Download Free Man Induced Land Subsidence Book in PDF and EPUB Free Download. You can read online Man Induced Land Subsidence and write the review.

Land subsidence has been caused by man's activities in at least 37 of the 50 states of the United States and affects more than 40,000 square kilometres in this country alone. Data from a few sites where economic impact is documented suggest a total annual cost to the nation of more than $100 million; worldwide, the total economic impact is astounding and growing. These nine papers constitute a major contribution to measuring and understanding this problem and are arranged in 3 categories: fluid withdrawal from porous media; drainage of organic soil; and collapse into man-made and natural cavities.
Land subsidence (LS) is a gradual settling or sudden sinking of the Earth's surface owing to subsurface movement of earth materials. More than 80% of the identified LS in the nation is due to our exploitation of underground water (UW). This report illustrates the 3 basic mechanisms by which human influence on UW causes land subsidence: compaction of aquifer systems, dewatering of organic soils, and mass wasting through dissolution and collapse of susceptible earth materials. Also examines the role that water-management groups play in mitigating subsidence damages. Color and B&W photos, maps, and drawings.