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U.S. Department of Energy
Office of Scientific and Technical Information

Exploration geophysics of the shallow subsurface

Book ·
OSTI ID:5466150
The major emphasis of the book is on high-resolution techniques that can provide detailed images of the near surface. Exploration techniques are organized in order of decreasing resolution with refraction and reflection seismic methods discussed first, and electrical resistivity, gravity, and magnetic techniques presented at the end. After covering the fundamentals of seismic wave propagation in layered media, the author next discusses seismic refraction methods. Detailed derivations of the traveltime equations for one, two, and multiple horizontal and dipping layers are presented. The chapters ends with a short discussion of field procedures, and some examples of environmental and shallow engineering applications of the refraction method. The next chapter on reflection seismology derives traveltime equations for reflections from single and multiple horizontal and dipping interfaces. Electrical resistivity methods are covered in the following chapter starting with basic electrical concepts. This chapter discusses the electrical responses of three simple models: single and multiple horizontal layers and a vertical contact. The chapter ends with three pages devoted to a very cursory description of other electrical methods -- IP, SP, telluric, magnetotelluric, and EM. The last two chapters on gravity and magnetics are identical inform and depth of coverage. Fundamental concepts and relationships of gravitational and magnetic fields are followed by a discussion of measurement techniques and field procedures. Both chapters contain excellent summary sections on potential-field responses of simple geometric shapes.
OSTI ID:
5466150
Country of Publication:
United States
Language:
English