| Flow processes and sedimentation in unidirectionally migrating deep-water channels: From a three-dimensional seismic perspective | |
| Gong, Chenglin1,2; Wang, Yingmin3; Steel, Ronald J.2; Peakall, Jeff4; Zhao, Xiaoming5; Sun, Qiliang6 | |
| 2016-04-01 | |
| 发表期刊 | SEDIMENTOLOGY
 |
| 卷号 | 63期号:3页码:645-661 |
| 文章类型 | Article |
| 摘要 | Three-dimensional seismic data were used to infer how bottom currents control unidirectional channel migration. Bottom currents flowing towards the steep bank would deflect the upper part of sediment gravity flows at an orientation of 1 degrees to 11 degrees to the steep bank, yielding a helical flow circulation consisting of a faster near-surface flow towards the steep bank and a slower basal return flow towards the gentle bank. This helical flow model is evidenced by the occurrence of bigger, muddier (suggested by low-amplitude seismic reflections) lateral accretion deposits and gentle channel wall with downlap terminations on the gentle bank and by smaller, sandier (indicated by high-amplitude seismic reflectors) channel fills and steep channel walls with truncation terminations on the steep bank. This helical flow circulation promotes asymmetrical depositional patterns with dipping accretion sets restricted to the gentle bank, which restricts the development of sinuosity and yields unidirectional channel migration. These results aid in obtaining a complete picture of flow processes and sedimentation in submarine channels. |
| 关键词 | Bottom Current-controlled Sedimentation Helical Flow Circulation The Interplay Of Turbidity And Bottom Currents Unidirectionally Migrating Deep-water Channels West African Margin |
| DOI | 10.1111/sed.12233 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000372342200006 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/126200 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China 2.Univ Texas Austin, Jackson Sch Geosci, Dept Geol Sci, Austin, TX 78712 USA 3.Zhejiang Univ, Ocean Coll, Hangzhou 310058, Zhejiang, Peoples R China 4.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England 5.Southwest Petr Univ, Sch Geosci & Technol, Sichuan 610500, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Chenglin,Wang, Yingmin,Steel, Ronald J.,et al. Flow processes and sedimentation in unidirectionally migrating deep-water channels: From a three-dimensional seismic perspective[J]. SEDIMENTOLOGY,2016,63(3):645-661. |
| APA | Gong, Chenglin,Wang, Yingmin,Steel, Ronald J.,Peakall, Jeff,Zhao, Xiaoming,&Sun, Qiliang.(2016).Flow processes and sedimentation in unidirectionally migrating deep-water channels: From a three-dimensional seismic perspective.SEDIMENTOLOGY,63(3),645-661. |
| MLA | Gong, Chenglin,et al."Flow processes and sedimentation in unidirectionally migrating deep-water channels: From a three-dimensional seismic perspective".SEDIMENTOLOGY 63.3(2016):645-661. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Flow processes and s（19357KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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