Using Seismic Investigation to Test the Interface between Two Pavement Layers

2021 ◽  
pp. 721-730
Author(s):  
J.-M. Simonin
Keyword(s):  
Seismic Investigation ◽  
Pavement Layers

Seismic investigation of the Faeroe basalts and their substratum

1995 ◽  
Vol 90 (1) ◽  
pp. 111-123 ◽  
Author(s):  
Liselotte Kiørboe ◽  
Steen Agerlin Petersen
Keyword(s):  
Seismic Investigation

Automatic detection of multiple pavement layers from GPR data

2008 ◽  
Vol 41 (2) ◽  
pp. 69-81 ◽  
Author(s):  
Samer Lahouar ◽  
Imad L. Al-Qadi
Keyword(s):  
Automatic Detection ◽  
Pavement Layers

A seismic investigation of crustal structure in the Western Transvaal*

1952 ◽  
Vol 42 (1) ◽  
pp. 53-80
Author(s):  
P. L. Willmore ◽  
A. L. Hales ◽  
P. G. Gane
Keyword(s):  
Crustal Structure ◽  
Intermediate Layer ◽  
Continuous Recording ◽  
Travel Times ◽  
Local Anomaly ◽  
Seismic Investigation ◽  
Regular Increase ◽  
Mohorovičić Discontinuity ◽  
Epicentral Region

Abstract Travel times are given as obtained from seismograms of the Witwatersrand earth tremors at distances up to 500 km. Five stations of several types were operated, which were moved as required. One method used continuous recording for a few hours daily; another used a triggering technique operated by radio from Johannesburg, where a network of six stations permitted the focus of each tremor to be located in time and place. Readings from the 200 seismograms obtained give velocities V1 = 6.09 km/sec. and Vn = 8.27 km/sec. for the P1 and Pn phases, and v1 = 3.68 km/sec., vn = 4.83 km/sec., for the corresponding S phases. Simply interpreted, these lead to a depth of 36 km. to the Mohorovičić discontinuity, including 5 km. of sediments confined to the epicentral region. There is evidence of a phase corresponding to an intermediate layer (the inclusion of which brings the total depth to 39 km.), but the data can also be interpreted to imply a regular increase of velocity with depth in the upper layer, as the presence of a local anomaly.

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