Earth Snapshot RSS Feed Twitter
 
 
 
 

Search Results for "manaus":

Confluence of Negro and Solimões Rivers by Manaus, Brazil

3.1S 60W

September 16th, 2010 Category: Fires, Rivers

Smoke from Fires in Bolivia - September 14th, 2010

The Negro River (dark, upper left) and Solimões River (tan) cross the upper half of this image. The two rivers meet near Manáus, the capital of the state of Amazonas in Brazil.

Their confluence is quite particular, as the rivers’ different colored waters run side by side without mixing for about 6km due to differences in temperature, speed and water density.

The lower half of the image is partially veiled by smoke blowing northward from many fires in Bolivia and Brazil that have been burning over the last month.

Vegetation Index and Deforestation Near Manáus and Santarém, Brazil – December 2nd, 2009

3.1S 60W

December 2nd, 2009 Category: Climate Change, Image of the day, Rivers

Brazil - November 19th, 2009

Brazil - November 19th, 2009

This FAPAR image shows an area of Amazon rainforest in Brazil, between Santarém in the state of Pará, where the Tapajós joins the Amazon River (right edge), and Manáus at the convergence of the Negro and Solimões (Upper Amazon) Rivers (left). FAPAR stands for Fraction of Absorbed Photosynthetically Active Radiation, which corresponds to the  area’s vegetation index.

In FAPAR images, the color spectrum over land runs from red (1.0), to green, to yellow and white (0.0), while bodies of water, such as the Amazon River running through the image center, generally appear blue.

High photosynthetic activity is present in dark red regions, such as those concentrated on the left side of the image. The photosynthetic activity decreases as one moves to the right side of the image, although green areas are also productive. Yellow to white zones, with the exception of clouds, indicate a low degree of photosynthetic activity; however, few such areas are present here.

Upon opening the full image, the distinctive herringbone pattern of some deforested areas is visible. Near the Amazon River, these areas appear as yellow lines amidst the surrounding green, while in the upper left quadrant the lines are green in contrast to the surrounding dark red.

The “Meeting of Waters” Near Manaus, Brazil – October 24th, 2009

3.1S 60W

October 24th, 2009 Category: Image of the day, Rivers

Brazil - September 29th, 2009

Brazil - September 29th, 2009

The city of Manaus, the capital of the state of Amazonas in Brazil, is situated at the confluence of the Negro and Solimões Rivers. The Negro River, true to its name, appears to have black waters, while the Solimões (or Upper Amazon) River is light brown.

The two rivers’ confluence is called the Meeting of Waters (in Portuguese, Encontro das Águas). For 6 km (3.7 mi) the rivers’ waters run side by side without mixing (near right edge, southeast of the city). This phenomena is due to differences in temperature, speed and water density of the two rivers. The Negro River flows at near 2 km per hour at a temperature of 22°C, while the  Solimões River flows between 4 to 6 km per hour at a temperature of 28°C.

Negro and Amazon Rivers Flowing Across Amazon Rainforest, Brazil

2.8S 62.2W

March 29th, 2013 Category: Rivers

Brazil – March 26th, 2013

Flowing across the upper portion of this image of the Amazon Rainforest is the Rio Negro, a river with dark, almost black-coloured, water (although part of the river to the east appears light here due to sun glint), while the sandy-coloured Amazon River, or Rio Solimões, flows across the lower part of the image. The two rivers converge near Manaus (not visible here), where for 6 km (3.7 mi) their waters run side by side without mixing, due to differences in temperature, speed and water density.

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.

About Us

Earth Observation

Organisations

Archive

December 2014
M T W T F S S
« Mar    
1234567
891011121314
15161718192021
22232425262728
293031  

Categories


Bulletin Board


Featured Posts

Information

50


Take Action

Widgets