Groundwater Exploration
2 -D Resistivity Imaging
Do not drill blind!
Perform a full scan Geophysical Survey and locate where the groundwater is before you drill. It's like an MRI for the earth!
Resistivity Imaging. What is it?
Resistivity imaging is the science of injecting voltage into the ground and measuring current. When this is accomplished using precision scientific instruments, you are able to find high and low resistive anomalies below ground surface. Groundwater would be a very low resistive anomaly.
Technology has advanced to a level that we are able to connect 84 electrodes together using a 1200 meter long cable. A computer directs the instrument to take various readings at different lengths of the survey line. Normally an operator is able to collect approximately 6000 data points in a single line survey. A single line survey can be 300 meters to 1.2 kilometers long. Penetration of survey is normally 15% to 25% the length of the survey line. Example a 1000 meter long survey line would collect data from 150 to 250 meters below grade surface.
Inversion
Once all data has been collected, it is downloaded into a computer and we process the data using Earth Imager 2D. This program puts the puzzle together and processes the data into a very visual and understandable 2 dimensional graph that clearly shows where the property may or may not produce groundwater.
All of our surveys are completed using the Advanced Geosciences Super Sting R8/ IP resistivity meter and data is processed using AGI EarthImager 2D inversion and modeling software
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