Descent of air over a wide area, associated with a developing ridge or anticyclone. The subsidising air warms up, its relative humidity falls, and fine weather is the usual accompaniment of subsidence, though fog may occur under certain conditions.
Sinking or settling of the ground surface caused when soil or rock collapses into a void. Subsidence can be natural (a sinkhole) or human induced (due to underground mining or pumping of petroleum or water).
The process of sinking to a lower level. For example, the elevation of the land surface above an aquifer may sink or subside when groundwater is withdrawn from the underlying aquifer. Subsidence also refer to the process by which sediment in solution settles out.
Sinking of the earth's surface in response to geological or human-induced causes (e.g. mining, extraction of water or petroleum by wells). When subsidence occurs over large areas, the resulting features are termed geosynclines. Non-linear subsidence produces basins and irregular depressions. Subsidence may be counteracted by vertical accretion where sediment-loaded floodwater enters the area.
Downward or sinking motion of air in the atmosphere. Subsiding air warms due to compression. Increasing temperature and decreasing humidities are present in subsiding air. Subsidence results in a stable atmosphere inhibiting dispersion. Subsidence is generally associated with high atmospheric pressure.
Sinking air usually found around high pressure systems. Strong subsidence leads to very warm, dry air aloft, often appearing at high elevations first. It may arrive at day or night. Poor humidity recovery at higher elevations is usually a sign of strong subsidence.
Subsidence is the downward movement of the ground below a building. This may result in cracked walls, movement of walls and foundations and general instability of the building. If a potential client's house shows signs of subsidence, Insurers may be unable to quote.
The is the 'downward movement of the ground below a building'. Its may end up resulting in cracked walls or a general instability of the building. Insurers may be unable to quote if a clients house shows signs of this.
The loss of land elevation due to groundwater or petroleum withdrawal and natural settling. Groundwater withdrawal has been the most important contributor to subsidence for up to nine feet in the Galveston Bay region.
In geology, engineering, and surveying, subsidence is the motion of a surface (usually, the Earth's surface) as it shifts downward relative to a datum such as sea-level. The opposite of subsidence is uplift, which results in an increase in elevation. In meteorology, subsidence refers to the downward movement of air.
Subsidence is when the elevation of the ground drops slowly over time as water is pumped out and used for commercial and domestic uses. Since 1973 most of Harris County has fallen 1 foot with some areas falling as much as 5 feet. The Harris Galveston Subsidence District was created to monitor and address this problem and the rate of subsidence has been greatly reduced throughout most of the county. Back