The Issaouane Erg is located near the Ahaggar Mountains. It is part of a major dune field that extends from Issaouane Erg in the north to the Sudanese Erg in the south, flanked by the Libyan erg of Murzuq.[2] In the north, the Issaouane Erg ends at the Tinrhert Plateau and in the south at the Fadnoun Plateau.[3] To a large extent it follows the 500-m contour of the surrounding landscape, ergs mostly being confined to basins.[4][5]
Sand in the Issaouane Erg, below the level of the sand dunes, has accumulated to a depth of 20 to 30 meters.[6] It has barchan dunes as well as star dunes[3] of 300 to 430 meters high.[7] The presence of both barchan dunes (which form due to unidirectional winds) and star dunes (which form when winds from various directions deposit sand) "suggests that wind regimes have changed over time".[8] NASA's Earth Observatory notes all three types of erg dunes are present in the photos of the Issaouane Erg taken from the International Space Station: stationary mega dunes, which can take hundreds of thousands of years to form; mesoscale dunes (including the stardunes), which form on the mega dunes; and yet smaller ones which migrate over the bigger ones.[9] In the NASA images, the light-blue spots in the valleys between the dunes (which are red from iron oxide) are sabkhah, or salt flats, left after the evaporation of accumulated water.[10]
Cultural historyEdit
Neolithic artifacts, sculptures and paintings have been found in the Issouane Erg[11] from the Kiffian culture. Trans-Saharan mercantile routes passed through the region, The most popular of which connected Tripoli to Taghaza.
Natural resourcesEdit
The Issaouane Erg contains oil; the Tifernine oilfield is explored by the Algerian state oil company Sonatrach, which began developing the oilfield with foreign assistance,[12] including from Korea[13] and Spain (Repsol signed an agreement to invest and explore in 1990). The oilfield has been in production since late 1998.[14]
^Evans, David (2013). Andrew S. Goudie (ed.). Arid Land Geomorphology. Geomorphology: Critical Concepts in Geology. Vol. 4. Routledge. p. 22. ISBN9781136801501.
^Kenneth Pye, ed. (2008). "The Formation of Sand Seas and Dune Field". Aeolian Sand and Sand Dunes. Haim Tsoar. p. 158. ISBN9783540859109.
^Lancaster, Nicholas (2002). Geomorphology of desert dunes. Routledge. p. 202. ISBN978-0-415-06094-3.
issaouane, also, called, issaouane, irrararene, approximately, sand, algeria, portion, sahara, desert, located, issaouane, irrarareneergimage, nasa, 2005coordinates, 250countryalgeriaarea, total15, time, zoneutc, contents, topography, cultural, history, natura. The Issaouane Erg also called Issaouane N Irrararene 1 is an approximately 38 000 km2 erg sand sea in Algeria s portion of the Sahara desert located at 27 50 N 7 15 E 27 83 N 7 25 E 27 83 7 25 Issaouane Erg Issaouane N IrrarareneErgImage NASA 2005Coordinates 27 50 N 7 15 E 27 833 N 7 250 E 27 833 7 250CountryAlgeriaArea Total15 000 sq mi 38 000 km2 Time zoneUTC 1 CET Contents 1 Topography 2 Cultural history 3 Natural resources 4 See also 5 ReferencesTopography EditThe Issaouane Erg is located near the Ahaggar Mountains It is part of a major dune field that extends from Issaouane Erg in the north to the Sudanese Erg in the south flanked by the Libyan erg of Murzuq 2 In the north the Issaouane Erg ends at the Tinrhert Plateau and in the south at the Fadnoun Plateau 3 To a large extent it follows the 500 m contour of the surrounding landscape ergs mostly being confined to basins 4 5 Sand in the Issaouane Erg below the level of the sand dunes has accumulated to a depth of 20 to 30 meters 6 It has barchan dunes as well as star dunes 3 of 300 to 430 meters high 7 The presence of both barchan dunes which form due to unidirectional winds and star dunes which form when winds from various directions deposit sand suggests that wind regimes have changed over time 8 NASA s Earth Observatory notes all three types of erg dunes are present in the photos of the Issaouane Erg taken from the International Space Station stationary mega dunes which can take hundreds of thousands of years to form mesoscale dunes including the stardunes which form on the mega dunes and yet smaller ones which migrate over the bigger ones 9 In the NASA images the light blue spots in the valleys between the dunes which are red from iron oxide are sabkhah or salt flats left after the evaporation of accumulated water 10 Cultural history EditNeolithic artifacts sculptures and paintings have been found in the Issouane Erg 11 from the Kiffian culture Trans Saharan mercantile routes passed through the region The most popular of which connected Tripoli to Taghaza Natural resources EditThe Issaouane Erg contains oil the Tifernine oilfield is explored by the Algerian state oil company Sonatrach which began developing the oilfield with foreign assistance 12 including from Korea 13 and Spain Repsol signed an agreement to invest and explore in 1990 The oilfield has been in production since late 1998 14 See also EditGeography of Algeria List of ergsReferences Edit Dubief Jean 1999 L Ajjer Sahara central Karthala p 220 ISBN 9782865378968 Walton Kennet 2007 The Arid Zones Transaction Publishers p 67 ISBN 978 0 202 30928 6 a b Issaouane Erg Algeria Earth Observatory NASA Retrieved 2010 01 03 Evans David 2013 Andrew S Goudie ed Arid Land Geomorphology Geomorphology Critical Concepts in Geology Vol 4 Routledge p 22 ISBN 9781136801501 Kenneth Pye ed 2008 The Formation of Sand Seas and Dune Field Aeolian Sand and Sand Dunes Haim Tsoar p 158 ISBN 9783540859109 Lancaster Nicholas 2002 Geomorphology of desert dunes Routledge p 202 ISBN 978 0 415 06094 3 Lancaster Geomorphology 73 Bond Peter 2012 Exploring the Solar System John Wiley amp Sons p 78 ISBN 9781444351088 Dune types in the Issaouane Erg Eastern Algeria Earth Observatory NASA Retrieved 9 October 2015 McKinnon Mika 7 June 2015 The Shifting Sands Of The Sahara Are A Lesson In Dune Dynamics Io9 Retrieved 10 October 2015 Camps Gabriel 1974 Les civilisations prehistoriques de l Afrique du Nord et du Sahara Doin p 306 ISBN 978 2 7040 0030 2 Algeria Oil processing plant inaugurated in Sahara 1999 10 15 Retrieved 2010 01 03 Remarks by President Roh Moo hyun of the Republic of Korea at the Korea Algeria Business Forum Dynamic Korea 2006 03 12 Archived from the original on 2020 08 19 Retrieved 2010 01 03 Algeria Oilfield Profiles Repsol YPF Tifernine Tin Mesnaguene APS Review Gas Market Trends 2001 02 05 Retrieved 2010 01 03 Retrieved from https en wikipedia org w index php title Issaouane Erg amp oldid 1171612756, wikipedia, wiki, book, books, library,
