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Archive for November 6th, 2009

The Nile River Between the Nubian and Bayuda Deserts, Sudan

15.5N 32.5E

November 6th, 2009 Category: Rivers

Sudan - September 24th, 2009

Sudan - September 24th, 2009

The Nile River makes its way northeast through Sudan, towards Egypt. In the upper part of the image, it curves around and southwards before resuming its northward trajectory.

This curve separates two regions of desert: the Nubian Desert and the Bayuda Desert. Thee area above is part of the former, while the terrain below belongs to the latter.

The Nubian Desert is in the eastern region of the Sahara Desert, spanning 50,000 km² of northeastern Sudan between the Nile and the Red Sea. The arid region, a largely sandstone plateau, has lots of wadis flowing towards the Nile. There is virtually no rainfall in the Nubian, and there are no oases.

The Bayuda Desert, on the other hand, is located north of modern Khartoum, west of Kadabas, and south of the Nubian Desert, together making up part of the Sahara’s eastern flank.

Lakes on the Flatlands of Alaska’s Northern Coast, USA

70.5N 153.6W

November 6th, 2009 Category: Lakes

Alaska, USA - September 6th, 2009

Alaska, USA - September 6th, 2009

The northern coastal region of Alaska, along the shores of the Arctic Ocean, is home to many lakes. In this ASAR image, they appear as large black holes in the surrounding landscape.

Alaska has more than three million lakes. Marshlands and wetland permafrost cover 188,320 square miles (487,747 km2). These are mostly found in northern, western and southwest flatlands, such as those visible here along the northern shores.

Here, Smith Bay can be seen in the upper left corner. To its right is another bay, the less indented Avatanak Bight. The two largest lakes just south of the bight are Naluakruk Lake (more rounded, left) and Okalik Lake (right).

Southwest of those two is actually another larger body of water, the 22 mile wide Teshekpuk Lake. However, it is difficult to identify here as much of its water appears grey rather than black.

Countries Surrounding the Eastern Mediterranean Sea – November 6th, 2009

34.9N 33.3E

November 6th, 2009 Category: Image of the day, Lakes, Rivers

Eastern Mediterranean - September 24th, 2009

Eastern Mediterranean - September 24th, 2009

This view of the eastern part of the Mediterranean Sea includes the island nation of Cyprus, as well as (counterclockwise along the shoreline from bottom left) Egypt and the Sinai Peninsula, Israel-Palestine, Lebanon, Syria and Turkey. Inland, Jordan and parts of Saudi Arabia and Iraq are also visible.

The dry, arid landscape occupying most of the image is interrputed by several lakes and rivers. Below, in Egypt, the Nile River Delta creates a wide, fan-shaped green area along the Mediterranean coast.

To the northeast, the Dead Sea can be seen in the Jordan Rift Valley, between Israel-Palestine and the West Bank (left) and Jordan (right). The lower part of this inland sea appears  greenish due to an extensive network of salt evaporation pans called the Dead Sea Dikes.

Continuing to the north, Lake Assad is visible in Syria, connected to the Euphrates River. North of Lake Assad is Lake Atatürk Dam, in Turkey.

Finally, also located in Turkey, at the top left, is Lake Tuz. In contrast with the other lakes seen in this image, Lake Tuz appears bright white. It is a salt lake, and the second largest lake in Turkey.

The Dolgaya Spit Between Taganrog Bay and the Sea of Azov, Russia

46.6N 37.7E

November 6th, 2009 Category: Lakes

Russia - October 7th, 2009

Russia - October 7th, 2009

The Sea of Azov is bounded on the north by Ukraine (top), on the east by Russia (right) and on the west by the Crimean peninsula.

It is the shallowest sea in the world, with an average depth of 13 metres (43 ft) and maximum depth of 15.3 metres (50 ft), although some parts of it, such as Taganrog Bay (upper half of the image), the average depth is less than 1 metre (3 ft).

At the uppermost reaches of Taganrog Bay is the mouth of the Don River (top right), which can be seen here tinting the bay’s shallow waters green with sediments. Marking the lower limits of the bay, on the other hand, is the Dolgaya Spit.

The Dolgaya Spit is a sandy spit with a length of about 17 km and a width of about 500 m, appearing here as a thin, faint yellowish line extending northeastward from the peninsula in the center of the image.