that sinking feeling

15

Upload: ginger

Post on 24-Feb-2016

68 views

Category:

Documents


0 download

DESCRIPTION

That Sinking Feeling. Subsidence. The sinking or settling of land to a lower level in response to various natural and man-caused factors, for example: ( 1) earth movements ( 2) lowering of fluid pressure (or lowering of ground water level ) - PowerPoint PPT Presentation

TRANSCRIPT

Page 1: That Sinking Feeling
Page 2: That Sinking Feeling
Page 3: That Sinking Feeling
Page 4: That Sinking Feeling
Deuel, Maria
The Neversink Pit is a natural attraction for cave explorers. (Alabama)
Page 5: That Sinking Feeling

That Sinking Feeling

Page 6: That Sinking Feeling

Subsidence The sinking or settling of land to a lower level in response to various natural and man-caused factors, for example: (1) earth movements (2) lowering of fluid pressure (or lowering of ground water level) (3) removal of underlying supporting materials by mining or solution of solids, either artificially or from natural causes (4) compaction caused by wetting (Hydrocompaction) (5) oxidation of organic matter in soils (6) added load on the land surface.

Page 7: That Sinking Feeling
Page 8: That Sinking Feeling
Page 9: That Sinking Feeling
Page 10: That Sinking Feeling

Land subsidence in California, due to groundwater

withdrawal. Fissures near Lucerne Lake (dry) in San Bernardino

County, Mojave Desert,

California.

Page 11: That Sinking Feeling
Page 12: That Sinking Feeling

Reading Contour Maps

Page 13: That Sinking Feeling
Page 14: That Sinking Feeling
Page 15: That Sinking Feeling