A review of aridity and groundwater
作者:
J. W. Lloyd,
期刊:
Hydrological Processes
(WILEY Available online 1986)
卷期:
Volume 1,
issue 1
页码: 63-78
ISSN:0885-6087
年代: 1986
DOI:10.1002/hyp.3360010107
出版商: John Wiley&Sons, Ltd
关键词: Arid zone Hydrogeology;Recharge Fossil gradients;Salination Resource management
数据来源: WILEY
摘要:
AbstractSurface hydrological studies are seen as inadequate in hyperarid and arid areas to provide reliable estimates of recharge. In most such areas surface discharges are not present so that assessments of groundwater resources are dependent upon ground interpretation and denied the flow control found in assessments elsewhere. Groundwater models show that gradients are sustained by long‐term dewatering and very small amounts of modern indirect recharge. Recharge indications are well within the error of a hydrological balance. Discharges appear equally small.The development of groundwater in arid areas frequently faces problems of salination due to recycling of irrigation water and rising groundwater heads. Abstraction is often inadequately managed so that uncontrolled mining of groundwater occurs. The advantage that groundwater has, however, is that it offers staged development and staged appraisa
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