The Results of Seismic Investigations Along Geotraverses

Abstract

The Research and Production Association (Neftegeofizika) of the USSR Ministry of Geology has used seismic methods to study the structure of the Earth’s crust and the upper mantle since 1971. The investigations have been carried out along the traverses at a distance of 500–4500 km. The location of the traverses is shown in Figs. 2, 3, and 5. The methods of investigation include registration of three components (one vertical and two horizontal) of the seismic wave field generated by major production explosions, trotyl explosions of 4–5 tons, and earthquakes. The distances between sites of major explosions vary from 600–1000 km, and 50–100 km between sites of smaller explosions; station spacing varied from 3–10 km; the registered frequency range was 1.0–25 Hz. Computer processing was widely used for revealing and correlating seismic waves.