| DOI: | 10.1002/2015GL064935
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| 论文题名: | Theoretical basis for at-many-stations hydraulic geometry |
| 作者: | Gleason C.J.; Wang J.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9235
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| EISSN: | 1944-8966
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| 出版年: | 2015
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| 卷: | 42, 期:17 | | 起始页码: | 7107
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| 结束页码: | 7114
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| 语种: | 英语
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| 英文关键词: | AMHG
; geomorphology
; hydraulic geometry
; hydrology
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| Scopus关键词: | Estimation
; Geomorphology
; Hydrology
; Satellite imagery
; AMHG
; At-a-station hydraulic geometries
; Discharge estimation
; Empirical parameters
; Hydraulic geometry
; Mathematical basis
; River discharge
; Site-specific
; Geometry
; convergence
; future prospect
; geometry
; geomorphology
; hydraulic property
; river discharge
; satellite imagery
; theoretical study
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| 英文摘要: | At-many-stations hydraulic geometry (AMHG) is a recently discovered set of geomorphic relationships showing that the empirical parameters of at-a-station hydraulic geometry (AHG) are functionally related along a river. This empirical conclusion seemingly refutes previous decades of research defining AHG as spatially independent and site specific. Furthermore, AMHG was the centerpiece of an unprecedented recent methodology that successfully estimated river discharge solely from satellite imagery. Despite these important implications, AMHG has remained an empirical phenomenon without theoretical explanation. Here we provide the mathematical basis for AMHG, showing that it arises when independent AHG curves within a reach intersect near the same values of discharge and width, depth, or velocity. The strength of observed AMHG is determined by the degree of this convergence. Finally, we show that AMHG enables discharge estimation by defining a set of possible estimated discharges that often match true discharges and propose its future interpretation as a fluvial index. ©2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84943362552&doi=10.1002%2f2015GL064935&partnerID=40&md5=adbc7d934ad395d681b650b4caeb082b
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8851
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Department of Geography, University of California, Los Angeles, CA, United States
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| Recommended Citation: | |
Gleason C.J.,Wang J.. Theoretical basis for at-many-stations hydraulic geometry[J]. Geophysical Research Letters,2015-01-01,42(17).
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