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Posts tagged Tonlé Sap

Sediments Entering Tonlé Sap, Cambodia

12.9N 104.0E

February 7th, 2012 Category: Lakes

Cambodia - December 17th, 2011

The Tonle Sap is the largest freshwater lake in Southeast Asia. It is of global significance and was nominated as a Biosphere Reserve in October 1997 under the Man and Biosphere Program of UNESCO Here, sediments can be seen entering the lake from rivers along the northern shoreline.

The Tonle Sap’s watershed supports an estimated 3 million Cambodians, most of whom derive subsistence-level incomes mainly through fishing from the lake. The Tonle Sap’s natural resources are coming under pressure from exploitation of the fisheries but also firewood collection, agricultural encroachment, and hunting and collecting of wildlife resources.

Tonlé Sap During Middle of Dry Season, Cambodia

12.9N 104.0E

January 14th, 2012 Category: Lakes

Cambodia - January 14th, 2012

This APM image shows the western part of the Tonlé Sap (loosely translated as “Great Lake”) and surrounding floodplain. The Tonlé Sap is the largest freshwater lake in South East Asia, and is part of a complex lake and river system.

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. This image shows the lake towards the middle of the dry season.

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.

Hazy Skies and Fires Near the Tonlé Sap in Southeast Asia

April 28th, 2010 Category: Fires, Lakes

Cambodia and Thailand - March 5th, 2010

Cambodia and Thailand - March 5th, 2010

This image of Southeast Asia includes parts of Myanmar, Thailand, Cambodia, Vietnam and Laos. Upon opening the full image, some fires are visible southwest of the  Tonlé Sap, a large lake in Cambodia. Some smoky haze from other fires in the region can also be observed in the upper left quadrant.

The Tonlé Sap, appearing tan and green from sediments, here, is the largest freshwater lake in Southeast Asia, occupying a large depression. It is part of a combined lake and river system that is particular in that its flow changes direction twice a year.

Southeast Asia Showing a Generally Good Vegetation Index

16.0N 102.8E

April 9th, 2010 Category: Vegetation Index

Thailand - March 5th, 2010

Thailand - March 5th, 2010

This FAPAR image shows parts of China, Vietnam, Laos, Thailand and Cambodia (counterclockwise from upper right) in southeast Asia. Areas of low photosynthetic activity appear yellow, those with good activity green, and those with high activity red.

The majority of the image appear green, thus indicating a good vegetation index. A high index can be observed in places along the coast of Vietnam, peninsular Thailand, and a few other areas.

Much of the center of Thailand, dominated by the Chao Phraya river valley, has a lower index, appearsing yellow to light green in color. Areas in Cambodia around the Tonlé Sap Lake change abruptly from a good to a very low, whitish yellow index.

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