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Morin, E.; Grodek, T.; Dahan, O.; Benito, G.; Külls, C.; Jacoby, Y.; Van Langenhove, G.; Seely, M.; Enzel, Y. |
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Flood routing and alluvial aquifer recharge along the ephemeral arid Kuiseb River, Namibia |
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2009 |
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Journal of Hydrology |
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368 |
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1-4 |
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262-275 |
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THL @ christoph.kuells @ Morin2009flood |
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26 |
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Klaus, J.; Külls, C.; Dahan, O. |
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Title |
Evaluating the recharge mechanism of the Lower Kuiseb Dune area using mixing cell modeling and residence time data |
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2008 |
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Journal of Hydrology |
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358 |
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3-4 |
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304-316 |
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THL @ christoph.kuells @ Klaus2008evaluating |
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28 |
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Müller, M.; Alaoui, A.; Külls, C.; Leistert, H.; Meusburger, K.; Stumpp, C.; Weiler, M.; Alewell, C. |
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Title |
Tracking water pathways in steep hillslopes by δ18O depth profiles of soil water |
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2014 |
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Journal of hydrology |
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519 |
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340-352 |
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THL @ christoph.kuells @ Mueller2014tracking |
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20 |
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Heaton, T.H.E.; Talma, A.S.; Vogel, J.C. |
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Title |
Origin and history of nitrate in confined groundwater in the western Kalahari |
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Journal Article |
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Year |
1983 |
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Journal of Hydrology |
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62 |
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1 |
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243-262 |
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Data are presented for nitrate, dinitrogen and argon concentrations and 15N14N ratios in groundwater, with radiocarbon ages up to 40,000 yr. for three confined sandstone aquifers in the western Kalahari of South West Africa/Namibia. The nitrate is probably generated within the soil of the recharge areas, and its production rate during the period 3000-40,000 B.P. has remained between 0.5 and 1.6 meq NO−3l−1 of recharge water, with ° 15N between + 4 and + 8‰. Variations in the amount of nitrate and of “excess air” in groundwater recharge are found, and can only reflect changes in the environmental conditions during recharge. They must therefore be caused by the climatic changes that have taken place during the past 25,000 yr. |
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0022-1694 |
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THL @ christoph.kuells @ heaton_origin_1983 |
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95 |
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Author |
Heaton, T.H.E. |
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Title |
Sources of the nitrate in phreatic groundwater in the western Kalahari |
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Year |
1984 |
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Journal of Hydrology |
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67 |
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1 |
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249-259 |
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Elevated levels of nitrate occur in phreatic groundwater in the western Kalahari, Namibia. Nitrate in water containing 0.4–3.1 meq NO−3l−1, of widespread occurrence, has δ15N values in the range +4.9 to +8.0‰, suggesting natural derivation from the soil. The sporadic occurrence of very high levels of nitrate (> 4 meq NO−3l−1), which has δ15N between +9.3 to +18.7‰, reflects pollution derived from animal waste. The importance of considering the possible isotopic effects of denitrification, and the significance of leaching in the nitrogen budget of the Kalahari soil, are also discussed. |
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0022-1694 |
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Call Number |
THL @ christoph.kuells @ Heaton1984249 |
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278 |
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