The impact of artificial island construction on sedimentary characteristics and sediment transport in the Haikou Bay

Xiao Zheyu; Qi Hongshuai; Cai Feng; Liu Gen; Zhao Shaohua; Zhu Jun; Lei Gang; Yin Hang

doi:10.12284/hyxb2022001

Volume 44 Issue 3

Mar. 2022

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Xiao Zheyu，Qi Hongshuai，Cai Feng, et al. The impact of artificial island construction on sedimentary characteristics and sediment transport in the Haikou Bay[J]. Haiyang Xuebao，2022, 44(3)：137–146 doi: 10.12284/hyxb2022001

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The impact of artificial island construction on sedimentary characteristics and sediment transport in the Haikou Bay

doi: 10.12284/hyxb2022001

Xiao Zheyu^1
,,
Qi Hongshuai^{1, 2
,
,},
Cai Feng^{1, 2},
Liu Gen¹,
Zhao Shaohua^{1, 2},
Zhu Jun^{1, 2},
Lei Gang^{1, 2},
Yin Hang¹

1.
Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
2.
Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen 361005, China

Received Date: 2020-10-07
Rev Recd Date: 2021-02-17
Publish Date: 2022-03-18

Abstract

Abstract

In recent years, artificial islands have been widely constructed in coastal areas to quickly obtain high-quality land resources. However, the construction of artificial islands may exert substantial effects on the distribution patterns and transport processes of offshore seabed sediments. To understand the changes and transport characteristics of sediments after the construction of artificial islands, this article focuses on the impact of Nanhaimingzhu (NHMZ) artificial island on the properties and distribution of offshore seabed sediments in the Haikou Bay. With surface sediments sampled respectively in the offshore of the Haikou Bay before and after the construction of NHMZ artificial island, the changes in sediment characteristics were analyzed. The impact of NHMZ artificial island on the surface sediments properties and transport trend in the Haikou Bay was discussed with sedimentary dynamic and grain size trends analysis. The results showed that the surface sediment properties changed significantly after the construction of NHMZ artificial island, with the fine-grained sediment composition increased, grain size decreased and the sorting worsen. It was found that the weakening of sedimentary dynamic conditions in the Haikou Bay caused by NHMZ artificial island was an important factor for the changes in seabed surface sediments grain size and the trend of sediment transport.
- artificial island,
- surface sediment,
- grain size trends analysis,
- sedimentary characteristics,
- Haikou Bay

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