DOI: 10.1016/j.earscirev.2019.102977
论文题名: Global quantitative analyses of river discharge variability and hydrograph shape with respect to climate types
作者: Hansford M.R. ; Plink-Björklund P. ; Jones E.R.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2020
卷: 200 语种: 英语
中文关键词: Discharge variability
; Floods
; Global
; Hydroclimate
; Hydrograph shape
; River
英文关键词: annual variation
; flood
; global climate
; hydrograph
; morphodynamics
; quantitative analysis
; risk assessment
; river discharge
英文摘要: Discharge variability is a key control on hydrological behavior in rivers, such as the frequency and magnitude of floods. A better understanding of discharge variability and how that variability is linked to global climate has implications for flood prediction, risk analyses, and mitigation strategies. Furthermore, river discharge variability is a key control on river morphodynamics, and thus on river facies and architecture. Here we present a review of quantitative methods in river discharge variability analyses and utilize a global daily discharge database of 575 gauging stations from the Global Runoff Data Centre to analyze global discharge variability patterns and compare those patterns to hydroclimate conditions. Our approach differs from previous attempts to link river discharge patterns to climate in that we define hydroclimate types that combine the Köppen-Geiger climate types with precipitation variability. We develop new quantitative criteria and use a combination of multiple discharge variability criteria to compare hydrograph shapes to hydroclimate types. These analyses show that river discharge patterns fall into four statistically different and predictable groups as characterized by flood magnitude, hydrograph shape, and inter-annual variability in discharge. These four hydrological groups are: (1) persistent hydrology rivers, (2) single storm controlled variable discharge rivers, (3) rivers with seasonal hydrology, and (4) extreme and erratic hydrology rivers. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166100
Appears in Collections: 气候变化与战略
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作者单位: Department of Geology and Geological Engineering, Colorado School of Mines, 1500 Illinois St, Golden, CO 80401, United States; Occidental Petroleum Corporation, 5 Greenway Plaza Suite 110, Houston, TX 77046, United States
Recommended Citation:
Hansford M.R.,Plink-Björklund P.,Jones E.R.. Global quantitative analyses of river discharge variability and hydrograph shape with respect to climate types[J]. Earth Science Reviews,2020-01-01,200