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Sediments in Amazon River Mouth, Brazil

0.2N 50.2W

August 7th, 2012 Category: Rivers, Sediments

Brazil – August 6th, 2012

The Amazon River has the largest drainage basin in the world, about 7,050,000 square kilometres (2,720,000 sq mi), which accounts for approximately one-fifth of the world’s total river flow.

The width of the Amazon varies between 1.6 and 10 kilometres (1.0 and 6.2 mi) at low stage, but expands during the wet season to 48 kilometres (30 mi) or more. The river enters the Atlantic Ocean in a broad estuary about 240 kilometres (150 mi) wide. The mouth of the main stem is 80 kilometres (50 mi). Here, sediments can be seen pouring out of its wide mouth and into the Atlantic.

Sediments in Mouth of Amazon River, Brazil – June 14th, 2012

0.3N 50.1W

June 14th, 2012 Category: Image of the day, Rivers, Sediments

Brazil - May 22nd, 2012

A thick load of sediments spills forth from the Amazon River, in South America. It is the second longest river in the world and by far the largest by waterflow with an average discharge greater than the next seven largest rivers combined. The Amazon, which has the largest drainage basin in the world, about 7,050,000 square kilometres (2,720,000 sq mi), accounts for approximately one-fifth of the world’s total river flow. Here, the land near the rivermouth is partially covered by dotted white clouds, often called “popcorn clouds”, that tend to form above very actively photosynthesizing plants, such as those of the Amazon Rainforest.

Sediments from Amazon River Entering Atlantic Ocean

0.4N 49.7W

November 4th, 2011 Category: Sediments

Brazil - October 24th, 2011

The Amazon River of South America is the second longest river in the world and by far the largest by waterflow with an average discharge greater than the next seven largest rivers combined. Here, thick brown sediments can be seen flowing from the river mouth into the Atlantic Ocean.

The river enters the Atlantic Ocean in a broad estuary about 240 kilometres (150 mi) wide. The mouth of the main stem is 80 kilometres (50 mi). The Amazon, which has the largest drainage basin in the world, about 7,050,000 square kilometres (2,720,000 sq mi), accounts for approximately one-fifth of the world’s total river flow.

Marajó Archipelago in Amazon River Mouth, Brazil

0.9S 49.5W

September 27th, 2011 Category: Sediments

Brazil - September 7th, 2011

Several islands can be observed in the delta lowlands at the mouth of the Amazon in the state of Pará, Brazil. The islands form part of the low-lying marajó várzea, the inundated land in and around the mouth of the Amazon River.

The islands offer an excellent place to observe the tidal bore called the pororoca, where the Amazon river waters meet the incoming Atlantic tides and form a standing wave.

The largest of these islands is Marajó, with a land area of 40,100 km² (15,500 sq mi), which compares to the size of Switzerland. It is the largest island to be completely surrounded by freshwater in the world. Although its northeast coastline faces the Atlantic Ocean, the outflow from the Amazon is so great that the sea at the mouth is quite unbriny for some distance from shore.

Together with smaller neighboring islands, separated from Marajó by rivers, it forms the Marajó Archipelago, with an aggregate area of 49,602 km² (19,151 sq mi). Large parts of the islands are flooded during the rain season, because of higher water levels of the Amazon River along the coast and of heavy rainfall in the interior.

Popcorn Clouds Near Amazon River Mouth, Brazil

0.1S 49W

September 23rd, 2011 Category: Clouds, Rivers, Sediments

Brazil - September 21st, 2011

Popcorn clouds hovering in the skies over the Brazilian Amazon Rainforest help to highlight the channels of the Amazon River. The river’s mouth can be seen near the image center, where dense brown sediments are being released into the Atlantic Ocean.

The definition of where exactly the mouth of the Amazon is located, and how wide it is, a matter of dispute, because of the area’s peculiar geography. The Pará and the Amazon are connected by a series of river channels called furos near the town of Breves; between them lies Marajó, an island almost the size of Switzerland that is the world’s largest combined river/sea island.