Tag: northern plains

• Majuli has shrunk as the river surrounding it has grown. However it is recognised by Guinness Book of World Records as World's Largest River Island. 
  
• The island is formed by the Brahmaputra river in the south and the Kherkutia Xuti, an anabranch of the Brahmaputra, joined by the Subansiri River in the north.
  
• The island is inhabited by Mising tribes, Deori and Sonowal Kachri tribes. 
  
• At the world' largest inhabited riverine island, ancient cultural traditions and nature blend into the everyday life seamlessly.

• Summer: This is the period from April to June. The summer starts by mid-March and temperature starts rising progressively through April, May and June.
  
•  The temperature ranges from 32 ºC to 45 ºC. In May and June, the dry western region of Rajasthan records a maximum temperature of 48 ºC.
  
• The hottest of all seasons, summer extends in Rajasthan from April to June. During summers, the temperature in Rajasthan is very high and it ranges somewhere between 32 degree Celsius and 48 degree Celsius.
  

• A barchan or barkhan dune is a crescent-shaped dune. 
  
• These are also called Crescent dunes.
  
•  A Barchan dune is an arc-shaped sand ridge, comprising of well-sorted sand grains.
  
• Barchans face the wind, appearing convex and are produced by wind action predominately from one direction.
  
•  They are a very common landform in sandy deserts all over the world and are arc-shaped, markedly asymmetrical in cross section, with a gentle slope facing toward the wind sand ridge, comprising well-sorted sand.

The Northern Plain was formed by the deposits brought in by the three major river system Indus, Ganga and Brahmaputra and their tributaries. Alluvium was deposited at the foot–hills of the Himalayas for millions of years. These deposits are now the fertile Northern Plains. Alluvium is soil or sediments deposited by a river or other running water.

• The wind flowing in the northern plains in summers is known as 'loo'.
  
• Loo is a strong hot and dry winds that blows over the western Indo-Gangetic plain of North India and Pakistan.
  
• It is especially strong in the months of May and June.
  

Indian sub-continent is divided into plains, plateaus and mountains.

• Delta region is formed by deposition of sediments carried by rivers. In such regions alluvial soil is mostly formed.
  
• Alluvium is a loose soil or sediments which are formed by erosion by rainwater. It is typically made of small particles of silt and clay and larger particles of sand and gravel.
  

• Rajasthan receives scanty rainfall and hence experience severe famine.
  
• Scarcity of rainfall is due to following reasons:
  
• South-east monsoon arriving from Bay of Bengal loses its moisture by the time it reaches north-western part of India where Rajasthan is located.
  
• And the south-west monsoon arriving from Bay of Bengal flows parallel to the Aravalli mountains and reach north-east part of India.
  

The Western part of Rajasthan is a desert because the temperature remains very high in summer and the Aravallis lie parallel to the path of the Arabian Sea Branch of the southwest monsoons , there by causing no orographic rainfall. When there is an excess moisture in cloud that cannot hold it further and sudden upliftment of cloud with same moisture. As cloud moves suddenly upwards it looses it moisture holding capacity. This happens in windward side of mountain. These Aravalli range are not blocking winds which carry moisture. They are parallel to the direction of cloud movement, so there is no upliftment of clouds carring moisture, so there are very little rains in Rajasthan. Thus the deserts are formed.

•  The Kali Andhi, or black storm is a violent, squally dust storm occuring  in late spring in north-western India.
  
•  They are usually brief, but can block out the sun, drastically reduce visibility and cause property damage and injuries.
  
•  The Andhi heralds the imminent arrival of the monsoon .
  
• Andhi is seen Punjab, Rajasthan in India, a summer time blowing, it is also called sand wind.