Abstract
The potential submarine geologic hazards were distinguished and categorized at the entrance of the Pearl River Estuary in the northern South China Sea, based upon the analysis of side scan sonar and sub-bottom profiler surveying data of about 2500 km long, in an area about 2000 km2 around the Wanshan Archipelago. The data obtained in the survey has the highest spatial resolution by far, which could reveal more detailed distributions and characteristics of the geologic hazards than before. In the study region, three paleo-channels that were buried about 10–30 m below the seabed were found; more than 10 shallow gas areas were discovered. The sand waves found in the region were generally small and located near the islands, and twenty pockmarks found on the seabed were mostly concentrated to north of Zhuzhou island. There are also many man-made obstacles in the region, such as wreckages, pipeline, etc. In this paper we provide a detailed distribution map of the submarine geologic hazards in this region for the first time, and discuss their formation and harmfulness, which will provide a scientific basis for marine engineering construction, marine geologic disaster prevention and mitigation.
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References
Bao, C. W., 1995. Buried ancient channels and deltas in the Zhujiang river mouth shelf area. Marine Geology & Quaternary Geology, 15 (2): 25–34.
Bao, C. W., and Jiang, Y. K., 1999. Types and characteristics of potential subbottom geological hazards in nearshore zone of China. Tropic Oceanology, 18 (3): 24–31.
Bouma, A., Sangrey, D., Coleman, J., Prior, D., Trippet, A., Dunlap, W., and Hooper, J., 1981. Offshore Geologic Hazards. AAPG Education Course Note Series, Vol. 18, 485pp.
Chen, J. R., 1996. An analysis on geohazardous factors in the Zhujiang river mouth basin of South China Sea. Tropic Oceanology, 15 (1): 9–16.
Chen, J. R., and Yang, M. Z., 1996. Research on the potential factors for geologic hazards in South China Sea. Journal of Engineering Geology, 4 (3): 34–39.
Feng, W. K., Li, W. F., and Shi, Y. H., 1994a. Study on the seafloor sandwaves in the northern South China Sea. Acta Oceanologica Sinica, 16 (6): 92–99.
Feng, W. K., Shi, Y. H., and Chen, L. H., 1994b. Research for seafloor landslide stability on the outer continental shelf and the upper continental slop in the northern South China Sea. Marine Geology & Quaternary Geology, 14 (2): 51–94.
Feng, W. K., Xia, Z., and Li, X. R., 1994c. Study on the stability of the seafloor sandwaves in the northern South China Sea. Geological Research of South China Sea, 1994 (s): 26–42.
Feng, Z. Q., Feng, W. K., and Xue, W. J., 1996. Geology Hazards and Evaluation of Submarine Engineering-Geological Conditions in North of South China Sea. Publishing House of HoHai University, Nanjing, 5–123.
Guangzhou Marine Geological Survey, 1990. Report of Engineering Geology Investigation in Zhujiangkou Basin of the South China Sea. 56-66.
Huang, Z. G., Li, P. R., Zhang, Z. Y., and Li, K. H., 1985. Characteristics of the Quaternary deposits in the Zhujiang Delta. Geological Review, 31 (2): 159–164.
Jin, X. L., 2007. The development of research in marine geophysics and acoustic technology foe submarine exploration. Progress in Geophysics, 22 (4): 1243–1249.
Kou, Y. Q., and Du, D. L., 1994. Sedimentary features of shallow ancient river channels on the northern shelf of the South China Sea. Acta Geologica Sinica, 68 (3): 268–277.
Liu, B. H., Ding, J. S., Pei, Y. L., Li, S. X., Gao, J. G., and Lv, J. F., 2005. Marine geophysical survey techniques and their applications to offshore engineering. Advances in Marine Science, 23 (3): 374–384.
Liu, L. J., Fu, M. Z., Li, J. G., Li, X. S., Chen, Y. L., and Gao, S., 2014a. Geologic hazards in the deep pipeline routing area of the Liwan 3-1 gas field in the South China Sea. Advances in Marine Science, 32 (2): 162–174.
Liu, S. Q., and Mo, J., 1997. Some basic subjects on study of marine geology hazards. Marine Geology & Quaternary Geology, 17 (4): 36–40.
Liu, S. Q., Liu, X. Q., Wang, S. J., and Guo, Y. G., 2000. Kinds of hazardous geology and division in South China Sea. The Chinese Journal of Geological Hazard and Control, 11 (4): 39–44.
Liu, X. D., Fu, M. Z., Li, P., Gao, S., and Liu, L. J., 2014b. Types and characteristics of potential geohazards in the sea area near Nanpu-Caofeidian, Hebei Province. Acta Oceanologica Sinica, 36 (7): 90–98 (in Chinese).
Liu, X. Q., Liu, S. Q., Wang, S. J., and Guo, Y. G., 2002. Preliminary study on the distribution of hazardous geology in South China Sea and its formation regulations. The Chinese Journal of Geological Hazard and Control, 13 (1): 12–16.
Liu, Y. X., 1981. Analysis on the Crack Structure in the Coastland of South China. Earthquake Press, Beijing, 21–30.
Qiu, J. D., Liu, J., Kong, X. H., Zhang, Y., Yue, B. J., Zhang, J. Q., and Sun, L. S., 2012. Marine geo-hazaeds in the coastal and offshore area of southern Shandong Peninsula. Marine Geology & Quaternary Geology, 32 (1): 27–33.
Sun, J., Zhan, W. H., Jia, J. Y., and Qiu, X. L., 2010. Hazardous geology and its relationship with environmental evolution in the Pearl River Estuary. Journal of Tropical Oceanography, 29 (1): 104–110.
Wang, H. P., Zhang, W., Li, C. L., and Wang, L., 2014. High resolution seismic identification of seafloor shallow geological hazards. Marine Sciences, 38 (7): 103–109.
Will, P. C., 2005. Sound Images of the Ocean in Research and Monitoring. Springer, Berlin, 3–6.
Wu, L. S., and Bao, C. W., 2000. Types and characteristics of potential subbottom geological hazards in the eastnorthern China Sea. Gresearch of Eological South China Sea, 12: 87–101.
Wu, S. G., and Chen, S. S., 2008. Submarine landslide and risk evaluation on its instability in the deepwater continental margin. GeoScience, 22 (3): 430–436.
Xia, Z., Zheng, T., and Pang, G. C., 1999. Features of submarine geological hazards in northern South China Sea. Tropic Oceanology, 18 (4): 91–95.
Yang, W. D., Zhang, Y. B., and Li, B., 2011. Types and characteristics deepwater geologic hazard in Qiongdongnan of the South China Sea. Offshore Oil, 31 (1): 1–6.
Zhan, W. H., and Sun, Z. X., 2001. A study on geological environment and hazards in Pearl River mouth islands and waters. Marine Geology & Quaternary Geology, 21 (4): 31–35.
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Zhang, Z., Wei, Z., He, H. et al. Potential submarine geologic hazards at the entrance of the Pearl River Estuary in the northern South China Sea. J. Ocean Univ. China 15, 606–612 (2016). https://doi.org/10.1007/s11802-016-2868-1
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DOI: https://doi.org/10.1007/s11802-016-2868-1