| A physically-modified spectral model for prediction of sand wave migration | |
Cao GH(曹高辉)1 ; Jiang WB(江文滨)1,2; Lin M(林缅)1,2
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| Corresponding Author | Jiang, Wenbin([email protected]) ; Lin, Mian([email protected]) |
| Source Publication | CONTINENTAL SHELF RESEARCH
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| 2021-11-15 | |
| Volume | 230Pages:13 |
| ISSN | 0278-4343 |
| Abstract | Sand waves are rhythmic bedforms existing in shallow seas and typically induced by the interaction of currents and topography. In this study, a physically-modified spectral model for simulating small-scale sand wave migration is proposed by integrating non-linear spectral analysis, typhoon wind field and sediment transport theory. We introduce a power-average velocity to modify the spectral analysis, which gives explicit physical meanings to the morphological method and improves its stability and reliability. Then, the effects of typical and extreme weather are decoupled and the short-term migration caused by typhoons is removed from the total migration. Results show that a single typhoon will cause large sand wave migration, but the migration caused by multiple typhoons in a long period of time will cancel each other out in the measured data. Moreover, the bilateral reverse migration trend of one-group sand waves in a small scale (~3 km) is captured, which is consistent with field data and previous researches. Compared with existing researches, the proposed model is able to identify the influences of extreme conditions on sand wave migration and provide a feasible and high efficiency way to predict sand wave migration when the available hydrodynamic data is limited. |
| Keyword | Sand wave Spectral model Typhoon Shallow shelf sea |
| DOI | 10.1016/j.csr.2021.104573 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000709789700001 |
| WOS Keyword | GULF |
| WOS Research Area | Oceanography |
| WOS Subject | Oceanography |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Jiang, Wenbin ; Lin, Mian |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/87763 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Cao GH,Jiang WB,Lin M. A physically-modified spectral model for prediction of sand wave migration[J]. CONTINENTAL SHELF RESEARCH,2021,230:13.Rp_Au:Jiang, Wenbin, Lin, Mian |
| APA | 曹高辉,江文滨,&林缅.(2021).A physically-modified spectral model for prediction of sand wave migration.CONTINENTAL SHELF RESEARCH,230,13. |
| MLA | 曹高辉,et al."A physically-modified spectral model for prediction of sand wave migration".CONTINENTAL SHELF RESEARCH 230(2021):13. |
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| File Name/Size | DocType | Version | Access | License | ||
| Jp2021F527.pdf（5051KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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