336
VELOCITIES OF WAVE PARTICLE.
pier or tower; and the third, where it is possible, but not necessary to conclude, that the determination is below the tenth, from some cause.
Station. | Velocities. | Method of Determination. | Distance from Seismic Vertical. | |
Feet per Second. | Geog. Miles. | |||
Polla | 12.836 | |mean 13.176 | Overthrow and projection | 3.45 |
,, | 13.176 | |||
Padula | 12.386 | |mean 12.896 | Overthrow and projection | 16.45 |
,, | 13.152 | |||
Certosa di St Bruno | 11.540 | Projection | 16.50 | |
Moliterno | 11.800 | Projection | 25.50 | |
Viscolione,near Saponara | 11.040 | Overthrow | 26.00 | |
Tramutola | 14.765 | Projection | 20.60 | |
Potenza | 12.255 | Fracture and overthrow | 15.00 | |
Monticchio | 11.757 | Projection | 23.50 | |
Barielle | 11.564 | Overthrow | 24.50 | |
Certosa, Vase of Gate, of the Prior's Garden | 21.230 | Projection | 16.50 | |
Saponara | 15.627 | Fracture and overthrow | 25.00 | |
Sarconi | 9.780 | Projection | 26.70 |
The mean velocity given, by the first group of eleven separate and independent determinations, is 12·366 feet per second. It is a little doubtful, (Part II. in loc.) whether the velocity at Tramutola, was not slightly increased, by some surface oscillation; reasons of sufficient weight however are assignable from conditions of formation alone for finding a high velocity at that place.
If we omit Tramutola, and deduce a mean velocity from the remaining ten terms, we obtain 12·039 feet per second;