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Flashcards in Geophysics techniques Deck (6)
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1

What is resistivity most useful for?

Detecting buried features such as ditches and walls

2

How does resistivity work?

It investigates how well a site conducts electricity using probes

3

How far below the ground to the probes go during resistivity techniques?

Up to 20cm

4

What principle does Resistivity work off?

That the ground retains moisture and this affects its ability to conduct an electric current

5

Give 2 examples as to where Resistivity successfully identified buried features

Roman Villa in Peterborough- presence of walls and entire complex
Chester amphitheatre- second theatre found

6

What principle does magnetometry work off?

That the earth maintains a magnetic field which over time may develop abnomalities