Haruko Wainwright, PhD | Lawrence Berkeley National Laboratory
TITLENew Roles of Subsurface Flow and Reactive Transport Modeling in Environmental Remediation and Waste Isolation
For nuclear waste repository assessments, there has been a challenge of integrating two models at disparate scales: (1) complex thermal-hydrological-geochemical processes in engineered barrier systems (EBS) around each canister at the scale of meters and (2) overall performance assessment (PA) models at the scale of kilometers, including more than ten thousand canisters. We have developed a reduced-order model to capture the temporal evolution of the distribution coefficient (Kd) as a function of hydrological and geochemical parameters, and to provide Kd into the PA models. This integration allows us to evaluate how the uncertainty in EBS parameters could influence the overall performance of a repository, as well as to identify key parameters that dictate the overall performance.
BIOI am currently a Research Scientist at Lawrence Berkeley National Laboratory. I received MS in nuclear engineering (2006), MA in statistics (2010), and PhD in nuclear engineering (2010) at University of California, Berkeley. My initial research interest was to investigate the environmental impact of nuclear waste and nuclear weapon productions. My PhD dissertation focused on Bayesian geostatistical inverse modeling for subsurface characterization at the uranium-contaminated DOE Hanford site. Since then, I have broadened my research interest to various environmental problems, including Arctic ecosystem responses to climate change, groundwater contamination, and deep-subsurface CO2 storage. In addition to working in many interdisciplinary projects, I am a deputy lead of the site application thrust in the Advanced Simulation Capability for Environmental Management project, leading the site application at the Savannah River Site F-Area. I am also in the leadership team of Institute for Resilient Communities, which aims to prepare communities for radiological and other disasters through research, education and outreach activities.