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Natural hazards and people.

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Introduction

Natural Hazards and People (Learn at least two Hazards with examples) MEDCs LEDCs UK and Europe Earth- quakes Kobe, Japan Tuesday 17th Jan 1995 at 5.46 am. 7.2 Richter scale, 20km SW of Kobe. 20 seconds and unexpected. 5500 dead, 310,000 homeless. Death high as in Urban areas of Kobe, Osaka and Kyoto. Destructive boundary between Philippine, Eurasian and Pacific plates. Communications and bullet train damaged. 10 million Yen the cost. Bhuj in Gujurat region of India. 29 Jan 2001. 7.9 RS 8.46am for 45 secs. Over 6000 dead, lack of medical facilities and aid workers. Fault line of Eurasian and African plates ancient collision. Felt over 400 miles away. Epicentre; below Bhuj. Over 100,000 homeless. Secondary effects+ death from hunger, disease, dehydration and lack of aid N/A Volcanic Eruptions Mount St Helens, NW USA 18th May 1980. Subduction of Juan de Fuca under North American plate. ...read more.

Middle

None in MEDC recorded. Bangladesh Cyclone April 1991, 140,000 people died. 11pm at high tide in darkness. Islands and Delta where River Ganges and Brahmaputra meet was worst affected. Caused by warm tropical seas around 27 degreesC providing heat and water to drive the cyclone. 70%land area is under 1m sea level, 7m storm surges, shape of Bay of Bengal funnelled waves making them more destructive. �60 million economic damage. Too few shelters and ineffective warning systems. River floods 1988 September, Bangladesh. River meghna, Brahmaputra and Ganges flooded delta region. 1000 dead, 25 million homeless. Worsened by heavy monsoon rains, Summer snow ice melt, deforestation for grazing or wood causing soil erosion and less uptake of water. Floodplains inhabited for farming, Ganges diverted for irrigation. Silt from erosion also blocks channels. Rivers large draining over 5 countries and 70% below 1m sea level. ...read more.

Conclusion

UK, July 1989 500,000 homes in SE London without water. Those in poor health suffered. In UK it is a period of 15 + days without more than 0.2mm of rain. Hose pipe bans... Fire Sydney Dec 2001. Cause: Arson by adults and children. 100 + fires burnt in a 50 mile arc from the Blue Mountains in the North to Wollongong in the South. 100 ft high flames, 150 flames destroyed. Temp over 38 degrees C. Flames jumped containment lines but fire crews saved hundreds of houses burning down. Huge wildlife and environmental habitat destruction North Brazil and Venuezela, 21 March 1998 in the Roraima Yanomami Indian Reserve. Over 20,000 miles sq burnt. No rain for three months and little resources to fight fires. Even with firefighting aid from Argentina, fires not out until mid-April rains arrived. Cause; traditional slash and burn shifting cultivation techniques did not anticipate how dry the rainforest had become. Other concerns about the global change in the climate and mismanagement of rainforest through general commercial deforestation being a cause in failing rains. ...read more.

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