RECENT DEVELOPMENTS IN GEOPHYSICS
Abstract
Measuring the components of the earth's geomagnetic field by the proton resonance method; Using natural electromagnetic variations for in vestigation of the earth's upper layers; Plotting magnetotelluric sounding curves according to recordings of short-period variations in the natural geomagnetic field; Calculation of the low-frequency dipole field in the far zone; Some func tions of the complex argument which appear in the low-frequency field theory; Approximate formula for a dipole field above a horizontal lamellar structure with a poorly conducting base; Direc tional electromagnetic sounding; Comparison of the induction method with the dipole electromag netic method on a thin conducting plate (model); Representation of observational data of alter nating-current prospecting as an apparent specific resistance; The use of low- frequency alternating current in electrical profiling and sounding; Methods of calculating a point-source field in the presence of a vertical bed; Influence of the earth-air boundary of the electrical field of a polarized sphere; Low- frequency NCHMU equipment for prospecting; Concerning the vertical torsion balance theory; Plotting wave-front charts with an arbitrary law of change in seismic velocity with depth.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 22, 1963
- Accession Number
- AD0408825
Entities
Organizations
- Joint Publications Research Service