dGB Earth Sciences - Dip-Steering

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Dip Steering Local dip and azimuth of each seismic sample

	The dip-steering plugin allows you to create and use "steering cubes". A steering cube contains at every sample position the local dip and azimuth of the seismic events. The cube is used for: a) structurally oriented filtering (e.g. dip-steered median filter) b) improving multi-trace attributes by extracting attribute input along reflectors (e.g. dip-steered similarity) c) to calculate some unique attributes (e.g. Dip & Azimuth, 3D-curvature, and variance of the dip).
	"Many softwares offer coherency and curvature attributes, but those obtained through OpendTect's dip-steering are really something different" --Guilherme Fernandes Vazques, Senior Geophysicist, Petrobras.

Examples

The Dip-steered median filter enhances laterally continuous events while randomly distributed noise is reduced. A major advantage of this filter above conventional dip filters is that edges are preserved. i.e. no filter-tails are generated.	Improve multi-trace attribute calculations. In this example faults are clearly better visible while using the Dip-steered similarity (above) then while using the non steered similarity (below).

Calculate unique attributes like 3D-curvature.

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Dip Steering