۱۳۹۲ شهریور ۴, دوشنبه

Lut Desert

Lut desert

Lut Desert, is a large salt desert in southeastern Kerman Iran and is the world's 25th largest desert. The surface of the sand there has been measured at temperatures as high as 70.7°C (159°F), and it is one of the world's driest places. Measurements of MODIS (Moderate-Resolution Imaging Spectroradiometer) installed on NASA's satellite "Aqua" from 2003 to 2005 testify that the hottest land surface on Earth is located in Dasht-e Lut and land surface temperatures reach here 70.7 °C (159.3 °F), though the air temperature is cooler. Precision of measurements is 0.5 K to 1 K. The hottest part of Dasht-e Lut is Gandom Beryan, a large plateau covered in dark lava, approximately 480 square kilometeres (190 sq mi) in area. According to a local legend, the name (in translation from Persian — "Toasted wheat") originates from an accident where a load of wheat was left in the desert and was eventually scorched by the heat in a few days.

Nebka the wonderful phenomena of Lut desert

 20 km from Shahdad, shrubs of “Gaz” are found in vase-like shapes in the desert, in a phenomenon called “Nebka”. Nebka usually appear on a desert surface which contains an average amount of sand or gravel with high level of underground water. The shape of the Nebka depends on the size, aggregation, and growth rate of the host plant. In the Lut desert, “Rebdou” can also be found. A Rebdou is bigger than a Nebka and more complicated in shape, sometimes consisting of several vase-like dunes together. The highest Rebdous are mostly found in Western Lut and can be up to 12 m in height.








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