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Paraná Delta and Rio de la Plata Estuary, Argentina

34.6S 58.3W

January 29th, 2013 Category: Rivers, Wetlands

Argentina – January 28th, 2013

The Paraná River runs through Brazil, Paraguay and Argentina, where it flows into another river called Río de la Plata. Through the Parana Delta and the Rio de la Plata estuary, the second major hydrographic basin of South America (La Plata Basin) drains to the Atlantic Ocean.

From a geologic perspective, the complex system of the delta and the estuary are considered a dynamic sedimentary geologic-hydrologic unit which has a vital relevance not only for the region -a high populated area with more than 22 million inhabitants- but also for the hydrology of South American continent. According to the Intergovernmental Panel on Climate Change, the Rio de la Plata, the Amazon and the Orinoco carry into the Atlantic Ocean more than 30% of the renewable freshwater of the world.

The Delta of the Paraná River is one of the largest coastal wetlands systems of Argentina, spreading over 320 km and covering a surface of 15000 km2. The Delta presents a variable width, from 18 Km up to 100 km, and according to landscape parameters and hydrologic regimes, it presents more than 10 landscape units distributed in 3 zones: Superior, Medium and Lower Delta. The Parana Delta is rich in biodiversity and natural resources and faces the pressures of urban growth and the consequences of climate changes. It is a natural capital which represents a valuable benefit for the human population due to the ecosystem’s goods and services.

The high sediment transportation rate of the Parana River turns the delta into a changing territory whose front is expanding towards the Rio de la Plata and it is expected to reach the coast of the city of Buenos Aires (visible here as a grey area on the shores of the estuary) in around 110 years. This future trend makes important to develop a study of the complete system taking into account the natural phenomenon, the relation with the dynamics of the urbanization processes and climate changes (click here for more information).

Sediments from the Uruguay and Paraná Rivers in Rio de la Plata Estuary, Argentina and Uruguay – July 2nd, 2012

34.8S 57.5W

July 2nd, 2012 Category: Image of the day, Rivers, Sediments

Argentina and Uruguay – June 25th, 2012

The Uruguay and Paraná Rivers and the sediments they carry join together in the upper left quadrant of this image to form the extremely silty Río de la Plata river and estuary on the border between Argentina and Uruguay. As the sediments flow through the 290 kilometre (180 mi) long funnel-shaped indentation of the estuary, they gradually diffuse into deeper waters approaching the Atlantic Ocean and become lighter in color. Visible on the shores of the estuary are Buenos Aires, the capital of Argentina (left), and Montevideo, the capital of Uruguay (right).

Dams Along the Paraná River, Brazil

22.8S 53.7W

June 16th, 2012 Category: Rivers

Brazil - May 8th, 2012

The wide, greenish-blue line crossing this image of Brazil diagonally is the Paraná River. Here, the river appears widest and most blue in color behind the Engineer Sérgio Motta Dam, formerly known as the Porto Primavera Dam, in the state of São Paulo, Brazil.

South of the dam, the river forms a natural boundary between Paraguay and Brazil until the confluence with the Iguazu River. Shortly upstream from this confluence, however, the river is dammed by the Itaipu Dam, the second largest hydroelectric power station in the world (after the Three Gorges Dam in the People’s Republic of China), and creating another massive, shallow reservoir behind it.

After merging with the Iguazu, the Paraná then becomes the natural border between Paraguay and Argentina. Here, the outline of Argentina’s Misiones Province is clearly visible as it is darker green than the surrounding land in Paraguay (west) and Brazil (east).

Fires Near Paraná River in Argentina and Brazil – March 20th, 2012

26.9S 54.4W

March 20th, 2012 Category: Fires, Image of the day

Argentina, Brazil, Paraguay - March 19th, 2011

The dark green area in the lower part of this image shows the border of Argentina’s Misiones Province. The province is surrounded by Paraguay to the northwest, Brazil to the north, east and south, and Corrientes Province of Argentina to the southwest.

Visible to the north is the Paraná River, in Brazil. In the full image, a fire can be seen near the path of the river, releasing a plume of smoke to the southwest. Several other fires can also be seen in the lower half of the image, in and around Misiones.

Paraná River Running from Brazil to Argentina

22.4S 52.9W

December 18th, 2011 Category: Rivers

Brazil - December 18th, 2011

The Paraná River (running parallel to left edge) is a river in south Central South America, running through Brazil, Paraguay and Argentina for some 4,880 kilometres (3,030 mi). It is second in length only to the Amazon River among South American rivers.

It merges first with the Paraguay River and then farther downstream with the Uruguay River to form the Río de la Plata (partially visible at the lower left edge of the full image) and empties into the Atlantic Ocean. The stretch of the Paraná River in Brazil appears very wide due to the reservoir created by the Engineer Sérgio Motta Dam.

Also of note is the city of São Paulo, appearing as a tan area near the coast in the upper right quadrant of the image. The water of the Atlantic Ocean near the city appears white due to sun glint.

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