Browsing NORCE vitenarkiv by Author "Guadagnini, Alberto"
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Characterization of conductivity fields through iterative ensemble smoother and improved correlation-based adaptive localization
Xia, Chuan-An; Li, Jiayun; Riva, Monica; Luo, Xiaodong; Guadagnini, Alberto (Peer reviewed; Journal article, 2024)Localization is critical to the effective use of an (iterative) ensemble Kalman filter or ensemble smoother to estimate uncertain quantities of interest. Here, we propose a novel, fully adaptive, correlation-based localization ... -
Data assimilation with multiple types of observation boreholes via the ensemble Kalman filter embedded within stochastic moment equations
Xia, Chuan-An; Luo, Xiaodong; Hu, Bill X.; Riva, Monica; Guadagnini, Alberto (Peer reviewed; Journal article, 2021)We employ an approach based on the ensemble Kalman filter coupled with stochastic moment equations (MEs-EnKF) of groundwater flow to explore the dependence of conductivity estimates on the type of available information ...