Improved edge detection in potential field maps and graphical estimation of depth‐to‐the‐top

Earthworms; “multiscale” edges in the EGM96 global gravity field

“…However, it must be kept firmly in mind that the mathematical foundation upon which the spherical case rests at present is significantly shakier than that of the flat-earth wavelet. Any inferences from the spherical worms  such as the Lipschitz exponent and class of source singularity, or the graphical inversion techniques reported elsewhere in this volume (see Boschetti et al, 2000)  must be drawn with significant caution.…”

Improved edge detection and noise removal in gravity maps via the use of gravity gradients

“…The flanks on the side of the D z signal are responsible for the dextraT edges. The interpretation of the D z edges is complicated by the fact that such edges can be dsingleT, ddoubleT or dtripleT depending on the relative size and depth of the source as well as on the relative distance of adjacent sources (Boschetti et al, 2000). For example, for an extended source, the left flank of the D z signal due to the right boundary of the source may interfere with the right flank due to the left boundary.…”

“…Now the dextraT edges have been removed. Further discussion on the combined use of gravity and D z edges can be found in Boschetti et al (2000). Fig.…”

“…The wide dyke cuts across the thinner one. The effective location of the contacts between the dykes is a challenge for edge detection (Boschetti et al, 2000) and will be a measure of the detection quality. On the top left we have an isolated large body and in the center we see some smaller bodies.…”