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Sundarbans and Ganges Delta Sediments, Bangladesh and India – February 28th, 2013

22.0N 89.0E

February 28th, 2013 Category: Wetlands

Bangladesh – February 26th, 2013

The Sundarbans, visible here as a dark green area by the coast, surrounded by sediments, are the largest single block of tidal halophytic mangrove forest in the world. They cover parts of Bangladesh and the Indian state of West Bengal, in the Ganges delta. The Sundarbans comprise a network of 108 swampy, low-lying islands. The region’s low elevation above sea-level and proximity to the coast make it particularly vulnerable to climate change, particularly to an increase in cyclones.

Hoogly River and Sundarbans, Coastal India and Bangladesh – December 4th, 2011

22.3N 88.2E

December 4th, 2011 Category: Image of the day, Rivers, Wetlands

India - November 26th, 2011

Rivers in West Bengal, India and Bangladesh can be observed on the right side of this image, empyting sediments into the Bay of Bengal. Visible near the image center is the wide Hooghly River, a distributary of the Ganges River of approximately 260 kilometres (160 mi) in length.

To the east of the Hooghly River is the Sundarbans, the largest single block of tidal halophytic mangrove forest in the world. The forest lies in the vast delta on the Bay of Bengal formed by the super confluence of the Padma, Brahmaputra and Meghna rivers across southern Bangladesh. The seasonally-flooded Sundarbans freshwater swamp forests lie inland from the mangrove forests on the coastal fringe.

West Bengal, India, from Himalayas to Gangetic Plain

November 18th, 2011 Category: Mountains, Rivers

India - November 9th, 2011

This APM image shows rivers flowing down from the Himalayas in India and Bhutan (upper right), and across the Indian state of West Bengal, into Bangladesh.

As one can see from the contrast in this image, West Bengal encompasses two broad natural regions: the Gangetic Plain in the south and the sub-Himalayan and Himalayan area in the north.

The state has a total area of 88,752 square kilometres (34,267 sq mi). The Darjeeling Himalayan hill region in the northern extreme of the state belongs to the eastern Himalayas.  The narrow Terai region separates this region from the plains, which in turn transitions into the Ganges delta towards the south.

Rivers Near Siliguri, India

26.7N 88.4E

August 2nd, 2011 Category: Mountains, Rivers

Bangladesh and India - July 23rd, 2011

Visible at the foot of the Himalayas is Siliguri, a city in the Indian state of West Bengal near the border with Bangladesh. It is located in the Siliguri Corridor or Chicken’s Neck — a very narrow strip of land linking mainland India to its north eastern states.

Siliguri is situated in the plains at the base of the Himalaya mountains. It is the largest city in North Bengal and the second largest city of West Bengal.  The Mahananda River bifurcates the city. Visible to the east of the city is the wider River Teesta, which forms the border between Sikkim and West Bengal before joining the Brahmaputra as a tributary in Bangladesh. The total length of the river is 315 kilometres (196 mi).

Tropical Cyclone 02B (Aila) Makes Landfall, Causing Floods and Tidal Waves

22.5N 88.3E

May 26th, 2009 Category: Tropical Cyclones

Tropical Cyclone 02B (Aila) - May 26th, 2009

Tropical Cyclone 02B (Aila) - May 26th, 2009

TC 02B color composite © IMD

TC 02B color composite

Tropical Cyclone 02B (Aila), over Sub-Himalayan West Bengal and adjoining parts of Bangladesh, has moved further northward and weakened into a deep depression.

The cyclone made landfall yesterday, slamming into the coastal areas of eastern India and Bangladesh with 110 kph winds, killing at least 17 people and leaving thousands homeless.

Aila, which is currently located approximately 105 nautical miles north of Kolkata (Calcutta), India, has tracked northward at 13 knots over the past six hours.

The system still has a defined low level circulation center with a defined convective band wrapping around the northern periphery into the center.

TC 02B has been moving into an increasingly hostile environment with moderate vertical wind shear and interaction from land during the last 6 hours.

As of this morning it lay centred over Sub-Himalayan West Bengal, about 50 km to the north of Malda. The system is likely to move in a near northerly direction, and continue to gradually lose strength overland as it moves into an increasingly dry environment. It is forecast to weaken into a depression during next six hours.

Under its influence, rainfall at most places is heavy, with some isolated extremely heavy falls greater than 25cm likely over Sub-Himalayan West Bengal and Sikkim, and Assam and Meghalaya for the next 24 hours. In these areas, squall-like wind speeds reaching 50-60kph are also expected during the next 12 hours.

Rain and thundershowers are also likely at many places with isolated heavy falls over Arunachal Pradesh and Nagaland, Manipur, and Mizoram and Tripura during the next 24 hours.

After Aila made landfall, mud embankments in West Bengal burst as heavy rains swelled the rivers, reports CBC news. In Kolkata, West Bengal’s state capital, trees were uprooted and communication lines were brought down. At least 10 people died in West Bengal because of collapsed buildings and fallen trees.

Meanwhile, the storm triggered tidal waves in the Bay of Bengal that slammed into low-lying coastal Bangladesh, damaging thousands of houses, and killing at least seven people.

Thousands of people were evacuated from the Khulna district ahead of the storm but about 15,000 people are believed to still be stranded in eight flooded villages.

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