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Axel Schmidt Christina E. Stringer Ulrike Haferkorn Michael Schubert 《Environmental Geology》2009,56(5):855-863
A case study was carried out with the aim to practically test whether estimates of
groundwater discharge rates into dredging lakes can be made via an uncomplicated and
straightforward technique using radon-222 as naturally-occurring groundwater tracer.
Lake Ammelshainer See, a dredging, seepage lake, approximately 25 km east of Leipzig,
Germany, was chosen as the investigation site. In order to evaluate changes in the
spatial and temporal radon-222 patterns in the lake during different stages of stratification, sampling campaigns were conducted
in April 2007 (well mixed stage) and in
May 2007 (thermal stratification stage). Groundwater flow estimates were made using a radon mass balance approach accounting
for all radon fluxes into and out of the lake
and assuming steady-state conditions with respect to these radon fluxes. Once all positive and negative radon fluxes related
to the lake water volume were determined, groundwater discharge was estimated by using the advective radon input and the radon
activity concentration of the pore water as key parameters. The results showed that in case of a lake with a size and shape
of Lake Ammelshainer See (530,000 m2) reasonable groundwater discharge estimates can be made by collection and analyzing just a few water samples and a few samples
from the sediment layer. 相似文献
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奥 陶 系石 灰 岩 是 济宁 煤 田 一 区太 原 组 下 部煤 层 底 板 充水 含 水 层 ,岩 溶 裂隙 发 育 ,富 水 性 较 强,由 于排 泄 条 件差, 天然 状 态下 水质 不 符合 饮用 水标 准 。通 过 群孔 抽 水 试 验,改 变 了地 下 水 的 循环 条 件 ,使 水 质 达 到了 生 活 用 水 导致标 准,为此 区 奥灰 水的 综 合利 用打 下 了基 础。 相似文献
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Impact of geohydrology and neotectonic activity on radon concentration in groundwater of intermontane Doon Valley, Outer Himalaya, India 总被引：1，自引：0，他引：1
Radon concentration was measured in 133 water samples from tubewells, handpumps, dug wells and springs of the Doon Valley,
Outer Himalaya, India. The observed radon values were found to vary from 10 to 154 Bq/l whereas radium in selected water samples
varied from 0.11 to 0.75 Bq/l. Three different clusters of high radon values were observed in the north-western, central and
south-eastern parts of the Doon Valley. These clusters were found to be associated with tectonics (thrust/fault) and associated
uranium mineralization in the area. In general, radon concentration in groundwater was found to be positively correlated with
the depth of the wells, whereas no significant correlation was observed between radon concentration in groundwater and the
water temperature, pH value, conductivity and altitude of the water samples. An attempt has also been made to determine the
nature and extent of aquifers in the Doon Valley on radon concentration in groundwater. The variation in radon concentration
within the groundwater of the study area was found to be controlled by the neotectonic activity and geohydrological processes
that occur in the area. The impact of these activities on radon concentration in groundwater are discussed.
Received: 17 September 1999 · Accepted: 11 April 2000 相似文献
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Environmental characteristics of regional groundwater in relation to fluoride poisoning in North China 总被引：1，自引：0，他引：1
More and more data indicated that high- or low-fluoride-bearing drinking water led to endemic diseases in which fluoride poisoning was caused by high levels of fluoride (fluoride ion content >1.0 mg/I) in drinking water. Fluoride poisoning in North China is characterized by pathological changes of bones and teeth. Much attention has been devoted to the study of fluoride-bearing groundwater in North China because regionally groundwater has been the main source of water supply, and fluoride poisoning has developed to the extent that it affects human health seriously. Results from the studies in North China summarized in this article indicate that regional high-fluoride-bearing groundwater has a regular distribution corresponding with the development of endemic fluoride poisoning and has something to do with paleogeographic and paleoclimatic conditions, geology, and hydrogeology, especially with types of hydrogeochemistry, pH value of groundwater, degree of mineralization, and so forth. High-fluoride-bearing groundwater in relation to fluorosis occurs mainly in North China, and many effective measures have been taken to reduce the fluoride content in drinking water and to cure the disease after analyzing the distribution and environmental characteristics of high-fluoride-bearing groundwater. 相似文献
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鲁北平原深层地下水开发与环境问题 总被引：20，自引：3，他引：20
刘桂仪 《水文地质工程地质》2001,28(3):43-45
鲁北平原在深层地下水开发利用过程中，由于开采地段过于集中在城镇，加上不合理开采等因素，出现了区域性深层地下水超采漏斗不断扩大、部分地段地下水资源枯竭和水质咸化问题严重、重点城镇地面沉降加剧及饮用高氯高碘地下水引发的地方病呈上升趋势等诸多水环境问题。笔者分析了这些问题的分布规律及演化趋势，从地学角度，提出了对策建议。 相似文献