Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41467-020-16861-x |
Rapidly-migrating and internally-generated knickpoints can control submarine channel evolution | |
Heijnen, Maarten S.1,2; Clare, Michael A.1; Cartigny, Matthieu J. B.3,4; Talling, Peter J.3,4; Hage, Sophie2,8; Lintern, D. Gwyn5; Stacey, Cooper5; Parsons, Daniel R.6; Simmons, Stephen M.6; Chen, Ye6; Sumner, Esther J.2; Dix, Justin K.2; Clarke, John E. Hughes7 | |
2020-06-19 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2020 |
卷号 | 11期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Canada; USA |
英文摘要 | Submarine channels are the primary conduits for terrestrial sediment, organic carbon, and pollutant transport to the deep sea. Submarine channels are far more difficult to monitor than rivers, and thus less well understood. Here we present 9 years of time-lapse mapping of an active submarine channel along its full length in Bute Inlet, Canada. Past studies suggested that meander-bend migration, levee-deposition, or migration of (supercritical-flow) bedforms controls the evolution of submarine channels. We show for the first time how rapid (100-450m/year) upstream migration of 5-to-30 m high knickpoints can control submarine channel evolution. Knickpoint migration-related changes include deep (>25m) erosion, and lateral migration of the channel. Knickpoints in rivers are created by external factors, such as tectonics, or base-level change. However, the knickpoints in Bute Inlet appear internally generated. Similar knickpoints are found in several submarine channels worldwide, and are thus globally important for how channels operate. The authors analyse 9 years of time-lapse surveys in Bute Inlet, British Columbia (CA), to show how an active submarine channel evolves. They show how channel evolution is controlled by fast upstream-migration of steep knickpoints, which are similar to waterfalls in rivers. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000545685800004 |
WOS关键词 | TURBIDITY-CURRENT ACTIVITY ; BRITISH-COLUMBIA ; BUTE INLET ; FLOW PROCESSES ; HELICAL FLOW ; CYCLIC STEPS ; BENGAL FAN ; SEA-LEVEL ; CURRENTS ; MORPHOLOGY |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/276640 |
专题 | 资源环境科学 |
作者单位 | 1.Natl Oceanog Ctr, European Way, Southampton SO14 3ZH, Hants, England; 2.Univ Southampton, Natl Oceanog Ctr, Ocean & Earth Sci, European Way, Southampton SO14 3ZH, Hants, England; 3.Univ Durham, Dept Geog, South Rd, Durham DH1 3LE, England; 4.Univ Durham, Dept Earth Sci, South Rd, Durham DH1 3LE, England; 5.Geol Survey Canada, Nat Resources Canada, Box 6000,9860 West Saanich Rd, Sidney, BC, Canada; 6.Univ Hull, Energy & Environm Inst, Cottingham Rd, Kingston Upon Hull HU6 7RX, N Humberside, England; 7.Univ New Hampshire, Ctr Coastal & Ocean Mapping, Earth Sci, 24 Colovos Rd, Durham, NC USA; 8.Univ Calgary, Dept Geosci, Calgary, AB T2N 1N4, Canada |
推荐引用方式 GB/T 7714 | Heijnen, Maarten S.,Clare, Michael A.,Cartigny, Matthieu J. B.,et al. Rapidly-migrating and internally-generated knickpoints can control submarine channel evolution[J]. NATURE COMMUNICATIONS,2020,11(1). |
APA | Heijnen, Maarten S..,Clare, Michael A..,Cartigny, Matthieu J. B..,Talling, Peter J..,Hage, Sophie.,...&Clarke, John E. Hughes.(2020).Rapidly-migrating and internally-generated knickpoints can control submarine channel evolution.NATURE COMMUNICATIONS,11(1). |
MLA | Heijnen, Maarten S.,et al."Rapidly-migrating and internally-generated knickpoints can control submarine channel evolution".NATURE COMMUNICATIONS 11.1(2020). |
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