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Ash from Puyehue Volcano Over Neuquén and Buenos Aires, Argentina – June 17th, 2011

37.4S 65.3W

June 17th, 2011 Category: Volcanoes

Chile and Argentina - June 13th, 2011

Close-up of Volcano

Ash from the 2011 Puyehue volcanic eruption, which began on June 4th, spreads from Chile, across Argentina, and out over the Atlantic Ocean.

The ash has precipitated over the Argentine cities of Villa la Angostura, Bariloche and the northern part of Chubut province.

Here, the ash cloud veils reservoirs by the confluence of the Neuquén and Limay Rivers in Neuquén province.  It reaches eastward to Bahía Blanca, and northeast to Buenos Aires, where it can be seen in the skies over the sediment-laden Rio de la Plata estuary.


Buenos Aires Lake / General Carrera Lake on Argentina-Chile Border

46.5S 71.3W

June 5th, 2011 Category: Lakes, Mountains

Argentina - May 23rd, 2011

The large lake in Patagonia surrounded by the Andes Mountains in this image of the Chile-Argentina border zone is known as both Buenos Aires Lake (in Argentina) and General Carrera Lake (in Chile).

The lake has a surface of 1,850 km² of which 970 km² are in the Chilean Aisén Region, and 880 km² to the Argentine Santa Cruz Province. It is of glacial origin.

Sediments by Buenos Aires, Montevideo and Bahia Blanca, Argentina and Uruguay

7.3S 38.4W

December 16th, 2010 Category: Rivers, Sediments

Argentina and Uruguay - December 14th, 2010

Sediments spill forth from the Rio de la Plata estuary, passing the cities of Buenos Aires, Argentina (grey area on the lower banks) and Montevideo, Uruguay (grey area on the upper banks).

Sediments can also be seen near the city of Bahía Blanca, further down the coast (bottom center). Visible even further to the south in the full image is the Valdes Peninsula. Of note offshore is a faint phytoplankton bloom, the remnants of one observed earlier (click here for previous article).

Finally, moving back to the north, the Mar Chiquita can be observed in the upper left corner. It is a salt lake whose waters appear mostly green.

Sediments in Rio de la Plata Estuary Between Buenos Aires and Montevideo – October 26th, 2010

35.4S 56.5W

October 26th, 2010 Category: Image of the day, Rivers, Sediments

Argentina and Uruguay - October 12th, 2010

As Spring begins in the southern hemisphere, the terrain near the Argentine and Uruguayan capitals of Buenos Aires and Montevideo, respectively, takes on a bright green color.

The two cities, on the other hand, appear as grey areas near the shores of Rio de la Plata estuary. The cities are located on opposite sides, with Buenos Aires to the west and Montevideo to the east.

Tan sediments from the Uruguay and Paraná Rivers flow into the Rio de la Plata, making it appear brown in color. As the estuary widens and the sediments move out into the Atlantic Ocean, they become more diffuse and lighter tan in color.

Sediments From Rio de la Plata Pass Buenos Aires, Argentina

34.6S 58.3W

June 12th, 2010 Category: Image of the day, Rivers, Sediments

Argentina - June 6th, 2010

Argentina - June 6th, 2010

Argentina has an area of 1,073,520 sq mi (2,780,403 sq km) and a population (2009 est.) of about 40,276,000. The capital is Buenos Aires, visible near the center of the image along the lower shores of the Rio de la Plata estuary (neighboring country Uruguay is visible along the upper shores). Dense sediments flow out of the estuary and into the Atlantic Ocean.

Argentina can be divided into four general regions: the North, the Pampas, Patagonia, and the Andes Mountains. The subtropical plains in the northeast are divided by the Paraná River into Mesopotamia to the east and Gran Chaco to the west and north.