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Let us calculate the slope of the parabolas:
| |
(8) |

The slope at *m*=0 is
| |
(9) |

The distance between two adjacent hyperbolas when the sloth space is evenly sampled
is
| |
(10) |

Hence the slope of parabolas at *m*=0 is proportional to the distance
between hyperbolas passing through the corresponding points.
From Figure we can see that at higher times the slopes are nearly
the same (the lines appear to be parallel); this conclusion corresponds to the fact
that hyperbolas divide the gather quite evenly.

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Stanford Exploration Project

1/13/1998