Potential failure mechanism of low-angle submarine landslides in shelf-slope break of Pearl River Mouth Basin, South China Sea
文献类型：期刊论文
| 作者 | Li, Zhenghui2,3; Singh, Devendra Narain1; Zhu, Chaoqi2,4; Hu, Cong2,4; Lohar, Geetanjali Kishan1; Wang, Xiujuan2; Chen, Duanxin5; Jia, Yonggang2,4; Liu, Hanlu2,4 |
| 刊名 | INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 35期号:11页码:2031-2053 |
| 关键词 | Submarine landslides Rapid sedimentation Earthquake High-pressure gas Triggering mechanism |
| ISSN号 | 2095-2686 |
| DOI | 10.1016/j.ijmst.2025.09.009 |
| 通讯作者 | Zhu, Chaoqi(zhuchaoqi@ouc.edu.cn) ; Jia, Yonggang(yonggang@ouc.edu.cn) |
| 英文摘要 | Low-angle submarine landslides pose a greater threat to offshore infrastructure compared to those with steep sliding angles. Understanding the preparation and triggering mechanism of these low-angle submarine landslides remains a significant challenge. This study focuses on a deformed low-angle submarine landslide in the shelf-slope break of the Pearl River Mouth Basin, South China Sea, integrating sedimentology, geophysics, and geotechnology to investigate potential failure mechanisms. The architecture and deformation characteristics of the submarine landslide were elucidated by analyzing multibeam and seismic data. Within the context of the regional geological history and tectonic framework, this study focuses on the factors (e.g., rapid sedimentation, fluid activity, and earthquakes) that potentially contributed to the submarine slope failure. Furthermore, a series of stability evaluations considering the effects of rapid sedimentation and earthquakes was conducted. Our findings indicate that the most probable triggering mechanism involves the combined effects of sedimentation controlled by sea-level fluctuations, high-pressure gas activity, and seismic events. The high-pressure gas, which acts as along-term preconditioning factor by elevating pore pressures and reducing shear resistance within the sediment, accumulated beneath the upper and middle sections of the low-permeability stratum that was formed during sea-level rise and ultimately evolved into the sliding mass. The overpressure generated by gas accumulation predisposed the submarine slope to instability, and a frequent or moderate earthquake ultimately initiated local failure. This study enhances the mechanistic understanding of low-angle slope failures in the shelf-slope break zone and provides critical insights for assessing marine hazard risks. (c) 2025 China University of Mining & Technology. Publishing services by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| WOS关键词 | CONTINENTAL-SLOPE ; NORTHERN SLOPE ; OFFSHORE ; MORPHOLOGY ; BEHAVIORS ; STABILITY ; STRENGTH ; ATLANTIC ; GIANT ; CLAY |
| 资助项目 | NSFC Shiptime Sharing Project[42349302] ; NSFC Shiptime Sharing Project[42149905] ; Hubei Provincial Natural Science Foundation of China[2024AFB515] ; National Natural Science Foundation of China[42207173] ; National Natural Science Foundation of China[41831280] ; National Natural Science Foundation of China[42176071] ; National Key R&D Program of China[2024YFC3082500] ; Shandong Provincial Natural Science Foundation of China[ZR2022QD002] ; Shandong Provincial Taishan Scholar Construction Project[tsqn202507091] ; Shandong Provincial Young Innovators Team[2024KJH183] |
| WOS研究方向 | Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:001640466900001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204478]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Zhu, Chaoqi; Jia, Yonggang |
| 作者单位 | 1.Indian Inst Technol, Dept Civil Engn, Mumbai 400076, India 2.Ocean Univ China, Shandong Prov Key Lab Marine Environm & Geol Engn, Key Lab Submarine Geosci & Prospecting Tech MOE, Qingdao 266100, Peoples R China 3.Wuhan Ctr, Geosci Innovat Ctr Cent South China, China Geol Survey, Wuhan 430205, Peoples R China 4.Qingdao Marine Sci & Technol Ctr, Lab Marine Geol, Qingdao 266061, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zhenghui,Singh, Devendra Narain,Zhu, Chaoqi,et al. Potential failure mechanism of low-angle submarine landslides in shelf-slope break of Pearl River Mouth Basin, South China Sea[J]. INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY,2025,35(11):2031-2053. |
| APA | Li, Zhenghui.,Singh, Devendra Narain.,Zhu, Chaoqi.,Hu, Cong.,Lohar, Geetanjali Kishan.,...&Liu, Hanlu.(2025).Potential failure mechanism of low-angle submarine landslides in shelf-slope break of Pearl River Mouth Basin, South China Sea.INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY,35(11),2031-2053. |
| MLA | Li, Zhenghui,et al."Potential failure mechanism of low-angle submarine landslides in shelf-slope break of Pearl River Mouth Basin, South China Sea".INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY 35.11(2025):2031-2053. |
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来源：海洋研究所
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