Although cyclones affect the entire coast of India, the East Coast is more prone compared to the West Coast. This is because of the special nature of the coastline, the shallow coastal ocean topography and the characteristics of tide in the North Bay of Bengal region. Content Filtration 6. They consist of the eye, eyewall and rainbands. The United States experiences approximately 1,700 mesocyclones a year, with 50 per cent of these turning into tornadoes. Polar cyclones can also be formed quickly (sometimes less than 24 hours), and their direction or movement cannot be predicted. When the velocity of winds increases to such an extent that they attain gale force, the atmospheric disturbance or cyclone is called a cyclonic storm. Out of the cyclones that develop in the Bay of Bengal, over 58 per cent approach and cross the east coast in October and November. On 12 November 1970, the Bhola Cyclone swept across the southern districts of East Pakistan, killing over 300,000 people. There are 13 Coastal States and UTs in the country, with about 84 coastal districts affected by tropical cyclones. The cold front moves faster than the warm front ultimately overtaking the warm front. These zones contract to form weather fronts as the circulation of the cyclone closes and gets more intense. Further, the high density of population, low awareness of the community about cyclones and their risks, inadequate response and preparedness add to the severity of the problem. Direct damage is generally the result of wind damage to the walls, windows or roofs, which allows water to penetrate the buildings. Tropical Cyclone IDAI made landfall on the night of 14 to 15 March near Beira City, Sofala Province, in central Mozambique. A total of 170 properties across the region have been destroyed or severely damaged, and another 491 have sustained moderate or minor damage. From severe thunderstorms sometimes spiralling wind descends like a trunk of an elephant with great force, with very low pressure at the centre, causing massive destruction on its way. Disaster Summary Sheet 1. A more technical definition of a tropical cyclone is: A non-frontal low pressure system of synoptic scale developing over warm waters having organised convection and a maximum mean wind speed of 34 knots or greater extending more than half-way around near the centre and persisting for at … From Simple English Wikipedia, the free encyclopedia, https://simple.wikipedia.org/w/index.php?title=Cyclone&oldid=7397446, Commons category with local link different than on Wikidata, Creative Commons Attribution/Share-Alike License. Tropical storms, cyclones, hurricanes and typhoons, although named differently, describe the same disaster type. Ministry of earth science is assigned for disaster management of cyclone. When the clouds extend to heights where sub-zero temperature prevails, hails are formed and they come down as hailstorm. Terms of Service 7. Later in their life cycle, cyclones form what is called an occluded front. For this reason, the well-known tropical cyclone severity categories used by the Bureau of Meteorology to communicate warnings are based on maximum gust strengths. The process of cyclone formation and intensification is described as Cyclogenesis. The conditions favourable for the formation and intensification of tropical storms are: (i) Large sea surface with temperature higher than 27°C; (iii) Small variations in the vertical wind speed; (iv) A pre-existing weak low-pressure area or low-level- cyclonic circulation; (v) Upper divergence above the sea level system. The DSS helps understanding what the actual impact and priority needs after a cyclone … Weakening may also occur if the cyclone moves into an unfavourable wind regime which disrupts the structure of the system. In other parts of the world they are called hurricanes or typhoons. Sometimes a decaying tropical cyclone may interact with a weather system in higher latitudes to cause impacts far from the tropics. A Cloud Enabled Automatic Disaster Ysis System Of Multi Sourced Streams An Exle Synthesizing Social Media Remote Sensing And Wikipedia Sciencedirect. The problem can be fathomed from the fact that during the past two and a half centuries, 20 out of 23 major cyclone disasters (with human loss of life 10,000 or more and not considering the damage) in the world have occurred over the Indian Subcontinent (India and Bangladesh). Find paragraphs, long and short essays on ‘Cyclone’ especially written for school and college students. A hurricane is a tropical cyclone that occurs in the Atlantic Ocean and northeastern Pacifi… The passage of front causes abrupt changes in the weather conditions over the area in the middle and high latitudes. Impact of global warming-induced sea level rise due to thermal expansion is more pronounced in the Bay of Bengal due to the shallowness of the waters. Cyclone Fani 6 Things You Should Know About This Severe. A winter storm comes along with high wind speeds, gusts, thunderstorms, rain and often storm surges. Thunderstorms are caused by intense convection on moist hot days. Impact of Cyclone on the Coastal Ecosystem: ‘Coastal ecosystem’ includes estuaries and coastal waters and lands located at the lower end of drainage basins, where streams and river systems meet the sea and are mixed by tides. Those near the Arctic Circle are colder, more unpredictable and random in movement and can last for short and very long periods of time. Uploader Agreement, Tropical Cyclones and Western Disturbances, Tsunami: Compilation of Essays on Tsunami | Natural Disasters | Geography, Disasters: Compilation of Essays on Disasters | Hindi | Geography, Essay on Natural Disasters: Top 12 Essays | Geography, Essay on Landforms: Top 5 Essays | Geomorphology | Branches | Geology, International Tourism in India: Introduction, History, Trends, Opportunities and Future, Forestry: Definition, Branches, Costs, Programme and Conclusion | Geography, Contribution of Russia to World Geography (In Hindi), French Scholars and their Contribution to Geography in Hindi, Essay on the History of Cyclones in India, Essay on the Impact of Cyclone on the Coastal Ecosystem. A mature tropical cyclone is characterized by the strong spirally circulating wind around the centre, called the eye. Location, location, location! A thunderstorm is a well-grown cumulonimbus cloud producing thunder and lightning. The systems developing in the mid and high latitude, beyond the tropics are called the middle latitude or extra tropical cyclones. Typically, however, the cyclones are formed in the same way. Plus, they can last from a day to several weeks. The main source of energy for tropical cyclones is the warm oceans in the tropical regions. The frequent disasters nullify the development of several years and turn the clock back for these vulnerable families. Definition of Cyclone: Cyclones are also termed as atmospheric disturbances. Cyclone is the general term for a variety of low pressure system types, such as tropical cyclones, extra tropical cyclones and tornadoes. It is an intenselow-pressure centre associated with theconvergence of wind rotating inwards to the low-pressure point forming a closed cyclonic vortex. Cyclones are natural events, which can neither be wished away nor prevented. The United Nations called Cyclone Pam the South Pacific's worst natural disaster. It is caused by a combination of strong winds driving water onshore and the lower atmospheric pressure in a tropical cyclone. Areas of low pressure surrounded by high pressure is called as cyclone. Cyclones, Hurricanes and Typhoons are powerful storms that have winds in excess of 119 kilometres per hour (74 MPH). The tornado over the sea is called water sprout. km (about 7% of world’s mangrove areas). Extra tropical cyclones formed along the polar front. In Australia, this is the east side on the north-west and north coasts and the south side on the east coast. On many occasions people are not even aware of the risks involved. Among the natural disasters occurring on the surface of the earth, cyclonic winds are the most dangerous and destructive. If the sustained wind reaches hurricane force of at least 118km/h the system is defined as a severe tropical cyclone. On an average, about 10 cyclones develop over Australian waters each year and around six of these cross the coast. Only 25 per cent of the cyclones that develop over the Arabian Sea approaches the west f coast. A tropical cyclone of specific intensity when it strikes the east coast of India and Bangladesh, usually produces a higher storm surge compared to that when such a cyclone strikes elsewhere in the world. This page was last changed on 24 February 2021, at 19:04. Tornado is a rotating column of air accompanied by a funnel-shaped cloud that progresses in a narrow path over the land. The … One of the major reasons for this is the serious storm tide problem in these coasts. This is because, from above, the winds spiral around the eye in a clockwise direction (in the Southern Hemisphere). Depending on its location and strength, a tropical cyclone is referred to by different names, including hurricane , typhoon (/taɪˈfuːn/), tropical storm, cyclonic storm, tropical depression, or simply cyclone. CYCLONE Cyclone refers to any inner spinning storm that rotates around a low- pressure center. Some 250 properties are still to be assessed. Disclaimer 8. The coastal ecosystem includes saline, brackish (mixed saline and fresh) and fresh waters, as well as coastlines and the adjacent lands. Cyclone Bangladesh government has taken some bold steps like; introduction of multi hazard warning system, National Disaster policy and action plan for sustainable disaster management .Every time a cyclone hits the coastal area of Bangladesh it causes innumerable loss for the country damaging property and killing people. They range in shape from circular, elliptical to ‘V’ shape. During the same period 48 tropical cyclones crossed the West Coast, of which 24 were severe cyclonic storms. Such a phenomenon is called a tornado. It has a low pressure centre and clouds spiraling towards the eyewall surrounding the "eye", the central part of the system where the weather is normally calm and free of clouds. Drawing energy from the sea surface and maintaining its strength as long as it remains over warm water , a tropical cyclone generates winds that exceed 119 km (74 miles) per hour. On many occasions, the livelihood requirements of people are detrimental to maintaining the delicate balance of the fragile coastal ecosystem. Flooding can wreak havoc over vast areas, inundating land, isolating communities and destroying infrastructure. Account Disable 11. Tropical Cyclones July 2011 Page 1 of 16 Document objective This disaster summary sheet (DSS) provides a general profile of the potential impact of a tropical cyclone. It provides a comprehensive guideline to deal with prevention, mitigation, response and recovery during a disaster. From the eye wall rain bands may radiate and trains of cumulus and cumulonimbus clouds may drift into the outer region. The Cyclone brought strong winds (180 – 220 km per hour) and heavy rain (more than 200 mm in 24 hours) across the provinces of Sofala, Manica, Zambezia, Tete and Inhambane, causing rivers to overflow with flood waters reportedly rising above 10 meters. National Disaster Management Plan was launched in 2016. Storm surge, or coastal inundation by seawater, is a lesser known phenomenon but can be the most dangerous element of a cyclone. 9 CHAPTER 2- CYCLONE Source: en.wikipedia.org 2.1- ETYMOLOGY— The word Cyclone is derived from the Greek word Cyclos meaning the coils of a snake. Support for West Australians affected by Cyclone Seroja has been extended by the Federal Government, with Scott Morrison set to tour the disaster zone today. DISASTER MANAGEMENT CYCLONE BY PRITESH ANJIKAR 2. Small islands were swept away and dead bodies of humans and cattle lay strewn across the devastated landscape. 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