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Similarly, a pure *S*_{v} shear mode can be described by the curl of a vector
potential. To isolate the shear wave it is enough to apply a curl
operator to the displacement field.
| |
(3) |

For this 2-D implementation the wavefields are invariant in the
direction of the unit vector normal to the experiment plane ().
As a result, the only non vanishing component of will be in
the direction. Defining

and using the same approach used for P-P, results in the following
equation to describe the imaging condition for the P-S reflection coefficient
| |
(4) |

and for the S-P reflection coefficient
| |
(5) |

** Next:** S-S reflection coefficient
** Up:** IMAGING CONDITION
** Previous:** P-P reflection coefficient
Stanford Exploration Project

11/18/1997