Flygsand

Ullahau på Fårö
Sankt Laurentii kyrka, Skagen ("Den tilsandade kirke")
Flygsand över krönet på en sanddyn i Mojaveöknen

Flygsand är sand som förflyttats av vinden och ofta bildar sanddyner. Flygsand förekommer främst i ökenområden och i strandområden men förekommer också där vegetation inte förmår binda sanden.[1] Exempelvis kan flygsand förekomma i sandiga jordartsområden under delar av året då vegetationen inte binder marken. Även överbetning och torka kan leda till att flygsandsdrift aktiveras.[2] Sandkornen i flygsand är finkorniga, mindre än 1 mm, med en matt yta.[1][3]

Flygsand kan förorsaka skador på odlad mark och byggnader varför man ofta försöker bromsa utvecklingen av flygsandsfält genom att plantera växter[1] som strandråg och harris samt träd som tall för att binda sanden.

SGU skriver att flygsandsfält har "hög sårbarhet och hög genomsläpplighet".[4]

Platser

Flygsand finns runtom i världen. Således består större delen av Mauretanien av öken med flygsand.[5] I Sverige finns flygsand bland annat i naturreservatet Flygsandsfältet vid Dammsjön, som är ett exempel på flygsandsbildningar från tiden närmast efter det att inlandsisen smälte undan för omkring 9 000 år sedan.[6]

Se även

Källor

Noter

  1. ^ [a b c] ”flygesand” (på norskt bokmål). Store norske leksikon. 2020-09-16. http://snl.no/flygesand. Läst 20 mars 2022. 
  2. ^ ”flygsand - Uppslagsverk - NE.se”. www.ne.se. https://www.ne.se/uppslagsverk/encyklopedi/l%C3%A5ng/flygsand. Läst 20 mars 2022. 
  3. ^ Johan Nyberg, Bradley Goodfellow, Jonas Ising & Anna Hedenström (Mars 2020). Kustnära sedimentdynamik. Sveriges geologiska undersökning, SGU. 
  4. ^ ”Beskrivning av grundvattenförekomster”. www.sgu.se. https://www.sgu.se/anvandarstod-for-geologiska-fragor/vattenforvaltning-av-grundvatten/sgus-foreskrifter-om-kartlaggning-och-analys-sgu-fs-2013-1/inledande-kartlaggning/beskrivning-av-grundvattenforekomster/. Läst 20 mars 2022. 
  5. ^ Thuesen, Nils Petter (2022-01-17). ”Mauritania” (på norskt bokmål). Store norske leksikon. http://snl.no/Mauritania. Läst 20 mars 2022. 
  6. ^ ”Flygsandfältet vid Dammsjön”. www.lansstyrelsen.se. https://www.lansstyrelsen.se/dalarna/besoksmal/naturreservat/sater/flygsandfaltet-vid-dammsjon.html. Läst 20 mars 2022. 

Read other articles:

Animal studies

This article is about the academic discipline. For experimental studies using animals, see Animal testing. For other uses, see Animal studies (disambiguation). Painting titled Pastoral Study from the Smithsonian American Art Museum. Painting is by artist Albert Pinkham Ryder from 1897. Animal studies is a recently recognised field in which animals are studied in a variety of cross-disciplinary ways. Scholars who engage in animal studies may be formally trained in a number of diverse fields, i...

 

Penutup (daging sapi)

Penutup Daging Sapi atau lebih dikenal dengan nama Topside atau Round adalah bagian daging sapi yang terletak di bagian paha belakang sapi dan sudah mendekati area pantat sapi. Potongan daging sapi di bagian ini sangat tipis dan kurang lebih sangat liat. Selain itu bagian ini sangat kurang lemak sehingga jika dibakar atau dipanggang akan sangat lama melunakkannya. Biasanya daging ini digunakan untuk campuran daging pizza. lbsBagian daging sapiAtas Paha depan Daging iga Has dalam Has luar Tanj...

 

Creophilus maxillosus

Species of beetle Creophilus maxillosus Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Arthropoda Class: Insecta Order: Coleoptera Family: Staphylinidae Genus: Creophilus Species: C. maxillosus Binomial name Creophilus maxillosus(Linnaeus, 1758) Creophilus maxillosus, the hairy rove beetle, is a species of rove beetle. Physical characteristics and life cycle Larvae of the hairy rove beetle range from 20–25 millimetres (0.79–0.98 in) long and are cylindrica...

Coat of arms of Croatia

National coat of arms of the Republic of Croatia Coat of arms of CroatiaArmigerRepublic of CroatiaAdopted21 December 1990CrestA crown of five arms, as follows: Bleu Celeste a mullet of six points Or above a crescent argent; Azure two bars gules; Bleu Celeste three leopard heads caboshed Or; Azure a goat statant Or unguled and armed gules; Bleu Celeste on a fess gules fimbriated argent a marten Sable courant proper in chief a mullet of six points OrBlazonChequy of twenty-five gules and argent ...

 

River Music Experience

Music facility This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: River Music Experience – news · newspapers · books · scholar · JSTOR (January 2022) (Learn how and when to remove this template message) 41°31′17″N 90°34′31″W / 41.5213°N 90.5754°W / 41.5213; -90.5754 The Redst...

 

Junior Walker

American musical artist (1931–1995) Junior WalkerJunior Walker in 1966Background informationBirth nameAutry DeWalt MixonBorn(1931-06-14)June 14, 1931Blytheville, Arkansas, U.S.DiedNovember 23, 1995(1995-11-23) (aged 64)Battle Creek, MichiganGenresR&B, pop, rock, soul[1]Occupation(s)MusicianInstrument(s)Tenor saxophone, vocalsYears active1945–1995LabelsMotown, WhitfieldMusical artist Autry DeWalt Mixon Jr. (June 14, 1931 – November 23, 1995), known professionally as Juni...

St Helier, London

Housing estate in London Human settlement in EnglandSt HelierShops at Green Lane, St HelierSt HelierLocation within Greater LondonPopulation11,949 (2011 Census Sutton Ward)[1] 10,414 (2011 Census. Merton Ward)[2]OS grid referenceTQ265664London boroughMertonSuttonCeremonial countyGreater LondonRegionLondonCountryEnglandSovereign stateUnited KingdomPost townMORDENPostcode districtSM4Post townCARSHALTONPostcode districtSM5Dialling ...

 

It's Not You, It's Men

American TV series or program It's Not You, It's MenGenreTalk showPresented by Tyrese Gibson Rev Run Country of originUnited StatesOriginal languageEnglishNo. of seasons1No. of episodes8Original releaseNetworkOprah Winfrey NetworkReleaseJanuary 23 (2016-01-23) –March 12, 2016 (2016-03-12) It's Not You, It's Men is an American talk show series starring Tyrese Gibson and Rev Run that premiered on Oprah Winfrey Network on January 23, 2016.[1] The show features conve...

 

Residue number system

Multi-modular arithmetic This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article is missing information about many aspects of the subject (see the talk page). Please expand the article to include this information. Further details may exist on the talk page. (July 2018) This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Pleas...

Herd mentality

Tendency to adopt group beliefs and behaviors Herd mentality (also mob or pack mentality) describes how people can be influenced by the majority. Social psychologists study the related topics of group intelligence, crowd wisdom, groupthink, and deindividuation. History The idea of a group mind or mob behavior was first put forward by 19th-century social psychologists Gabriel Tarde and Gustave Le Bon. Herd behavior in human societies has also been studied by Sigmund Freud and Wilfred Trotter, ...

 

Citroën 2CV

Citroën 2CVInformasiProdusenCitroënMasa produksi1948–1990[1]PerakitanLevallois-Perret, Prancis,[2]Forest/Vorst, BelgiaLiège, Belgia Slough, Britania Raya Jeppener, Argentina (1960–1962), Buenos Aires, Argentina (1962–1980)Montevideo, Uruguay (Panel van & pick-up)Arica, Chili Mangualde, Portugal (1988–1990), Vigo, Spanyol (PSA Vigo Plant) Koper, YugoslaviaPerancangAndré LefèbvreFlaminio BertoniWalter BecchiaMarcel ChinonBodi & rangkaKelasmobil economiBentuk...

 

MysteryVibe

MysteryVibeType of businessPrivate companyFoundedLondon, United KingdomHeadquartersLondon, New York, Los AngelesArea servedUS, Canada, Mexico, Europe, Asia-Pacific, Latin-AmericaCEODr. Soumyadip RakshitKey peopleDr. Soumyadip Rakshit, Rob Weekly, Shanshan Xu, Prof. Prokar DasguptaIndustryMedical DevicesServicesSexual Health DevicesSubsidiariesMySexMDURLmysteryvibe.comLaunched2014; 9 years ago (2014)Current statusActive MysteryVibe is a British-American firm th...

Westmead Hospital

Hospital in New South Wales, AustraliaWestmead HospitalWestern Sydney Local Health DistrictWestmead HospitalGeographyLocationCnr Hawkesbury Road and Darcy Road, Westmead, New South Wales, AustraliaCoordinates33°48′16″S 150°59′19″E / 33.8045°S 150.9886°E / -33.8045; 150.9886OrganisationCare systemMedicare (Australia)FundingPublic hospitalTypeDistrict GeneralTeachingAffiliated universityUniversity of SydneyNetworkNSW HealthServicesEmergency departmentYesMajor...

 

Francesco Sassetti

Italian banker Francesco SassettiPortrait of Francesco Sassetti and his son Teodoro (c. 1488) by Domenico Ghirlandaio, Metropolitan Museum of Art, New YorkBornApril 9, 1421DiedMarch 9, 1490(1490-03-09) (aged 69)NationalityItalianOccupationBankerPredecessorGiovanni TornabuoniParentTommaso Sassetti (father) A detail from a fresco in the Sassetti Chapel, Santa Trinita, Florence. Sassetti is the second from right. Francesco Sassetti (9 March 1421 – April 1490[1]) was an Itali...

 

Severn Bridge Junction

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Severn Bridge Junction – news · newspapers · books · scholar · JSTOR (February 2012) (Learn how and when to remove this template message) Place in Shrewsbury, EnglandSevern Bridge JunctionSevern Bridge Junction as viewed from Shrewsbury CastleCoordinates: 52°4...

Чугун

У этого термина существуют и другие значения, см. Чугун (значения). Запрос «Сталистый чугун» перенаправляется сюда. На эту тему нужно создать отдельную статью. Чугу́н — сплав железа с углеродом (и другими элементами), в котором содержание углерода — не менее 2,14 % (т...

 

Virgin Radio Jakarta

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Virgin Radio Jakarta – news · newspapers · books · scholar · JSTOR (September 2016) (Learn how and when to remove this template message) Radio station in IndonesiaZ Radio JakartaIndonesiaFrequency99.9 MHzRDSZ99.9FMBrandingZ 99.9ProgrammingLanguage(s)Indonesian,...

 

High Caste

New Zealand-bred Thoroughbred racehorse High CasteHigh Caste and Ted BartleSireBulandshar (GB)GrandsireBlandfordDamThe BegumDamsireChief Ruler (GB)SexStallionFoaled1936CountryNew ZealandColourBayBreederA.J. McGovernOwnerHarry TancredTrainerJ.T. Jamieson (NZ)Record72: 35 (3 dh); 19,7[1]Earnings£35,547Major winsAscot Vale Stakes (1939)VRC Sires Produce Stakes (1939)Champagne Stakes (1939)Hobartville Stakes (1939)Rosehill Guineas (1939)Craven Plate (1939)Caulfield Guineas (1939)C.B.Fish...

収束型境界

収束型境界（しゅうそくがたきょうかい）とは、プレートテクトニクス理論において、プレート同士が接近している境界のこと。圧縮力が働いており、多くの場合片側のプレートがもう一方のプレートの下に沈み込んで海溝となる。 種類 衝突している2つ（3つ以上の場合もある）のプレートの比重に十分な差がある場合、重いプレートが下に、軽いプレートが上になる...

 

Rajavalvonta

Tähän artikkeliin tai osioon ei ole merkitty lähteitä, joten tiedot kannattaa tarkistaa muista tietolähteistä.Voit auttaa Wikipediaa lisäämällä artikkeliin tarkistettavissa olevia lähteitä ja merkitsemällä ne ohjeen mukaan. Rajavyöhykkeet ovat perinteinen tapa helpottaa rajavalvontaa. Suomalaista rajavyöhykemerkintää Sallassa, Venäjän vastaisella rajalla. Suomen ja Venäjän välisestä rajavyöhykkeestä ilmoittava kyltti järven rannalla. Rajavalvonta on valtion suoritt...

 

Strategi Solo vs Squad di Free Fire: Cara Menang Mudah!