Comparative assessment of two global sensitivity approaches considering model and parameter uncertainty

H Dai, Y Liu, A Guadagnini, S Yuan… - Water Resources …, 2024 - Wiley Online Library
Abstract Global Sensitivity Analysis (GSA) is key to assisting appraisal of the behavior of
hydrological systems through model diagnosis considering multiple sources of uncertainty …

[HTML][HTML] Uncertainty quantification of radionuclide migration in fractured granite

S Jia, Z Dai, Z Yang, Z Du, X Zhang… - Journal of Cleaner …, 2022 - Elsevier
Deep geological disposal is a widely accepted approach for safe management and long-
term disposal of high-level radioactive waste (HLW). However, high uncertainty associated …

Uncertainty analysis for seawater intrusion in fractured coastal aquifers: Effects of fracture location, aperture, density and hydrodynamic parameters

B Koohbor, M Fahs, B Ataie-Ashtiani, B Belfort… - Journal of …, 2019 - Elsevier
In this study we use polynomial chaos expansion (PCE) to perform uncertainty analysis for
seawater intrusion (SWI) in fractured coastal aquifers (FCAs) which is simulated using the …

Global sensitivity analyses of multiple conceptual models with uncertain parameters driving groundwater flow in a regional-scale sedimentary aquifer

EB Janetti, L Guadagnini, M Riva, A Guadagnini - Journal of Hydrology, 2019 - Elsevier
We rely on various Global Sensitivity Analysis (GSA) approaches to detect the way uncertain
parameters linked to diverse conceptual geological models influence spatial distributions of …

Study of the catastrophic process of water–sand inrush in a deep buried stope with thin bedrock

T Li, Y Tang, L Li, H Hu, Z Li, J He, B An - Water, 2023 - mdpi.com
Taking the 14,030 panel of Zhaogu No. 2 coal mine as its research object, this paper studies
the evolution characteristics of the developing height, propagation track and caving arch …

Sensitivity of meteorological-forcing resolution on hydrologic variables

FZ Maina, ER Siirila-Woodburn… - Hydrology and Earth …, 2020 - hess.copernicus.org
Projecting the spatiotemporal changes in water resources under a no-analog future climate
requires physically based integrated hydrologic models which simulate the transfer of water …

Identifying stagnation zones and reverse flow caused by river‐aquifer interaction: An approach based on polynomial chaos expansions

P Merchán‐Rivera, B Wohlmuth… - Water Resources …, 2021 - Wiley Online Library
Fluctuating stream stages and peak‐flow events can significantly influence the interactions
between streams and aquifers and modify the hydraulic gradient, the flux exchange and the …

Review and comparison of two meta-model-based uncertainty propagation analysis methods in groundwater applications: polynomial chaos expansion and Gaussian …

MM Rajabi - Stochastic environmental research and risk …, 2019 - Springer
Gaussian process emulation (GPE) and polynomial chaos expansion (PCE) are tools for
meta-model-based uncertainty propagation analysis (UPA) that have gained increasing …

Machine learning accelerates parameter optimization and uncertainty assessment of a land surface model

Y Sawada - Journal of Geophysical Research: Atmospheres, 2020 - Wiley Online Library
The performance of land surface models (LSMs) significantly affects the understanding of
atmospheric and related processes. Many of the LSMs' soil and vegetation parameters were …

Uncertainty and sensitivity analysis of radionuclide migration through fractured granite aquifer

Z Du, Z Dai, Z Yang, S Jia - Journal of Environmental Radioactivity, 2022 - Elsevier
The radionuclide migration in the high-level radioactive waste (HLW) disposal is usually
predicted by numerical simulations for risk analysis of radionuclide contamination in a large …