Are equilibrium multichannel networks predictable? The case of the regulated Indus River, Pakistan
文献类型：期刊论文
| 作者 | Carling, P. A.1,3; Trieu, H.1,7; Hornby, D. D.2; Qing, Huang He4; Darby, S. E.1; Sear, D. A.1; Hutton, C.2; Hill, C.2; Ali, Z.5; Ahmed, A.5 |
| 刊名 | GEOMORPHOLOGY
 |
| 出版日期 | 2018-02-01 |
| 卷号 | 302页码:20-34 |
| 关键词 | Indus River: river bank erosion Channel stability Anabranch Maximum flow efficiency |
| ISSN号 | 0169-555X |
| DOI | 10.1016/j.geomorph.2017.09.021 |
| 通讯作者 | Carling, P. A.(PACarling@soton.ac.uk) |
| 英文摘要 | Arguably, the current planform behaviour of the Indus River is broadly predictable. Between Chashma and Taunsa, Pakistan, the Indus is a 264-km-long multiple-channel reach. Remote sensing imagery, encompassing major floods in 2007 and 2010, shows that the Indus has a minimum of two and a maximum of nine channels, with on average four active channels during the dry season and five during the annual monsoon. Thus, the network structure, if not detailed planform, remains stable even for the record 2010 flood (27,100 m(3) s(-1); recurrence interval > 100 years). Bankline recession is negligible for discharges less than a peak annual discharge of 6000 m(3) s(-1) (similar to 80% of mean annual flood). The Maximum Flow Efficiency (MFE) principle demonstrates that the channel network is insensitive to the monsoon floods, which typically peak at 13,200 m(3) s(-1). Rather, the network is in near similar to equilibrium with the mean annual flood (7530 m(3) s(-1)). The MFE principle indicates that stable networks have three to four channels, thus the observed stability in the number of active channels accords with the presence of a near-equilibrium reach-scale channel network Insensitivity to the annual hydrological cycle demonstrates that the timescale for network adjustment is much longer than the timescale of the monsoon hydrograph, with the annual excess water being stored on floodplains rather than being conveyed in an enlarged channel network The analysis explains the lack of significant channel adjustment following the largest flood in 40 years and the extensive Indus flooding experienced on an annual basis, with its substantial impacts on the populace and agricultural production. (C) 2017 The Authors. Published by Elsevier B.V. |
| WOS关键词 | CHANNEL BIFURCATION ; SEDIMENT LOAD ; PATTERNS ; CLASSIFICATION ; SENSITIVITY ; ADJUSTMENT ; AVULSIONS ; HISTORY ; IMPACT ; REGIME |
| 资助项目 | FAO contract[LoA/TF/PAK/2011/TCESP] ; Chinese Academy of Science ; UK Natural Environment Research Council (NERC)[NE/JO21970/1] |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000425200300003 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | FAO contract ; Chinese Academy of Science ; UK Natural Environment Research Council (NERC) |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/56988]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Carling, P. A. |
| 作者单位 | 1.Univ Southampton, Geog & Environm, Southampton, Hants, England 2.Univ Southampton, GeoData, Geog & Environm, Southampton, Hants, England 3.Henan Univ, Coll Environm & Planning, Keifeng 475004, Henan, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 5.Pakistan Space & Upper Atmosphere Res Commiss SUP, Islamabad, Pakistan 6.Water Power & Dev Author, Islamabad, Pakistan 7.Marlborough Dist Council, 15 Seymour St,POB 443, Blenheim 7240, New Zealand |
| 推荐引用方式 GB/T 7714 | Carling, P. A.,Trieu, H.,Hornby, D. D.,et al. Are equilibrium multichannel networks predictable? The case of the regulated Indus River, Pakistan[J]. GEOMORPHOLOGY,2018,302:20-34. |
| APA | Carling, P. A..,Trieu, H..,Hornby, D. D..,Qing, Huang He.,Darby, S. E..,...&Hussain, Z..(2018).Are equilibrium multichannel networks predictable? The case of the regulated Indus River, Pakistan.GEOMORPHOLOGY,302,20-34. |
| MLA | Carling, P. A.,et al."Are equilibrium multichannel networks predictable? The case of the regulated Indus River, Pakistan".GEOMORPHOLOGY 302(2018):20-34. |
入库方式： OAI收割
来源：地理科学与资源研究所
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