seif dune

seif dune
   A large, sharp-crested, elongated, longitudinal (linear) dune or chain of sand dunes, oriented parallel, rather than transverse (perpendicular), to the prevailing wind. If unmodified, the crest, in profile, commonly consists of a succession of curved slip faces produced by strong, but infrequent cross winds. A seif dune may be as much as 200 m high and from 400 m to more than 100 km long.
   Compare: longitudinal dune.
   GG & HP

Glossary of landform and geologic terms. 2013.

Look at other dictionaries:

  • seif dune — noun a long and tall sand dune with a sharp crest; common in the Sahara • Hypernyms: ↑dune, ↑sand dune …   Useful english dictionary

  • seif-dune — /ˈseɪf djun/ (say sayf dyoohn) noun (in deserts, especially the Sahara) a ridge of blown sand, sometimes several kilometres long, stretching across the desert in the direction of the prevailing wind. {seif from Arabic: sword} …   Australian English dictionary

  • Seif — ist der Familienname folgender Personen: Karl Winfried Seif (* 1943), deutscher Politiker (CDU) Leonhard Seif (1866–1949), deutscher Neurologe, Erziehungsberater und Individualpsychologe Theodor Seif (1894–1939), österreichischer… …   Deutsch Wikipedia

  • Dune — For other uses, see Dune (disambiguation). Erg Chebbi, Morocco …   Wikipedia

  • dune —    A low mound, ridge, bank or hill of loose, windblown, subaerially deposited granular material (generally sand), either barren and capable of movement from place to place, or covered and stabilized with vegetation, but retaining its… …   Glossary of landform and geologic terms

  • seif — n. (in full seif dune) a sand dune in the form of a long narrow ridge. Etymology: Arab. saif sword (from its shape) …   Useful english dictionary

  • seif — [sāf, sīf] n. an immense, long, curving, ridgelike sand dune, as of the Sahara …   English World dictionary

  • seif — /sayf, suyf/, n. a long narrow sand dune parallel to the prevailing wind direction. [ < Ar sayf sword] * * * ▪ sand dune       a long, narrow sand dune or chain of dunes, generally oriented in a direction parallel to the prevailing wind or in a… …   Universalium

  • seif — noun a) A sand dune that elongates parallel to the prevailing wind. b) thirst Syn: longitudinal dune …   Wiktionary

  • seif —   a sand dune found in desert areas where the alignment is with the prevailing wind direction …   Geography glossary