No abstract

The data on the northeastern block of the survey base line 3-DV were processed applying head wave conversion algorithm. The depth range with refractors therein is 0.6-1.7 km. The boundary velocity of head P-waves varies within 5.1 km/s and 7.1 km/s along the line. The boundary velocity of head S-waves is 2.7 km/s to 4 km/s. The paper contains analysis of lateral distribution of the Poisson ratio. The Inyali-Debin megasynclinorium area is characterized by increased Poisson ratios (0.28-0.37) compared to the Ayan-Yuryakh anticlinorium (0.19-0.29) and Orotukan-Balygychan uplift (0.22-0.28) areas.