DOI: 10.5194/hess-18-1273-2014
Scopus记录号: 2-s2.0-84897508318
论文题名: Modelling overbank flood recharge at a continental scale
作者: Doble R ; , Crosbie R ; , Peeters L ; , Joehnk K ; , Ticehurst C
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2014
卷: 18, 期: 4 起始页码: 1273
结束页码: 1288
语种: 英语
Scopus关键词: Catchments
; Flood control
; Floods
; Runoff
; Satellite imagery
; Water conservation
; Analytical equations
; Continental scale
; Flood inundation mappings
; Ground water recharge
; Groundwater storage
; Recharge estimates
; Surface water and groundwaters
; Surface water-groundwater interaction
; Recharging (underground waters)
; catchment
; continental shelf
; flood
; groundwater-surface water interaction
; hydrological modeling
; mapping method
; numerical model
; recharge
; satellite data
; satellite imagery
; water budget
; Australia
英文摘要: Accounting for groundwater recharge from overbank flooding is required to reduce uncertainty and error in river-loss terms and groundwater sustainable-yield calculations. However, continental-and global-scale models of surface water-groundwater interactions rarely include an explicit process to account for overbank flood recharge (OFR). This paper upscales previously derived analytical equations to a continental scale using national soil atlas data and satellite imagery of flood inundation, resulting in recharge maps for seven hydrologically distinct Australian catchments. Recharge for three of the catchments was validated against independent recharge estimates from bore hydrograph responses and one catchment was additionally validated against point-scale recharge modelling and catchment-scale change in groundwater storage. Flood recharge was predicted for four of the seven catchments modelled, but there was also unexplained recharge present from the satellite's flood inundation mapping data. At a catchment scale, recharge from overbank flooding was somewhat under-predicted using the analytical equations, but there was good confidence in the spatial patterns of flood recharge produced. Due to the scale of the input data, there were no significant relationships found when compared at a point scale. Satellite-derived flood inundation data and uncertainty in soil maps were the key limitations to the accuracy of the modelled recharge. Use of this method to model OFR was found to be appropriate at a catchment to continental scale, given appropriate data sources. The proportion of OFR was found to be at least 4% of total change in groundwater storage in one of the catchments for the period modelled, and at least 15% of the riparian recharge. Accounting for OFR is an important, but often overlooked, requirement for closing water balances in both the surface water and groundwater domains. © 2014 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78280
Appears in Collections: 气候变化事实与影响
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作者单位: Water for A Healthy Country, National Research Flagship, CSIRO Land and Water, Glen Osmond, SA, 5064, Australia; Water for A Healthy Country, National Research Flagship, CSIRO Land and Water, Canberra, ACT, 2601, Australia
Recommended Citation:
Doble R,, Crosbie R,, Peeters L,et al. Modelling overbank flood recharge at a continental scale[J]. Hydrology and Earth System Sciences,2014-01-01,18(4)