Geophysical methods

A summary of the innovations in geophysical uranium exploration methods was compiled and is shown in Table 2.3 (lAEA-NF-T-15 2013). The gamma ray spectro-metric methods were discussed in detail earlier. 

Summary of Innovations in Geophysical Methods for Uranium Exploration 

Radon Detecting buried U Instruments differentiating radon and thoron 

Electrical, electromagnetic. Mapping lithology, structure, High-resolution and deep penetrating 

Magnetic Mapping hthology, structure and alteration High-resolution airborne gradiometry systems 3D modeling 

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It is important to understand that any geophysical method which is successful at one site may or may not have the same success at another site. There are many variables associated with all geophysical techniques as presented in Table 6. Someone with the experience to know the limitations of each of the techniques should be consulted prior to developing a large geophysical reconnaissance program. 

Nyer, E.K. Innovative Biological Treatment of Contaminated Groundwater. In First National Outdoor Action Conference on Aquifer Restoration, Groundwater Monitoring, and Geophysical Methods, May, 1987. 

Repeating these calculations with different pairs of gx(x) we may increase the accuracy of the evaluation of h. Next, making use of the value of this component at any point, the mass m is evaluated. In the case when only the vertical component is known, the determination of the position of mass and its value is similar. Here it is appropriate to notice the following. Inasmuch as an arbitrary body, located at a large distance from an observation point p, creates a field, known always with some error, often it cannot be practically distinguished from that of an elementary particle, and for this reason we are able to determine only the product of volume and density, mass, but each of them remains unknown. It is the first illustration of the fact that the solution of the inverse problem in gravity, as well as in other geophysical methods, is an ill-posed one, because some parameters of a body... 

Certainly, the system of equations for the attraction field is much more complicated than that for the potential. Before we continue it may be appropriate to make the following comment. In all geophysical methods the fields, such as the particle displacement caused by elastic waves, the constant and time-varying electric... 

Conyers, L. B. (2004), Ground-Penetrating Radar for Archaeology - Geophysical Methods for Archaeology, AltaMira Press, Walnut Creek, CA. 

Laney, D. F., 1988, Hydrocarbon Recovery as Remediation of Vadose Zone Soil/Gas Contamination In Proceedings of the National Water Well Association Second National Outdoor Conference on Aquifer Restoration, Groundwater Monitoring and Geophysical Methods, Vol. Ill, Las Vegas, NV, May, pp. 1147-1171. 

Diem D, Kerfoot H, Ross B. 1988. Field evaluation of a soil-gas analysis method for detection of subsurface diesel fuel contamination Second national outdoor action conference on aquifer restoration, ground water monitoring and geophysical methods. National Water Well Association Dublin, OH. 

Perform a reconnaissance site investigation using exploratory sampling. This may include nondestructive geophysical methods and field screening tests to refine the conceptual model... 

Currently Available Geophysical Methods for Use in Hazardous Waste Site Investigations... 

Many of these problems can often be avoided by the use of an integrated approach combining contemporary geophysical methods to support traditional drilling procedures. 

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