Cyclone Gaja

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Cyclone Gaja drishtiias.com/printpdf/cyclone-gaja A deep depression in the bay of bengal has intensified into a cyclonic storm and is likely to hit the coasts of Tamil Nadu. There is long sea travel ahead for Gaja, along with that sea surface temperatures are also warm and low vertical wind shear. Besides this, Madden-Julian Oscillation (MJO) is also in the favourable zone. All these factors would be responsible in providing more strength to the system. The cyclone Gaja means elephant in Sanskrit language and has been named by Sri Lanka. It will be the second cyclone to hit the coastal area in a month after Cyclone Titli wreaked havoc in Odisha and Andhra Pradesh. 1/2 Madden-Julian Oscillation The Madden-Julian Oscillation is a major fluctuation in tropical circulation and rainfall that moves eastward along the equator, and circles the entire globe in a span of 30–60 days on an average. The MJO, therefore is not static and is a moving system of wind, cloud and pressure that brings rain as it circles around the equator. The phenomenon takes its name from the two scientists who identified it in 1971 — Roland Madden and Paul Julian. In the active phase, MJO results in more than average rainfall for that time of the year, while in the suppressed phase, the area receives less than average rainfall. The effect of the MJO is witnessed mainly in the tropical region, in the band between 30 degrees North and 30 degrees South of the equator, even though the mid-latitude regions in both hemispheres also feel its impact. 2/2.

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Study Report on Gaja Cyclone 2018 Study Report on Gaja Cyclone 2018
Study Report on Gaja Cyclone 2018 Study Report on Gaja Cyclone 2018 A publication of: National Disaster Management Authority Ministry of Home Affairs Government of India NDMA Bhawan A-1, Safdarjung Enclave New Delhi - 110029 September 2019 Study Report on Gaja Cyclone 2018 National Disaster Management Authority Ministry of Home Affairs Government of India Table of Content Sl No. Subject Page Number Foreword vii Acknowledgement ix Executive Summary xi Chapter 1 Introduction 1 Chapter 2 Cyclone Gaja 13 Chapter 3 Preparedness 19 Chapter 4 Impact of the Cyclone Gaja 33 Chapter 5 Response 37 Chapter 6 Analysis of Cyclone Gaja 43 Chapter 7 Best Practices 51 Chapter 8 Lessons Learnt & Recommendations 55 References 59 jk"Vªh; vkink izca/u izkf/dj.k National Disaster Management Authority Hkkjr ljdkj Government of India FOREWORD In India, tropical cyclones are one of the common hydro-meteorological hazards. Owing to its long coastline, high density of population and large number of urban centers along the coast, tropical cyclones over the time are having a greater impact on the community and damage the infrastructure. Secondly, the climate change is warming up oceans to increase both the intensity and frequency of cyclones. Hence, it is important to garner all the information and critically assess the impact and manangement of the cyclones. Cyclone Gaja was one of the major cyclones to hit the Tamil Nadu coast in November 2018. It lfeft a devastating tale of destruction on the cyclone path damaging houses, critical infrastructure for essential services, uprooting trees, affecting livelihoods etc in its trail. However, the loss of life was limited.
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