Assignment 4 Example | Topics and Well Written Essays - 1250 words

4 - Assignment Example During the flood, one is unable to face the harsh behavior of water and thus people are advised to move to the higher regions before the flood. 1. List and describe the most common causes of floods. Causes of Floods Three major causes are found to cause the floods. Theses causes include Tropical storms, Seasonal flooding, Coastal Flooding (Library.thinkquest.org, 2013). Tropical Storms Tropical storms and hurricanes remain to have high impact on our lives due to the devastating impact of the heavy winds carrying immense amount of water with them. The resulting rains in response to the hurricanes and tropical storms become a cause of flood. Tropical Depression produces a wind of speeds less than 38 miles per hour. In the tropical depression situation winds have relative less speed as compared to that in the hurricane (Erh.noaa.gov, 2013). However, the tropical depressions are found to produce immense rains. Such a type of phenomenon produces some major damages in Georgia with a tremen dous rainfall of about 28 inches that caused flooding. During a tropical Storm the speed of the wind can reach as high as 73 miles per hour and tropical storms are categorized due to having more wind speed (39-73 miles per hour) as compared to the tropical depression. Tropical storms produce immense rain falls that are followed by flooding but some damages are due to the heavy winds. The rainfalls during the tropical storms produce more water than the capacity of the rivers, streams and lakes and thus heavy flooding occurs. Seasonal Flooding In rainy season, (a prolonged raining period mostly in spring or peak summer) the rains may fall more than the capacity of the rivers, streams and lakes and thus the flooding occurs. The flooding is not the sudden rush of water into the streams, lakes and rivers but due to the prolonged period of rains. The water on the rivers, streams and lakes rushes out. The major reason of less absorption of water into the ground is that due to the rains, th e soil becomes saturated and the absorption rate due the unsaturated behavior of the ground lowers and thus the flooding occurs. The melting of the snow during the start of the summer is another reason of the seasonal. It is due to the heavy snow falls in the winter season and during the start of the summer, snow melts and is being converted to huge amount of water that rusher into the streams and at some instance it may become more than the capacity of the streams and rivers that thus the flooding occurs. Both melting of the snow and the rainy seasonal rainfalls may contribute in occurring flooding in combination. Coastal Flooding Due to the severe tropical storms and heavy winds, the winds tend to carry away the ocean water in hevy amounts and thus occur of the coastal areas. In this situation, the sea level rises to the ground level and winds tend to produce waves more than the ground level and flooding occurs. Higher velocity winds create surface turbulence and thus the ocean wa ves present flooding of the coastal areas. The phenomenon is often recognized as storm surge. Coastal flooding is also due to the impact of Tsunamis, volcanic eruption and landslides in the oceans. Tsunamis are caused due to the earthquake which occurs in the ocean not very far from the coastal region. An under oceanic earthquake