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Author Külls, C.J.; Ritter, M.
Title Deuterium excess anomaly of precipitation in Svalbard Type Conference Article
Year 2010 Publication American Geophysical Union Abbreviated Journal
Volume (down) 2010 Issue Pages 51
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Call Number THL @ christoph.kuells @ Kuells2010deuterium Serial 50
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Author Külls, C.J.; Zabori, J.
Title On the representation of hydrological processes in current SVAT schemes-comparison and perspective Type Conference Article
Year 2009 Publication American Geophysical Union Fall Meeting Abbreviated Journal
Volume (down) 2009 Issue Pages 14
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Call Number THL @ christoph.kuells @ Kuells2009representation Serial 52
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Author Müller, M.; Alaoui, A.; Külls, C.; Leistert, H.; Meusburger, K.; Stumpp, C.; Weiler, M.; Alewell, C.
Title Tracking water pathways in steep hillslopes by δ18O depth profiles of soil water Type Journal Article
Year 2014 Publication Journal of hydrology Abbreviated Journal
Volume (down) 519 Issue Pages 340-352
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Publisher Elsevier Place of Publication Editor
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Notes Approved no
Call Number THL @ christoph.kuells @ Mueller2014tracking Serial 20
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Author Jin, Z.; Külls, C.
Title FDM based OA-ICOS for high accuracy 13C quantification in gaseous CO2 Type Journal Article
Year 2020 Publication Earth and Environmental Science Abbreviated Journal EES
Volume (down) 446 Issue 3 Pages 032061
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Series Editor Series Title IOP Conference Series Abbreviated Series Title
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Call Number THL @ christoph.kuells @ Jin2020fdm Serial 16
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Author Morin, E.; Grodek, T.; Dahan, O.; Benito, G.; Külls, C.; Jacoby, Y.; Van Langenhove, G.; Seely, M.; Enzel, Y.
Title Flood routing and alluvial aquifer recharge along the ephemeral arid Kuiseb River, Namibia Type Journal Article
Year 2009 Publication Journal of Hydrology Abbreviated Journal
Volume (down) 368 Issue 1-4 Pages 262-275
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Publisher Elsevier Place of Publication Editor
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Notes Approved no
Call Number THL @ christoph.kuells @ Morin2009flood Serial 26
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Author Klaus, J.; Külls, C.; Dahan, O.
Title Evaluating the recharge mechanism of the Lower Kuiseb Dune area using mixing cell modeling and residence time data Type Journal Article
Year 2008 Publication Journal of Hydrology Abbreviated Journal
Volume (down) 358 Issue 3-4 Pages 304-316
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Publisher Elsevier Place of Publication Editor
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Call Number THL @ christoph.kuells @ Klaus2008evaluating Serial 28
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Author Klock, H.; Külls, C.; Udluft, P.
Title Quantification of Groundwater Recharge-Estimating recharge values using hydrochemical and geological data: A case study from the semiarid Kalahari catchment of northern Namibia Type Journal Article
Year 2001 Publication IAHS Publications-Series of Proceedings and Reports-Intern Assoc Hydrological Sciences Abbreviated Journal
Volume (down) 269 Issue Pages 25-32
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Corporate Author Thesis
Publisher Wallingford [Oxfordshire]: IAHS, 1981- Place of Publication Editor
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Call Number THL @ christoph.kuells @ Klock2001 Serial 32
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Author Külls, C.; Adar, E.M.; Udluft, P.
Title Tracer Studies and Modelling of Regional Groundwater Systems-Resolving patterns of groundwater flow by inverse hydrochemical modelling in a semiarid Kalahari basin Type Journal Article
Year 2000 Publication IAHS Publications-Series of Proceedings and Reports-Intern Assoc Hydrological Sciences Abbreviated Journal
Volume (down) 262 Issue Pages 447-452
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Publisher Wallingford [Oxfordshire]: IAHS, 1981- Place of Publication Editor
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Notes Approved no
Call Number THL @ christoph.kuells @ Kuells2006 Serial 31
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Author Külls, C.; Leibundgut, C.; Schwarz, U.; Schick, A.P.
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 (down) 232 Issue Pages 429-436
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Publisher Wallingford [Oxfordshire]: IAHS, 1981- Place of Publication Editor
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Notes Approved no
Call Number THL @ christoph.kuells @ Kuells1995channel Serial 36
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Author Christofi, C.; Bruggeman, A.; Külls, C.; Constantinou, C.
Title Isotope hydrology and hydrogeochemical modeling of Troodos Fractured Aquifer, Cyprus: The development of hydrogeological descriptions of observed water types Type Journal Article
Year 2020 Publication Applied Geochemistry Abbreviated Journal
Volume (down) 123 Issue Pages 104780
Keywords Isotope hydrology, Hydrogeochemical modelling, Hydrochemistry, Kargiotis, Troodos
Abstract The origin of groundwater recharge and subsequent flow paths are often difficult to establish in fractured, multi-lithological, and highly compartmentalized aquifers such as the Troodos Fractured Aquifer (TFA). As the conjunctive use of stable isotopes and hydrogeochemical data provides additional information, we established a monitoring network for stable isotopes in precipitation in Cyprus. The local meteoric water line, altitude effect and seasonal variation of stable isotopes in precipitation are derived from monitoring data. Stable isotopes and hydrogeochemical data are combined to model water-rock interactions and groundwater evolution along a complete ophiolite sequence. As a result a generic hydrogeologic description for the observed water types is developed. Isotope hydrology was applied in conjunction with hydrogeochemical modelling in Kargiotis Watershed, a major north-south transect of the TFA. PHREEQC was used for hydrogeochemical modelling to establish generic descriptions for observed water types. Mean precipitation-weighted values from 16 monitoring stations were used to calculate the Local Meteoric Water Line (LMWL), which was found to be equal to δ2H = (6.58 ± 0.13)*δ18O + (12.64 ± 0.91). A general decrease of 1.22‰ for δ2H and 0.20‰ for δ18O in precipitation was calculated per 100 m altitude. A generic groundwater evolution path was established: 1. Na/MgClHCO3, 2. MgHCO3, 3. Ca/MgHCO3, 4. Ca/MgNaHCO3, 4a. MgNa/CaHCO3/Cl, 5. NaMg/CaHCO3/Cl, 6. NaHCO3, 7. Na/MgHCO3SO4, 8. NaSO4Cl/HCO3. Hydrogeologic descriptions, consisting of groundwater origin, flow path and possible active water-rock processes, have been realised for the observed water types. The first two water types occur in serpentine and ultramafic-gabbro springs. Type 3 waters represent early stages of recharge and/or short flow paths, in gabbro whereas types 4 and 5 are typical for further percolating waters in gabbro and diabase. Water types 6 and 7 occur both in diabase and in the basal group and represent the regional flow. Water type 8 is the end member of regional, upwelling groundwater in the basal group. The presented descriptions and methods have practical applications in groundwater exploration, characterization, and protection. The methodology can be applied in other complex aquifer systems.
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Language english Summary Language english Original Title
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ISSN 0883-2927 ISBN Medium
Area Cyprus Expedition Conference
Notes Approved no
Call Number THL @ christoph.kuells @ Christofi2020104780 Serial 76
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