The delta region of the eastern coast is frequently struck by cyclones

• By early November, the low-pressure conditions get transferred to the Bay of Bengal from Northwestern India. • Over the Andaman Sea, the existence of cyclonic depressions is associated with the above mentioned shift in the low pressure conditions. • Rains are very heavy and widespread when these cyclones touch India at the Eastern coast. • Massive destruction is caused by these cyclones. • Heavy damage to life and property can be seen as the eastern coast has thickly populated deltas of Kaveri, Krishna and Godavari. • Majority of the rainfall received in the Coromandel Coast is due to cyclones and depressions. • These cyclones could arrive at the coasts of West Bengal, Odisha. Q. Give reasons as to why. (i) Seasonal reversal of wind direction takes place over the Indian subcontinent? (ii) The bulk of rainfall in India is concentrated over a few months. (iii) The Tamil Nadu coast receives winter rainfall. (iv) The delta region of the eastern coast is frequently struck by cyclones. (v) Parts of Rajasthan, Gujarat and the leeward side of the Western Ghats are drought-prone.

The cold weather season begins from mid November in northern India and stays till February. December and January are the coldest months in the northern part of India. (i)The temperature decreases from south to the north. The average temperature of Chennai, on the eastern coast, is between 24° - 25° Celsius, while in the northern plains, it ranges between 10° - 15° Celsius. Days are warm and nights are cold. Frost is common in the north and the higher slopes of the Himalayas experience snowfall. (ii)A characteristic feature of the cold weather season over the northern plains is the inflow of cyclonic disturbances from the west and the northwest. These low-pressure systems, originate over the Mediterranean Sea and western Asia and move into India, along with the westerly flow. They cause the much-needed winter rains over the plains and snowfall in the mountains. The mechanism of monsoons are discussed below: (i)The differential heating and cooling of land and water creates low pressure on the landmass of India while the seas around experience comparatively high pressure. (ii)The shift of the position of Inter Tropical Convergence Zone (ITCZ) in summer, over the Ganga plain (this is the equatorial trough normally positioned about 5°N of the equator – also known as the monsoontrough during the monsoon season). (iii)The presence of the high-pressure area, east of Madagascar, approximately at 20°S over the Indian Ocean. The intensity and position of this high-pressure area affec...

Tropical cyclones are depressions originating over Bay of Bengal. These tropical cyclones are often destructive. They cause heavy rains. These cyclones strike West Bengal and Bangladesh (Ganga Delta). They cross theEastern coast and affect the states of Orissa, Andhra Pradesh, Tamil Nadu and Kerala. The thickly populated deltas of Mahanadi, Godavari, Krishna and Kaveri are the main targets of these tropical cyclones.

Consider the following statements.(a) The amount of annual rainfall in the northern plains of India decreases from east to west.(b) The Coromandel Coast receives winter rainfall.(c) The delta region of the eastern coast is frequently strucked with cyclones.(d) The speed of jet streams increases during winter.Which of the statements given is/are correct? Consider the following statements. (a) The amount of annual rainfall in the northern plains of India decreases from east to west. (b) The Coromandel Coast receives winter rainfall. (c) The delta region of the eastern coast is frequently strucked with cyclones. (d) The speed of jet streams increases during winter. Which of the statements given is/are correct? (A) Since rainfall decrease from east to west in northern India because of the progressive decrease in the humidity of the winds. As the moisture-bearing winds of the Bay of Bengal branch move further and further island, they exhaust most of the moisture they carry along with them. This consequently leads to a gradual decrease. (C) The delta region of the eastern coast is frequently struck by cyclones because the cyclonic depressions which originate over the Andaman Sea generally cross the Eastern coasts of India and cause heavy and widespread rain. These cyclones are often very destructive. The thickly populated deltas of the Godavari, the Krishna and the Kaveri are frequently struck by cyclones which cause great damage to life and property. Sometimes these cyclones ar...

With the onset of winter season, there is a shift in low pressure conditions from the north-western plains to the Bay of Bengal. During the middle of November, this shift results in the occurrence of cyclones. The deltas of Krishna and Kaveri rivers (and also Bangladesh) have to bear the fury of these cyclones year after year. The delta region of the eastern coast of India is frequently struck by cyclones. This is because the cyclonic depressions that originate over the Andaman Sea are brought in by the sub-tropical easterly jet stream blowing over peninsular India during the monsoon as well as during the October to November period. During October, November, low pressure condition shifts from Himalayas to Bay of Bengal and Andaman sea area. Low pressure condition attracts sub-tropical easterly jet streams, which create air circulation, thereby resulting in Cyclones. So Delta region is struck by cyclones during October, November.