A General Introduction to Airborne Magnetic Surveys

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A General Introduction to Airborne Magnetic Surveys

 
Airborne magnetic surveys are an important geophysical prospecting tool for many junior mining and mineral exploration companies. These surveys make it possible to gather detailed information about the presence of various magnetic and non-magnetic materials in the Earth’s crust over a large geographical area. This type of survey is cost-effective, safe and time efficient because of the large areas of land that can be covered.
 
Magnetometers are attached to a small airplane or helicopter, which flies pre-planned survey lines over the survey area, and take readings that show differences in magnetic fields. Technological improvements in magnetometers and other magnetic sensors have made it possible to accurately acquire data relative to these magnetic fields from the height of the aircraft.
 
Regional surveys are completed at higher altitudes and at wider line spacing intervals. These surveys provide more general information about the magnetic fields over a larger survey area, but provide clues about which areas may be of further interest. Detailed surveys are completed at lower altitudes and narrower line spacing intervals in order to acquire higher resolution data for better analysis of the area.  
 

Who Benefits from Airborne Magnetic Surveys?

 
Mining companies stand to benefit from advancements in airborne magnetic surveys. Many mining companies now rely on these types of surveys as the first stage of prospecting and to accurately find new areas for mineral exploration projects. The sensors on the aircraft are highly sensitive; they make it possible to determine the presence as well as the concentration of potential deposits of various magnetic ores from reasonably high altitudes while gathering readings over large areas.
 
Governments are also taking advantage of the survey technology to identify different deposits of non-magnetic commodities that carry value such as petroleum and coal.
 
A respected survey company will provide a general introduction to airborne magnetic surveys and show you how they can benefit your company today. 
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