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
John Currie
Electromagnetic surveys are a type of geophysical exploration used to detect metallic and non-metallic minerals. The mining industry uses this surveying method as an economical means of prospecting to acquire useful data for an exploration project. While electromagnetic surveys can be done either by air or on the ground, airborne electromagnetic surveys (AEM) are comparably … 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
In the past several decades, airborne magnetic surveys have become a common means of acquiring data required for mineral and hydrocarbon exploration. The information uncovered during a magnetic survey is often the first phase of an exploration program to detect valuable minable magnetic ores such as kimberlites, chrome, and magnetic iron ores, as well as … Read more
Even though airborne surveys are a relatively low cost and efficient method of exploration, each survey must be as economically viable as possible in the grassroots stage of exploration. Therefore it is extremely important that your airborne survey is thoroughly planned and executed according to the predetermined survey plan. Integral to the planning process are … Read more
