Water from low‐permeability sediments and land subsidence
- 1 December 1965
- journal article
- research article
- Published by American Geophysical Union (AGU) in Water Resources Research
- Vol. 1 (4) , 563-576
- https://doi.org/10.1029/wr001i004p00563
Abstract
Seepage pressures are part of the neutral or nondeformative stresses acting in a groundwater basin. The reduction of these pressures gives rise to a stress transfer from neutral to effective. The increase in effective stresses is, exclusively responsible for measurable deformations of the land surface. The amount of land subsidence or groundwater recovery from compressible confining layers depends upon the specific storage of the strata and the average head change within them. Expressions for the specific storage are obtained from both consolidation theory and conservation principles of compressible flow. Average head changes are identified on a depth‐pressure diagram in terms of head changes in adjacent aquifers and are referred to as ‘effective‐pressure areas.’ The geometry of the effective‐pressure area is shown to depend upon the thickness of the compressible strata, the magnitude of artesian pressure decline, the manner in which the basin is developed, and time. These factors are embodied in equations that quantitatively describe the release of stored water from compressible confining layers resulting from their vertical compression in areas of land subsidence.This publication has 6 references indexed in Scilit:
- Land Subsidence Related to Decline of Artesian Pressure in the Ocala Limestone at Savannah, GeorgiaPublished by Geological Society of America ,2015
- Modification of the theory of leaky aquifersJournal of Geophysical Research, 1960
- Subsidence of the land surface in the Tulare‐Wasco (Delano) and Los Banos‐Kettleman City area, San Joaquin Valley, CaliforniaEOS, Transactions American Geophysical Union, 1956
- THE SETTLEMENT OF LONDON DUE TO UNDERDRAINAGE OF THE LONDON CLAY.Journal of the Institution of Civil Engineers, 1942
- On the flow of water in an elastic artesian aquiferEOS, Transactions American Geophysical Union, 1940
- The relation between the lowering of the Piezometric surface and the rate and duration of discharge of a well using ground‐water storageEOS, Transactions American Geophysical Union, 1935