Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1002/2015WR017989
Titel (primär) A new numerical benchmark of a freshwater lens
Autor Stoeckl, L.; Walther, M.; Graf, T.
Quelle Water Resources Research
Erscheinungsjahr 2016
Department ENVINF
Band/Volume 52
Heft 4
Seite von 2474
Seite bis 2489
Sprache englisch
UFZ Querschnittsthemen RU5;
Abstract A numerical benchmark for 2-D variable-density flow and solute transport in a freshwater lens is presented. The benchmark is based on results of laboratory experiments conducted by Stoeckl and Houben (2012) using a sand tank on the meter scale. This benchmark describes the formation and degradation of a freshwater lens over time as it can be found under real-world islands. An error analysis gave the appropriate spatial and temporal discretization of 1 mm and 8.64 s, respectively. The calibrated parameter set was obtained using the parameter estimation tool PEST. Comparing density-coupled and density-uncoupled results showed that the freshwater-saltwater interface position is strongly dependent on density differences. A benchmark that adequately represents saltwater intrusion and that includes realistic features of coastal aquifers or freshwater lenses was lacking. This new benchmark was thus developed and is demonstrated to be suitable to test variable-density groundwater models applied to saltwater intrusion investigations.
dauerhafte UFZ-Verlinkung
Stoeckl, L., Walther, M., Graf, T. (2016):
A new numerical benchmark of a freshwater lens
Water Resour. Res. 52 (4), 2474 - 2489 10.1002/2015WR017989