南海与周边海域表层塑料颗粒交换的拉格朗日示踪研究

doi:10.11978/2019118

Abstract

Abstract:

Plastics have caused serious pollution in the ocean, and become one of the marine environmental issues of concern to the international marine community. The South China Sea is a major area of marine plastic pollution. The areas around the South China Sea are major sources of plastic pollution, and previous studies have focused on the offshore environment. In this study, we discuss the exchange of plastic particles in the surface of the South China Sea and surrounding waters by ocean circulations. First, the particles were placed at the junction of the South China Sea and its adjacent seas, and were released at the initial time of every season Using Lagrangian particle tracing method, we analyzed the trajectories and final locations of the particles within one year after release. The results show that plastic particles enter the South China Sea mainly through the southern strait. The transport of particles at the same starting point varies a lot with season. During autumn and winter, most particles will enter the South China Sea and Java Sea, and little particles will be transported to the Pacific Ocean. However, only a few particles enter the South China Sea and Java Sea during spring and summer, while most of them are transported to the Pacific Ocean .The South China Sea current is mainly affected by monsoon and has significant seasonal characteristics. This research will help understand the impact of surface plastics around the South China Sea on the plastic pollutant in the South China Sea.

Key words: plastic, circulation, seasonal change, South China Sea

CLC Number:

MENG Zhao, LI Ning, GUAN Yuping, FENG Yang. Exchanges of surface plastic particles in the South China Sea through straits using Lagrangian method[J].Journal of Tropical Oceanography, 2020, 39(5): 109-116.

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References 22

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Exchanges of surface plastic particles in the South China Sea through straits using Lagrangian method

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