Mapping basement magnetization zones from aeromagnetic data in the San Juan Basin, New Mexico

The application of the Signum transform to the interpretation of magnetic anomalies due to prismatic bodies

“…In Figure 1 we compare three filters, namely the total horizontal derivative (THDR, Cordell and Grauch, 1985), the normalized maximum horizontal gradient amplitude (TDX, Cooper and Cowan, 2006), and the tilt angle of the total horizontal gradient (TAHG, Ferreira et al, 2013), with the Signum transforms of the first and the second vertical derivative. We use a model composed of two dykes with a = 100 m (for both), and h = 100 m (left) and h = 500 m (right).…”

Application of curvatures and Poisson’s relation to airborne gravity gradient data in oil exploration

“…Evjen (1936) recognized the advantages of using the vertical gradient of gravity data. Cordell and Grauch (1985) developed the horizontal derivative method to locate the horizontal position of density boundaries. Hansen et al (1987) used the horizontal gradient magnitude and the analytic signal for interpreting edges and dips in gravity anomaly data.…”

Contribution de la gravimétrie à l'étude de la structure de la plaine de Mornag (nord est de la Tunisie): implications hydrogéologiques

“…L'intérêt de la transformation de ce type de données a été évoqué depuis longtemps (Gerard & Griveau, 1972;Cordell & Grauch, 1982). Le succès de l'application de ces traitements a été démontré par de nombreuses études antérieures (Debeglia & Weber, 1985;Everaets & Mansy, 2001;Jaffal et al, 2003;Chennouf et al, 2004;Kattach et al, 2004Kattach et al, , 2006Najine et al, 2006).…”