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Natural Disasters

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Page Morneau

on 16 January 2013

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Transcript of Natural Disasters

Tornadoes photo credit Nasa / Goddard Space Flight Center / Reto Stöckli By Jess and Page Natural Disasters Introduction Earthquakes Tsunamis The most violent of all atmospheric storms Conclusion Natural Disasters are getting more intense and occur more often because of global climate change and in the future they are just going to get worse. Depending on the path the storm takes there can be minimal damage to the cities/towns or there can be extensive damage. Storms can be like a chain reaction for example if an earthquake occurs a tsunami may be triggered and if a hurricane hits land and generates enough wind and storm clouds then a tornado may occur. Science Behind Earthquakes Earthquakes are caused by plate tectonics slipping beneath each other and locking into place. After enough time the plates give causing a release of energy. The energy released is in the form of waves. The P-wave is felt immediately after the energy release and the S-wave is felt after wards. Economic Expenses Human Impact Habitat Destruction The Science Tsunamis are caused by an earthquake under the floor of the ocean. When a tsunami is starting to form the tide gets sucked back into creating a wave. When the earthquake happens it causes large volumes of water to come to the surface creating the waves. When the water is shallow and close to land the waves are bigger and stronger causing a lot of damage. Tsunamis can also be caused by volcanoes, land slides, and anything that moves the earth surfaces. The Science Behind Tornadoes Habitat Impacts Economic Expenses Human Impacts Hurricanes are caused by a number of factors that come into contact with each other. When tropical winds meet up with warm sea water it causes a tropical thunderstorm. As they build up their intensity they release heat, evaporation, and condensation which makes the storm grow in power. The Coriolis affect causes storms to be pulled into a rotation. This causes the warm and cold air in the storm to be cycled upward causing a hurricane. Once this storm reaches the equator the winds start to pick up and push the hurricane towards land. Hurricanes Hurricane Katrina The Science Human Impacts Habitat Impacts On average 10000 people die per year due to earthquakes. Usually the collapsing of buildings is the cause for most of the deaths but it can also be due to fires, mud slides, floods, or tsunami's. The clean up after the earthquake is very costly and time consuming which takes away for the economy. Economic Expenses Economic Expenses Habitat Impacts Human Impact When an earthquake hits it causes economic expenses to the local and global economy (if the earthquake causes a lot of damage). http://www.nssl.noaa.gov/education/svrwx101/tornadoes/

http://www.universetoday.com/75695/how-do-tornadoes-form/
Jerry Coffey, October 14, 2010 Tornadoes are usually the result of a super cell thunderstorm. When wind direction changes, cold air goes down while warm air rises and begins to spiral down, a funnel cloud is formed, known as the tornado. Some of the most violent tornadoes can have wind speeds of more than 250 mph, leaving a damage path a mile wide and 50 miles long. When the 7.0 magnitude earthquake hit Haiti in 2010 the estimated cost of the rebuilding process is 14 billion dollars The Haiti earthquake caused 230,000 deaths with hundreds of people still left injured The destruction done when an earthquake hits can be minimal or very extensive. When a tsunami hit the coast of Japan in 2011
the cost to help rebuild the city is an estimated
235 billion dollars. The Japanese tsunami/quake caused 15000 deaths so far and thousand more are injured and missing. Tsunamis have the ability to carry wipe out villages, cities and small towns and make them look like they never existed in the first place. http://abcnews.go.com/Business/HurricaneKatrina/story?id=2348619&page=1 Charles Herman 2006 http://curiosity.discovery.com/question/how-does-a-hurricane-form 2011 http://environment.nationalgeographic.com/environment/natural-disasters/earthquake-profile/ 2012 www.youtube.com Destroyed in Seconds
May 21,2009 http://www.nytimes.com/2012/08/16/world/americas/years-after-haiti-quake-safe-housing-is-dream-for-multitudes.html?pagewanted=all&_r=0
Deborah Sontang 2012 www.youtube.com Caught on Tape, January 2010 http://www.theglobeandmail.com/news/british-columbia/bc-planning-tsunami-cleanup-as-japan-canada-continue-funding-talks/article4567748/
September 2012 http://www.usnews.com/news/articles/2011/03/24/japans-quake-tsunami-among-most-costly-of-all-time Danielle Kurtzleben March 2011 www.youtube.com CNN, November 2011 An estimated 320 million trees were wiped out or severely damaged by Hurricane Katrina. This hurricane affected approximately 5 million acres of forest throughout Louisiana, Mississippi and Alabama. www.youtube.com, In Hurricane Katrina's Wake (short film by NASA)
Dec 10, 2011 Works Cited http://dsc.discovery.com/convergence/katrina/facts/facts.html http://news.nationalgeographic.com/news/2005/09/0906_050906_katrina_facts.html
Brian Handwerk, September 6, 2005 Hurricane Katrina has been considered one of the most deadly hurricanes in USA history, over 1,800 people were killed. Hurricane Katrina tore though the Southern United States in 2005, leaving houses in pieces, trees uprooted, lives lost, and communities unlivable and abandoned. Damage was caused over 100 miles (160 kilometers) from the storm's center. In the after math of Hurricane Katrina, hundreds of thousands of local residents were left unemployed. The total economic impacts in Louisiana and Mississippi alone, may have been about $150 billion. Fast Facts At its peak, Hurricane Katrina was classified as a category five storm. With that, the wind speeds were up to 175 miles per hour (280 kilometers per hour). Many refugees were living below the poverty line before Hurricane Katrina hit. Hurricanes are becoming more disastrous because of human activity. With cities building up and people moving closer to the world's coastlines, where hurricanes are more likely to occur, storms are going to be more destructive because the coastlines are so heavily populated. Now that forecasting and emergency response have improved, they have lowered hurricane casualty rates. Hurricanes and typhoons are generic terms for tropical cyclones, they are tropical or sub-tropical ocean storms with winds over 74 miles an hour (65 kilometers an hour). http://www.cnn.com/SPECIALS/2005/katrina/interactive/timeline.katrina.large/frameset.exclude.html Roughly 10,000 people had to take refuge in the Louisiana Superdome. Hurricane Katrina caused damage that affected migratory birds, coastal marsh vegetation, coastal floodplain forests, mangrove forests, estuaries, and the endangered manatee specifically in Pearl River, MS. http://pubs.usgs.gov/circ/1306/pdf/c1306_ch6_a.pdf
Stephen Faulkner, Wylie Barrow, Brady Couvillion, William Conner, Lori Randall, and Michael Baldwin Animals that had the ability to burrow underground and hide under thick cover could deal with this catastrophic event much easier than those that lived in trees and in the open. http://www.wisegeek.com/what-was-hurricane-katrina.htm The total cost of the damage caused by Hurricane Katrina was between $96-$125 billion, with $40-$66 billion in insured losses. Roughly 300,000 homes had been destroyed or made uninhabitable. The total economic loss from Hurricane Katrina was estimated to be $250 billion, taking into consideration gas production and economic growth were negatively affected. http://useconomy.about.com/od/grossdomesticproduct/f/katrina_damage.htm
Kimberly Amadeo Hurricane Katrina took one of the worst possible paths imaginable for the people of the southern USA. Some of the main money making industries were damaged, this includes the casinos in Mississippi, and the chemical plants and sugar crops in Louisiana. http://useconomy.about.com/od/criticalssues/a/Tornado-Damage.htm
Kimberly Amadeo, June 18, 2012 The outbreak in 2011 caused $5 billion in damage. Since 2008, the average of 800 tornadoes a year has increased to more than 1,300 a year. That year the total number of tornadoes was 881. The tornado outbreak killed 327 people, this was the third-deadliest single outbreak in U.S. history. The Largest Tornado Outbreak in U.S. history: April 25-27, 2011 In April 2011 there were 600 tornadoes that formed, although May is usually the worst month for tornadoes, April 2011 was the most active month for tornadoes on record. At least two of the storms were EF-5 twisters, producing wind gusts of more than 200 miles per hour. With wind speeds that wild, trees get uprooted or just snap, animals can get picked up and thrown miles from their homes, if a tornado goes through or near any forest or stream it destroys the habitat for the animals that live there and ones that feed off of the surrounding vegetation. Researchers believe that tornadoes are occurring more often now because of Global Climate Change. They say that with the changing climate it is causing strong updrafts, where the wind moves up and down, creating conditions that are more likely to cause tornadoes. The cost of a tornado outbreak, referring to the economy or the physical damage, depends on if it hits an urban or a rural area. Villages were wiped out leaving 500,000 citizens homeless, and some were carried by the waves away from the village. The city has been destroyed and it is estimated that it will take 5 years to repair the damage. When the Japanese quake/tsunami hit the debris was carried all the way over to British Columbia and now the province has to pay to clean up the debris and now there is a growing concern that there may be invasive species coming with it. Since tsunamis are waves from the ocean they can carry the debris out into the sea which causes habitat destruction for the sea and the species in it. The same is true that tsunamis can carry species onto land which does not help. Other countries have to also pay because tsunamis do carry debris through the waters so once they hit land those countries have to pay for the cleanup. For instance when the earthquake hit Haiti it collapsed buildings of all sizes, homes and open land is destroyed. The poverty level is through the roof and thousands of people are still left homeless, hungry, and trying to seek medical attention. Natural disasters are bad and can happen any time of the year even if it isn't their predicted seasons. Each year thousands of people are affected by these powerful storms and the cost to fix the damage can going into the billions of dollars. It can take seconds for a storm to wipe out a town but it will take years to replace and repair the damage. Earthquakes can also impact the species in the area because of the power it can cause forestry to collapse which is a food source, and shelter for the species and many species can also die because of the collapsing of their homes and lack of food. Tsunamis are terrible for the species sound the water because they wipe away everything so the species habitats are destroyed, food is destroyed, and the species themselves can be washed away to a different ecosystem and then they will not survive. Plants also suffer because they are drenched by the water but there is no sunlight so they cannot perform photosynthesis.
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