Subsidence - Wikipedia Groundwater-related subsidence is the sinking of land resulting from groundwater extraction It is a growing problem in the developing world as cities increase in population and water use, without adequate pumping regulation and enforcement One estimate has 80% of serious land subsidence problems associated with the excessive extraction of groundwater, [7] making it a growing problem
Earth Fissures, Subsidence Karst in Arizona - AZGS Ground subsidence and resulting earth fissures impact more than 3,000 square miles in Arizona, including expanding areas of Phoenix and Tucson The cost to the Arizona economy is undetermined, but probably reaches the millions of dollars annually
Land Subsidence | U. S. Geological Survey - USGS. gov More than 80 percent of known land subsidence in the U S is a consequence of groundwater use, and is an often overlooked environmental consequence of our land and water-use practices Increasing land development threatens to exacerbate existing land-subsidence problems and initiate new ones Subsidence detection and mapping done by the USGS is needed to understand and manage our current and
What is subsidence? - NOAAs National Ocean Service What is subsidence? Land subsidence is a gradual settling or sudden sinking of the Earth’s surface This geodetic mark in Louisiana is anchored deep below the ground and was level with the ground when it was originally placed there, but now the ground around the mark has subsided
Subsidence | Ground Movement, Soil Compaction Land . . . 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
Land subsidence risk to infrastructure in US metropolises Land subsidence is a slow-moving hazard with adverse environmental and socioeconomic consequences worldwide While often considered solely a coastal hazard due to relative sea-level rise