PDF-TECHNIQUES FOR ESTIMATING 146 h4AGNlTUDE AND FREQUENCY OF FLOODS ON S

0272101 REPORT DOCUMENTATION 1 wPORT NO 2 Recipient146s Accession No PAGE 1 Title and Subtitle 5 Report Date Techniques for Estimating Magnitude and Frequency of 1984 6 r Authors 8 Performing Organiz. INTEGRATED . DEFENCE. . STAFF. EMERGENCY PREPAREDNESS AND DISASTER RELIEF OPERATIONS. Lt Gen Anil . Chait. , . PVSM. , . A. VSM. , . VSM. , ADC. Chief of Integrated Defence Staff. Armed Forces -. Watu. island. Changing climates. Imagine living with the constant danger that your home could be flooded at any time.. Our climate is changing and for many people living near riverbanks, the fear of flooding is never far from home.. Atmospheric-Science Seminar. Colin Raymond. October 2014. Outline. What We Know (IPCC Report). What We Don’t Know [Yet] (Jain & . Lall. 2001). Case Study (. Martius. et. al. 2013). What We Know. Aims. To know and understand how flood plains are formed. To know and understand the causes, effects and solutions of a flooding event. Floodplains. Floodplains and levees are formed by deposition in times of river flood. The river’s load is composed of different sized particles. When a river floods it deposits the heaviest of these particles first. The larger particles, often pebble-sized, form the . ’7’75 ’7’75 ’55 ’5 ’00’95 ’85’90 ’85’90 ’60’65 ’60’65 ’80 ’80 ’0 ’1 Alumni Reunion 2015 june 4-6 ONL IN MUNICIPALITY OF AMADORA. Emanuel Crucho | Geographic Information Division. Luís Carvalho | Civil Protection Municipal Service. Universidade Nova de Lisboa. Lisbon, January 21th | 2014. FLOOD CBA SEMINAR | LISBON, JANUARY 21th | 2014. NATURAL CATASTROPHES. . . THERE ARE TERRIBLE EVENTS CAUSED BY BOTH THE POWER OF NATURE AND BY MAN’S WORK. THEY ARE MAINLY DUE TO THE CONSTANT RELEASE IN THE ATMOSPHERE OF MASSIVE AMOUNTS OF EXTREMELY DANGEROUS POLLUTANTS, PREVALENTLY GASES, WHICH DETERMINE PROGRESSIVE, IRREVERSIBLE GLOBAL WARMING, WITH STAGGERING EFFECTS ON OUR PLANET.. Statistics 2011. 332 Natural Disasters were recorded. Killed 30,773 people. 244.7 million victims of these disasters. Costs $366.1 billion. China, the United States, the Philippines, India and Indonesia constitute together the top 5 countries that are most frequently hit by natural disasters. . National . Authority for Civil Protection . Luis Sá. Concepts. 1.By popular demand we know that a flood is an overflow of an expanse of water that submerges land.. 2. EU Floods directive defines a flood as a “. Tornadoes are . rotating columns of air that extend down from a storm cloud in the shape of a . funnel.. Anything . in the path of a tornado, including houses, cars, forests, and other ecosystems, . are . Catastrophic events. Before we can see how they affect ecosystems we need to understand how they form. HURRICANES. How do Hurricanes Form? . Stage 1: A Tropical Disturbance Forms. Most Atlantic hurricanes begin life as organized clusters of thunderstorms off the west coast of Africa. These thunderstorms form along waves in the prevailing trade winds. The waves, called easterly waves, can be more than 2500 km (1550 mi) long. The cluster of thunderstorms is called a tropical disturbance.. Elements of the physical environment, harmful to man and caused by forces extraneous to him or,. All atmospheric, hydrologic, geologic, and wildfire phenomena that have potential to affect humans, their structures, or their activities adversely. In natural catastrophes such as floods, cyclones, earthquakes, droughts, Tsunami, volcanic eruptions happen from time to time causing damage to the life and property.. Some disasters are caused by human activities such as fires industrial accidents, forest fires, epidemics are equally devastating.. LECTURE 13. Global Flood risk under climate change, 2013. FLOOD FREQUENCY ANALYSIS. It is a statistical probabilistic method. Flood magnitudes are determined corresponding to different return periods.