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sinkhole    音标拼音: [s'ɪŋkh,ol]
n. 阴沟的入口处,排水口,污水坑

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  • Sinkhole - Wikipedia
    A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer
  • What is a sinkhole? | U. S. Geological Survey - USGS. gov
    A sinkhole is a depression in the ground that has no natural external surface drainage Basically, this means that when it rains, all of the water stays inside the sinkhole and typically drains into the subsurface Sinkholes are most common in what geologists call, “ karst terrain ”
  • What Are Sinkholes and How Do They Form in Our Landscape
    What Are Sinkholes? A sinkhole is defined as a depression or hole in the ground caused by the collapse of a surface layer They are particularly common in regions with karst topography, where the bedrock is primarily limestone, gypsum, or salt that is easily dissolved by water
  • What Is a Sinkhole? Causes, Types, and Warning Signs
    A sinkhole is a depression or hole in the ground that forms when the surface layer loses its support from below This happens most often where water slowly dissolves underlying rock, creating hidden cavities that eventually cause the ground above to sag or collapse
  • Sinkhole Facts - Science Notes and Projects
    Get sinkhole facts in geology Learn about the different types of sinkholes, how they form, and how to repair or escape from one
  • What causes sinkholes, and why are they so dangerous?
    A sinkhole is a hole or deep depression in the ground that opens up when layers of certain types of rock – usually limestone, carbonate rock and salt beds – dissolve beneath the surface and
  • Sinkhole - National Geographic Society
    A sinkhole is a hole in the ground that forms when water dissolves surface rock Often, this surface rock is limestone, which is easily eroded, or worn away, by the movement of water
  • Sinkhole | Karst, Subsidence Collapse | Britannica
    Sinkhole, topographic depression formed when underlying limestone bedrock is dissolved by groundwater It is considered the most-fundamental structure of karst topography
  • What is a sinkhole? A geotechnical engineer explains
    Sinkholes happen when a cavity starts to grow underground It expands over time, but the soil on the surface is strong enough to hold together and form a “ceiling” over the cavity This ceiling
  • What causes a sinkhole to form? - National Geographic
    Sinkholes typically form when naturally acidic rainwater erodes underlying bedrock, creating damage beneath the surface Their formation is most common in easily erodible karst terrains with





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