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Dasht-e Lut

Coordinates: 30°36′18″N 59°04′04″E / 30.60500001°N 59.0677777878°E / 30.60500001; 59.0677777878
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Dasht-e Lut
Dasht-e Lut is located in Iran
Dasht-e Lut
Dasht-e Lut
Location within Iran
Floor elevation108 m (354 ft)[1]
Length480 km (300 mi)
Width320 km (200 mi)
Area51,800 km2 (20,000 sq mi)
Geography
CountryIran
Coordinates30°36′18″N 59°04′04″E / 30.60500001°N 59.0677777878°E / 30.60500001; 59.0677777878 
Official nameLut Desert
Criteriavii, viii
Reference1505
Inscription2016 (40th Session)
Websitewww.lutDesert.ir

The Lut Desert, widely referred to as Dasht-e Lut (Persian: دشت لوت, "Emptiness Plain"), is a salt desert located in the provinces of Kerman and Sistan-Baluchestan, Iran. It is the world's 33rd-largest desert, and was included in UNESCO's World Heritage List on July 17, 2016.[2]

TThe name is derived from Lut which means 'bare, empty' in Persian[3][4][5] and dasht which means 'plain' in Persian.[6][7]

The surface of its sand has been measured at temperatures as high as 70.7 °C (159.3 °F), the highest-known land surface temperature.[8][9]

Description

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Iran is climatically part of the Afro-Asian belt of deserts, which stretches from Mauritania all the way to Mongolia.

Iran's geography consists of a plateau surrounded by mountains and divided into drainage basins. Dasht-e Lut is one of the largest of these drainage basins, 480 kilometers (300 mi) long and 320 kilometers (200 mi) wide,[10]

The area of the desert is about 51,800 square kilometres (20,000 sq mi),[11] the largest in Iran after Dasht-e Kavir. During the spring wet season, water briefly flows down from the Kerman mountains, but it soon dries up, leaving behind only rocks, sand, and salt.

The eastern part of Dasht-e Lut is a low plateau covered with salt flats with lowest elevations around 110 m above sea level (30.398609 N, 58.493041 E). In contrast, the center has been sculpted by the wind into a series of parallel ridges and furrows, extending over 150 km (93 mi) and reaching 75 metres (246 ft) in height.[10] This area is also riddled with ravines and sinkholes. The southeast is a vast expanse of sand, like a Saharan erg, with dunes 300 metres (980 ft) high, among the tallest in the world.[10]

Yardangs in Lut Desert, Kerman Province, Iran

Geology

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According to one study, more than half of the desert's surface is covered by volcanic rocks. Evaporites can be observed during hot periods. [citation needed]

Archaeology

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Around 2500 BC, a flourishing civilization existed in this area. The ancient city of Shahdad was located on the western edge of the Lut desert. And on the eastern side, there was a large, 200 ha (490 acres), ancient city today called Shahr-e Sukhteh or Burnt City, on the former, now dry, Helmand River.[12]

The Lut area is an important region for Iranian archaeology. Recently, an extensive archaeological survey was conducted on the eastern flank of Kerman range and close to the western fringes of Lut Desert. As a result, eighty-seven ancient sites dating from the fifth millennium BC to the late Islamic era were identified. Twenty-three of these sites are assigned to the Chalcolithic period and Bronze Age.[13]

Climate

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Namak-Zar region of Dasht-e-Lut, from space

The hottest land surface on Earth recorded by the Moderate-Resolution Imaging Spectroradiometer installed on NASA's Aqua satellite from 2003 to 2010 was in Dasht-e Lut, with land surface temperatures reaching 70.7 °C (159.3 °F) in 2005,[9][14] although the air temperature at that time could have be anywhere from 30 to 54 °C (54 to 97 °F).[9] The precision of these measurements was between 0.5 K and 1 K.[15][16] In 2019, authors reported a land surface temperature of 80.83 °C (177.49 °F), based on newer MODIS data.[17]

As of 2020, there are no permanent weather stations in Dasht-e Lut, which makes the exact climate uncertain. Based on neighboring stations, Dasht-e Lut likely receives less than 30 millimetres (1.2 in) of precipitation a year.[17] In comparison, the Atacama Desert receives an average of 15 mm (0.59 in) of precipitation per year,[18] with some areas receiving as little as 1 to 3 mm (0.04 to 0.12 in) a year.[19]

See also

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Further reading

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References

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  1. ^ "Lut desert map". Google Map.
  2. ^ "Lut Desert". UNESCO World Heritage Centre. United Nations Educational, Scientific and Cultural Organization. Retrieved 17 July 2016.
  3. ^ "معنی لوت | فرهنگ فارسی معین". www.vajehyab.com. Retrieved 4 February 2023.
  4. ^ "معنی لوت | لغت‌نامه دهخدا". www.vajehyab.com. Retrieved 4 February 2023.
  5. ^ "معنی لوت | لغت‌نامه دهخدا". www.vajehyab.com. Retrieved 4 February 2023.
  6. ^ "کویر لوت - معنی در دیکشنری آبادیس".
  7. ^ "لوت - معنی در دیکشنری آبادیس".
  8. ^ Mildrexler, D.; M. Zhao; S. W. Running (October 2006). "Where Are the Hottest Spots on Earth?". EOS. 87 (43): 461, 467. doi:10.1002/eost.v87.43.
  9. ^ a b c Mildrexler, DJ; Zhao, M; Running, SW (2011). "Satellite Finds Highest Land Skin Temperatures on Earth". Bulletin of the American Meteorological Society. 92 (7): 855–860. Bibcode:2011BAMS...92..855M. doi:10.1175/2011BAMS3067.1.
  10. ^ a b c Oliver E. Allen; et al. (1980). Richard L. Scheffel; Susan J. Wernert (eds.). Natural Wonders of the World. The Reader's Digest Association, Inc. p. 117. ISBN 978-0-89577-087-5.
  11. ^ Wright, John W., ed. (2006). The New York Times Almanac (2007 ed.). New York, NY: Penguin Books. p. 456. ISBN 978-0-14-303820-7.
  12. ^ "Archaeologists tracing Bronze Age settlements in southeast Iran". Tehran Times. 18 September 2024. Archived from the original on 19 September 2024.
  13. ^ Eskandari, N; Mollasalehi, H (2017). "Prehistoric Settlement Trends on the West of Lut Desert, Southeastern Iran". Journal of Archaeological Studies. 8 (2): 1–15. doi:10.22059/jarcs.2017.61722.
  14. ^ "Satellites seek global hot spots". Christian Science Monitor. Retrieved 4 February 2023.
  15. ^ "MOD 11 - Land Surface Temperature and Emissivity". MODIS. NASA.
  16. ^ Wan, Zhengming (April 1999). "MODIS Land-Surface Temperature Algorithm Theoretical Basis Document" (PDF). MODIS. NASA. LST ATBD, Version 3.3.
  17. ^ a b Azarderakhsh, Marzi; Prakash, Satya; Zhao, Yunxia; AghaKouchak, Amir (2020). "Satellite-Based Analysis of Extreme Land Surface Temperatures and Diurnal Variability Across the Hottest Place on Earth". IEEE Geoscience and Remote Sensing Letters. 17 (12): 2025–2029. Bibcode:2020IGRSL..17.2025A. doi:10.1109/LGRS.2019.2962055.
  18. ^ "The desert biome". University of California Museum of Paleontology.
  19. ^ "Rare snow in the Atacama Desert: Image of the Day". NASA. 13 July 2011.
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