Tropical Cyclone Case Study

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A tropical cyclone is actually cyclonic storm, non-frontal storm system which is characterized by cold air, hot air, a low pressure center, a spiral rain bands and strong winds. Theses rotate clock wise in southern hemisphere and anti-clock wise in northern hemisphere. Frequency of cyclones affecting entire east coast of India is more than west coast of India. Span of last one hundred and ten years (1891-2001) east coast was affected 103 times by cyclone and west coast was affected 48 times. October and November, both month consist 58 % of total cyclones. Cyclone causes damage to public and private properties and severe damage to infrastructure, it affect development of region. People lost their lives, lost their livelihood because of natural…show more content…
Expected damage with increasing wind speed is explained belowabove in two tables one by Indian meteorological department and one by National hurricane centre United States of America (See table 2.2 and 2.3) . Squall and Gust are two types of wind at different speed and for different duration. Gust is short but rapid while squall is longer periods of increased wind speed. Table 2 2 Damage potentials of cyclone (IMD) Intensity Damage Expected Name KmpH Knots Deep Depression 50-61 28-33 Minor Damage to loose and unsecured structures Cyclonic Storms 62-687 34-47 Damage to thatched huts. Breaking of tree branches causing minor damage to power and communication Severe Cyclonic storm 88-117 48-63 Extensive damage to thatched roofs and hut. Minor damage to power and communication lines due to uprooting of large avenue trees. Flooding of escape routes Very severe cyclonic storm 118-167 64-90 Extensive damage to kutcha house. Partial disruption of power and communication line. Minor disruption of rail and road traffic. Potential threat from flying debris. Flooding of escape…show more content…
Fallen trees and power poles will isolate residential areas. Power outages will last for weeks to possibly months. Most of the area will be uninhabitable for weeks or months. Source:- (NWS, 2013) Classification of intensity of wind or squall and its expected damage is mentioned bellow 1) Storm wind/ squall 2) Torrential rain and inland flooding and 3) storm surge are main three elements of cyclone. Torrential and inland flooding: It is main reason for human life loss after cyclone because of drowning. It also damages transportation system and other infrastructures. It causes soil erosion and weakening of embankments. Storm Surge: It is rise of sea water level near coast caused by a severe tropical cyclone. It causes inundation of low lying areas of coastal regions, drowning human being and life stock. It causes erosion of beach and embankments. Destruction of vegetation and reduction of soil fertility are other effect Source:- (Huchinson, 2015) 2.1.1 Technological advancement Source: (IMD,

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