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Detection of Subsurface Cavities by Surface Remote Sensing Techniques

L. S. FountainT. E. OwenF. X. Herzig

出版	Federal Highway Administration, 1975
URL	http://books.google.com.hk/books?id=LDVgcOKr_owC&hl=&source=gbs_api

註釋

The research is part of a program underway to evaluate remote sensing instrumentation and methods for locating subsurface cavities that can cause serious highway construction and maintenance problems. Three methods of subsurface cavity detection based on different geophysical techniques were experimentally evaluated, including ground-penetrating radar, gravity profiling, and earth resistivity profiling. Tests were conducted at three sites having different geological environments. Verification tests showed all methods to be capable of locating air-filled cavities.