Dangers And Destructions Of Floods And Hurricanes :: essays research papers

Dangers and Destructions of Floods and Hurri discountesFloods and hurricanes have been effecting the lives of people aroundthe world for years. This research paper is spill to state some of the worstfloods and hurricanes, and how future ones can be controlled.A flood is an overflow of water on dry land. The two types of floods be coastal and river floods. Coastal floods are the first topic in thisresearch paper.A coastal flood is the flooding of beaches and surrounding areasincluding bar spits and deltas. They can be effected by tidal waves and coastalcurrents. Coastal floods can cover a large amount of distance along a shore. Thelength of time a coastal flood is dangerous is usually very short. It depends onhow high the tide is which goes up and down twice a day. When the velocities ofhurricane winds become severe the round top of the waves become three or more feethigher than the previous high tide. Coastal floods can be caused by a number ofthings. Coastal floods can be caused by runoff, hurricane waves, tsunami(seismic sea waves), and hurricane rains. Coastal flooding can not only carepart on oceans but it can also take part on lakes. Coastal flooding can be agreat danger because coast lines are very densely populated areas. In the UnitedStates in the early 1990s 50% of the population was on a coastal county.1Although they shrink before reaching shore, wind generated waves have beenspotted to be as high as 30 m (100 ft) in the middle of the ocean.2 In 1970 amajor storm in the Bay of Bengal produced fleshy seas that flood regions ofEast Pakistan, killing about 200,000 people.3River flooding can happen a number of ways. The causes are rain,snowmelt, and ice jams. Soil can not absorb as much water with continuosmoistening. The longer that precipitation lasts the more water flows intostreams as runoff. Cloudburst floods only last for a couple hours, but they needa large amount of rainfall. This usually only happens in mountainous areas. Theyare called fl ash floods. Floods occurring from snowmelt and ice jams do not haveto be preceded by heavy rains. Moderate amounts of rain can make things evenworse because the ground does not absorb it. Floods can outgrowth in the failuredams, aqueducts, weirs, landfills, paving, construction, and storm sewers. Theyare artificial causes.In 1993 when rainfall lasted from April until July in Iowa, Illinois,Minnesota, Missouri, Wisconsin, South Dakota, Nebraska, and Kansas, it coveredabout 16 billion acres.4 Many deaths and $10 billion in damage was the result