Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.4319/lo.2009.54.1.0086 |
Groundwater recharge and discharge dynamics in an arid-zone ephemeral lake system, Australia | |
Costelloe, Justin F.1; Irvine, Elizabeth C.1; Western, Andrew W.1; Herczeg, Andrew L.2 | |
通讯作者 | Costelloe, Justin F. |
来源期刊 | LIMNOLOGY AND OCEANOGRAPHY
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ISSN | 0024-3590 |
出版年 | 2009 |
卷号 | 54期号:1页码:86-100 |
英文摘要 | The Coongie Lakes are a series of ephemeral freshwater lakes on the lower reaches of Cooper Creek, a large intermittent river of the arid Lake Eyre Basin, Australia. Hydrogeological, chemical, and isotopic observations, in conjunction with numerical modeling of groundwater responses to lake inundation events, have been used to identify the dominant processes linking shallow, unconfined groundwater with the hydrology of the lakes during wet and dry periods. The lakes are predominantly zones of net groundwater recharge during inundation events. However, soil profile data suggests that drying of some of these lakes allows evaporative groundwater discharge to occur through the soil profile of the dry lake beds, resulting in salinization of the soil profile of the more ephemeral lakes. The occurrence of young, high-salinity groundwater is best explained by variations in soil profile flushing in response to wet and dry interannual periods of river discharge. During interannual drier phases, when filling of previously dry lakes is more common, recharge is mostly via macropore flow during the rising stage of the inundation. Increased salinization of the lake-bed sediments occurs during longer dry periods due to transport of solutes to the near-surface from lake-bed evaporation and limited flushing of the soil profile because of the macropore-dominated flow during recharge. During wet periods, recharge is more likely dominated by matrix flow that results in leaching of the soil profile and increased export of solutes into the alluvial aquifer. |
类型 | Article |
语种 | 英语 |
国家 | Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000265168800008 |
WOS关键词 | STABLE-ISOTOPE ; SALINE GROUNDWATER ; SALT ACCUMULATION ; SOUTH-AUSTRALIA ; OKAVANGO DELTA ; COOPER CREEK ; WATER-TABLE ; SOIL-WATER ; FLOODPLAIN ; RIVER |
WOS类目 | Limnology ; Oceanography |
WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
来源机构 | Commonwealth Scientific and Industrial Research Organisation |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/161889 |
作者单位 | 1.Univ Melbourne, Dept Civil & Environm Engn, Melbourne, Vic 3010, Australia; 2.CSIRO, Glen Osmond, SA 5064, Australia |
推荐引用方式 GB/T 7714 | Costelloe, Justin F.,Irvine, Elizabeth C.,Western, Andrew W.,et al. Groundwater recharge and discharge dynamics in an arid-zone ephemeral lake system, Australia[J]. Commonwealth Scientific and Industrial Research Organisation,2009,54(1):86-100. |
APA | Costelloe, Justin F.,Irvine, Elizabeth C.,Western, Andrew W.,&Herczeg, Andrew L..(2009).Groundwater recharge and discharge dynamics in an arid-zone ephemeral lake system, Australia.LIMNOLOGY AND OCEANOGRAPHY,54(1),86-100. |
MLA | Costelloe, Justin F.,et al."Groundwater recharge and discharge dynamics in an arid-zone ephemeral lake system, Australia".LIMNOLOGY AND OCEANOGRAPHY 54.1(2009):86-100. |
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