The effects of climate changes on aquifer storage and river baseflow
作者:
D.M. COOPER,
W.B. WILKINSON,
N.W. ARNELL,
期刊:
Hydrological Sciences Journal
(Taylor Available online 1995)
卷期:
Volume 40,
issue 5
页码: 615-631
ISSN:0262-6667
年代: 1995
DOI:10.1080/02626669509491448
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The effects of changes in climate on aquifer storage and groundwater flow to rivers have been investigated using an idealized representation of the aquifer/river system. The generalized aquifer/river model can incorporate spatial variability in aquifer transmissivity and is applied with parameters characteristic of Chalk and Triassic sandstone aquifers in the United Kingdom, and is also applicable to other aquifers elsewhere. The model is run using historical time series of recharge, estimated from observed rainfall and potential evaporation data, and with climate inputs perturbed according to a number of climate change scenarios. Simulations of baseflow suggest large proportional reductions at low flows from Chalk under high evaporation change scenarios. Simulated baseflow from the slower responding Triassic sandstone aquifer shows more uniform and less severe reductions. The change in hydrological regime is less extreme for the low evaporation change scenario, but remains significant for the Chalk aquifer.
点击下载:
PDF (981KB)
返 回