Morphodynamics and geohazard significance of the Shenhu Submarine Canyon System: Evidence from multibeam bathymetry and 3D seismic data☆
文献类型：期刊论文
| 作者 | Guo, Xu3,4; Jia, Yonggang3,4; Zhu, Chaoqi2; Chen, Duanxin1; Chen, Xiang3,4 |
| 刊名 | GEOMORPHOLOGY
 |
| 出版日期 | 2026-07-15 |
| 卷号 | 505页码:20 |
| 关键词 | Benthic Terrain Modeler Geomorphometry Submarine landslides Submarine canyons Sediment transport |
| ISSN号 | 0169-555X |
| DOI | 10.1016/j.geomorph.2026.110326 |
| 通讯作者 | Guo, Xu(guoxu@stu.ouc.edu.cn) |
| 英文摘要 | Geomorphological analysis of submarine canyons is important for understanding canyon-related geohazards and for supporting safety assessments of offshore oil and gas infrastructure. The integration of multibeam bathymetric data and three-dimensional seismic profiles provides an effective basis for investigating canyon morphology, geomorphic organization, and geohazard-related features. However, because of the morphological complexity of the seafloor and the coupling among erosion, deposition, slope instability, and fluid-related processes, interpreting canyon development and its geohazard significance remains challenging. In this study, seafloor morphology was first characterized through morphometric analysis of a digital elevation model and its terrain derivatives, and the relative performance of terrain-classification methods was compared. Six major terrain categories were identified: fan, canyon, sill, depression, saddle, and ridge. Building on this classification, and integrating bathymetric morphology, seismic reflection profiles, and topographic cross-sections, nine geomorphologically meaningful units were further identified: canyon head, sediment-wave crest, sediment-wave field, plunge pool, submarine landslide, channel, gully, scour, and submarine fan. Rather than proposing a strictly time-calibrated evolutionary model, this study develops a relative morphodynamic framework to organize the observed variations in canyon morphology, sediment-wave modification, slope instability, and fluidrelated deformation, emphasizing the coupled roles of erosion-deposition processes and fluid migration in canyon development. Particular attention is given to the canyon-terminal sector, which represents a geomorphologically distinctive and geohazard-relevant part of the Shenhu canyon system, where canyon development is closely coupled with sediment redistribution, slope failure, and fluid-related processes. Given the presence of extensive oil and gas infrastructure in the study area, including drilling platforms and subsea pipelines, this study provides an integrated, geohazard-oriented interpretation workflow for the Shenhu Canyon System and offers a qualitative basis for future slope-stability evaluation and hazard assessment. |
| WOS关键词 | SOUTH CHINA SEA ; CONTINENTAL-SLOPE ; FLOOR ; WATER ; AREA |
| 资助项目 | NSFC Shiptime Sharing Project[NORC2024-302] ; [42349302] |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001745201700001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204925]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Guo, Xu |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Ocean Univ China, Key Lab Submarine Geosci & Prospecting Tech MOE, Qingdao, Peoples R China 3.Ocean Univ China, Environm Sci & Engn Coll, Qingdao 266100, Peoples R China 4.Ocean Univ China, Shandong Prov Key Lab Marine Environm & Geol Engn, Qingdao 266100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Xu,Jia, Yonggang,Zhu, Chaoqi,et al. Morphodynamics and geohazard significance of the Shenhu Submarine Canyon System: Evidence from multibeam bathymetry and 3D seismic data☆[J]. GEOMORPHOLOGY,2026,505:20. |
| APA | Guo, Xu,Jia, Yonggang,Zhu, Chaoqi,Chen, Duanxin,&Chen, Xiang.(2026).Morphodynamics and geohazard significance of the Shenhu Submarine Canyon System: Evidence from multibeam bathymetry and 3D seismic data☆.GEOMORPHOLOGY,505,20. |
| MLA | Guo, Xu,et al."Morphodynamics and geohazard significance of the Shenhu Submarine Canyon System: Evidence from multibeam bathymetry and 3D seismic data☆".GEOMORPHOLOGY 505(2026):20. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。