Definition of yardang in English:

yardang

Pronunciation /ˈyärˌdäNG/ /ˈjɑrˌdɑŋ/

noun

  • A sharp irregular ridge of compact sand lying in the direction of the prevailing wind in exposed desert regions, formed by the wind erosion of adjacent material that is less resistant.

    ‘Linear erosional features (called yardangs) found in deserts are the result of long-term erosion of wind blowing in a consistent direction.’
    • ‘I stumbled upon a yardang - a rock ridge feature caused by wind and water erosion.’
    • ‘Due to the hard climatic conditions of the yardang region in the Lut Desert, not much information about land surface temperatures of this region, one of the extremely arid cli-matic zones of Iran, has been extracted.’
    • ‘Sculpted landforms, called yardangs, are up to tens of meters high and kilometers long and are forms that have been streamlined by desert winds.’
    • ‘In this image, there is evidence for a period of erosion when winds scoured the surface at nearly right angles to the prominent yardang direction.’
    • ‘A yardang is a fin like structure that points in the direction of the wind.’
    • ‘These hills are then shaped into the typical aerodynamic shape of a yardang, while the troughs separating the yardangs usually have a U-shaped cross section.’
    • ‘The Bronze Age mounds of Sistan, also strongly reduced in their size by aeolian action, rise on the takyr as isolated pillars, not unlike the yardangs around them.’
    • ‘This pic, taken from the S Wadi, conveys the impression that the Sphinx's body was sculpted from the bedrock, in a quarry, and that it wasn't a yardang to start with.’
    • ‘The varying concentration and shape of the yardangs in this area may be controlled by the motion of winds around these topographic features.’
    • ‘The most classic yardang shape is that of the inverted boat hull; each of these streamlined hills provides a near-textbook example.’
    • ‘The remote corridors between the yardangs are used by heroin smugglers on their way from Afghanistan and Pakistan to Turkey; and we had a very difficult time getting permission to travel there.’
    • ‘In 1939, the yardangs in southwestern Egypt were termed ‘mud-lions’ by British explorer Ralph Bagnold.’
    • ‘The Sphinx-shapers may have started with a limestone yardang near the edge of the Giza plateau, El-Baz suggested.’
    • ‘Now that we have some visuals of what a dune, yardang, a loess are we can go into the actual definitions.’
    • ‘Aberrant type of lakebed yardangs on lee side of Ein El ShurfaHill, Kharga Depression, Egypt 96.’
    • ‘Dark intermittent stream channels are likewise visible as they pass across the yardangs on the radar image.’
    • ‘Figure 8-9.- Eolian deflation basin near the Big Dune Trail parking lot, with a yardang in the center.’
    • ‘Five-sided symmetrical ventifacts or yardangs appear to be totally nonexistent on Earth and Mars.’
    • ‘The direction of the yardangs is from southeast to northwest indicating the prevalent wind direction.’

Origin

Early 20th century from Turkish, ablative of yar ‘steep bank’.