How significant is the slope of the sea-side boundary for modelling seawater intrusion in coastal aquifers?
- verfasst von
- Thomas Graf, Olaf Kolditz, Rudolf Liedl, Vincent Post, Manfred Walther
- Abstract
Application of numerical models is a common method to assess groundwater resources. The versatility of these models allows consideration of different levels of complexity, but the accuracy of the outcomes hinges upon a proper description of the system behaviour. In seawater intrusion assessment, the implementation of the sea-side boundary condition is of particular importance. We evaluate the influence of the slope of the sea-side boundary on the simulation results of seawater intrusion in a freshwater aquifer by employing a series of slope variations together with a sensitivity analysis by varying additional sensitive parameters (freshwater inflow and longitudinal and transverse dispersivities). Model results reveal a multi-dimensional dependence of the investigated variables with an increasing relevance of the sea-side boundary slope for seawater intrusion (decrease of up to 32%), submarine groundwater discharge zone (reduction of up to 55%), and turnover times (increase of up to 730%) with increasing freshwater inflow or dispersivity values.
- Organisationseinheit(en)
-
Institut für Strömungsmechanik und Umweltphysik im Bauwesen
Leibniz Forschungszentrum FZ:GEO
- Externe Organisation(en)
-
Helmholtz Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt
Technische Universität Dresden
Bundesanstalt für Geowissenschaften und Rohstoffe (BGR)
- Typ
- Artikel
- Journal
- Journal of hydrology
- Band
- 551
- Seiten
- 648-659
- Anzahl der Seiten
- 12
- ISSN
- 0022-1694
- Publikationsdatum
- 03.03.2017
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Gewässerkunde und -technologie
- Ziele für nachhaltige Entwicklung
- SDG 6 – Sauberes Wasser und sanitäre Einrichtungen
- Elektronische Version(en)
-
https://doi.org/10.1016/j.jhydrol.2017.02.031 (Zugang:
Geschlossen)