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Author Heaton, T.H.E.; Talma, A.S.; Vogel, J.C. url  openurl
  Title Origin and history of nitrate in confined groundwater in the western Kalahari Type Journal Article
  Year 1983 Publication Journal of Hydrology Abbreviated Journal  
  Volume 62 Issue 1 Pages 243-262  
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  Abstract 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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  ISSN 0022-1694 ISBN Medium  
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  Notes Approved no  
  Call Number THL @ christoph.kuells @ Heaton1983243 Serial 282  
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Author Doulgeris, C.; Tziritis, E.; Pisinaras, V.; Panagopoulos, A.; Külls, C. openurl 
  Title Prediction of seawater intrusion to coastal aquifers based on non-dimensional diagrams Type Conference Article
  Year 2020 Publication EGU Geophysical Abstracts Abbreviated Journal  
  Volume Issue Pages 4073  
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  Call Number THL @ christoph.kuells @ Doulgeris2020prediction Serial 41  
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Author Leibundgut, C.; Maloszewski, P.; Külls, C. url  doi
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  Title Tracers in Hydrology Type Book Whole
  Year 2009 Publication Abbreviated Journal  
  Volume Issue 1. Ed. Pages  
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  Publisher John Wiley & Sons, Ltd Place of Publication Editor  
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  Call Number THL @ christoph.kuells @ Leibundgut2009tracers Serial 37  
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Author Külls, C. pdf  url
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  Title Groundwater of the North-Western Kalahari, Namibia: estimation of recharge and quantification of the flow system Type Book Whole
  Year 2001 Publication Hydrogeologie und Umwelt Abbreviated Journal  
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  Corporate Author Thesis Doctoral thesis  
  Publisher Hydrogeologie und Umwelt Place of Publication Editor  
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  Call Number THL @ christoph.kuells @ Kuells2003groundwater Serial 38  
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Author Döll, P.; Krol, M.; Fuhr, D.; Gaiser, T.; Herfort, J.; Höynck, S.; Jaeger, A.; Külls, C.; Mendiondo, E.M.; Printz, A.; others url  openurl
  Title Integrated scenarios of regional development in Ceará and Piauí Type Book Chapter
  Year 2003 Publication Global Change and Regional Impacts Abbreviated Journal  
  Volume Issue Pages 19-41  
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  Publisher Springer, Berlin, Heidelberg Place of Publication Editor  
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  Call Number THL @ christoph.kuells @ Doll2003integrated Serial 39  
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Author Voerkelius, S.; Külls, C.; Santiago, M.M.F.; Frischkorn, H.; dos Santos Semrau, L.A.; Heinrichs, G.; Gil, M.M.L. url  openurl
  Title Investigations on water management and water quality in Picos/PI and Tauá/CE Type Book Chapter
  Year 2003 Publication Global change and regional impacts Abbreviated Journal  
  Volume Issue Pages 173-184  
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  Publisher Springer, Berlin, Heidelberg Place of Publication Editor  
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  Call Number THL @ christoph.kuells @ Voerkelius2003investigations Serial 40  
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Author Külls, C.; Leibundgut, C.; Schwarz, U.; Schick, A.P. openurl 
  Title Channel infiltration study using dye tracers Type Journal Article
  Year 1995 Publication IAHS Publications-Series of Proceedings and Reports-Intern Assoc Hydrological Sciences Abbreviated Journal  
  Volume 232 Issue Pages 429-436  
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  Publisher Wallingford [Oxfordshire]: IAHS, 1981- Place of Publication Editor  
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  Call Number THL @ christoph.kuells @ Kuells1995channel Serial 36  
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Author Demuth, S.; Külls, C. openurl 
  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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  Publisher Iahs Place of Publication Editor  
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  Call Number THL @ christoph.kuells @ Demuth1997probability Serial 35  
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Author Klock, H.; Külls, C.; Udluft, P. openurl 
  Title Estimation of relative recharge values for the northern Kalahari catchment, Namibia Type Journal Article
  Year 2000 Publication Journal of African Earth Sciences Abbreviated Journal  
  Volume 30 Issue 4 Pages 47-48  
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  Call Number THL @ christoph.kuells @ Klock2000estimation Serial 33  
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Author Zagana, E.; Külls, C.; Udluft, P. openurl 
  Title Der Wasserhaushalt des Aliakmonas Type Journal Article
  Year 2000 Publication Vom Wasser Abbreviated Journal  
  Volume 94 Issue Pages 29-39  
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  Call Number THL @ christoph.kuells @ Zagana2000saa Serial 34  
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