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Posts tagged Irrawaddy Delta

Vegetation Index Near Irrawaddy Delta, Myanmar

16.5N 97.0E

February 19th, 2012 Category: Vegetation Index

Myanmar - December 30th, 2011

This FAPAR image shows the vegetation index of southern Malaysia. The country has 1,930 kilometres (1,200 mi) of contiguous coastline along the Bay of Bengal and Andaman Sea to the southwest and the south, which forms one quarter of its total perimeter.

Myanmar has mountain chains that divide its three river systems, and fertile plains exist in the valleys between the mountain chains. Here, the Irrawaddy River, the country’s longest river, nearly 2,170 kilometres (1,348 mi) long, can be seen flowing into the Gulf of Martaban. In this image, the vegetation index is highest (rusty red) near the coast to the northwest of the Irrawaddy Delta. It is generally good (green) to the east of the delta. By the delta itself, and north of the Gulf of Martaban, the index is mixed, including some areas of low (yellow) photosynthetic activity.

Sediments in Gulf of Martaban and by Irrawaddy Delta, Myanmar

16.5N 97.0E

February 7th, 2012 Category: Rivers, Sediments

Myanmar - December 17th, 2011

Tides in the Gulf of Martaban range between 4-7m, and are highest to the west, by Elephant Point. During spring tide, when the tidal range is around 6.6 m, the turbid zone covers an area of more than 45,000 sq km making it one of the largest perennially turbid zones of the world’s oceans. During neap tide, with tidal range of 2.98 m, the highly turbid zone coverage drops to 15,000 sq km.  Here, sediments from the Salween Sittaung and Yangon Rivers.

Visible by the western edge of the gulf is the Irrawaddy Delta (or Ayeyarwady Delta), which lies in the Ayeyarwady Region, the lowest expanse of land in Myanmar. It fans out from the limit of tidal influence at Myan Aung to the Bay of Bengal and Andaman Sea, 290 km to the south at the mouth of the Ayeyarwady River.

Sediments in Irrawaddy River Delta and Gulf of Martaban, Myanmar

16.1N 94.4E

November 16th, 2011 Category: Rivers, Sediments

Myanmar - November 8th, 2011

In southern Myanmar, sediments pour forth from the delta of the Irrawaddy River (left) and from the Gulf of Martaban (right), into the Andaman Sea. The delta begins about 93 kilometres (58 mi) above Hinthada (Henzada) and about 290 kilometres (180 mi) from its curved base, which faces the Andaman Sea.

The westernmost distributary of the delta is the Pathein (Bassein) River, while the easternmost stream is the Yangon River, on the left bank of which stands Myanmar’s capital city, Yangon (Rangoon).  The relief of the delta’s landscape is low but not flat.[20] The soils consist of fine silt, which is replenished continuously by fertile alluvium carried downstream by the river.

Sediments in Irrawaddy Delta, Myanmar – November 13th, 2010

16.1N 96.2E

November 13th, 2010 Category: Image of the day, Rivers, Sediments

Myanmar - November 5th, 2010

The thick load of tan sediments in the lower part of this image is spilling forth from the mouth of the Irrawaddy (Ayeyarwady) River in Myanmar (Burma). It is the country’s largest river and most important commercial waterway.

Originating from the confluence of the N’mai and Mali rivers, it flows relatively straight North-South before emptying through the Irrawaddy Delta into the Andaman Sea. Its drainage area of about 413,000 km² covers a large part of Myanmar. Multiple braided channels can be seen in the delta area.

Convection Associated with Tropical Cyclone Five (05B) South of Irrawaddy Delta – November 5th, 2010

10.4N 86.7E

November 5th, 2010 Category: Image of the day, Rivers, Tropical Storms

Tropical Cyclone Five (05B) - November 5th, 2010

Enhanced image

Tropical Cyclone Five (05B), located approximately 500 nm east-southeast of Chennai, India, has tracked west-northwestward at 07 knots over the past six hours. The main images focuses on convection associated with the storm, south of the Irrawaddy (Ayeyarwady) delta in Myanmar.

The cyclone has maintained an intensity of 45 knots as it consolidates under moderate vertical wind shear. Banding features are still somewhat fragmented in enhanced infrared imagery. However, central convection continues to build.

Dvorak estimates from PGTW have steadied at a 3.0/3.0 or 45 knots over the past few fix cycles. The current position is based on imagery that places the low level circulation center within the eastern semicircle as convection shears westward.

Track of TC 05B

The system is tracking along the southern periphery of a subtropical steering ridge located to the north of the cyclone. It will continue to track along this ridge throughout the forecast, making landfall with India after TAU 48, but not before strengthening to near 75 knots.

A decrease in vertical wind shear, favorable upper-tropospheric outflow mechanisms, and a deep pool of warm water will all support intensification. After landfall the system will rapidly weaken and dissipate prior to emerging into the Arabian Sea.  Maximum significant wave height is 12 feet.