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Archive for Image of the day

Gulf of Venezuela Between Guajira and Paraguaná Peninsulas – December 25th, 2009

10.6N 71.6W

December 25th, 2009 Category: Image of the day, Lakes

Venezuela - December 16th, 2009

Venezuela - December 16th, 2009

Sediments in the Gulf of Venezuela appear greenish by the Guajira Peninsula, on the west side of the gulf, and brown below the Paraguaná Peninsula, on the east side. The gulf is connected to Lake Maracaibo, in Venezuela to the south, by the 54 km Tablazo Strait. Beneath the partial cloud cover the lake appears greyish blue.

The Paraguaná Peninsula is a peninsula in Venezuela, situated in the north of Falcón state. The island of Aruba lies 27 km to the north. Bonaire and Curaçao are slightly further away. The Paraguaná Peninsula is connected to the rest of the state by a natural isthmus of Médanos.

The Guajira Peninsula, on the other hand, is shared by Colombia and Venezuela. It is the northernmost peninsula in South America and has an area of 25,000 km² (5500 square miles) extending from the Manaure Bay (Colombia) to the Calabozo Ensenada in the Gulf of Venezuela (Venezuela), and from the Caribbean Sea to the Serrania del Perija mountains range. The part of the peninsula furthest to the north is called Punta Gallinas; it is also considered the northernmost part of mainland South America.

Southern California, USA, and Baja California, Mexico – December 24th, 2009

31.7N 114.7W

December 24th, 2009 Category: Image of the day

Mexico - November 17th, 2009

Mexico - November 17th, 2009

This image stretches from the southern half of the California Central Valley, USA, in the upper left quadrant, to El Vizcaíno Biosphere Reserve, in Baja California, Mexico, in the lower right quadrant. In between the two, the Colorado River spills tan sediments around Montague Island into the Sea of Cortes, also known as the Gulf of California.

Several mountain ranges can also be observed, including the Sierra Nevada Range, which bounds the California Central Valley to the east, the Tehachapi Mountains, south of the valley.

East of the Sierra Nevada ranges lies the large desert of the Intermontane Plateaus a large, arid desert. The southern portion of this region, known as the Great Basin, contains salt flats, drainage basins, and many smaller mountain ranges running north to south.

Mountains of Sardinia and Corsica – December 23rd, 2009

41.2N 9.2E

December 23rd, 2009 Category: Image of the day

Sardinia and Corsica - November 17th, 2009

Sardinia and Corsica - November 17th, 2009

The islands of  Sardinia (below), belonging to Italy, and Corsica (above), belonging to France, are separated by the Strait of Bonifacio. It is about 7 miles (11 km) wide and divides the Tyrrhenian Sea from the western Mediterranean Sea. The strait is notorious for its weather, currents, shoals, and other obstacles.

Mountains comprise two-thirds of Corsica, forming a single chain, some of which is capped with snow in this image. Monte Cinto is the highest peak at 2,706 metres (8,880 ft), and 20 other summits reach higher than 2,000 metres (6,600 ft).

The coasts of Sardinia (1,849 km long) are generally high and rocky, with ample and deep bays and inlets surrounded by smaller isles. The center of the island is occupied by the Gennargentu, a large mountain massif whose highest peaks are Punta La Marmora (1,834 m), Monte Limbara (1,362 m) and Mount Rasu (1,259 m).

The island’s massifs and plateaus are separated by large alluvial valleys and flatlands; the main plains are the Campidano, located in the southwest between Oristano and Cagliari, and the Nurra, in the northwest.

Fires West of Wetlands in Southern Sudan – December 22nd, 2009

8.3N 30.7E

December 22nd, 2009 Category: Fires, Image of the day, Lakes, Rivers

Sudan - December 16th, 2009

Sudan - December 16th, 2009

This green area of wetlands in southern Sudan includes Lake No, near the river at the top, the Zefah Game Reserve, center, and part of the swamp of the Sudd, below. Several fires are visible just west of the wetlands.

Lake No is a lake in Sudan. It is located just north of the vast swamp of the Sudd, at the confluence of the Bahr al Jabal and Bahr el Ghazal rivers. It marks the transition between the Bahr al Jabal and White Nile proper.

The Sudd, also called the Bahr el Jebel, As Sudd or Al Sudd in southern Sudan, is a vast swamp formed by the White Nile. The area covered thereby is one of the world’s largest wetlands and the largest freshwater wetland in the Nile basin.

Rivers Crossing Georgia and Releasing Sediments into Black Sea – December 21st, 2009

42.3N 41.4E

December 21st, 2009 Category: Image of the day, Rivers

Georgia - November 24th, 2009

Georgia - November 24th, 2009

Western Georgia’s landscape ranges from low-land marsh-forests, swamps, and temperate rain forests to eternal snows and glaciers. Here, rivers flowing down from the Caucasus Mountains cross the Colchis Plain and release brown sediments into the Black Sea.

Forests cover around 40% of Georgia’s territory while the alpine/subalpine zone accounts for roughly around 10% of the land. However, much of the natural habitat in the low-lying areas of Western Georgia has disappeared over the last 100 years due to the agricultural development of the land and urbanization.

The large majority of the forests that covered the Colchis Plain are now virtually non-existent with the exception of the regions that are included in the national parks and reserves. At present, the forest cover generally remains outside of the low-lying areas and is mainly located along the foothills and the mountains.