islands of india

 Islands of india           Date 24/01/21                अधिक जानकारी के लिए कमेंट करे 

 Geography of India Geography General Studies        पब्लिश्ड बाय संजीव सर 

 India's

 There are many islands in the west in the Aramb Sagar and in the east in the Bay of Bengal.  The islands of the Bay of Bengal are much larger than the islands of the Arabian Sea.  In fact, the reason for this is the formation of the islands of the Arabian Sea from the deposits of the coral and the islands of the Bay of Bengal are formed from the peaks of the sea mountains.


 The islands near the coast are mostly found in the Ganges delta.  Sagar Island 24 km near Hooghly.  Is long.  Short Island and Wheeler Island are located at the mouth of the river in the Mahanadi-Brahmani delta.  Bhasara-Mandla is a rocky island located to the northwest of Chilka Lake.  Crocodile eggs and rocky islands called Kota are also found near the Gulf of Mannar.



 

 On the west coast, there are Pijan islands near Bhatkal, Janjira near Harnoi and Hazare, Cannare, Butc   her, Elephanta and Arnala etc. near Mumbai.  Piram is located near Ghogha on the Kathiawad coast and Bhainsla Island on the south side.  Several small islands such as Khadiyabet, Aliabet are found near the wide arms of Narmada and Tapti.  Vaid, Nora, Pirtan and Karambhar etc. islands are located in Diu and Gulf of Kutch near Gulf of Khambhat.


 There are a total of 247 islands within India's border region, of which 204 are spread over the Bay of Bengal and the rest in the Arabian Sea and the Gulf of Mannar (between India and Sri Lanka).  In terms of structure, the islands of the Gulf are different from oceanic islands.  The Arabian sea islands are coral, while the islands of the Bay of Bengal are associated with tertiary mountains.  The total islands can be classified into two categories - the offshore islands which are 1 to 5 km from the coast.  Located far away and the remote islands which are 5 km from the coast.  Are located far from.


 Andaman and Nicobar Islands Andaman and Nicobar Islands


 These islands are spread in a north to south direction as a narrow chain.  These lie between 6 ° 89 'and 13 ° 34' northern latitudes.  The area of ​​the islands is 8249 sq km.  is.  The northern end of the islands is 901 km from the mainland.  Away, while the southern end is only 146.5 km from Sumatra (Indonesia).  Is situated at this distance.


 Andaman and Nicobar are made up of two main groups.  The Andaman consists of three islands of northern, central and southern Andaman, which is 121 km from Nicobar.  The wide ten degrees are separated by channels.  The Nicobar Group consists of 19 islands, of which Great Nicobar is the largest.



 


 These islands are a raised part of the sea of ​​tertiary oceanic mountains.  This chain of islands is actually an extension of the Arakanayoma chain of Myanmar, which later joins the island of Sumatra.  The most prominent peaks of the low hills of the islands are Saddlepeak (North Andaman, 788 m) and Mount Thulier (Great Nicobar, 642 m).  These islands are made up of sandstone, limestone and rock rocks of the Tertiary era.  There are many rivers, but they are very small and soon disappear in the creeks.  Andaman has very few perennial streams of clean water.  These streams falling from the hills are deep perennial and navigable.  Some islands are covered by coral reefs.  To the north of Port Blair are the islands of Baron and Narcondam islands.


 Islands constitute 86.4 percent of the total area covered by dense tropical evergreen forests and mangroves.  Nicobar's climatic conditions are suitable for rubber farming.


 Lakshadweep Lakshadweep


 Lakshadweep is a group of coral islands comprising 12 coral islands, three coral reefs and 5 submerged sand banks.


 In 1973, Laccadives, minicoy and Amindivigroup were combined and named Lakshadweep.  It is a District Union Territory with an area of ​​32 sq km.  is.  The island is 220 to 440 km from the Kerala coast.  Is situated at this distance.  All these islands are latent in the sea.  The word Lakshadweep means a group of 1 lakh islands.  A goal can also mean a sign or a symbol of purpose.  The island has been marked as a famous commercial route between Africa and India's south-western Malabar coast since ancient times.



 

 These islands have been formed by coral sand transformed into coastal sand due to wind and the movements of waves and currents.  Attols of Lakshadweep are replete with two important mineral deposits — phosphate and calcium carbonate — like other corals.  Phosphate deposits throughout the islands are formed by the emission of birds or waterfowl.  Calcium carbonate sand is found in large quantities in almost pure form in lagoons (seaside lake surrounded by coral ring).


 Lakshadweep is one of the largest territories in India.  Lakshadweep is important in terms of Indian economy, but being of strategic importance, its security is also necessary.  There is no area marked for flora or vegetables etc.  The reason for this is the high amount of porous soil found here.  The important commercial crop here is coconut, which is found on almost all the islands except Pitti island.  Lakshadweep coconut has the highest amount of oil (about 72 percent) in the world.  Sea grasses are significantly higher in the nits of lagoons, with the most common being Thalassia hemprichiia and Chemodosia isotifolia, which are eaten by sea turtles and sous (a marine animal of the type of dolphin).  Mangrove forests are found in the southern part of the island of Minicoy.  The coral reefs here often have an abundance of vegetation, where about 300 species of fish are found.  Tuna is the most important commercial fish here.  Fisheries industry is the main source of income of the people here.  The National Maritime Institute of Marine Technology, NIOT covers 500 m in 12 islands around Lakshadweep.  From 1200 m  Fish Aggregating Devices- FADs have been successfully designed and developed at a depth of.  Lakshadweep has immense potential for marine fisheries and seafood.  Minicoy, Agati, Suheli and Bitra islands are important islands for the production of tuna fish.


 Pamban Island Pamban Island


 Pamban Island with rocky surface lies between India and Sri Lanka.  It is an extension of the peninsular surface in Ramana district of Tamil Nadu.


 Geographical and topographical differences between Lakshadweep and Andaman-Nicobar Islands



 

 The Andaman-Nicobar Islands are part of the submarine zone of the Valit Mountains that have risen out of the sea.  Most of the islands in the Andaman-Nicobar Islands are made up of hard rock.  The topography of the islands is mountainous and rugged.  Some mountain peaks are extremely high.  The coastal area of ​​these islands is generally sloping, but some of the rock and silica rock rocks are directly in the sea.  The coastline is very wide.  The currents are small and have mild flow.


 The islands of the Lakshadweep group are made up of corals and are just less than five meters high from the sea.  The topography here is flat except for one or two hills or streams.  The narrower lagoon is in the windward direction of the island, while the shields are extremely sharp on the eastern seaboard.  The upper crust of the island is made up of coral sand and its bottom layer is of metamorphic rocks.


 Geopolitical importance of Andaman and Nicobar Islands Geo-political Importance of the Andaman and Nicobar Islands


 The Indian Ocean has no formal boundaries.  The points of entry into it, however, are well decentralized.  Andaman-Nicobar Islands is one such point.  The remote entrance to the Indian Ocean passes through Indonesia's watershed.  The narrow Malacca Water Treaty, (located between Sumatra and Malaysia) that connects the Pacific Ocean to the Indian Ocean, passes through the Andaman-Nicobar.  By the middle of the twentieth century, the Indian Ocean was the main gateway for commercial and cultural integration, but now it has also acquired geopolitical importance.  In order to aspire for leadership in the Indian Ocean, the strategic location of the Andaman and Nicobar Islands has become of special geopolitical importance.

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