An airborne magnetic survey is the predominant method of remotely collecting geophysical data using a specially modified aircraft outfitted with magnetometers to fly a grid pattern over a targeted area. Airborne magnetic surveys are an effective geological exploration technique to acquire gridded data describing the magnetic anomaly caused by variations in earth materials and structure. … Read more
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Electromagnetic or VLF-EM surveying
The acquisition of Airborne magnetic data is the first step in the exploration process, providing geologists with detailed mapping of magnetic field and anomalies. The magnetic data is then interpreted by Geophysical consultants to further pinpoint areas of interest to continue the exploration process. Aeromagnetic surveys acquire the data necessary to create geophysical maps, and … Read more
Gravity surveying is the process of measuring the local gravitational field of the Earth. Airborne gravity is the process of measuring and mapping these changes in the gravity field with an airborne gravimeter on a helicopter or an aircraft. It involves using ultra-sensitive equipment, called a gravimeter, to look at the structure density of rock … Read more
Exploration geophysics is used as a means of acquiring quality data to study geological variations within specific areas of the Earth’s crust. The information gathered during a geophysical survey aids in the production of geophysical maps, which are utilized in the prospecting stage for mineral and hydrocarbon exploration. The process of exploration geophysics commonly employs … Read more
In terms of conducting geophysical surveys, gamma spectrometry or airborne radiometric surveys can be employed as a means of detecting gamma rays or natural radioactive emanations. This detectable radiation comes from the decaying of some of the radioactive natural elements occurring in the Earth. For geological mapping, three elements are most diagnostically useful: potassium, uranium … Read more
A qualified geophysical company is capable of providing a wide range of geophysical surveying services, though typically specialize in either ground or airborne acquisition. The capabilities of a geophysical company are contingent upon their years of survey experience within the field of geophysical exploration as well as their dedication to quality QA/QC and good field … Read more
VLF-EM surveying is a geophysical technique using Very Low Frequency radio transmissions. The continuous, high power, low frequency electromagnetic transmission ranges from 3 kHz to 24 kHz. When the waves come in contact with a conductive material in the subsurface, they generate a secondary electromagnetic field around it. These instruments monitor a number of different … Read more
An airborne magnetic survey is the predominant method of remotely collecting geophysical data using a specially modified aircraft outfitted with magnetometers to fly a grid pattern over a targeted area. Airborne magnetic surveys are an effective geological exploration technique to acquire gridded data describing the magnetic anomaly caused by variations in earth materials and structure. … Read more
Airborne magnetic geophysical surveys or aeromagnetic surveys are one of the most commonly employed geophysical survey methods being practiced today. Aeromagnetic surveys are considered a primary and essential survey technology ]and are typically flown in conjunction with other survey technologies.An airborne magnetic survey is able to measure the earth’s magnetic fields from the air. Variations … Read more
