Results from SGL's AIRGrav airborne gravity system over the Kauring airborne gravity test site

Abstract

A Sander Geophysics AIRGrav airborne gravity system was flown over Geoscience Australia's Kauring airborne gravity test site. Comparisons with both Geoscience Australia ground data and airborne gravity gradiometer data acquired by CGG using the Falcon system are presented. A series of band pass filters of the vertical gravity and vertical gravity gradient are employed to highlight performance at different wavelengths. While the Falcon system is best suited to the shortest wavelengths present at the Kauring test site, the AIRGrav system is also able to resolve relatively short wavelength features. This is due to noise reduction through the oversampling present with tight line spacing, combined with the unique characteristics of the AIRGrav system. Additional results with wider line spacing more commonly employed in airborne gravity surveys are shown using data acquired over both the Kauring test site and Papua New Guinea.