Submarine Landslides in the West Continental Slope of the South China Sea and Their Tsunamigenic Potential
文献类型:期刊论文
作者 | Pan, Xiaoyi2; Li, Linlin2,3; Nguyen, Hung Phuong4,5,8; Wang, Dawei3,7; Switzer, Adam D.1,6 |
刊名 | FRONTIERS IN EARTH SCIENCE |
出版日期 | 2022-04-06 |
卷号 | 10页码:19 |
关键词 | submarine landslide tsunami South China Sea strike-slip fault trigger mechanism |
DOI | 10.3389/feart.2022.843173 |
通讯作者 | Li, Linlin ; Nguyen, Hung Phuong |
目次 | 否 |
英文摘要 | The 109 meridian fault is located in the west of the South China Sea (SCS) connecting to the offshore Red River Shear Zone. Seismic data from the central Vietnamese shelf indicates that many submarine landslides were developed along the steep continental slope in this offshore region. Here, we analyze the potential for such landslides to trigger damaging tsunamis based on the local geological background and sedimentary environment. We assess their tsunamigenic potential along the coast of Southern Central Vietnam (SCV). We point out that the evolutionary processes of the 109 degrees meridian fault: striking-subsidence of the adjacent basin, combined with the high sediment input from numerous montane rivers of the hinterland generate conditions that likely favor the development of submarine landslides along the well-defined and steep continental slope near SCV. To estimate the impact of tsunami waves on the SCV coastline, we conducted a pilot study using two numerical models: NHWAVE and FUNWAVE-TVD to model 4 representative landslides with volumes ranging between 1.3 and 14 km(3) and water depth of 300-1000 m. The submarine landslides were treated as rigid slump and deformable slide corresponding to two different sedimentary environments. Our results show that the tsunami waves generated by rigid slump can reach up to 20 m height in the landslide source area and similar to 5 m when arriving at the closest coastline. Tsunami waves could arrive at the central Vietnam coast within 30 min in eight scenarios. Our initial results also suggest that seafloor topography, i.e., waveguide effects of ocean ridges, shelf resonance and the potential bay resonance cause significant variability in potential run-up. We note that ocean ridges located in the deep basin of the SCS focus the tsunami energy propagating towards the northwest coast of Luzon Island, Philippines where tsunami wave heights of similar to 2.3 m wave height are modeled. These findings underscore the importance of tsunami hazard assessments that account for both earthquake generated and earthquake triggered tsunamis. Our work also highlights a continued need to examine tsunami sources in the region as mitigation and preparedness for the socio-economically important and heavily populated coastlines of the SCS is reliant on a detailed understanding of the hazard. |
WOS关键词 | MASS-TRANSPORT DEPOSITS ; ANAK KRAKATAU VOLCANO ; QIONGDONGNAN BASIN ; LATERAL COLLAPSE ; CENTRAL VIETNAM ; NORTHERN SLOPE ; TIBETAN UPLIFT ; EVOLUTION ; MODEL ; GENERATION |
资助项目 | Guangdong Province Introduced Innovative R&D Team of Geological Processes and Natural Disasters around the South China Sea[2016ZT06N331] ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)[311021002] ; National Natural Science Foundation[41976197] ; Key Research and Development Program of Hainan Province[ZDYF2020209] ; Singapore Ministry of Education Academic Research Fund[MOE2019-T3-1-004] ; Singapore Ministry of Education Academic Research Fund[MOE2018-T2-1-030] ; National Research Foundation Singapore ; Singapore Ministry of Education under the Research Centers of Excellence initiative ; Nanyang Technological University ; National Research Foundation, Singapore ; National Environment Agency, Singapore under the National Sea Level Programme Funding Initiative[USS-IF-2020-2] ; Program for supporting scientific research activities for 1st rank senior researcher by Vietnam Academy of Science and Technology under grant[NCVCC12.03/22-22] |
WOS研究方向 | Geology |
语种 | 英语 |
出版者 | FRONTIERS MEDIA SA |
WOS记录号 | WOS:000791277500001 |
资助机构 | Guangdong Province Introduced Innovative R&D Team of Geological Processes and Natural Disasters around the South China Sea ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; National Natural Science Foundation ; Key Research and Development Program of Hainan Province ; Singapore Ministry of Education Academic Research Fund ; National Research Foundation Singapore ; Singapore Ministry of Education under the Research Centers of Excellence initiative ; Nanyang Technological University ; National Research Foundation, Singapore ; National Environment Agency, Singapore under the National Sea Level Programme Funding Initiative ; Program for supporting scientific research activities for 1st rank senior researcher by Vietnam Academy of Science and Technology under grant |
源URL | [http://ir.idsse.ac.cn/handle/183446/9594] |
专题 | 深海科学研究部_深海地球物理与资源研究室 |
通讯作者 | Li, Linlin; Nguyen, Hung Phuong |
作者单位 | 1.Nanyang Technol Univ, Asian Sch Environm, Singapore, Singapore 2.Sun Yet Sen Univ, Sch Earth Sci & Engn, Guangdong Prov Key Lab Geodynam & Geohazards, Guangzhou, Peoples R China 3.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China 4.Vietnam Acad Sci & Technol, Inst Geophys, Hanoi, Vietnam 5.Sorbonne Univ, UPMC Univ Paris 06, Unite Mixte Internatl Modelisat Math, RD, Hanoi, Vietnam 6.Nanyang Technol Univ, Earth Observ Singapore, Singapore, Singapore 7.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China 8.Vietnam Acad Sci & Technol, Grad Univ Sci & Technol, Hanoi, Vietnam |
推荐引用方式 GB/T 7714 | Pan, Xiaoyi,Li, Linlin,Nguyen, Hung Phuong,et al. Submarine Landslides in the West Continental Slope of the South China Sea and Their Tsunamigenic Potential[J]. FRONTIERS IN EARTH SCIENCE,2022,10:19. |
APA | Pan, Xiaoyi,Li, Linlin,Nguyen, Hung Phuong,Wang, Dawei,&Switzer, Adam D..(2022).Submarine Landslides in the West Continental Slope of the South China Sea and Their Tsunamigenic Potential.FRONTIERS IN EARTH SCIENCE,10,19. |
MLA | Pan, Xiaoyi,et al."Submarine Landslides in the West Continental Slope of the South China Sea and Their Tsunamigenic Potential".FRONTIERS IN EARTH SCIENCE 10(2022):19. |
入库方式: OAI收割
来源:深海科学与工程研究所
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