Abstract
Refraction seismic data obtained from a sonobuoy (SB7) in the East China Sea shelf marginal ridge was processed and interpreted. Intercept times and layer velocities were used to set up a one-dimension depth-velocity model based on which a two-dimenssion depth-velocity crustal model was established through two-dimension ray-tracing. The computation results showed that the upper crustal depth-velocity model beneath lineSB7 is composed of four layers with primary wave velocities of 1.80–2.20, 2.85–2.90, 3.24–3.34 and 4.55–6.00 m/s respectively. Neighbouring reflection seismic data and data on the East China Sea (ECS) regional geology were used to study the relationship between the velocities and their formation ages and also the contact relationship between the velocity boundaries.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Cerveny, V., Psencik, I., 1983. Program Package SEIS83. Charles University, Prague. pp. 134–199.
Hirata, N., Kinoshita, H., Katao, H. et al., 1991. Report on DELP 1988 Cruises in the Okinawa Trough, Part III, Crustal structure of the Southern Okinawa Trough.Bull. Earthq. Res. Inst., Univ. Tokyo 66: 37–70.
Jin Xianglong, Tang Baojue, Zhuang Jiezao et al., 1986. Velocity Structure of Submarine Upper Crust in the East China Sea. Collection of Papers of Oceanologia et Limnologia Sinica, Science Press, Beijing, pp. 65–72. (in Chinese)
Lee, C. S., Shor, G. G., Jr. Bibee, L. D. et al., 1980. Okinawa Trough: Origin of a Back-arc Basin.Marine Geology 35: 219–241.
Leyden, R., Ewing, M. Murauchi, S., 1973. Sonobuoy Refraction Measurements in East China Sea.The American Association of Petroteum Geologlsts Bulletin 57(12): 2396–2403.
Ludwig, W. J., Murauchi, S. Den, N. et al. 1973. Structure of East China Sea—Western— Philippine Sea Margin off Southern Kyushu, Japan.Jour. Geophys. Research 78: 2526–2536.
Murauchi, S., Den, N., Asano, S. et al., 1968. Crustal Structure of the Philippine Sea.Jour. Geophys. Research.73: 3143–3171.
Author information
Authors and Affiliations
Additional information
Contribution No. 3259, from the Institute of Oceanology, Chinese Academy of Sciences.
Project 49376266 supported by NSFC.
Rights and permissions
About this article
Cite this article
Qing-yuan, L., Pu-zhi, Y. & Zuo-lin, C. Processing and interpretation of data from a sonobouy refraction seismic section in the East China Sea shelf marginal ridge. Chin. J. Ocean. Limnol. 16, 21–27 (1998). https://doi.org/10.1007/BF02848213
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02848213