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Archive for October 10th, 2009

Valdés Peninsula and Lakes in Argentine Patagonia

42.5S 64W

October 10th, 2009 Category: Lakes, Rivers

Argentina - September 30th, 2009

Argentina - September 30th, 2009

Protruding from the coast of Chubut Province  in Argentine Patagonia is the Valdés Peninsula (or Península Valdés in Spanish). Two gulfs border the stretch of land connecting the peninsula to the mainland: Golf San José (above) and Golfo Nuevo (below).

Although much of the 3,625 km² peninsula is barren land, its salt lakes and shoreline provide an important habitat for sea mammals and birds, and is recognized as a nature reserve and UNESCO World Heritage site.

In the upper left quadrant, several lakes can be seen clustered around the Neuquén River (above) and the Limay River (below). All of the lakes are artificial: the southernmost one is a reservoir created by the El Chocón Dam, the pair of reservoirs to the north are part of the Cerros Colorados Complex, and the one to the east is Pellegrini Lake, made by filling a natural depression with water from the Neuquén River.

FAPAR Image of Florida and Southeastern USA – October 10th, 2009

25.7N 80.1W

October 10th, 2009 Category: Climate Change, Image of the day

Florida, USA - October 8th, 2009

Florida, USA - October 8th, 2009

FAPAR images such as this one, which focuses on the state of Florida, USA, indicate the photosynthetically active radiation absorbed by vegetation canopies. This false-colored image was generated by a new Chelys processor that processed and extracted the FAPAR index from raw data in just a few seconds.

The red regions correspond to agricultural zones for which there is high photosynthetic activity and therefore vegetation productivity and yellow to white areas indicate a low degree of photosynthetic activity.

FAPAR images are used to to monitor the state of and changes in the Earth’s vegetation cover. The image shows the states of South Carolina, Georgia and Florida, as well as parts of North Carolina, Tennessee and Alabama, in the southeastern United States. Several islands of the Bahamas are also visible.

Sand Dunes and Mountains in Kharan Desert Region, Pakistan

October 10th, 2009 Category: Snapshots

Pakistan - September 6th, 2009

Pakistan - September 6th, 2009

The Kharan Desert is a mountainous desert located in Kharan District, in the north-west of Pakistan’s Balochistan province. The desert climate is characterised by hot and very arid conditions.

The desert includes areas of sand dunes (above) and ridges of hills and mountains (below).  The ridges sweep in a southwest to northeast direction and are separated by lower valleys, easily observed in this orthorectified image.

The Kharan Desert was also the site of Pakistan’s second nuclear test, which took place in 1998.