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Vegetation Index of Southeast Asia – December 14th, 2011

15.8N 102.4E

December 14th, 2011 Category: Image of the day, Vegetation Index

Southeast Asia - December 12th, 2011

This FAPAR image shows the vegetation of Southeast Asia, including parts of China and China’s Hainan Island, Vietnam, Laos, Thailand, Cambodia and Myanmar. Photosynthetic activity is generally good (green) throughout the image.

The vegetation index is highest (rusty red) at the base of the Malay Peninsula at in the lower left corner and in the mountainous region in the upper left quadrant. It is lowest (yellow) in central and eastern Thailand.

Mekong River Flowing Past Phnomnh Penh, Cambodia and Vietnam – November 12th, 2011

11.5N 104.9E

November 12th, 2011 Category: Image of the day, Rivers

Cambodia and Vietnam - November 7th, 2011

This APM image shows the Mekong River crossing Cambodia and flowing past Phnomh Penh, towards Vietnam (visible in the lower part of the full image). Located on the banks of the Mekong, Phnom Penh is the capital and largest city of Cambodia.

The Mekong is the world’s 10th-longest river and the 7th-longest in Asia, with an estimated length of 4,909 km (3,050 mi). It drains an area of 795,000 km2 (307,000 sq mi), discharging 475 km3 (114 cu mi) of water annually. The extreme seasonal variations in flow and the presence of rapids and waterfalls in this river have made navigation extremely difficult.

Flat Floodplains in Southern Vietnam – November 7th, 2011

10.0N 105.0E

November 7th, 2011 Category: Image of the day

Vietnam - November 7th, 2011

This APM image shows part of Vietnam’s Mekong Delta Region, near the border with Cambodia. It is the region in southwestern Vietnam where the Mekong River approaches and empties into the sea through a network of distributaries.

The Mekong delta region encompasses a large portion of southwestern Vietnam of 39,000 square kilometres (15,000 sq mi), although the size of the area covered by water depends on the season.

The Mekong Delta region of Vietnam displays a variety of physical landscapes, ranging from mountains and highlands to the north and west to broad, flat floodplains in the south. This image focuses on those flat floodplains.

Wetlands of the Tonlé Sap, Cambodia – October 30th, 2011

12.9N 104.0E

October 30th, 2011 Category: Image of the day, Lakes

Cambodia - October 29th, 2011

The Tonlé Sap, visible as a light green area in the center of this image, is a combined lake and river system of major importance to Cambodia. It is the largest freshwater lake in South East Asia and an ecological hot spot that was designated as a UNESCO biosphere in 1997.

The Tonlé Sap is unusual for two reasons: its flow changes direction twice a year, and the portion that forms the lake expands and shrinks dramatically with the seasons. From November to May, Cambodia’s dry season, the Tonlé Sap drains into the Mekong River at Phnom Penh. However, when the year’s heavy rains begin in June, the Tonlé Sap backs up to form an enormous lake.

Vegetation Index of Southeast Asia

11.0N 106.7E

May 4th, 2011 Category: Vegetation Index

Southeast Asia - April 27th, 2011

This FAPAR image shows the vegetation index of part of Southeast Asia, including areas of Vietnam, Cambodia and Thailand (right to left, above), as well as Malaysia (below) and Indonesia (bottom of full image).

Most of the image shows predominantly good (green) to high (rusty red) photosynthetic activity, particularly in Malaysia and on the Indonesian island of Sumatra. Some areas of low activity (yellow) can be observed in Cambodia near the Tonle Sap.