WRRC Water Seminar
October 18, 3:00pm - 4:00pmMānoa Campus, POST 723

Subsurface characterization with an application to coastal aquifer characterization
Jonghyun Harry Lee, Assistant Professor in Civil and Environmental Engineering and WRRC, University of HawaiÊ»i at MÄnoa.
Abstract
Recent advances in computational resources and sensor technology allow multi-physics simulation of subsurface properties and open up a new opportunity to characterize unknown subsurface parameters at small scale. However, identification of unknown parameters such as subsurface permeability becomes more computationally challenging than ever with expensive high-fidelity simulations and big environmental data assimilation. In this talk, I will introduce numerical tools that can accelerate the estimation process without much loss of accuracy. Then, I will present a coastal aquifer permeability estimation application and report that integration with coupled flow and transport models can improve characterization results significantly even with sparse noisy pressure observations. Compared to typical aquifer characterization necessarily with joint flow and transport data sets for better results, pressure or concentration data alone in coupled system might be enough to obtain reliable subsurface images, which help design an optimal sampling network for coastal aquifer characterization.
Bio
Jonghyun Harry Lee is an assistant professor in Civil and Environmental Engineering and WRRC at the university of Hawaii at Manoa. Prior to the appointment, he was a postdoc scholar in Civil and Environmental Engineering at Stanford University. He received his B.S. in Civil, Urban and Geosystem Engineering from Seoul National University in 2007, his M.S. in Civil and Environmental Engineering from Colorado State University in 2009, and his PhD in Civil and Environmental Engineering from Stanford University in 2014. His research focuses on the development of integrated computational tools to perform large-scale predictive simulation in high-performance computing environment, fast and scalable parameter estimation with uncertainty quantification using big environmental data, and cost optimization with data-worth analysis for civil and environmental engineering projects such as managed aquifer recharge and recovery, contaminant remediation and real-time near-shore bathymetry identification.
Event Sponsor
Water Resources Research Center, Mānoa Campus
More Information
(808) 956-3097, wrrc@hawaii.edu
Wednesday, October 18 |
|
9:00am |
History Final Oral Mānoa Campus, Sakamaki, Rm. A-201
|
10:00am |
Grad Fair - Fall 2017 Mānoa Campus, Manoa Bookstore
|
11:30am |
Veteran Student Services Workshops: How to be a GI Bill Ninja Mānoa Campus, Kuykendall 106 Events Room
|
11:30am |
Intellectual Property for Academia Mānoa Campus, UH Manoa iLab (Building 37)
|
12:00pm |
Art + Shenanigans in the Era of Trump Mānoa Campus, Burns 2118
|
1:00pm |
Career Day Mānoa Campus, Campus Center Ballroom
|
1:30pm |
Geology & Geophyiscs Final Orals Mānoa Campus, POST 723
|
2:00pm |
Professional-In-Residence Mānoa Campus, Shidler College of Business, Room E-402
|
3:00pm |
Ocean and Resources Engineering Seminar Mānoa Campus, Watanabe 112
|
3:00pm |
WRRC Water Seminar Mānoa Campus, POST 723
|
3:30pm |
Russian Club is making propaganda Mānoa Campus, Moore Hall 252
|
5:30pm |
The MCAT Mānoa Campus, Webster Hall 103
|