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Bengal Fan

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The Bengal Fan , also known as the Ganges Fan , is the largest submarine fan on Earth.

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114-774: It is located in the Bay of Bengal , being about 3,000 km (1,900 mi) long, 1,430 km (890 mi) wide with a maximum thickness of 16.5 km (10.3 mi). The fan resulted from the uplift and erosion of the Himalayas and the Tibetan Plateau produced by the collision between the Indian Plate and the Eurasian Plate . Most of the sediment is supplied by the Ganges and Brahmaputra rivers which supply

228-652: A water sharing dispute arose between India and East Pakistan (now Bangladesh) after India declared its intention to build the Farakka Barrage. The original purpose of the barrage, which was completed in 1975, was to divert up to 1,100 m /s (39,000 cu ft/s) of water from the Ganges to the Bhagirathi-Hooghly distributary to restore navigability at the Port of Kolkata . It was assumed that during

342-546: A decline in the overall availability of fish resources; changes in species composition of catches; the high proportion of juvenile fish in the catch; and changes in marine biodiversity , especially through loss of vulnerable and endangered species . The transboundary nature of these issues are: that many fish stocks are shared between BOBLME countries through the transboundary migration of fish, or larvae . Fishing overlaps national jurisdictions, both legally and illegally – overcapacity and overfishing in one location forces

456-453: A few of the marine animals. Bay of Bengal hogfish ( Bodianus neilli ) is a type of wrasse which live in turbid lagoon reefs or shallow coastal reefs. Schools of dolphins can be seen, whether they are the bottle nose dolphin ( Tursiops truncatus ) , pantropical spotted dolphin ( Stenella attenuata ) or the spinner dolphin ( Stenella longirostris ) . Tuna and dolphins usually reside in the same waters. In shallower and warmer coastal waters

570-576: A large estuarine delta that holds a mangrove area in the Ganges River Delta . A transboundary issue is defined as an environmental problem in which either the cause of the problem and/or its impact is separated by a national boundary; or the problem contributes to a global environmental problem and finding regional solutions is considered to be a global environmental benefit. The eight Bay of Bengal countries have (2012) identified three major transboundary problems (or areas of concern) affecting

684-1895: A migration of fishers and vessels to other locations. All countries (to a greater or lesser degree) are experiencing difficulties in implementing fisheries management , especially the ecosystem approach to fisheries . Bay of Bengal countries contribute significantly to the global problem of loss of vulnerable and endangered species . The main causes of the issues are: open access to fishing grounds; Government emphasis on increasing fish catches; inappropriate government subsidies provided to fishers; increasing fishing effort, especially from trawlers and purse seiners ; high consumer demand for fish, including for seed and fishmeal for aquaculture ; ineffective fisheries management; and illegal and destructive fishing. Ganges Uttar Pradesh : Bijnor , Fatehgarh , Kannauj , Hardoi , Bithoor , Kanpur , Lucknow ( Gomti tributary), Prayagraj , Mirzapur , Varanasi , Ghazipur , Ballia , Kasganj , Farrukhabad , Narora Bihar : Begusarai , Bhagalpur , Patna , Vaishali , Munger , Khagaria , Katihar Jharkhand : Sahibganj West Bengal : Murshidabad , Palashi , Nabadwip , Shantipur , Kolkata , Serampore , Chinsurah , Baranagar , Diamond Harbour , Haldia , Budge Budge , Howrah , Uluberia , Barrackpore Delhi : ( Yamuna ) tributary Rajshahi Division : Rajshahi , Pabna , Ishwardi Dhaka Division : Dhaka , Narayanganj , Gazipur , Munshiganj , Faridpur Chittagong Division : Chandpur , Noakhali 43,900 m /s (1,550,000 cu ft/s) The Ganges ( / ˈ ɡ æ n dʒ iː z / GAN -jeez ; in India: Ganga , / ˈ ɡ ʌ ŋ ɡ ɑː / GUNG -ah ; in Bangladesh: Padma , / ˈ p ʌ d m ə / PUD -mə )

798-666: A new channel. This new main channel of the Brahmaputra is called the Jamuna River. It flows south to join the Ganges-Padma. During ancient times, the main flow of the Brahmaputra was more easterly, passing by the city of Mymensingh and joining the Meghna River. Today this channel is a small distributary but retains the name Brahmaputra, sometimes Old Brahmaputra. The site of the old Brahmaputra-Meghna confluence, in

912-410: A religious iconoclast himself, asked for a handful of his ashes to be thrown into the Ganges. "The Ganga", he wrote in his will, "is the river of India, beloved of her people, round which are intertwined her racial memories, her hopes and fears, her songs of triumph, her victories and her defeats. She has been a symbol of India's age-long culture and civilization, ever-changing, ever-flowing, and yet ever

1026-509: A sacred river to Hindus along every fragment of its length. All along its course, Hindus bathe in its waters, paying homage to their ancestors and their gods by cupping the water in their hands, lifting it, and letting it fall back into the river; they offer flowers and rose petals and float shallow clay dishes filled with oil and lit with wicks (diyas). On the journey back home from the Ganges, they carry small quantities of river water with them for use in rituals; Ganga Jal, literally "the water of

1140-435: A sage, Kapila , whose intense meditation has been disturbed by the sixty thousand sons of King Sagara . Livid at being disturbed, Kapila sears them with his angry gaze, reduces them to ashes, and dispatches them to the netherworld. Only the waters of the Ganges, then in heaven, can bring the dead sons their salvation. A descendant of these sons, King Bhagiratha , anxious to restore his ancestors, undertakes rigorous penance and

1254-418: A serious urgency by India and Myanmar into a territorial dispute. Disputes over rights of some oil and gas blocks have caused brief diplomatic spats between Myanmar and India with Bangladesh. The disputed maritime boundary between Bangladesh and Myanmar resulted in military tensions in 2008 and 2009. The maritime dispute between Bangladesh and Myanmar settled in 2012 through the judgement of ITLOS. In 2014,

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1368-562: Is 625 km (388 mi) long, with a drainage basin of 25,820 km (9,970 sq mi). The Hooghly River empties into the Bay of Bengal near Sagar Island . Between Malda and the Bay of Bengal, the Hooghly river passes the towns and cities of Murshidabad , Nabadwip , Kolkata and Howrah . After entering Bangladesh, the main branch of the Ganges river is known as the Padma . The Padma

1482-593: Is a trans-boundary river of Asia which flows through India and Bangladesh . The 2,525 km (1,569 mi)-long river rises in the western Himalayas in the Indian state of Uttarakhand . It flows south and east through the Gangetic plain of North India , receiving the right-bank tributary, the Yamuna , which also rises in the western Indian Himalayas, and several left-bank tributaries from Nepal that account for

1596-554: Is a 14 km-wide deep sea canyon of the Bay of Bengal. The deepest recorded area of this valley is about 1340 m. The submarine canyon is part of the Bengal Fan , the largest submarine fan in the world. Submarine fan is also known as abyssal fan . Bay of Bengal fan, known as Bengal Fan , also known as the Ganges Fan is world's largest abyssal fan, also known as deep-sea fans, underwater deltas, and submarine fans. The fan

1710-892: Is a mangrove forest in the southern part of the Ganges-Brahmaputra Delta which lies in the Indian state of West Bengal and in Bangladesh. The Brahmaputra at 2,948 km (1,832 mi) is the 15th longest River in the world. It originates in Tibet . The Hooghly River , another channel of the Ganga that flows through Kolkata drains into Bay of Bengal at Sagar in West Bengal, India. The Ganga–Brahmaputra-Barak rivers deposit nearly 1000 million tons of sediment every year. The sediment from these three rivers form

1824-463: Is a new venture proposed which would create a channel for a shipping route to link the Gulf of Mannar with the Bay of Bengal. This would connect India from east to west without the necessity of going around Sri Lanka. Thoni and catamaran fishing boats of fishing villages thrive along the Bay of Bengal shorelines. Fishermen can catch between 26 and 44 species of marine fish. In one year, the average catch

1938-742: Is about 1,080,000 km (420,000 sq mi), of which 861,000 km (332,000 sq mi) is in India (about 80%), 140,000 km (54,000 sq mi) in Nepal (13%), 46,000 km (18,000 sq mi) in Bangladesh (4%), and 33,000 km (13,000 sq mi) in China (3%). Sometimes the Ganges and Brahmaputra–Meghna drainage basins are combined for a total of about 1,600,000 km (620,000 sq mi) or 1,621,000 km (626,000 sq mi). The combined Ganges-Brahmaputra-Meghna basin (abbreviated GBM or GMB) drainage basin

2052-497: Is about 3,000 km (1,900 mi) long, 1,430 km (890 mi) wide with a maximum thickness of 16.5 km (10.3 mi). The fan resulted from the uplift and erosion of the Himalayas and the Tibetan Plateau produced by the collision between the Indian Plate and the Eurasian Plate . Most of the sediment is supplied by the Ganges and Brahmaputra rivers which supply the Lower Meghna delta in Bangladesh and

2166-741: Is different ways to determine the river's length, its discharge , and the size of its drainage basin . The name Ganges is used for the river between the confluence of the Bhagirathi and Alaknanda rivers, in the Himalayas, and the first bifurcation of the river, near the Farakka Barrage and the India-Bangladesh Border. The length of the Ganges is frequently said to be slightly over 2,600 km (1,600 mi) long, about 2,601 km (1,616 mi), 2,525 km (1,569 mi) or 2,650 km (1,650 mi). In these cases

2280-476: Is eventually granted the prize of Ganges's descent from heaven. However, since her turbulent force would also shatter the earth, Bhagiratha persuades Shiva in his abode on Mount Kailash to receive the Ganges in the coils of his tangled hair and break her fall. The Ganges descends, is tamed in Shiva's locks, and arrives in the Himalayas. She is then led by the waiting Bhagiratha down into the plains at Haridwar, across

2394-555: Is home to approximately 140 species of fish, 90 species of amphibians , and also reptiles and mammals , including critically endangered species such as the gharial and South Asian river dolphin . The Ganges is the most sacred river to Hindus . It is worshipped as the goddess Ganga in Hinduism . The Ganges is threatened by severe pollution . This not only poses a danger to humans but also to many species of animals. The levels of fecal coliform bacteria from human waste in

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2508-783: Is joined by the Jamuna River , the largest distributary of the Brahmaputra . Further downstream, the Padma joins the Meghna River , the converged flow of Surma-Meghna River System taking on the Meghna's name as it enters the Meghna Estuary, which empties into the Bay of Bengal. Here it forms the 1,430 by 3,000 km (890 by 1,860 mi) Bengal Fan , the world's largest submarine fan , which alone accounts for 10–20% of

2622-522: Is longer than its main outlet via the Meghna River, resulting in a total length of about 2,704 km (1,680 mi), if taken from the source of the Bhagirathi, or 2,321.50 km (1,442.51 mi), if from Haridwar to the Hooghly's mouth. In other cases the length is said to be about 2,304 km (1,432 mi), from the source of the Bhagirathi to the Bangladesh border, where its name changes to Padma . For similar reasons, sources differ over

2736-776: Is one of the World's 64 largest marine ecosystems . Kerilia jerdonii is a sea snake of the Bay of Bengal. Glory of Bengal cone ( Conus bengalensis ) is just one of the seashells which can be photographed along beaches of the Bay of Bengal. An endangered species , the olive ridley sea turtle can survive because of the nesting grounds made available at the Gahirmatha Marine Wildlife Sanctuary, Gahirmatha Beach , Odisha , India. Marlin , barracuda , skipjack tuna, ( Katsuwonus pelamis ) , yellowfin tuna , Indo-Pacific humpbacked dolphin ( Sousa chinensis ) , and Bryde's whale ( Balaenoptera edeni ) are

2850-836: Is spread across Bangladesh, Bhutan , India, Nepal, and China. The Ganges basin ranges from the Himalaya and the Transhimalaya in the north, to the northern slopes of the Vindhya range in the south, from the eastern slopes of the Aravalli in the west to the Chota Nagpur plateau and the Sunderbans delta in the east. A significant portion of the discharge from the Ganges comes from the Himalayan mountain system. Within

2964-403: Is the high point of the Ganges basin. The other peaks over 8,000m in the basin are Kangchenjunga , Lhotse , Makalu , Cho Oyu , Dhaulagiri , Manaslu , Annapurna and Shishapangma . The Himalayan portion of the basin includes the south-eastern portion of the state of Himachal Pradesh, the entire state of Uttarakhand, the entire country of Nepal and the extreme north-western portion of

3078-572: Is the northeastern part of the Indian Ocean . The world's largest bay , geographically it is positioned between the Indian subcontinent and the Indochinese peninsula , located below the Bengal region . Many South Asian and Southeast Asian countries are dependent on the Bay of Bengal . Geopolitically, the bay is bounded on the west and northwest by India, on the north by Bangladesh, and on

3192-425: Is the study of how ancient peoples interacted with the sea and waterways. A specialized branch, archaeology of shipwrecks , studies the salvaged artifacts of ancient ships. Stone anchors, amphorae shards, elephant tusks, hippopotamus teeth, ceramic pottery, a rare wood mast and lead ingots are examples which may survive submerged for centuries for archaeologists to discover, study, and place their salvaged findings into

3306-650: Is two million tons of fish from the Bay of Bengal alone. Approximately 31% of the world's coastal fishermen live and work on the bay. The Bay of Bengal is centrally located in South and Southeast Asia. It lies at the center of two huge economic blocks, the SAARC and ASEAN . It influences China's southern landlocked region in the north and major sea ports of Bangladesh and India. China, India, and Bangladesh have forged naval cooperation agreements with Malaysia, Thailand, and Indonesia to increase cooperation in checking terrorism in

3420-576: Is used in Hindu ritual and is therefore present in all sacred waters. Despite this, nothing is more stirring for a Hindu than a dip in the actual river, which is thought to remit sins, especially at one of the famous tirthas such as Varanasi , Gangotri , Haridwar , or the Triveni Sangam at Prayagraj . The symbolic and religious importance of the Ganges is one of the few things that Hindus, even their skeptics, have agreed upon. Jawaharlal Nehru,

3534-593: The Andaman Sea , sediment from the river is found in the eastern Bay of Bengal. Indian ports on the bay include Paradip Port , Kolkata Port , Haldia Port , Chennai Port , Visakhapatnam Port , Kakinada Port , Pondicherry Port , Dhamra Port , and Gopalpur-on-Sea . Bangladeshi ports on the Bay are Chittagong , Mongla , Payra Port . Sri Lankan ports include Jaffna , Kankesanthurai , Batticaloa , and Trincomalee . Myanmar's main sea port includes Akyab (Sittwe). In alphabetical order The lithosphere of

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3648-979: The Bay of Bengal . The Ganges–Brahmaputra–Meghna system is the second-largest river on earth by discharge . The main stem of the Ganges begins at the town of Devprayag , at the confluence of the Alaknanda , which is the source stream in hydrology on account of its greater length, and the Bhagirathi , which is considered the source stream in Hindu mythology . The Ganges is a lifeline to tens of millions of people who live in its basin and depend on it for their daily needs. It has been important historically, with many former provincial or imperial capitals such as Pataliputra , Kannauj , Sonargaon , Dhaka , Bikrampur , Kara , Munger , Kashi , Patna , Hajipur , Kanpur , Delhi , Bhagalpur , Murshidabad , Baharampur , Kampilya , and Kolkata located on its banks or those of its tributaries and connected waterways. The river

3762-741: The British East India Company . Gopalpur-on-Sea was one of their main trading centers. Other trading companies along the Bay of Bengal shorelines were the English East India Company and the French East India Company . BIMSTEC (Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation) supports free trade internationally around the Bay of Bengal between Bangladesh, Bhutan , India, Myanmar, Nepal , Sri Lanka, and Thailand . The Sethusamudram Shipping Canal Project

3876-680: The Hooghly River . Just before the border with Bangladesh the Farakka Barrage controls the flow of Ganges, diverting some of the water into a feeder canal linked to the Hooghly for the purpose of keeping it relatively silt-free. The Hooghly River is formed by the confluence of the Bhagirathi River and Ajay River at Katwa , and Hooghly has a number of tributaries of its own. The largest is the Damodar River , which

3990-533: The Hoogly delta in West Bengal (India). Several other large rivers in Bangladesh and India provide smaller contributions. Turbidity currents have transported the sediment through a series of submarine canyons , some of which are more than 2,400 kilometres (1,500 mi) in length, to be deposited in the Bay of Bengal up to 30 degrees latitude from where it began. To date, the oldest sediments recovered from

4104-718: The Indo-Gangetic Plain . The Indo-Gangetic Plain is geologically known as a foredeep or foreland basin . Major left-bank tributaries include the Gomti River, Ghaghara River, Gandaki River and Kosi River; major right-bank tributaries include the Yamuna River, Son River, Punpun and Damodar. The hydrology of the Ganges River is very complicated, especially in the Ganges Delta region. One result

4218-476: The Irrawaddy dolphins ( Orcaella brevirostris ) can be found. The Great Nicobar Biosphere Reserve provides sanctuary to many animals some of which include the saltwater crocodile ( Crocodylus porosus ) , giant leatherback sea turtle ( Dermochelys coriacea ) , and Malayan box turtle ( Cuora amboinensis kamaroma ) to name a few. Another endangered species royal Bengal tiger is supported by Sundarbans

4332-514: The Kaimur Range and contributes an average flow of about 187 m /s (6,600 cu ft/s). After the Tamsa, the 625 km (388 mi) long Gomti River joins, flowing south from the Himalayas. The Gomti contributes an average annual flow of about 234 m /s (8,300 cu ft/s). Then the 1,156 km (718 mi) long Ghaghara River (Karnali River), also flowing south from

4446-610: The Mahabharata , in one of its popular ślokas , says, "If only (one) bone of a (deceased) person should touch the water of the Ganges, that person shall dwell honoured in heaven." As if to illustrate this truism, the Kashi Khanda (Varanasi Chapter) of the Skanda Purana recounts the remarkable story of Vahika , a profligate and unrepentant sinner, who is killed by a tiger in the forest. His soul arrives before Yama ,

4560-464: The Shraddha rites. Hindus also perform pinda pradana , a rite for the dead, in which balls of rice and sesame seed are offered to the Ganges while the names of the deceased relatives are recited. Every sesame seed in every ball thus offered, according to one story, assures a thousand years of heavenly salvation for each relative. Indeed, the Ganges is so important in the rituals after death that

4674-598: The Vishnupadi , which until now had been circling the cosmic egg. Flowing out of the vault, she plummets down to Indra's heaven, where she is received by Dhruva , once a steadfast worshipper of Vishnu, now fixed in the sky as the Pole star . Next, she streams across the sky forming the Milky Way and arrives on the moon. She then flows down earthwards to Brahma 's realm, a divine lotus atop Mount Meru , whose petals form

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4788-434: The gems of Sri Lanka . Garnet and other precious gems are also found in abundance in the Indian states of Odisha and Andhra Pradesh . A 2014 study found that as a result of ocean acidification, there was reduced shell thickness of marine animals and breaking strength compared to normal shells. The study also showed that the pH in Bay of Bengal fell to 7.75 compared in 1994 when it averaged 7.95. From January to October,

4902-582: The historical Bengal region (modern-day Bangladesh and the Indian states of West Bengal , Tripura and the Barak valley of Southern Assam ). In Ancient Indian scriptures , this water body may have been referred to as Mahodadhi ( Sanskrit : महोदधि, lit.   ' Great water receptacle ' ). Ancient Romans called it Sinus Gangeticus or Gangeticus Sinus whilst Ancient Greeks called it in Ancient Greek : Κόλπος Γαγγητικός , meaning "Gulf of

5016-637: The sacred sea . The daily practise includes prayer and fire offering to the sea at Swargadwar in Puri by disciples of the Govardhana matha of the Shankaracharya. On Paush Purnima of every year the Shankaracharya himself comes out to offer prayers to the sea. The islands in the bay are numerous, including the Andaman Islands and Nicobar Islands of India. The Cheduba group of islands, in

5130-488: The 729 km (453 mi) long Kosi River , join from the north flowing from Nepal, contributing about 1,654 m /s (58,400 cu ft/s) and 2,166 m /s (76,500 cu ft/s), respectively. The Kosi is the third largest tributary of the Ganges by discharge, after Ghaghara (Karnali) and Yamuna. The Kosi merges into the Ganges near Kursela in Bihar . Along the way between Prayagraj and Malda , West Bengal ,

5244-743: The Alaknanda, Dhauliganga , Nandakini , Pindar , Mandakini and Bhagirathi. Their confluences, known as the Panch Prayag , are all along the Alaknanda. They are, in downstream order, Vishnuprayag , where the Dhauliganga joins the Alaknanda; Nandprayag , where the Nandakini joins; Karnaprayag , where the Pindar joins; Rudraprayag , where the Mandakini joins; and finally, Devprayag, where

5358-411: The Bay of Bengal was also called the Chola Sea or Chola Lake. The Kakatiya dynasty reached the western coastline of the Bay of Bengal between the Godavari and the Krishna rivers. Kushanas about the middle of the 1st century AD invaded northern India perhaps extending as far as the Bay of Bengal. Chandragupta Maurya extended the Maurya Dynasty across northern India to the Bay of Bengal. Hajipur

5472-471: The Bay of Bengal. The Ganga is the northernmost of these rivers. Its main channel enters and flows through Bangladesh, where it is known as the Padma River , before joining the Meghna River . However, the Brahmaputra River flows from east to west in Assam before turning south and entering Bangladesh where it is called the Jamuna River . This joins the Padma where upon the Padma joins the Meghna River that finally drains into Bay of Bengal. The Sundarbans

5586-463: The Bay of Bengal: the Ganges – Hooghly , the Padma , the Brahmaputra – Jamuna , the Barak – Surma – Meghna , the Irrawaddy , the Godavari , the Mahanadi , the Brahmani , the Baitarani , the Krishna , and the Kaveri . The International Hydrographic Organization defines the limits of the Bay of Bengal as follows: Note: Oedjong means " cape " in Dutch language on maps of the Netherlands East Indies (Indonesia). The bay gets its name from

5700-443: The Bengal Delta and the submarine fan , a vast structure that extends from Bengal to south of the Equator, is up to 16.5 kilometres (10.3 mi) thick, and contains at least 1,130 trillion tonnes of sediment, which has accumulated over the last 17 million years at an average rate of 665 million tons per annum. The fan has buried organic carbon at a rate of nearly 1.1 trillion mol/yr (13.2 million t/yr) since

5814-435: The Bengal fan are from Early Miocene age. Their mineralogical and geochemical characteristics allow to identify their Himalayan origin and demonstrate that the Himalaya was already a major mountain range 20 million years ago. The fan completely covers the floor of the Bay of Bengal. It is bordered to the west by the continental slope of eastern India, to the north by the continental slope of Bangladesh and to east by

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5928-422: The Bhagirathi joins the Alaknanda to form the Ganges. After flowing for 256.90 km (159.63 mi) through its narrow Himalayan valley, the Ganges emerges from the mountains at Rishikesh , then debouches onto the Gangetic Plain at the pilgrimage town of Haridwar . At Haridwar, a headworks diverts some of its water into the Ganges Canal , which irrigates the Doab region of Uttar Pradesh , whereas

6042-416: The Brahmaputra, and the Surma-Meghna river system. In full flood only the Amazon is larger. The Indian subcontinent lies atop the Indian tectonic plate , a minor plate within the Indo-Australian Plate . Its defining geological processes commenced seventy-five million years ago, when, as a part of the southern supercontinent Gondwana , it began a northeastwards drift —lasting fifty million years—across

6156-410: The East Indian Winter Jet. September and December see very active weather, season varsha (or monsoon), in the Bay of Bengal producing severe cyclones which affect eastern India. Several efforts have been initiated to cope with storm surge . The Bay of Bengal is full of biological diversity, diverging amongst coral reefs , estuaries , fish spawning and nursery areas, and mangroves . The Bay of Bengal

6270-431: The Ganges flow at Farakka was less than 2,000 m /s (71,000 cu ft/s) then India and Bangladesh would each receive 50% of the water, with each receiving at least 1,000 m /s (35,000 cu ft/s) for alternating ten-day periods. However, within a year the flow at Farakka fell to levels far below the historic average, making it impossible to implement the guaranteed sharing of water. In March 1997, flow of

6384-401: The Ganges in Bangladesh dropped to its lowest ever, 180 m /s (6,400 cu ft/s). Dry season flows returned to normal levels in the years following, but efforts were made to address the problem. One plan is for another barrage to be built in Bangladesh at Pangsha , west of Dhaka . This barrage would help Bangladesh better utilize its share of the waters of the Ganges. The Ganges is

6498-478: The Ganges river passes the towns of Chunar , Mirzapur , Varanasi , Ghazipur , Ara , Patna , Chapra , Hajipur , Mokama , Begusarai , Munger , Sahibganj , Rajmahal , Bhagalpur , Ballia , Buxar , Simaria , Sultanganj , and Farakka . At Bhagalpur, the river begins to flow south-southeast and at Farakka, it begins its attrition with the branching away of its first distributary , the 408 km (254 mi) long Bhāgirathi-Hooghly , which goes on to become

6612-414: The Ganges", and old European maps continued to use this name. The other Sanskrit names for Bay of Bengal are Vaṅgopasāgara (Sanskrit: वङ्गोपसागर, lit.   ' Bengal Sub-sea or Bengal Bay ' ), Vaṅgasāgara (Sanskrit: वङ्गसागर, lit.   ' Bengal Sea ' ), Pūrvapayodhi (Sanskrit: पूर्वपयोधि, lit.   ' Eastern Ocean ' ). In ancient Classical India , the Bay of Bengal

6726-424: The Ganges". The Ganges is the embodiment of all sacred waters in Hindu mythology . Local rivers are said to be like the Ganges and are sometimes called the local Ganges. The Godavari River of Maharashtra in Western India is called the Ganges of the South or the 'Dakshin Ganga'; the Godavari is the Ganges that was led by the sage Gautama to flow through Central India. The Ganges is invoked whenever water

6840-444: The Ganges, Brahmaputra, and Meghna are given separately, at about 16,650 m /s (588,000 cu ft/s) for the Ganges, about 19,820 m /s (700,000 cu ft/s) for the Brahmaputra, and about 5,100 m /s (180,000 cu ft/s) for the Meghna. The maximum peak discharge of the Ganges, as recorded at Hardinge Bridge in Bangladesh, exceeded 70,000 m /s (2,500,000 cu ft/s). The minimum recorded at

6954-426: The Ganges, and are granted instant salvation. If the death has occurred elsewhere, salvation can be achieved by immersing the ashes in the Ganges. If the ashes have been immersed in another body of water, a relative can still gain salvation for the deceased by journeying to the Ganges, if possible during the lunar "fortnight of the ancestors" in the Hindu calendar month of Ashwin (September or October), and performing

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7068-413: The Himalaya, the Ganges basin spreads almost 1,200 km from the Yamuna-Satluj divide along the Simla ridge forming the boundary with the Indus basin in the west to the Singalila Ridge along the Nepal-Sikkim border forming the boundary with the Brahmaputra basin in the east. This section of the Himalaya contains 9 of the 14 highest peaks in the world over 8,000m in height, including Mount Everest which

7182-446: The Himalayas of Tibet through Nepal joins. The Ghaghara (Karnali), with its average annual flow of about 2,991 m /s (105,600 cu ft/s), is the largest tributary of the Ganges by discharge. After the Ghaghara confluence, the Ganges is joined from the south by the 784 km (487 mi) long Son River , which contributes about 1,008 m /s (35,600 cu ft/s). The 814 km (506 mi) long Gandaki River , then

7296-408: The Hindu tradition, she is also considered the vehicle of ascent , from earth to heaven. As the Triloka-patha-gamini , (Sanskrit: triloka = "three worlds", patha = "road", gamini = "one who travels") of the tradition, she flows in heaven , earth , and the netherworld , and, consequently, is a "tirtha" or crossing point of all beings, the living as well as the dead. It is for this reason that

7410-432: The Lord of Death, to be judged for the afterworld. Having no compensating virtue, Vahika's soul is at once dispatched to hell . While this is happening, his body on earth, however, is being picked at by vultures, one of whom flies away with a foot bone. Another bird comes after the vulture, and in fighting him off, the vulture accidentally drops the bone into the Ganges below. Blessed by this event, Vahika, on his way to hell,

7524-429: The Lower Meghna delta in Bangladesh and the Hoogly delta in West Bengal (India). Several other large rivers in Bangladesh and India provide smaller contributions. Turbidity currents have transported the sediment through a series of submarine canyons , some of which are more than 1,500 miles (2,414 km) in length, to be deposited in the Bay of Bengal up to 30 degrees latitude from where it began. To date,

7638-429: The bulk of its flow. In West Bengal state, India, a feeder canal taking off from its right bank diverts 50% of its flow southwards, artificially connecting it to the Hooghly River . The Ganges continues into Bangladesh, its name changing to the Padma . It is then joined by the Jamuna , the lower stream of the Brahmaputra , and eventually the Meghna , forming the major estuary of the Ganges Delta , and emptying into

7752-434: The continental slope of Bangladesh and to east by the northern part of Sunda Trench off Myanmar and the Andaman Islands , the accretionary wedge associated with subduction of the Indo-Australian Plate beneath the Sunda Plate and continues along the west side of the Ninety East Ridge . The Nicobar Fan, another lobe of the fan, lies east of the Ninety East Ridge. The fan was first identified by bathymetric survey in

7866-408: The current is northward flowing, and the clockwise circulation pattern is called the "East Indian Current". The Bay of Bengal monsoon moves in a northwest direction striking the Nicobar Islands, and the Andaman Islands first end of May, then coast of Mainland India by end of June. The remainder of the year, the counterclockwise current is southwestward flowing, and the circulation pattern is called

7980-426: The dispute between India and Bangladesh was also settled in which the UN tribunal awarded Bangladesh 19,467 km of the 25,602 km sea area of the Bay of Bengal. The Bay of Bengal in the stretch of Swargadwar , the gateway to heaven in Sanskrit , in the Indian town of Puri is considered holy by Hindus . The Samudra arati is a daily tradition started by the present Shankaracharya of Puri 9 years ago to honour

8094-431: The early Miocene period. The three rivers currently contribute nearly 8% of the total organic carbon (TOC) deposited in the world's oceans. Due to high TOC accumulation in the deep sea bed of the Bay of Bengal, the area is rich in oil and natural gas and gas hydrate reserves. Bangladesh can reclaim land substantially and economically gain from the sea area by constructing sea dikes , bunds, causeways and by trapping

8208-726: The earth is broken up into what are called tectonic plates . Underneath the Bay of Bengal, which is part of the great Indo-Australian Plate and is slowly moving north east. This plate meets the Burma Microplate at the Sunda Trench . The Nicobar Islands and the Andaman Islands are part of the Burma Microplate. The India Plate subducts beneath the Burma Plate at the Sunda Trench or Java Trench. Here,

8322-519: The earthly continents. There, the divine waters break up, with one stream, the Bhagirathi, flowing down one petal into Bharatavarsha (India) as the Ganges. It is Shiva , however, among the major deities of the Hindu pantheon, who appears in the most widely known version of the avatarana story. Told and retold in the Ramayana , the Mahabharata and several Puranas , the story begins with

8436-547: The east by Myanmar and the Andaman and Nicobar Islands of India. Its southern limit is a line between Sangaman Kanda , Sri Lanka, and the northwesternmost point of Sumatra , Indonesia. Cox's Bazar , the longest sea beach in the world and Sundarbans , the largest mangrove forest and the natural habitat of the Bengal tiger , are located along the bay. The Bay of Bengal occupies an area of 2,600,000 square kilometres (1,000,000 sq mi). A number of large rivers flow into

8550-628: The end of the 18th century, the course of the lower Brahmaputra changed dramatically, significantly altering its relationship with the Ganges. In 1787 there was a great flood on the Teesta River , which at the time was a tributary of the Ganges-Padma River. The flood of 1787 caused the Teesta to undergo a sudden change course, an avulsion , shifting east to join the Brahmaputra and causing the Brahmaputra to shift its course south, cutting

8664-457: The foot of Gangotri Glacier at Gomukh , at an elevation of 4,356 m (14,291 ft) and was mythologically referred to as residing in the matted locks of Shiva ; symbolically Tapovan, which is a meadow of ethereal beauty at the feet of Mount Shivling, just 5 km (3.1 mi) away. Although many small streams comprise the headwaters of the Ganges, the six longest and their five confluences are considered sacred. The six headstreams are

8778-459: The global burial of organic carbon . The Ganges Delta , formed mainly by the large, sediment-laden flows of the Ganges and Brahmaputra rivers, is the world's largest delta, at about 64,000 km (25,000 sq mi). It stretches 400 km (250 mi) along the Bay of Bengal . Only the Amazon and Congo rivers have a greater average discharge than the combined flow of the Ganges,

8892-658: The health of the Bay, that they can work on together. With the support of the Bay Of Bengal Large Marine Ecosystem Project (BOBLME), the eight countries are now (2012) developing responses to these issues and their causes, for future implementation as the Strategic Action Programme. Fisheries production in the Bay of Bengal is six million tonnes per year, more than seven percent of the world's catch. The major transboundary issues relating to shared fisheries are:

9006-601: The high seas. The Bay of Bengal's connection of South Asia to East Asia has aided in Bangladesh's efficiency of distributing natural gas to the Asia Pacific. Its outlying islands (the Andaman and Nicobar Islands) and, most importantly, major ports such as Chittagong , Mongla , Payra , Paradip , Kolkata , Chennai , Visakhapatnam , and Tuticorin , along its coast with the Bay of Bengal added to its importance. China has recently made efforts to project influence into

9120-458: The island of Sri Lanka and the Coromandel coast to the head of the bay, and thence southwards through a strip embracing the Andaman and Nicobar islands, is bounded by the 100 fathom line of sea bottom; some 50 m. beyond this lies the 500-fathom limit. Opposite the mouth of the Ganges, however, the intervals between these depths are very much extended by deltaic influence. Swatch of No Ground

9234-400: The largest of which merge with other large rivers before themselves joining the Bay of Bengal. But this current channel pattern was not always the case. Over time the rivers in Ganges Delta have often changed course , sometimes altering the network of channels in significant ways. Before the late 12th century the Bhagirathi-Hooghly distributary was the main channel of the Ganges and the Padma

9348-423: The locality of Langalbandh , is still considered sacred by Hindus. Near the confluence is a major early historic site called Wari-Bateshwar . In the rainy season of 1809, the lower channel of the Bhagirathi, leading to Kolkata, had been entirely shut; but in the following year it opened again and was nearly of the same size as the upper channel but both however suffered a considerable diminution, owing probably to

9462-476: The main flow of the Ganges to shift to the southeast and the Padma River. By the end of the 18th century, the Padma had become the main distributary of the Ganges. One result of this shift to the Padma was that the Ganges now joined the Meghna and Brahmaputra rivers before emptying into the Bay of Bengal. The present confluence of the Ganges and Meghna was formed very recently, about 150 years ago. Also near

9576-514: The mountains which stretch along the northern frontier, traverse the level country, and not a few of these, after uniting with each other, fall into the river called the Ganges. Now this river, which at its source is 30  stadia broad, flows from north to south, and empties its waters into the ocean forming the eastern boundary of the Gangaridai , a nation which possesses a vast force of the largest-sized elephants." (Diodorus II.37). In 1951

9690-458: The nectar of the gods which then plunges to the earth and waters it with sustenance. In the Vaishnava version of the myth, the heavenly waters were then a river called Vishnupadi ( Sanskrit : "from the foot of Vishnu"). As Vishnu as the avatar Vamana completes his celebrated three strides —of earth, sky, and heaven— he stubs his toe on the vault of heaven, punches open a hole and releases

9804-518: The new communication opened below the Jalanggi on the upper channel. Discharge of the Ganges River at Farakka Barrage (period from 1998/01/01 to 2023/12/31): The first European traveller to mention the Ganges was the Greek envoy Megasthenes (ca. 350–290 BCE). He did so several times in his work Indica : "India, again, possesses many rivers both large and navigable, which, having their sources in

9918-564: The north-east, off the Burmese coast, are remarkable for a chain of mud volcanoes, which are occasionally active. Great Andaman is the main archipelago or island group of the Andaman Islands, whereas Ritchie's Archipelago consists of smaller islands. Only 37, or 6.5%, of the 572 islands and islets of the Andaman and Nicobar Islands are inhabited. Many major rivers of India and Bangladesh flow west to east before draining into

10032-669: The northern part of Sunda Trench off Myanmar and the Andaman Islands , the accretionary wedge associated with subduction of the Indo-Australian Plate beneath the Sunda Plate and continues along the west side of the Ninety East Ridge . The Nicobar Fan, another lobe of the fan, lies east of the Ninety East Ridge. The fan is now being explored as a possible source of fossil fuels for

10146-510: The oldest sediments recovered from the Bengal fan are from Early Miocene age. Their mineralogical and geochemical characteristics confirm their Himalayan origin and demonstrate that the Himalaya was already a major mountain range 20 million years ago. The fan completely covers the floor of the Bay of Bengal. It is bordered to the west by the continental slope of eastern India, to the north by

10260-479: The plains first to the confluence with the Yamuna at Prayag and then to Varanasi, and eventually to Ganges Sagar (Ganges delta), where she meets the ocean, sinks to the netherworld, and saves the sons of Sagara. In honour of Bhagirath's pivotal role in the avatarana , the source stream of the Ganges in the Himalayas is named Bhagirathi, (Sanskrit, "of Bhagiratha"). As the Ganges had descended from heaven to earth in

10374-517: The pressure of the two plates on each other increase pressure and temperature resulting in the formation of volcanoes such as the volcanoes in Myanmar , and a volcanic arc called the Sunda Arc . The Sumatra-Andaman earthquake and Asian tsunami was a result of the pressure at this zone causing a submarine earthquake which then resulted in a destructive tsunami. A zone 50 m wide extending from

10488-493: The region through tie-ups with Myanmar and Bangladesh. The United States has held major exercises with Bangladesh, Malaysia, Singapore, Thailand and recently India. The largest ever wargame in Bay of Bengal, known as Malabar 2007, was held in 2007 and naval warships from the United States, India, Singapore, Japan and Australia took part. Large deposits of natural gas in the areas within Bangladesh's sea zone incited

10602-444: The region. The seasonality of flow is so acute it can cause both drought and floods . Bangladesh, in particular, frequently experiences drought during the dry season and regularly suffers extreme floods during the monsoon. In the Ganges Delta, many large rivers come together, both merging and bifurcating in a complicated network of channels . The two largest rivers, the Ganges and Brahmaputra, both split into distributary channels,

10716-583: The river Ganges begins at the confluence of the Bhagirathi and Alaknanda rivers in the town of Devprayag in the Garhwal division of the Indian state of Uttarakhand. The Bhagirathi is considered to be the source in Hindu culture and mythology, although the Alaknanda is longer, and therefore, hydrologically the source stream. The headwaters of the Alakananda are formed by snow melt from peaks such as Nanda Devi , Trisul , and Kamet . The Bhagirathi rises at

10830-409: The river near Varanasi are more than 100 times the Indian government's official limit. The Ganga Action Plan , an environmental initiative to clean up the river, has been considered a failure which is variously attributed to corruption , a lack of will in the government, poor technical expertise, poor environmental planning , and a lack of support from religious authorities. The upper phase of

10944-478: The river's source is usually assumed to be the source of the Bhagirathi River, Gangotri Glacier at Gomukh and its mouth being the mouth of the Meghna River on the Bay of Bengal. Sometimes the source of the Ganges is considered to be at Haridwar, where its Himalayan headwater streams debouch onto the Gangetic Plain. In some cases, the length of the Ganges is given by its Hooghly River distributary, which

11058-567: The river, however, can achieve the same results by bathing in any nearby body of water, which, for the true believer, takes on all the attributes of the Ganges. The karunasiri is an old theme in Hinduism with a number of different versions of the story. In the Vedic version, Indra , the Lord of Svarga ( Heaven ) slays the celestial serpent, Vritra , releasing the celestial liquid, soma , or

11172-477: The river, whose course has been roughly southwest until this point, now begins to flow southeast through the plains of northern India. The Ganges river follows a 900 km (560 mi) arching course passing through the cities of Bijnor , Kannauj, Farukhabad , and Kanpur . Along the way it is joined by the Ramganga , which contributes an average annual flow of about 495 m /s (17,500 cu ft/s) to

11286-490: The river. The Ganges joins the 1,444 km (897 mi) long River Yamuna at the Triveni Sangam at Prayagraj (previously Allahabad), a confluence considered holy in Hinduism. At their confluence the Yamuna is larger than the Ganges contributing about 58.5% of the combined flow, with an average flow of 2,948 m /s (104,100 cu ft/s). Now flowing east, the river meets the 400 km (250 mi) long Tamsa River (also called Tons ), which flows north from

11400-554: The same Ganga." In late May or early June every year, Hindus celebrate the karunasiri and the rise of the Ganges from earth to heaven. The day of the celebration, Ganga Dashahara , the Dashami (tenth day) of the waxing moon of the Hindu calendar month Jyeshtha , brings throngs of bathers to the banks of the river. A dip in the Ganges on this day is said to rid the bather of ten sins (dasha = Sanskrit "ten"; hara = to destroy) or ten lifetimes of sins. Those who cannot journey to

11514-559: The same place was about 180 m /s (6,400 cu ft/s), in 1997. The hydrologic cycle in the Ganges basin is governed by the Southwest Monsoon . About 84% of the total rainfall occurs in the monsoon from June to September. Consequently, streamflow in the Ganges is highly seasonal. The average dry season to monsoon discharge ratio is about 1:6, as measured at Hardinge Bridge . This strong seasonal variation underlies many problems of land and water resource development in

11628-625: The sediment from its rivers. Further southwest of Bengal , the Mahanadi , Godavari , Krishna and Kaveri Rivers also flow from west to east across Deccan Plateau in Peninsular India and drain into the Bay of Bengal forming deltas . Many small rivers also drain directly into the Bay of Bengal forming estuaries ; the shortest of them is the Cooum River at 64 km (40 mi). While Myanmar's Irrawaddy River flows into

11742-669: The sixties by Bruce C. Heezen and Marie Tharp which identified the abyssal cone and canyon structures. It was delineated and named by Joseph Curray and David Moore following a geological and geophysical survey in 1968. A deep sea canyon called Swatch of No Ground (SoNG) is located south of Sundarbans National Park and the island of Dublar Char . This area hosts important habitats for cetaceans including endangered species such as various species of dolphins and Bryde's whales (see Swatch of No Ground Marine Protected Area ). 12°N 87°E  /  12°N 87°E  / 12; 87 Bay of Bengal The Bay of Bengal

11856-471: The size of the river's drainage basin. The basin covers parts of four countries, India, Nepal , China , and Bangladesh; eleven Indian states, Himachal Pradesh , Uttarakhand, Uttar Pradesh, Madhya Pradesh, Chhattisgarh , Bihar, Jharkhand , Punjab , Haryana, Rajasthan , West Bengal, and the Union Territory of Delhi . The Ganges basin, including the delta but not the Brahmaputra or Meghna basins,

11970-416: The state of West Bengal. The discharge of the Ganges also differs by source. Frequently, discharge is described for the mouth of the Meghna River, thus combining the Ganges with the Brahmaputra and Meghna. This results in a total average annual discharge of about 38,000 m /s (1,300,000 cu ft/s), or 42,470 m /s (1,500,000 cu ft/s). In other cases the average annual discharges of

12084-404: The story of the avatarana is told at Shraddha ceremonies for the deceased in Hinduism, and Ganges water is used in Vedic rituals after death . Among all hymns devoted to the Ganges, there are none more popular than the ones expressing the worshipper's wish to breathe his last surrounded by her waters. The Gangashtakam expresses this longing fervently: O Mother! ... Necklace adorning

12198-537: The surrounding developing nations . The fan was first identified by bathymetric survey in the sixties by Bruce C. Heezen and Marie Tharp which identified the abyssal cone and canyon structures. It was delineated and named by Joseph Curray and David Moore following a geological and geophysical survey in 1968. Coastal regions bordering the Bay of Bengal are rich in minerals. Sri Lanka, Serendib , or Ratna – Dweepa which means Gem Island. Amethyst , beryl , ruby , sapphire , topaz , and garnet are just some of

12312-487: The then unformed Indian Ocean. The subcontinent's subsequent collision with the Eurasian Plate and subduction under it, gave rise to the Himalayas, the planet's highest mountain ranges. In the former seabed immediately south of the emerging Himalayas, plate movement created a vast trough , which, having gradually been filled with sediment borne by the Indus and its tributaries and the Ganges and its tributaries, now forms

12426-461: The timeline of history. Coral reefs, tsunamis, cyclones, mangrove swamps, battles, and a criss-cross of sea routes in a high trading area combined with piracy have all contributed to shipwrecks in the Bay of Bengal. In chronological order: One of the first trading ventures along the Bay of Bengal was The Company of Merchants of London Trading into the East Indies, more commonly referred to as

12540-541: The worlds! Banner rising to heaven! I ask that I may leave of this body on your banks, Drinking your water, rolling in your waves, Remembering your name, bestowing my gaze upon you. No place along her banks is more longed for at the moment of death by Hindus than Varanasi, the Great Cremation Ground, or Mahashmshana . Those who are lucky enough to die in Varanasi, are cremated on the banks of

12654-402: The worst dry season the Ganges flow would be around 1,400 to 1,600 m /s (49,000 to 57,000 cu ft/s), thus leaving 280 to 420 m /s (9,900 to 14,800 cu ft/s) for the then East Pakistan. East Pakistan objected and a protracted dispute ensued. In 1996 a 30-year treaty was signed with Bangladesh. The terms of the agreement are complicated, but in essence, they state that if

12768-567: Was a stronghold for Portuguese Pirates. In the 16th century, the Portuguese built trading posts in the north of the Bay of Bengal at Chittagong (Porto Grande) and Satgaon (Porto Pequeno). The earliest sign of Muslims in the region came from the textile trade routes where one targeted the east Arabian Sea influencing migration of Arabs and Persians and another to the west causing Buddhist Bengalis to culturally mix with Islam. In alphabetical order: Maritime archaeology or marine archaeology

12882-493: Was most commonly known as Kalinga Sagar ( Kalinga Sea). Another name commonly used mainly in Tamil was Vanga Kadal. Northern Circars occupied the western coast of the Bay of Bengal and is now considered to be India's Odisha and Andhra Pradesh state. Chola dynasty (9th century to 12th century) when ruled by Rajaraja Chola I and Rajendra Chola I occupied and controlled the Bay of Bengal with Chola Navy circa AD 1014 ,

12996-482: Was only a minor spill-channel. The main flow of the river reached the sea not via the modern Hooghly River but rather by the Adi Ganga . Between the 12th and 16th centuries, the Bhagirathi-Hooghly and Padma channels were more or less equally significant. After the 16th century, the Padma grew to become the main channel of the Ganges. It is thought that the Bhagirathi-Hooghly became increasingly choked with silt, causing

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