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	Author	Külls, C.
	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
	Volume		Issue		Pages
	Keywords
	Abstract
	Address
	Corporate Author				Thesis	Doctoral thesis
	Publisher	Hydrogeologie und Umwelt	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Kuells2003groundwater			Serial	38
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	Author	Dahan, O.; Tatarsky, B.; Enzel, Y.; Külls, C.; Seely, M.; Benito, G.
	Title	Dynamics of flood water infiltration and ground water recharge in hyperarid desert			Type	Journal Article
	Year	2008	Publication	Groundwater	Abbreviated Journal
	Volume	46	Issue	3	Pages	450-461
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher	Blackwell Publishing Inc Malden, USA	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Dahan2008dynamics			Serial	27
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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
	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
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher	Springer, Berlin, Heidelberg	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	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.
	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
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher	Springer, Berlin, Heidelberg	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Voerkelius2003investigations			Serial	40
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	Author	Adolph, G.; KÜlls, C.; Willscheid, A.
	Title	Determination and validation of age structures as an improved measure of hydrological dynamics			Type	Conference Article
	Year	2007	Publication	Geophysical Research Abstracts	Abbreviated Journal
	Volume	9	Issue	08013	Pages
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Adolph2007determination			Serial	58
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	Author	Adolph, G.; Römer, T.; Külls, C.
	Title	Deriving complex groundwater age structure by combining age dating and analytic element modelling			Type	Conference Article
	Year		Publication	G-DAT 2008-Leipzig	Abbreviated Journal
	Volume		Issue		Pages	12
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Adolph2008deriving			Serial	55
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	Author	Külls, C.; Haering, M.; Leistert, H.; Oster, H.
	Title	Hydrological, physical and chemical constraints for groundwater age dating with CFC and SF6			Type	Conference Article
	Year		Publication	G-DAT 2008-Leipzig	Abbreviated Journal
	Volume		Issue		Pages	29
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Kuells2008hydrological			Serial	57
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	Author	Rehm-Berbenni, C.; Druta A.; Åberg, G.; Neguer J.; Külls, C.; Patrizi, G.; Pacha, T.; Kienzle, P.; Bugini, R.; Fiore, M.G.
	Title	Isotope Technologies Applied to the Analysis of Ancient Roman Mortars			Type	Book Whole
	Year	2005	Publication	European Commission	Abbreviated Journal
	Volume		Issue		Pages
	Keywords
	Abstract	Results of the CRAFT Project EVK4 CT-2001-30004
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @			Serial	73
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	Author	Androvitsanea, A.; Fawzy, M.; Fuchs, J.; Külls, C.; Fahlbusch, H.; Heiden, J.
	Title	Hydrologische Bedingungen im Heraion von Samos vom 12. bis 8. Jh. v. Chr. und ihre Bedeutung für die wasserbauliche Infrastruktur			Type	Journal Article
	Year	2018	Publication	Environmental Water Engineering	Abbreviated Journal
	Volume	1	Issue	1	Pages	1-21
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Androvitsanea2018hydrologische			Serial	17
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	Author	Ola, I.; Drebenstedt, C.; Burgess, R.M.; Mensah, M.; Hoth, N.; Okoroafor, P.; Külls, C.
	Title	Assessing petroleum contamination in parts of the Niger Delta based on a sub-catchment delineated field assessment			Type	Journal Article
	Year	2024	Publication	Environmental Monitoring and Assessment	Abbreviated Journal
	Volume	196	Issue	6	Pages	585
	Keywords
	Abstract	The Niger Delta in Nigeria is a complex and heavily contaminated area with over 150,000 interconnected contaminated sites. This intricate issue is compounded by the region’s strong hydrological processes and high-energy environment, necessitating a science-based approach for effective contamination assessment and management. This study introduces the concept of sub-catchment contamination assessment and management, providing an overarching perspective rather than addressing each site individually. A description of the sub-catchment delineation process using the digital elevation model data from an impacted area within the Delta is provided. Additionally, the contamination status from the delineated sub-catchment is reported. Sediment, surface water and groundwater samples from the sub-catchment were analyzed for total petroleum hydrocarbons (TPH) and polycyclic aromatic hydrocarbons (PAHs), respectively. Surface sediment TPH concentrations ranged from 129 to 20,600 mg/kg, with subsurface (2-m depth) concentrations from 15.5 to 729 mg/kg. PAHs in surface and subsurface sediment reached 9.55 mg/kg and 0.46 mg/kg, respectively. Surface water exhibited TPH concentrations from 10 to 620 mg/L, while PAHs ranged from below detection limits to 1 mg/L. Groundwater TPH concentrations spanned 3 to 473 mg/L, with total PAHs varying from below detection limits to 0.28 mg/L. These elevated TPH and PAH levels indicate extensive petroleum contamination in the investigated sediment and water environment. Along with severe impacts on large areas of mangroves and wetlands, comparison of TPH and PAH concentrations with sediment and water quality criteria found 54 to 100% of stations demonstrated exceedances, suggesting adverse biological effects on aquatic and sediment biota are likely occurring.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1573-2959	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	THL @ christoph.kuells @ Ola2024			Serial	290
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