Parts of Cyclone | Types of Cyclones
While Andhra Pradesh state is been affected by intense heat, cyclone ‘Laila’ has arrived suddenly in the mid summer. Though it can lower the intensity of summer heat and cool the environment, there is a fear regarding the extent of thisunexpected guest and the range of loss because of him. Still the loss and tragedy left because of cyclone and floods in October of 2009 are fresh. Let us know more about these cyclones that are affecting the people frequently.
Long coastal region is present in India. Cyclones have become common every year. Actually, cyclone is an intense whirlpool. High level temperature is released because of these cyclones. Hence it is also known as heat instrument. It will be revolving round as like a spring. Pressure in between this cyclone will get lowered by 5 to 6 hecto Pascal. Velocity of air will reach speeds of 62kms per hour. A cyclone covers an area of 150 to 800kms. Cyclone can cause heavy winds,rains and high waves in the ocean. Cyclone will absorb heat from the ocean and depend on this heat for their survival. This energy is released through convection. Only three percent of it is used by the cyclone for the purpose of revolving.
The term cyclone arises from the Greek word ‘Cyclos’ which is the term for rolling of snake. Those cyclones formed in Atlantic Ocean are called Hurricanes and those formed in Pacific Ocean are called Typhoon.
Clock wise and anti clock wise
Cyclones formed in northern hemisphere revolve in clock wise direction while those formed in the southern hemisphere revolve in anti clock wise direction. It is because of the ‘Coriolis energy’ formed due to revolve of earth. This energy will pull the wind in right direction in the northern hemisphere and in left direction in the southern hemisphere. As a result the difference in clock wise and anti clock wise manner arises.
Three main parts in Cyclone
Eye: The central part of the cyclone is also called an eye. It will be relatively undisturbed when compared to the other parts. Pressure will be less in this place. Convection will be absent and if present it will be in less quantities. So, there will not be any clouds here. Clear sky can be viewed from here. Temperature will be high. Diameter of the eye will be 30 to 60kms.
Eye Wall: The region around the eye is termed as eye wall. Here, there will be more effect of superficial winds. Wind here will rotate around the eye at a faster pace. As a result, it will look like a rolling over snake. Wind will be moving at speeds of 200kms per hour in this region.
Cloud chains: Those clouds which come out side from cyclone are called cloud chains. They will make the cyclone bigger.
Generally, the cyclone gets weakened when it reaches the land from the sea. Lack of moisture and temperature out side the ocean is the cause. But the cyclone seen in 1999 in Orissa didn’t get weaken even it reached the coast after 24 hours.