Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
IMPACT ASSESSMENT OF TROPICAL CYCLONE HUD HUD ON COASTAL REGION OF VISAKHAPATNAM, ANDHRA PRADESH, INDIA
oleh: G. Vivek, T. Srinivasa Kumar
Format: | Article |
---|---|
Diterbitkan: | Copernicus Publications 2015-10-01 |
Deskripsi
Tropical cyclone is a rapidly rotating storm system characterized by a low pressure center, strong winds, and a spiral arrangements of thunderstorms that produce heavy rain. Tropical cyclones typically form over large bodies of relatively warm water. On 6<sup>th</sup> October 2014 Hud Hud originates from a low pressure system that formed under the influence of an upper air cyclonic circulation in the Andaman Sea. On 9<sup>th</sup> October 2014 the IMD department classified the Hud Hud as a very severe cyclonic storm on IMD scale and category 4 on Staffir-Simpson scale. The cyclone hit the coast of Visakhapatnam on 12<sup>th</sup> October 2014 at wind speed of 175 km/h which caused extensive damage to the city and the neighbouring districts. The damage caused by Cyclone Hud Hud not only changed the landscape of the port city, but also made it the first city in the country to be directly hit by a cyclone since 1891 as per the records of the IMD. The remote sensing technique used here is NDVI. NDVI will separate vegetation and non-vegetation part. The NDVI will be classified in ERDAS and calculated the area using ARCGIS. The satellite data of 4<sup>th</sup> October 2014 show s before the cyclone, 14<sup>th</sup> October 2014 shows after the cyclone and 7<sup>th</sup> December 2014 after two month of cyclone.