Duin: Verskil tussen weergawes
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Lyn 2:
[[Lêer:Libya 4608 Idehan Ubari Dunes Luca Galuzzi 2007.jpg|thumb|Duine in die Sahara, in die Fezzan-gebied van [[Libië]].]]
In [[aardrykskunde]] is 'n '''duin''' 'n sandheuwel wat deur [[eoliese proses]]se gebou word of die vloei van water.<ref name="oxford">{{cite book |last1=first edited by Fowler |first1=H.W. |last2=Fowler |first2=F.G. |editor1-last=Sykes |editor1-first=J.B. |title=The Concise Oxford Dictionary of Current English |date=1984 |publisher=Clarendon Press |location=Oxford |isbn=978-0-19-861132-5 |edition=7th}}</ref> Duine bestaan in verskeie vorms en groottes, afhangende van hulle wisselwerking met die [[wind]]. Meeste duine is langer aan die kant wat die wind trotseer en waar sand teen die duin op beweeg word. 'n Duineveld is 'n area wat deur baie duine bedek word.
Sommige kusgebiede het een of meer rye duine wat parallel met die [[kuslyn]] loop. In meeste sulke gevalle is die duine baie belangrik, siende dat hulle die land beskerm teen die moontlike teisteringe deur stormwinde wat van die see afkomstig is.
Lyn 8:
Duine word nie net langs die kuslyn gevind nie, maar ook op land, by droë en woestynagtige gebiede. Hulle word ook onder water gevorm deur die vloei van water, op die bodems van riviere, mondings en die seebodem.
Die moderne woord "dune" het in 1790 is Engels uit Frans gekom,<ref>{{Webaanhaling|url=http://www.dictionary.com/browse/dune|title=Dune—Define Dune at Dictionary.com|author=|date=|website=dictionary.com|accessdate=1 Mei 2018|deadurl=no|archiveurl=https://web.archive.org/web/20180501201547/http://www.dictionary.com/browse/dune|archivedate=1 Mei 2018|df=dmy-all}}</ref> wat op sy beurt afkomstig was van die Middel-Hollandse ''dūne''.<ref name="oxford"/>
== Duin beweging ==
Die sandmassas duine kan beide kante toe beweeg, afhangende van of die wind van onder of bo in kontak kom met die duin. As wind van bo af slaan, beweeg die sanddeeltjies eenkant. As sand van onder raak, beweeg sanddeeltjies windwaarts. Die spoelstroom van sand is groter as die windwaartse vloed. Verder, as die wind sanddeeltjies dra wanneer dit die duin slaan, sal die duin se sand meer sout dra as wanneer die wind die duin getref het sonder om sanddeeltjies te dra.<ref>{{Cite journal|last=Jiang|first=Hong|last2=Dun|first2=Hongchao|last3=Tong|first3=Ding|last4=Huang|first4=Ning|date=2017-04-15|title=Sand transportation and reverse patterns over leeward face of sand dune|url=http://www.sciencedirect.com/science/article/pii/S0169555X16302732|journal=Geomorphology|volume=283|pages=41–47|doi=10.1016/j.geomorph.2016.12.030}}</ref>
== Verwysings ==
{{Verwysings}}
== Verdere leesstof ==
* {{Cite book |author1=Ralph Lorenz |author2=James Zimbelman |title=Dune Worlds: How Wind-blown Sand Shapes Planetary Landscapes |publisher=Springer |year=2014 |isbn=978-3-540-89724-8}}
* {{cite book|editor= Anthony J. Parsons, A. D. Abrahams|title=Geomorphology of Desert Environments|year=2009|publisher=Springer|isbn=978-1-4020-5718-2}}
* {{cite book|last1=Pye|first1=Kenneth|last2=Tsoar|first2=Haim|title=Aeolian Sand and Sand Dunes|year=2009|publisher=Springer|isbn=978-3-540-85909-3}}
* {{Webaanhaling| url=http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=17168 | title=Nouakchott, Mauritania | publisher=NASA Earth Observatory| accessdate=2006-04-28 | deadurl=yes | archiveurl=https://web.archive.org/web/20060930235428/http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=17168 | archivedate=30 September 2006 | df=dmy-all }}
* V. Badescu, R. B. Cathcart and A. A. Bolonkin, "Sand Dune Fixation: a solar-powered Sahara seawater pipeline macroproject", in: ''Land Degradation & Development''; 19, (2008).
* {{Webaanhaling| url=http://pubs.usgs.gov/gip/deserts/dunes/ | title=Types of Dunes | publisher=USGS | accessdate=2010-10-06 }}
* {{Webaanhaling| url=http://www.agc.army.mil/research/products/desert_guide/lsmsheet/lspara.htm | title=Summary: Dunes, Parabolic | publisher=Desert Processes Working Group; Knowledge Sciences, Inc. | accessdate=2010-10-06 | deadurl=yes | archiveurl=https://web.archive.org/web/20101021072044/http://www.agc.army.mil/research/products/desert_guide/lsmsheet/lspara.htm | archivedate=21 Oktober 2010 | df=dmy-all }}
* {{Webaanhaling| url=http://www.csf-desertification.org/index.php/bibliotheque/publications-csfd/les-dossiers-du-csfd-english/doc_details/142-mainguet-monique-a-dumay-frederic-2011-fighting-wind-erosion- | title=Fighting wind erosion. One aspect of the combat against desertification | publisher=Les dossiers thématiques du CSFD | accessdate=2011-01-04 | deadurl=yes | archiveurl=https://web.archive.org/web/20110725212257/http://www.csf-desertification.org/index.php/bibliotheque/publications-csfd/les-dossiers-du-csfd-english/doc_details/142-mainguet-monique-a-dumay-frederic-2011-fighting-wind-erosion- | archivedate=25 Julie 2011 | df=dmy-all }}
== Eksterne skakels ==
{{Commonskat|Dunes}}
* [http://www.geography-site.co.uk/pages/physical/coastal/dunes.html Kus Sand Duine]
* [http://www.tec.army.mil/research/products/desert_guide/lpisheet/lpdunes1.htm Duine patroon identifisering, Amerikaanse leër]
* [https://www.lbk.ars.usda.gov/wewc/biblio/bar.htm Die Bibliografie van Eoliese Navorsing]
* [http://pubs.usgs.gov/gip/deserts/dunes/ USGS bladsy op duin tipes]
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