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  • 1
    Online Resource
    Online Resource
    Ecohydrological Interfaces. (2023)
    Newark :John Wiley & Sons, Incorporated,
    Details
    Keywords: Ecohydrology. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (427 pages)
    Edition: 1st ed.
    ISBN: 9781119489665
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=30786530
    DDC: 577.6
    Language: English
    Note: Intro -- Ecohydrological Interfaces -- Contents -- Preface -- List of Contributors -- Section 1 -- 1 Ecohydrological Interfaces as Hotspots of Ecosystem Processes -- 2 Biological Activity as a Trigger of Enhanced Ecohydrological Interface Activity -- Section 2 -- 3 The Four Interfaces' Components of Riparian Zones -- 4 Organizational Principles of Hyporheic Exchange Flow and Biogeochemical Cycling in River Networks across Scales -- 5 Groundwater-Lake Interfaces -- 6 Coastal-Groundwater Interfaces (Submarine Groundwater Discharge) -- Section 3 -- 7 Identifying and Quantifying Water Fluxes at Ecohydrological Interfaces -- 8 Heat as a Hydrological Tracer -- 9 Sampling at Groundwater-Surface Water Interfaces -- 10 Automated Sensing Methods for Dissolved Organic Matter and Inorganic Nutrient Monitoring in Freshwater Systems -- 11 Tracing Hydrological Connectivity with Aerial Diatoms -- 12 Measurement of Metabolic Rates at the Sediment-Water Interface Using Experimental Ecosystems -- 13 Using Diel Solute Signals to Assess Ecohydrological Processing in Lotic Systems -- 14 Evolving Molecular Methodologies for Monitoring Pathogenic Viruses in Ecohydrological Interfaces -- Section 4 -- 15 Global Environmental Pressures -- 16 Restoring the Liver of the River: Actionable Research Insights to Guide the Restoration of the Hyporheic Zone for the Improvement of Water Quality -- Index -- EULA.
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  • 2
    Online Resource
    Online Resource
    Thermal and Current-Induced Magnetization Switching of Fe/W(110) Nanoislands Investigated by Spin-Polarized Scanning Tunneling Microscopy. (2009)
    Göttingen :Cuvillier Verlag,
    Details
    Keywords: Scanning tunneling microscopy. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (105 pages)
    Edition: 1st ed.
    ISBN: 9783736930346
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=5019672
    DDC: 502.82499999999999
    Language: English
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  • 3
    Online Resource
    Online Resource
    Endolithic Algae Affect Modern Coral Carbonate Morphology and Chemistry (2019)
    Lausanne : Frontiers Media | Kiel : Universitätsbibliothek
    Details Availability
    In: Frontiers in Earth Science, 7 (2019), 304, 2296-6463
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (19 Seiten) , Illustrationen
    ISSN: 2296-6463
    URL: https://doi.org/10.3389/feart.2019.00304
    URL: https://nbn-resolving.org/urn:nbn:de:gbv:8-mods-2020-00087-5
    URL: https://macau.uni-kiel.de/receive/macau_mods_00000367
    URN: urn:nbn:de:gbv:8-mods-2020-00087-5
    Language: English
    Note: DOI der ursprünglichen Veröffentlichung: 10.3389/feart.2019.00304
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  • 4
    Online Resource
    Online Resource
    Effects of microbial activity on marine carbonates (2012)
    Details Availability
    Keywords: Hochschulschrift
    Description / Table of Contents: Calcium carbonates (CaCO32-­‐) belong to the most common mineral groups within the marine realm. In this thesis interactions between marine microbes and carbonate stability are investigated in depth. Microbial biofilms are analyzed at high resolution regarding their functions in element and isotopic fractionation. In addition, calcite dissolution experiments were carried out to quantify the effect of aerobic methane oxidizing bacteria. Carbonate precipitation rates in marine sediments often serve as a fitting parameter for numerical modeling approaches to constrain. 45Ca and 14C-bicarbonate incubation experiments were carried out to quantify ongoing calcification in natural sediment slurries. During a research cruise rates of anaerobic methane oxidation and sulfate reduction were determined for the first time using radiotracers. The obtained rates were combined with carbonate isotopic signatures to elucidate local variations of fluid advection.
    Type of Medium: Online Resource
    Pages: Online-Ressource
    URL: http://nbn-resolving.de/urn:nbn:de:gbv:8-diss-91984
    URL: http://d-nb.info/102687727X/34
    URL: http://macau.uni-kiel.de/receive/dissertation_diss_00009198
    URN: urn:nbn:de:gbv:8-diss-91984
    DDC: 577.7144
    Language: English
    Note: Kiel, Univ., Diss., 2012
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  • 5
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    Impact of Flow Alteration and Temperature Variability on Hyporheic Exchange (2021)
    Details
    Publication Date: 2021-12-03
    Description: Coupled groundwater flow and heat transport within hyporheic zones extensively affect water, energy, and solute exchange with surrounding sediments. The local and cumulative implications of this tightly coupled process strongly depend on characteristics of drivers (i.e., discharge and temperature of the water column) and modulators (i.e., hydraulic and thermal properties of the sediment). With this in mind, we perform a systematic numerical analysis of hyporheic responses to understand how the temporal variability of river discharge and temperature affect flow and heat transport within hyporheic zones. We identify typical time series of river discharge and temperature from gauging stations along the headwater region of Mississippi River Basin, which are characterized by different degrees of flow alteration, to drive a physics-based model of the hyporheic exchange process. Our modeling results indicate that coupled groundwater flow and heat transport significantly affects the dynamic response of hyporheic zones, resulting in substantial differences in exchange rates and characteristic time scales of hyporheic exchange processes. We also find that the hyporheic zone dampens river temperature fluctuations increasingly with higher frequency of temperature fluctuations. This dampening effect depends on the system transport time scale and characteristics of river discharge and temperature variability. Furthermore, our results reveal that the flow alteration reduces the potential of hyporheic zones to act as a temperature buffer and hinders denitrification within hyporheic zones. These results have significant implications for understanding the drivers of local variability in hyporheic exchange and the implications for the development of thermal refugia and ecosystem functioning in hyporheic zones.
    Keywords: 551.48 ; hyporheic exchange ; numerical analysis
    Language: English
    Type: map
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