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Author (down) Oehler, T.; Tamborski, J.; Rahman, S.; Moosdorf, N.; Ahrens, J.; Mori, C.; Neuholz, R.Ã.©; Schnetger, B.; Beck, M.
Title DSi as a Tracer for Submarine Groundwater Discharge Type Journal Article
Year 2019 Publication Frontiers in Marine Science Abbreviated Journal
Volume 6 Issue Pages 563
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Abstract Submarine groundwater discharge (SGD) is an important source of nutrients and metals to the coastal ocean, affects coastal ecosystems, and is gaining recognition as a relevant water resource. SGD is usually quantified using geochemical tracers such as radon or radium. However, a few studies have also used dissolved silicon (DSi) as a tracer for SGD, as DSi is usually enriched in groundwater when compared to surface waters. In this study, we discuss the potential of DSi as a tracer in SGD studies based on a literature review and two case studies from contrasting environments. In the first case study, DSi is used to calculate SGD fluxes in a tropical volcanic-carbonate karstic region (southern Java, Indonesia), where SGD is dominated by terrestrial groundwater discharge. The second case study discusses DSi as a tracer for marine SGD (i.e., recirculated seawater) in the tidal flat area of Spiekeroog (southern North Sea), where SGD is dominantly driven by tidal pumping through beach sands. Our results indicate that DSi is a useful tracer for SGD in various lithologies (e.g., karstic, volcanic, complex) to quantify terrestrial and marine SGD fluxes. DSi can also be used to trace groundwater transport processes in the sediment and the coastal aquifer. Care has to be taken that all sources and sinks of DSi are known and can be quantified or neglected. One major limitation is that DSi is used by siliceous phytoplankton and therefore limits its applicability to times of the year when primary production of siliceous phytoplankton is low. In general, DSi is a powerful tracer for SGD in many environments. We recommend that DSi should be used to complement other conventionally used tracers, such as radon or radium, to help account for their own shortcomings.
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ISSN 2296-7745 ISBN Medium
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Call Number THL @ christoph.kuells @ Oehler2019 Serial 192
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Author (down) Nisi, B.; Raco B.; Dotsika, E.
Title Groundwater Contamination Studies by Environmental Isotopes: A review Type Book Chapter
Year 2014 Publication Environment, Energy and Climate Change I: Environmental Chemistry of Pollutants and Wastes Abbreviated Journal
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Publisher Springer-Verlag Berlin Heidelberg Place of Publication Editor E. Jimenez
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Notes Approved no
Call Number THL @ christoph.kuells @ Serial 186
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Author (down) Neal, C.; Neal, M.; Hughes, S.; Wickham, H.; Hill, L.; Harman, S.
Title Bromine and bromide in rainfall, cloud, stream and groundwater in the Plynlimon area of mid-Wales Type Journal Article
Year 2007 Publication Hydrology and Earth System Sciences Abbreviated Journal
Volume 11 Issue 1 Pages 301-312
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Call Number THL @ christoph.kuells @ hess-11-301-2007 Serial 92
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Author (down) Nas, B.
Title Geostatistical approach to assessment of spatial distribution of groundwater quality Type Journal Article
Year 2009 Publication Polish J. of Environ. Stud. Abbreviated Journal
Volume 18 Issue 6 Pages 1073-1082
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Call Number CUT @ phaedon.kyriakidis @ nas2009 Serial 109
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Author (down) Narany, T.S.; Ramli, M.F.; Aris, A.Z.; Sulaiman, W.N.A.; Juahir, H.; Fakharian, K.
Title Identification of the hydrogeochemical processes in groundwater using classic integrated geochemical methods and geostatistical techniques, in Amol-Babol plain, Iran Type Journal Article
Year 2014 Publication Sci. World J. Abbreviated Journal
Volume 419058, Issue Pages 15
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Call Number CUT @ phaedon.kyriakidis @ narany2014 Serial 117
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