Quantifying  sediment  fluxes  from  continental  shelf  islands

Li Gaocong; Cai Tinglu; Li Zhiqiang; Gao Shu

doi:10.12284/hyxb2021077

Volume 43 Issue 12

Dec. 2021

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Li Gaocong，Cai Tinglu，Li Zhiqiang, et al. Quantifying sediment fluxes from continental shelf islands[J]. Haiyang Xuebao，2021, 43(12)：60–69 doi: 10.12284/hyxb2021077

Citation:

Li Gaocong，Cai Tinglu，Li Zhiqiang, et al. Quantifying sediment fluxes from continental shelf islands[J]. Haiyang Xuebao，2021, 43(12)：60–69 doi: 10.12284/hyxb2021077

Citation:

Li Gaocong，Cai Tinglu，Li Zhiqiang, et al. Quantifying sediment fluxes from continental shelf islands[J]. Haiyang Xuebao，2021, 43(12)：60–69 doi: 10.12284/hyxb2021077

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Quantifying sediment fluxes from continental shelf islands

doi: 10.12284/hyxb2021077

Li Gaocong^{1, 2
,},
Cai Tinglu³,
Li Zhiqiang^{1, 2},
Gao Shu^{4
,
,}

1.
Department of Marine Technology, Guangdong Ocean University, Zhanjiang 524088, China
2.
Guangdong Provincial Engineering and Technology Research Center of Marine Remote Sensing and Information Technology, Zhanjiang 524088, China
3.
Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
4.
State Key Laboratory for Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

Received Date: 2020-10-07
Rev Recd Date: 2020-12-19

Available Online: 2021-05-07

Publish Date: 2021-12-30

Abstract

Abstract

The information on sediment flux (Q_s) from continental shelf islands is an important supplement to the study of accurate records interpretation of continental shelf sedimentary systems. Aiming at the scientific problem of how to estimate the Q_s of continental islands, this paper proposes a solution to calculate their Q_s based upon the empirical formula of small and medium-sized rivers in adjacent continent, taking the 8227 continental islands in Southeast China as examples. Two preconditions are set up to perform the calculation. That is, the Q_s rule of the continental islands follows the rule of the small and medium-sized rivers in adjacent continent, and a continental island can be treated as a river basin to calculate its Q_s. The results show that: (1) the Q_s calculated by empirical formula is the minimum estimated value; if the actual basins of the continental island are taking into considered, the Q_s value will slightly increase, but the increase will not exceed n^0.13 (n is the number of basins); (2) the empirical formula give the approximate magnitude information of Q_s for continent islands; the total area of the continental islands is 4418.49 km², and the corresponding order of magnitude of Q_s is 10⁶ t/a; (3) during the completion of the estuarine filling stage, the continental island sediment is one of the main source for the inner continental shelf areas. Therefore, more attentions and researches are expected to the role play by the continental shelf islands to the formation and evolution of continental shelf depositional systems.
- sediment flux,
- continental shelf islands,
- adjacent continent medium and small rivers,
- empirical formula revision,
- China southeastern shallow waters

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References(52)

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