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Posts tagged Laguna Merín

Lagoons and Wetlands in Brazil, Uruguay and Argentina

28.2S 57.1W

April 7th, 2013 Category: Fires, Lakes, Wetlands

Brazil, Uruguay, Argentina – April 6th, 2013

Several bodies of water can be observed in this image of southern Brazil, Uruguay and Argentina. Near the coast are two lagoons: Lagoa dos Patos, in Brazil, and Lagoa Merim/Laguna Merín, shared by Brazil and Uruguay. There is a strong presence of sediments in both lakes.

In the upper left quadrant of the image are the Esteros del Iberá, or Iberá Wetlands, a mix of swamps, bogs, stagnant lakes, lagoons, natural slough and courses of water in the center and center-north of the province of Corrientes, Argentina. The Esteros are the second-largest wetlands in world after Pantanal in Brazil. They are of pluvial origin, with a total area 15,000 to 20,000 km². A fire can be seen near this wetlands area, releasing a white plume of smoke towards the south.

Sediments in Lagoa Mirim and Lagoa dos Patos, Brazil and Uruguay

32.7S 52.7W

December 3rd, 2012 Category: Lakes, Sediments

Uruguay and Brazil – December 2nd, 2012

Lagoa Mirim, as it is known in Brazil, or Laguna Merín in Uruguay, is a large estuarine lagoon which extends from the southern Rio Grande do Sul state in Brazil into eastern Uruguay. Lagoa Mirim is about 108 miles (174 km) long by 6 to 22 miles (35 km) wide.

Lagoa Mirim is separated from the Atlantic Ocean by a sandy, partially barren isthmus. It is more irregular in outline than its larger neighbor to the north, Lagoa dos Patos, and discharges into the latter through São Gonçalo Channel, which is navigable by small boats. Here, Lagoa Mirim appears greyish brown, while its neighbor to the north shows a mix of dark brown, reddish tan and green.

Both lagoons are the remains of an ancient depression in the coastline shut in by sand beaches built up by the combined action of wind and oceanic currents. They are at the same level as the ocean, but their waters are affected by the tides and are brackish only a short distance above the Rio Grande outlet.

Lagoons and Estuaries Along Coast of South America

32.7S 52.7W

November 8th, 2012 Category: Lakes, Sediments

Argentina – October 26th, 2012

Sediments can be seen in various bodies of water along the coast of South America. In the lower left quadrant is the Río de la Plata Estuary, between Argentina (minimally visible at the left edge) and Uruguay. The city of Montevideo can be seen along the shoreline by the estuary. Moving northeastward up the coast, Laguna Merín (or Lagoa Mirim) appears filled with greyish brown sediments, while Lagoa dos Patos, further up the coast in Brazil, shows sediments with a more reddish hue.

Array of Colors from Sediments in Lagoa dos Patos, Brazil

31.1S 51.4W

July 10th, 2012 Category: Lakes, Sediments

Uruguay and Brazil – July 9th, 2012

Sediments and phytoplankton growth give the Lagoa dos Patos, in southern Brazil’s state of Rio Grande do Sul, an array of different colors. Tan sediments can be seen entering the lagoon in the northern part, near the city of Porto Alegre, while reddish brown sediments enter below the middle by the upper shoreline, near the city of São Lourenço do Sul. The southern part of the lagoon is more green in color. Further south, greyish tan sediments can be observed in Lagoa Merim (Laguna Merín), on the Brazil-Uruguay border. Sediments also line the Atlantic shoreline between the two lagoons.

Interconnected Lagoons by Brazil-Uruguay Border: Lagoa dos Patos and Lagoa Mirim

31.1S 51.4W

May 17th, 2012 Category: Lakes

Uruguay, Brazil, Argentina - May 17th, 2012

Visible near the shoreline in the upper part of this image is the Lagoa dos Patos (meaning Lagoon of the Ducks), the second largest lagoon in Latin America and the biggest in Brazil. It is located in the state of Rio Grande do Sul, southern Brazil.

The lagoon is 174 miles (280 km) long, has a maximum width of 44 miles (70 km), and a total area of 3,803 sq. mi. (9,850 km). It is separated from the Atlantic Ocean by a sandbar about 5 miles (8 kilometers) wide. The navigable São Gonçalo Channel, which enters Lagoa dos Patos near the town of Pelotas, connects Lagoa dos Patos to Lagoa Mirim to the south.

Lagoa Mirim (or Laguna Merín in Spanish) is a large estuarine lagoon which extends from southern Rio Grande do Sul state in Brazil into eastern Uruguay. Lagoa Mirim is separated from the Atlantic Ocean by a sandy, partially barren isthmus.

Lagoa Mirim is about 108 miles (174 km) long by 6 to 22 miles (35 km) wide. It is more irregular in outline than its larger neighbor to the north, Lagoa dos Patos, and discharges into the latter through São Gonçalo Channel. Lagoa Mirim has no direct connection to the Atlantic, but the Rio Grande, a tidal channel about 24 miles (39 km) long which connects Lagoa dos Patos to the Atlantic, affords an entrance to the navigable inland waters of both lagoons and several small ports.

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