Spiral movement of winds towards a low pressure centre is called a cyclone. Storms associated with low pressure and rising winds are called cyclonic storms. The movement of wind in a cyclone is counter-clockwise in the northern hemisphere and clockwise in the southern hemisphere.
if the wind speed exceeds 73 miles/hr, then it is called a cyclone
if the wind speed is less than 39 miles/hr then it is called a tropical depression and if the wind speed lies between 39 and 73 miles/hr it is called a storm.
control measures of a cyclone:
1. meteorological information should be given to people as soon as possible.
2. Development activities should be minimised along the frequently affected areas.
3. Modified construction techniques should be adopted to suit buildings in frequently affected areas.
Cyclone is a type of rotating storm that occurs over the seas and oceans near the tropic. A tropical cyclone is a storm system characterized by a large low pressure centre and numerous thunderstorms that produce strong winds and heavy rains. India has a long coastline and the second highest number of people in the world exposed to tropical cyclones. Cyclones strike India in May-June and October-November coinciding with the onset and retreat of monsoon. Coastal Andhra Pradesh, Odhisha, Tamil Nadu and Sunderbans of West Bengal are the major cyclone prone areas of India.
The Odhisha Super cyclone in october 1999 was one of the worst cyclones with wind velocities as high as 350 kmph. Cyclones are generally associated with sea surges, when sea level rises upto 7m. Cyclones are associated with heavy rains. The following factors lead to formation of cyclones:
1. Location and temperature are vital for the formation of cyclones
2. The location must be 5 to 15 degrees latitude on either side of the equator over oceans or seas.
3. The surface temperature of seas or oceans must be more than 26.5 C or above
4. Depression with convection current starts to gather clouds.
Cyclones are easy to predict. The Indian Meteorological Department (IMD) continuously monitors for any low pressure developing in the atmosphere above the ocean using radar. Advanced technology is used to predict the intensity of the cyclonic storm and the coastal area to be hit by any potential cyclone. The large belt along the east coast of India is prone to cyclones and the west coast is also prone to cyclones.
if the wind speed exceeds 73 miles/hr, then it is called a cyclone
if the wind speed is less than 39 miles/hr then it is called a tropical depression and if the wind speed lies between 39 and 73 miles/hr it is called a storm.
control measures of a cyclone:
1. meteorological information should be given to people as soon as possible.
2. Development activities should be minimised along the frequently affected areas.
3. Modified construction techniques should be adopted to suit buildings in frequently affected areas.
Cyclone is a type of rotating storm that occurs over the seas and oceans near the tropic. A tropical cyclone is a storm system characterized by a large low pressure centre and numerous thunderstorms that produce strong winds and heavy rains. India has a long coastline and the second highest number of people in the world exposed to tropical cyclones. Cyclones strike India in May-June and October-November coinciding with the onset and retreat of monsoon. Coastal Andhra Pradesh, Odhisha, Tamil Nadu and Sunderbans of West Bengal are the major cyclone prone areas of India.
The Odhisha Super cyclone in october 1999 was one of the worst cyclones with wind velocities as high as 350 kmph. Cyclones are generally associated with sea surges, when sea level rises upto 7m. Cyclones are associated with heavy rains. The following factors lead to formation of cyclones:
1. Location and temperature are vital for the formation of cyclones
2. The location must be 5 to 15 degrees latitude on either side of the equator over oceans or seas.
3. The surface temperature of seas or oceans must be more than 26.5 C or above
4. Depression with convection current starts to gather clouds.
Cyclones are easy to predict. The Indian Meteorological Department (IMD) continuously monitors for any low pressure developing in the atmosphere above the ocean using radar. Advanced technology is used to predict the intensity of the cyclonic storm and the coastal area to be hit by any potential cyclone. The large belt along the east coast of India is prone to cyclones and the west coast is also prone to cyclones.
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