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Author  |
Demuth, S.; Külls, C. | ||||
| Title | Probability analysis and regional aspects of droughts in southern Germany | Type | Journal Article | ||
| Year | 1997 | Publication | Sustainability of Water Resources under Increasing Uncertainty | Abbreviated Journal | |
| Volume | Issue | 240 | Pages | 97 | |
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| Notes | Approved | no | |||
| Call Number | THL @ christoph.kuells @ Demuth1997probability | Serial | 35 | ||
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| Author |
Wilson, G.B.; McNeill, G.W. | ||||
| Title | Noble gas recharge temperatures and the excess air component | Type | Journal Article | ||
| Year | 1997 | Publication | Applied Geochemistry | Abbreviated Journal | |
| Volume | 12 | Issue | 6 | Pages | 747-762 |
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| Abstract | The calculation of a groundwater recharge temperature based on the dissolved concentrations of Ne, Ar, Kr and Xe requires a correction for noble gas supersaturation due to excess air entrainment. This entrainment is commonly attributed to the recharge process or to air contamination at the wellhead during sample collection. With the exception of some local studies, most work has concentrated on interpretation of the recharge temperature or quantification of the radiogenic content for palaeoclimatic and dating purposes. The magnitude and source of the excess air is not directly relevant to these studies and so is often ignored. In this work, excess air Ne and other data have been calculated from new and published noble gas data sets for several groundwater systems. For younger groundwaters which have been recharged under one broad climatic regime, the amount of air entrainment increases according to lithology in the order granites, sandstones and limestones respectively. A negative correlation between precipitation and excess air entrainment is identified in at least one aquifer, and some of the mechanisms which may influence the entrainment process are discussed. | ||||
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| ISSN | 0883-2927 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | THL @ christoph.kuells @ Wilson1997747 | Serial | 281 | ||
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