Translations:Dictionary:Multiple/1/en

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{{#category_index:M|multiple}}

FIG. M-18.Multiple types.

Seismic energy that has been reflected more than once. While virtually all seismic energy involves some multiples, the important distinction is between long-path and short-path multiples: a long-path multiple arrives as a distinct event whereas a short-path multiple arrives so soon after the primary that it merely adds tail to the primary (i.e., changes the waveshape).