期刊
ENVIRONMENTAL GEOLOGY
卷 53, 期 5, 页码 1067-1077出版社
SPRINGER
DOI: 10.1007/s00254-007-0733-7
关键词
geophysical survey; gravimetry; magnetometry; GPR
A geophysical survey routine is proposed to detect underground cavities and dolines; it is based on the sequential application of magnetic, low-frequency ground penetrating radar (GPR) and microgravity techniques. A case study near Zaragoza (Ebro valley, Spain) demonstrates the applicability of these methods. The strong contrast of magnetic and electromagnetic properties (and to a lesser scale, of density) between the doline filling and the surrounding stratified Tertiary and Quaternary rocks allows the shape of filled cavities to be clearly outlined by these methods.
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