Also, I chose this location because my sensors indicated that this area is located on a sufficient angle to protect us from the wave-path. ❋ A. C. Crispin (1990)
But that each wave-path should actually intersect the focus, and so enable its magnitude to be determined, would surely involve an approach to some law connecting the direction of a wave-path with the depth of its own origin, and no such law seems to be ascertainable. ❋ Charles Davison (1899)
The horizontal direction PL of the wave-path at any place P (Fig. 4), when produced backwards, must pass through the epicentre E; and the intersection of the directions at two places, P and Q, must therefore give the position of the epicentre. ❋ Charles Davison (1899)
He regarded such fissures, indeed, as "the sheet-anchor, as respects direction of wave-path, to the seismologist in the field," and at least three out of every four of his determinations of the direction were made by their means. ❋ Charles Davison (1899)
If the buildings are detached and large, simple and symmetrical in form, well built and not too much injured, the fissures in the walls should, he argued, occur along lines at right angles to the wave-path, whether that path be parallel or inclined to the principal axis of the building. ❋ Charles Davison (1899)
The direction EP gives the azimuth of the wave-path, or its direction along the surface of the earth. ❋ Charles Davison (1899)
Mallet argued that the direction of the wave-path FPA, or its equivalents, the horizontal direction EPL and the angle of emergence ❋ Charles Davison (1899)
The mean direction of the wave-path, as deduced from nine sets of fissures, none of which differs more than four degrees from the mean, is W. 2-1/2° S. and E. 2-1/2° N., which corresponds precisely with the direction of throw on the displaced portion of the dome. ❋ Charles Davison (1899)
_ -- Within the third isoseismal line Mallet made altogether 177 measurements of the direction of the wave-path at 78 places. ❋ Charles Davison (1899)
But the general course of the fissures, he urged, would be at right angles to the wave-path, and their inclination to the vertical should be equal to the angle of emergence. ❋ Charles Davison (1899)
These indicated a wave-path with a low angle of emergence coming from between north and north-north-west, or almost exactly in the line of meizoseismal band. ❋ Charles Davison (1899)
Both were fractured clean off at the level of the ground, the mortar being poor, and fell in directions that were accurately parallel, indicating a wave-path towards S. 39-1/2°E. ❋ Charles Davison (1899)
-- Diagram to illustrate wave-path and angle of emergence.] ❋ Charles Davison (1899)
