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Posts tagged Circular Crops

Persian Gulf Between Dry Desert and Snowy Mountains

29.6N 48.5E

February 19th, 2011 Category: Deserts, Mountains, Rivers, Sediments

Saudi Arabia - January 17th, 2011

Sediments pour from the Shatt al-Arab River into the northern end of the Persian Gulf, by Iraq. In the full image, these sediments change from greyish tan, to vivid green, to bright teal, before dispersing into the dark blue waters of the gulf.

The gulf is flanked by desert in Saudi Arabia to the west. Some clusters of circular fields can be seen near the western banks in the full image. In contrast to the dry, flat desert, snowcapped mountains can be seen in Iran, to the northeast of the gulf.

Large Area of Circular Fields in Saudi Arabia

31.0N 38.5E

February 4th, 2011 Category: Deserts

Saudi Arabia - January 17th, 2011

The green circles composing this oddly angled geometrical shape are actually dozens of circular fields. Their circular shape and ability to flourish in the arid desert are both due to central pivot irrigation.

The fields are situated around the settlement of Al Basayta, in Saudi Arabia, near the border with Jordan. In the full image, other interesting geographical features such as a sandy desert and the Dead Sea can be observed.

Circular Fields Near Lake Nasser, Egypt and Sudan

23.1N 30.8E

January 4th, 2011 Category: Lakes

Egypt and Sudan - December 27th, 2010

The vast artificial reservoir known as Lake Nasser, in southern Egypt and northern Sudan, stands out against the surrounding tan Sahara Desert. The lake is mostly dark blue in color, although the southern reaches have a greenish tinge.

It is situated along the Nile River, which can be seen flowing northward from the bottom right. The smaller Toshka Lakes are visible west of Lake Nasser. Continuing further west, multiple circular, irrigated fields can be observed as well.

Circular Fields in Saudi Arabia by Jordan Border – December 4th, 2010

December 4th, 2010 Category: Image of the day

Jordan and Saudi Arabia - November 28th, 2010

The green area in the upper right quadrant of this image is composed of many circular irrigated fields on the usually dry terrain of Saudi Arabia, near the Jordan border. The fields are situated around the settlement of Al Basayta.

The fields are able to flourish in the arid region due to center-pivot irrigation, also called circle irrigation, a method of crop irrigation in which equipment rotates around a pivot.

Central pivot irrigation is a form of overhead (sprinkler) irrigation consisting of several segments of pipe (usually galvanized steel or aluminium) joined together and supported by trusses, mounted on wheeled towers with sprinklers positioned along its length. The machine moves in a circular pattern and is fed with water from the pivot point at the center of the circle.

Agriculture Between Toshka Lakes and Lake Nasser, Egypt

22.8N 32.5E

April 2nd, 2010 Category: Lakes, Rivers

Egypt - March 5th, 2010

Egypt - March 5th, 2010

The Nile River flows out of Lake Nasser, created by the Aswan High Dam, in Egypt, on its way northward to the Mediterranean Sea. The lake is some 550 km long and 35 km across at its widest point. It covers a total surface area of 5,250 km² in Egypt and Sudan and has a storage capacity of some 157 km³ of water.

of the reservoir are the Toshka Lakes, created by water drained from Lake Nasser in order to control its water level. This water is also used to irrigate crops in the region – here, some circular fields can be seen between Lake Nasser and the Toshka Lake located furthest eastward.