Skip to Main Content


The plot of travel-time of a seismic event against horizontal distance is called the time-distance curve of that event. It will be assumed that the concept of this type of plotting is understood; but if this is not the case, the reader is strongly advised to master it before going on. In fact, we strongly recommend that all matters in these lessons be the subjects of group discussion until the ideas are firmly in hand.

Ex. 5: Assuming that the time-distance curves for the situations in Ex. 3 and Ex. 4 are straight lines and the earlier travel-times in both cases are each 1.035 sec, draw the associated time-distance curves.

Before continuing, we must now introduce some definitions and ideas which can be found in any elementary book on the Calculus and which we must employ in what follows. (See Griffin, Introduction to Mathematical Analysis.)

You do not currently have access to this chapter.

Figures & Tables





Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal