Organic contaminant transport and fate in the subsurface: Evolution of knowledge and understanding

HI Essaid, BA Bekins… - Water Resources Research, 2015 - Wiley Online Library
Toxic organic contaminants may enter the subsurface as slightly soluble and volatile
nonaqueous phase liquids (NAPLs) or as dissolved solutes resulting in contaminant plumes …

Model-data interaction in groundwater studies: Review of methods, applications and future directions

MM Rajabi, B Ataie-Ashtiani, CT Simmons - Journal of hydrology, 2018 - Elsevier
We define model-data interaction (MDI) as a two way process between models and data, in
which on one hand data can serve the modeling purpose by supporting model …

Bayesian geostatistical design: Task‐driven optimal site investigation when the geostatistical model is uncertain

W Nowak, FPJ De Barros… - Water Resources Research, 2010 - Wiley Online Library
Geostatistical optimal design optimizes subsurface exploration for maximum information
toward task‐specific prediction goals. Until recently, most geostatistical design studies have …

Best unbiased ensemble linearization and the quasi‐linear Kalman ensemble generator

W Nowak - Water Resources Research, 2009 - Wiley Online Library
Linearized representations of the stochastic groundwater flow and transport equations have
been heavily used in hydrogeology, eg, for geostatistical inversion or generating conditional …

Unraveling biogeochemical complexity through better integration of experiments and modeling

AJ Siade, BC Bostick, OA Cirpka… - … Science: Processes & …, 2021 - pubs.rsc.org
The evolution of groundwater quality in natural and contaminated aquifers is affected by
complex interactions between physical transport and biogeochemical reactions. Identifying …

Bayesian assessment of the expected data impact on prediction confidence in optimal sampling design

PC Leube, A Geiges, W Nowak - Water Resources Research, 2012 - Wiley Online Library
Incorporating hydro (geo) logical data, such as head and tracer data, into stochastic models
of (subsurface) flow and transport helps to reduce prediction uncertainty. Because of …

Entropy-based experimental design for optimal model discrimination in the geosciences

W Nowak, A Guthke - Entropy, 2016 - mdpi.com
Choosing between competing models lies at the heart of scientific work, and is a frequent
motivation for experimentation. Optimal experimental design (OD) methods maximize the …

A hypothesis‐driven approach to optimize field campaigns

W Nowak, Y Rubin… - Water Resources Research, 2012 - Wiley Online Library
Most field campaigns aim at helping in specified scientific or practical tasks, such as
modeling, prediction, optimization, or management. Often these tasks involve binary …

Probability density functions of hydraulic head and velocity in three‐dimensional heterogeneous porous media

W Nowak, RL Schwede, OA Cirpka… - Water Resources …, 2008 - Wiley Online Library
In this study, we assess probability density functions of hydraulic heads and specific
discharges in three‐dimensional bounded heterogeneous porous media by Monte Carlo …

On the link between contaminant source release conditions and plume prediction uncertainty

FPJ de Barros, W Nowak - Journal of contaminant hydrology, 2010 - Elsevier
The initial width of contaminant plumes is known to have a key influence on expected plume
development, dispersion and travel time statistics. In past studies, initial plume width has …