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  • Munz, Matthias  (2)
  • Rudolph-Mohr, Nicole  (1)
  • 1
    Book
    Book
    Water flow and heat transport modelling at the interface between river and aquifer (2017)
    Potsdam
    Details
    UID:
    gbv_1014324343
    Format: XIII, 123 Seiten , Illustrationen, Diagramme
    Content: The functioning of the surface water-groundwater interface as buffer, filter and reactive zone is important for water quality, ecological health and resilience of streams and riparian ecosystems. Solute and heat exchange across this interface is driven by the advection of water. Characterizing the flow conditions in the streambed is challenging as flow patterns are often complex and multidimensional, driven by surface hydraulic gradients and groundwater discharge. This thesis presents the results of an integrated approach of studies, ranging from the acquisition of field data, the development of analytical and numerical approaches to analyse vertical temperature profiles to the detailed, fully-integrated 3D numerical modelling of water and heat flux at the reach scale. All techniques were applied in order to characterize exchange flux between stream and groundwater, hyporheic flow paths and temperature patterns. The study was conducted at a reach-scale section of the lowland Selke River, characterized by distinctive pool riffle…
    Note: Enthält 3 Publikationen , kumulative Dissertation , Dissertation Universität Potsdam 2017
    Additional Edition: Erscheint auch als Online-Ausgabe Munz, Matthias Water flow and heat transport modelling at the interface between river and aquifer Potsdam, 2018
    Language: English
    Keywords: Oberflächenwasser ; Grundwasser ; Hochschulschrift
    URL: Inhaltsverzeichnis
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Online Resource
    Online Resource
    Water flow and heat transport modelling at the interface between river and aquifer (2018)
    Potsdam
    Details
    UID:
    gbv_1014323061
    Format: 1 Online-Ressource (XIII, 123 Seiten, 7980 KB) , Illustrationen, Diagramme
    Content: The functioning of the surface water-groundwater interface as buffer, filter and reactive zone is important for water quality, ecological health and resilience of streams and riparian ecosystems. Solute and heat exchange across this interface is driven by the advection of water. Characterizing the flow conditions in the streambed is challenging as flow patterns are often complex and multidimensional, driven by surface hydraulic gradients and groundwater discharge. This thesis presents the results of an integrated approach of studies, ranging from the acquisition of field data, the development of analytical and numerical approaches to analyse vertical temperature profiles to the detailed, fully-integrated 3D numerical modelling of water and heat flux at the reach scale. All techniques were applied in order to characterize exchange flux between stream and groundwater, hyporheic flow paths and temperature patterns. The study was conducted at a reach-scale section of the lowland Selke River, characterized by distinctive pool riffle…
    Note: kumulative Dissertation , Dissertation Universität Potsdam 2017
    Additional Edition: Erscheint auch als Druck-Ausgabe Munz, Matthias Water flow and heat transport modelling at the interface between river and aquifer Potsdam, 2017
    Language: English
    Keywords: Oberflächenwasser ; Grundwasser ; Hochschulschrift
    URN: urn:nbn:de:kobv:517-opus4-404319
    URL: Volltext
    URL: https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-404319
    URL: https://d-nb.info/1218601957/34
    URL: kostenfrei
    Library Location Call Number Volume/Issue/Year Availability
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    Online Resource
    Online Access
    UB Potsdam
  • 3
    Online Resource
    Online Resource
    A novel non-invasive optical method for quantitative visualization of pH and oxygen dynamics in soils (2013)
    Details
    UID:
    gbv_769315410
    Format: Online-Ressource (PDF-Datei: V, 114 S., 4918 KB)
    Content: In soils and sediments there is a strong coupling between local biogeochemical processes and the distribution of water, electron acceptors, acids and nutrients. Both sides are closely related and affect each other from small scale to larger scales. Soil structures such as aggregates, roots, layers or macropores enhance the patchiness of these distributions. At the same time it is difficult to access the spatial distribution and temporal dynamics of these parameter. Noninvasive imaging techniques with high spatial and temporal resolution overcome these limitations. And new non-invasive techniques are needed to study the dynamic interaction of plant roots with the surrounding soil, but also the complex physical and chemical processes in structured soils. In this study we developed an efficient non-destructive in-situ method to determine biogeochemical parameters relevant to plant roots growing in soil. This is a quantitative fluorescence imaging method suitable for visualizing the spatial and temporal pH changes around roots. We adapted the fluorescence imaging set-up and coupled it with neutron radiography to study simultaneously root growth, oxygen depletion by respiration activity and root water uptake. The combined set up was subsequently applied to a structured soil system to map the patchy structure of oxic and anoxic zones induced by a chemical oxygen consumption reaction for spatially varying water contents. Moreover, results from a similar fluorescence imaging technique for nitrate detection were complemented by a numerical modeling study where we used imaging data, aiming to simulate biodegradation under anaerobic, nitrate reducing conditions.
    Note: Potsdam, Universität Potsdam, Diss., 2013
    Additional Edition: Druckausg. Rudolph-Mohr, Nicole A novel non-invasive optical method for quantitative visualization of pH and oxygen dynamics in soils 2013
    Language: English
    Keywords: Hochschulschrift
    URN: urn:nbn:de:kobv:517-opus-66993
    URL: Volltext
    URL: Volltext
    URL: Volltext  (kostenfrei)
    Library Location Call Number Volume/Issue/Year Availability
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    Online Resource
    Fulltext
    UB Potsdam
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