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Forensic Archaeology - Essay Example

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The increasing significance of this branch has caused for its implementation in various levels of criminology. There are different kinds of techniques adopting…
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Forensic Archaeology
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Download file to see previous pages Ground Penetrating Radar GRP) and Resistivity Mapping are the two popular techniques in this field.
Geographic survey conducted for forensic perspective has mainly two aspects. The first survey is carried out on the surface. For the second, at every survey geophysicist prepare ‘map’ of the sub-surface. There are different techniques used for this mapping process. Based on the measurement they collected from the survey, they constitute the ‘hot-spot,’ in terms of geophysics it is called anomalies. If any kind of extreme natural variations detect, it clearly stress that the presence of subsurface disturbance like graves may drawn in that locality.
Resistivity mapping: - In this method the presence of electrical materials of the subsurface is identifying by passing electricity through the ground. Wet soil passes electricity (I) more effortlessly than dry soil and hard rock. Practical case this method conducted by passing electricity between two electrodes and calculate the electrical potential (V) in this area. Electrical resistance (R) is find out by R= V/I.
When regarding the readings of this survey at particular intervals, make out a grid of readings. Different resistance readings will obtain from the same place based on the electrode array and electrode division. This survey is conducted frequently by raising the electrode separation. Various types of resistivity of electrode array are; Wenner array and pole-pole array.
Here ‘R’ is represented in ohms, ‘p’ is represented as in ohm meters and ‘a’ is represented as in meters. In archaeological mapping pole-pole array is commonly used than Wenner array because it gives simpler anomalies which help for identification of noisy environment easily than pole-pole array anomalies.
Some factors which cause potential for avoiding the resistivity of the ground includes buried body interruptions which take place while burying the body. This will cause fluctuations ...Download file to see next pagesRead More
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