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Posts tagged Amazonas

Juruá River Running Through Amazon Rainforest, Brazil

7.6S 72.6W

April 25th, 2013 Category: Rivers

Brazil – April 25th, 2013

Some populated areas can be seen near the banks of rivers running through the Amazon Rainforest in the Brazilian states of Acre (below) and Amazonas (above). Near the left edge in the upper left quadrant is the municipality of Cruzeiro do Sul, on the banks of the Juruá River.

The Juruá is a southern affluent river of the Amazon River west of the Purus River, sharing with this the bottom of the immense inland Amazon depression, and having all the characteristics of the Purus as regards curvature, sluggishness and general features of the low, half-flooded forest country it traverses. It rises among the Ucayali highlands, and is navigable and unobstructed for a distance of 1133 miles (1823 km) above its junction with the Amazon. It has a total length of approximately 1500 miles (2414 km), and is one of the longest tributaries of the Amazon.

Vegetation Index of Amazon Rainforest, Brazil

4.2S 66.7W

March 27th, 2013 Category: Climate Change, Vegetation Index

Brazil – March 26th, 2013

This image shows the Normalized Difference Vegetation Index (NDVI) of the Amazon Rainforest, mostly in the Brazilian state of Amazonas. Dark green areas indicate a high index, while yellow and brown areas indicate a low index. Scientists have reported that climate change is leading to substitution of rainforest with savanna-like and semiarid vegetation, a phenomenon known as the Amazon forests’ “dieback”, particularly around the edges of the forest. Monitoring the NDVI in images such as this one allows researchers to see how fast and how much rainforest is being replaced with drier vegetation.

Sun Glint on Rivers Crossing Amazon Rainforest, Brazil

2.4S 66.5W

March 26th, 2013 Category: Rivers

Brazil – March 26th, 2013

The Amazon River and several of its tributaries can be seen flowing across this image, amidst the green vegetation of the Amazon Rainforest in the Brazilian state of Amazonas. The rivers appear silver in color due to sun glint. Despite the lush green of the vegetation visible here, the Amazon Biome is threatened by climate change and deforestation, resulting in the substitution of forests with savanna-like and semiarid vegetation in many areas.

Convergence of Branco and Negro Rivers, Brazil – February 9th, 2013

1.4S 61.6W

February 9th, 2013 Category: Image of the day, Rivers

Brazil – January 23rd, 2013

This image of the Amazon Rainforest, in Brazil, also shows the confluence of the Branco River (right) and Negro River (left), near the border of the states of Amazonas and Roraima. The Rio Branco (meaning White River) is the principal affluent of the Rio Negro (meaning Black River) from the north.The Branco flows nearly south, and finds its way into the Negro through several channels and a chain of lagoons similar to those of the latter river. It is 350 miles (560 km) long.

The Rio Negro, in turn, is the largest left tributary of the Amazon and the largest blackwater river in the world. It flows into the Rio Solimões to form the Amazon River South of Manaus, Brazil. Rio Negro is navigable for 700 kilometres (430 mi) from its mouth in 1 metre of water in the dry season, but it has many sandbanks and minor difficulties. In the wet season, it floods the country far and wide, sometimes to a width of 30 kilometres (19 mi), for long distances, and for 650 kilometres (400 mi) upstream. During this time, from April until October, it is a succession of lagoons, full of long islands and intricate channels.

Fires Continue to Blaze in Brazil

11.5S 63.5W

September 11th, 2012 Category: Fires

Brazil – August 29th, 2012

Fires continue to blaze across Brazil, burning land in the states of Rondônia, Mato Grosso and Amazonas (click here for previous images). These fires are likely agricultural, set by farmers to clear land for crops, and may be contributing to problems of deforestation in the region.

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