The flat events are multiple reflections from the seafloor. [Applet source] [Application source] [Java documentation]

This HTML page imitates a miniature SEP reproducible research document. The underlying applet implements the four buttons underneath the figure. The View button displays the result for the reader's scrutiny. The Build button recomputes the result. The Info button offers the reader additional information about the underlying software. The Play button invites the reader to test alternative move out velocities. The Play button is not an essential part of an reproducible document but adds interactivity.

The image above shows the result of a seismic processing step: Normal Move Out maps hyperbolic events in time t to horizontal events in zero offset time:


where h is the horizontal offset and V the subsurface velocity.