A General Introduction to Airborne Magnetic Surveys
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.
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?
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.
are also taking advantage of the survey technology to identify different
deposits of non-magnetic commodities that carry value such as petroleum and
A respected survey company will provide a general introduction to
airborne magnetic surveys and show you how they can benefit your company today.