Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1029/2020WR028672
Lizenz creative commons licence
Titel (primär) A comparison of six transport models of the MADE-1 experiment implemented with different types of hydraulic data
Autor Zech, A.; Attinger, S.; Bellin, A.; Cvetkovic, V.; Dagan, G.; Dentz, M.; Dietrich, P. ORCID logo ; Fiori, A.; Teutsch, G.
Quelle Water Resources Research
Erscheinungsjahr 2021
Department CHS; GF; MET
Band/Volume 57
Heft 5
Seite von e2020WR028672
Sprache englisch
Topic T5 Future Landscapes
Keywords contaminant transport; heterogeneous aquifers; geostatistics; model comparison; MADE tracer test

Six conceptually different transport models were applied to the MADE-1 field tracer experiment as a first major attempt for model comparison. The objective was to show that complex mass distributions in heterogeneous aquifers can be predicted without calibration of transport parameters - solely making use of structural and flow data. The models differ in their conceptualization of the heterogeneous aquifer structure, computational complexity, and use of conductivity data obtained from various observation methods (Direct Push Injection Logging - DPIL, Grain Size Analysis, Pumping Tests and Flowmeter). They share the same underlying physical transport process of advection by the velocity field solely. Predictive capability is assessed by comparing results to observed longitudinal mass distributions of the MADE-1 experiment. The decreasing mass recovery of the observed plume is attributed to sampling and no physical process like mass transfer is invoked by the models. Measures like peak location and strength are used in comparing the modeled and measured plume mass distribution.

Comparison of models reveals that the predictions of the solute plume agree reasonably well with observations if the models are underlain by a few parameters of close values: mean velocity, a parameter reflecting log-conductivity variability and a horizontal length scale related to conductivity spatial correlation. The robustness of the results implies that conservative transport models with appropriate conductivity upscaling strategies of various observation data provide reasonable predictions of plumes longitudinal mass distribution as long as key features are taken into account.

dauerhafte UFZ-Verlinkung
Zech, A., Attinger, S., Bellin, A., Cvetkovic, V., Dagan, G., Dentz, M., Dietrich, P., Fiori, A., Teutsch, G. (2021):
A comparison of six transport models of the MADE-1 experiment implemented with different types of hydraulic data
Water Resour. Res. 57 (5), e2020WR028672 10.1029/2020WR028672