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Posts tagged Andaman Sea

Tropical Storm Mahasen (01B) Forecast to Turn North – May 13th, 2013

11.3N 85.2E

May 13th, 2013 Category: Image of the day, Tropical Storms

Tropical Storm Mahasen (01B) – May 11th, 2013

Enhanced image

Track of Tropical Storm Mahasen  (01B) - May 11th, 2013 © Univ. of Wisconsin

Track of TC 01B

Tropical Storm Mahasen (01B) is forecast to turn north in the next 12 hours along the southwestern periphery of the subtropical ridge (STR) situated over the northern Andaman Sea. After TAU 12, TC 01B is expected to slowly track north through TAU 36 before it turns northeastward as the STR re-orients in response to an approaching mid-latitude shortwave trough, which is currently over northern India.

Gulf of Martaban Considered for Ramsar List; Problems of Coral Bleaching in Andaman Sea

16.5N 97.0E

December 21st, 2012 Category: Climate Change, Wetlands

Myanmar – December 19th, 2012

While this image focuses on the Gulf of Martaban, in southern Myanmar, more of the Andaman Sea can be observed in the full image. The gulf is currently being considered to be added to the Ramsar list of Wetlands of International Importance. Reasons for including  the Gulf of Martaban include the fact that it supports a number of vulnerable, endangered or critically endangered species, including 50-70 spoon-billed sandpipers and more than 36 species of wading birds.

While the gulf is looking at increased environmental protection, other parts of the Andaman Sea are facing degradation. Coral reefs in the Andaman Sea, throughout the length and breadth of the Andaman group of islands, are losing their colour, owing to extensive bleaching. Experts say global warming is to blame, and that the bleaching problem in the area has existed since the late 1990s. Though a partial recovery has been observed, bleaching of coral reefs remains, nevertheless, a matter of grave concern since the damaged reefs will disturb the delicate ecological balance of the archipelago.

Coral bleaching occurs when there is a disturbance in the delicate symbiotic relationship between corals, which are living creatures, and the microscopic algae (zooxanthellae) they host. Both draw nutrients from each other for survival, and the coral’s beautiful colours are due to the zooxanthellae residing inside them. When a disturbance occurs, the zooxanthellae is ejected from the corals, leaving the white calcium carbonate of their skeletons visible – a phenomenon known as coral bleaching.

 

Gulf of Martaban Showing Fewer Sediments, Myanmar

16.8N 96.8E

April 23rd, 2012 Category: Sediments

Myanmar - April 14th, 2012

The Gulf of Martaban is an arm of the Andaman Sea in the southern part of Burma. The Salween Sittaung and Yangon rivers empty into it, and its waters usually appear opaque tan due to sediments, from the upper to the lower reaches. However, in this image fewer sediments are visible (click here for other images of the gulf). This difference may be due to a lack of rain or to changes in the tides.

Sediments by Ayeyarwady Delta and Gulf of Martaban, Myanmar – February 28th, 2012

16.5N 97.5E

February 28th, 2012 Category: Sediments

Myanmar - December 30th, 2011

The Irrawaddy Delta or Ayeyarwady Delta lies in the Ayeyarwady Region, the lowest expanse of land in Myanmar that 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. The delta region is densely populated, and plays a dominant role in the cultivation of rice in rich alluvial soil as low as just 3 meters above sea level.

Visible by the delta is the Gulf of Martaban, an arm of the Andaman Sea in the southern part of Myanmar. The brown sediments coloring its waters come from the Salween Sittaung and Yangon Rivers. The gulf has a tide-dominated coastline, with a tidal range of four to seven meters. 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. The edge of the highly turbid zone migrates back-and-forth in-sync with every tidal cycle by nearly 150 km.

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.