Subsidence - Wikipedia
Subsidence is a general term for downward vertical movement of the Earth's surface, which can be caused by both natural processes and human activities. Subsidence involves little or no horizontal movement, [1] [2] which distinguishes it from slope movement. [3]
Problem Soil and Rock Hazards - Utah Geological Survey
Subsidence often causes earth fissures which are permanent, linear tension cracks in the ground that extend upward from the groundwater table. Subsurface erosion of soil or rock by groundwater flow that forms narrow voids. Piping can remove support of overlying soil and rock, resulting in …
Land Subsidence | U.S. Geological Survey - USGS.gov
2019年3月2日 · Land subsidence is a gradual settling or sudden sinking of the Earth’s surface owing to subsurface movement of earth materials. The principal causes of land subsidence are aquifer-system compaction, drainage of organic soils, underground mining, hydrocompaction, natural compaction, sinkholes, and thawing permafrost. Land...
Subsidence | Ground Movement, Soil Compaction & Land …
2024年12月27日 · Subsidence, sinking of the Earth’s surface in response to geologic or man-induced causes. When subsidence occurs in great belts, providing troughs for the accumulation of sediments, the resulting features are termed geosynclines; nonlinear subsidence produces basins and irregular depressions.
What is the difference between a sinkhole and land subsidence?
Sinkholes are just one of many forms of ground collapse, or subsidence. Land subsidence is a gradual settling or sudden sinking of the Earth’s surface owing to subsurface movement of earth materials.
Subsidence: What is it and how to prevent it - HomeOwners Alliance
Subsidence is a word dreaded by home owners and buyers alike. We look at what subsidence is, how to avoid it, how to fix it - and the implications it may have for the future sale of your home. What is subsidence? House subsidence risks: What are they? What are the signs of subsidence? Are all cracks in my house signs of subsidence?
What is subsidence? - NOAA's National Ocean Service
Subsidence - sinking of the ground because of underground material movement—is most often caused by the removal of water, oil, natural gas, or mineral resources out of the ground by pumping, fracking, or mining activities.
What is Subsidence? - WorldAtlas
2017年11月10日 · Subsidence is the downward motion of ground surface in relation to an entity like the sea level. In other words it can be described as the downward shift of the ground surface. Subsidence is an occurrence that affects residents, geologists, business owners, surveyors, and geotechnical engineers.
Liquefaction - Utah Geological Survey
Liquefaction may occur when water-saturated sandy soils are subjected to earthquake ground shaking. When soil liquefies, it loses strength and behaves as a viscous liquid (like quicksand) rather than as a solid.
Subsidence - an overview | ScienceDirect Topics
Subsidence refers to the downward vertical movement of the Earth's surface, which can be caused by natural geological factors or human activities such as the extraction of natural resources or land reclamation.