The UNMIX project (see post here) has a next preprint available at arXiv.

For the last couple of months, Daniel Bittner, Steven Mattis, Barbara Wohlmuth, Gabriele Chiogna and I worked intensively on a parameter study of a karst aquifer model modeling discharge behavior of the Kerschbaum spring in Waidhofen a.d. Ybbs. We again exploit the active subspace method for both, a low-dimensional approach to a corresponding Bayesian inverse problem and a global sensitivity analysis.

I want to thank all contributors for their efforts in preparing and discussing this preprint!