etc… 3. What caused the heavy rainfall? 4. Skills section: construct a hydrograph in excel using the data 5. What were the impacts of the flood event on the local population and the environment? Or you can pick your own river
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The phenomena of Natural Disasters An earthquake is sudden motion or trembling of the ground produced by the abrupt displacement of rock masses. HOW DO THEY OCCUR? The earth’s outer shell is divided into seven major and some smaller plates which are constantly in a dynamic state‚ pushing against‚ pulling away from‚ or grinding past one another. Forces build up as the plates attempt to move in relation to each other. When the adhesions along the fault give way‚ stored energy is released in the
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initial oil in place at the start of the flood. RF ED E A EV ED displacement efficiency EA areal sweep efficiency EV vertical sweep efficiency E A EV Volumetric sweep efficiency 4 2.3 Overall Recovery Efficiency • Displacement efficiency ED – the fraction of movable oil that has been displ aced from the swept zone at any given time or pore volume injected. Volume of oil at start of flood-Remaining oil volume ED Volume of oil at start of flood Soi S o S oi So Pore volume
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the resentment in the heart of peasants and the downtrodden would have been wiped out by taking timely action to suppress a revolt. A small crack in a dam may lead to a breach in the dam and flooding the area‚ if not repaired properly. The recent flood in Bihar could have been
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Orleans: A Perilous Future 3 Fault Tree One 6 Figure 1.1 6 Fault Tree Two 8 Figure 1.2 8 Conclusion 8 A bibliography 9 Introduction New Orleans: A Perilous Future The levees and floodwalls protecting New Orleans from hurricane’s and floods were designed to withstand a category 3 hurricane. When making landfall on August 29‚ 2005 Hurricane Katrina was designated a category 4 hurricane; later it was downgraded to a severe category 3. Hurricane Katrina‚ the costliest natural disaster in
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rainfall‚ which can cause rivers to overflow and devastate a whole community. Another culprit to flooding is hard dry soil. When the soil has not been replenished in a long period of time‚ it cannot absorb the downpour rapidly enough. Building on flood plains is also a growing concern. Floodplains are flat areas of land with higher elevation on both sides. After it rains it is a place where unwelcomed floodwaters are kept. If there is construction in floodplains it will only be destroyed by incoming
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Engineering Disaster Civil Engineers build significant structures that can last more than a century‚ some of these structures such as Burj Khalifa‚ pyramids and evil towers in France can be considered as landmarks‚ because of its history and its beauty of design. Civil Engineers study the four factors of building structures to determine which tools and materials they will use in order to build permanent structures. Although engineers studying the factors and take the determination‚ there is some
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The Boscastle Floods: August 16th 2004. Causes: Rain A hot day in August (16th 2004) Really torrential thunderstorm 60 mms in two hours Really tall convectional clouds The remnants of Hurricane Alex Valley shape Really steep sided deep valleys of the R. Valency and the R. Jordan The valleys funnel the water down towards Boscastle Small ‘flashy’ catchments that funnel water into rivers quickly. 23 sq. km. Rivers run off the high ground of Bodmin Moor (relief rainfall) Geology Impermeable
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