Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL075751 |
Which Triggers Produce the Most Erosive, Frequent, and Longest Runout Turbidity Currents on Deltas? | |
Hizzett, J. L.1,2; Clarke, J. E. Hughes3; Sumner, E. J.2; Cartigny, M. J. B.4,5; Talling, P. J.4,5; Clare, M. A.1 | |
2018-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:2页码:855-863 |
文章类型 | Article |
语种 | 英语 |
国家 | England; USA |
英文摘要 | Subaerial rivers and turbidity currents are the two most voluminous sediment transport processes on our planet, and it is important to understand how they are linked offshore from river mouths. Previously, it was thought that slope failures or direct plunging of river floodwater (hyperpycnal flow) dominated the triggering of turbidity currents on delta fronts. Here we reanalyze the most detailed time-lapse monitoring yet of a submerged delta; comprising 93 surveys of the Squamish Delta in British Columbia, Canada. We show that most turbidity currents are triggered by settling of sediment from dilute surface river plumes, rather than landslides or hyperpycnal flows. Turbidity currents triggered by settling plumes occur frequently, run out as far as landslide-triggered events, and cause the greatest changes to delta and lobe morphology. For the first time, we show that settling from surface plumes can dominate the triggering of hazardous submarine flows and offshore sediment fluxes. |
英文关键词 | River deltas Turbidity current triggers Settling river plume Submarine landslides Turbidity current runout Turbidity current trigger frequency |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425514300042 |
WOS关键词 | ST-LAWRENCE ESTUARY ; SUBMARINE CANYONS ; FRASER-RIVER ; CYCLIC STEPS ; CANADA ; FLOWS ; PLUME ; DENSITY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27766 |
专题 | 气候变化 |
作者单位 | 1.Univ Southampton, Natl Oceanog Ctr, Waterfront Campus, Southampton, Hants, England; 2.Univ Southampton, Natl Oceanog Ctr Southampton, Ocean & Earth Sci, Southampton, Hants, England; 3.Univ New Hampshire, Ctr Coastal & Ocean Mapping, Durham, NH 03824 USA; 4.Univ Durham, Dept Earth Sci, Durham, England; 5.Univ Durham, Dept Geog, Durham, England |
推荐引用方式 GB/T 7714 | Hizzett, J. L.,Clarke, J. E. Hughes,Sumner, E. J.,et al. Which Triggers Produce the Most Erosive, Frequent, and Longest Runout Turbidity Currents on Deltas?[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(2):855-863. |
APA | Hizzett, J. L.,Clarke, J. E. Hughes,Sumner, E. J.,Cartigny, M. J. B.,Talling, P. J.,&Clare, M. A..(2018).Which Triggers Produce the Most Erosive, Frequent, and Longest Runout Turbidity Currents on Deltas?.GEOPHYSICAL RESEARCH LETTERS,45(2),855-863. |
MLA | Hizzett, J. L.,et al."Which Triggers Produce the Most Erosive, Frequent, and Longest Runout Turbidity Currents on Deltas?".GEOPHYSICAL RESEARCH LETTERS 45.2(2018):855-863. |
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