I am a geoscientist thinking about efficient and safe geologic energy storage and waste disposal in the Earth's subsurface.

Research Interest

• Multi-scale multiphysics (Thermo-Hydro-Mechanical-Chemical-Biological) coupling mechanism in geologic media

• Reservoir geomechanics + Multiphase flow + Solute transport

• Area: Geologic hydrogen storage; Geologic oil & gas storage; Geologic carbon sequestration; Nuclear waste disposal; Geothermal energy exploration; Induced/triggered earthquake; Salt cavern storage

• Method: Computational model + Laboratory test + Field observation + Machine learning surrogate

Publications

Published, In Press

1. Chang, K.W.* and T.S.A.Ross (2025), Cyclic loading-unloading impacts on geomechanical stability of multiple salt caverns for underground hydrogen storage, Int. J. Hydrogen Energy, 102:767–777 [link].

2. Chang, K.W.* and T. LaForce (2024), Coupled hydro-thermal flow and radionuclide transport driven by spatial variation of heat-generating radioactive wastes in shale formations, Tunn. Undergr. Space Technol., 146:105676 [link].

3. Yoon, W.W., Han, W.S.*, Hwang, J., Kim, J.-W., K.W. Chang, and H. Suk (2024), Effect of fracture characteristics on groundwater flow adjacent to high-level radioactive waste repository, J. Hydrol., 629:130593 [link].

4. Debusschere, B.J.*, D.T. Seidle, T.M. Berg, K.W. Chang, R.C. Rosie, L.P. Swiler, and P.E. Mariner (2023), Machine learning surrogates of a fuel matrix degradation process model for performance assessment of a nuclear waste repository, Nucl. Technol., 209(9):1295-1318 [link].

5. Chang, K.W.* and H. Yoon (2023), Modeling-based assessment of deep seismic potential induced by geologic carbon storage, Seismol. Res. Lett., 49(3):1447-1454 [link].

6. Chang, K.W.*, T. LaForce, and L.L. Price (2022), Hydro-thermal impacts on near-field flow and transport in a shale-hosted nuclear waste repository, Tunn. Undergr. Space Technol., 130:104765 [link].

7. Chang, K.W.*, H. Yoon, and M.J. Martinez (2022), Potential seismicity along basement faults induced by geological carbon sequestration, Geophys. Res. Lett., 49(13):e2022GL098721 [link].

8. Beskardes, G.D.*, C.J. Weiss, K.L. Khulman, and K.W. Chang (2022), Finite element modeling of diffusive flow in fractured porous media by using hierarchical material properties, Water Resour. Res., 58(2):e2020WR029510 [link].

9. Chang, K.W.* and H. Yoon (2022), Permeability-controlled migration of induced seismicity to deeper depths near Venus in North Texas, Scientific Reports, 12:1382 [link].

∗Featured in Spring Nature Collection of “Induced Seismicity”

10. Chang, K.W.*, M. Nole, and E.R. Stein (2021), Reduced order modeling of near-field THMC coupling processes for nuclear waste repository in shale, Comput. Geotech., 138:104326 [link].

11. Chang, K.W.* and H. Yoon (2021), Mitigating injection-induced seismicity along basement faults by extraction: Application to 2016–2018 Pohang earthquakes, JGR Solid Earth, 126(4):e2020JB021486 [link].

12. Chang, K.W.* and H. Yoon (2020), Hydro-mechanical controls on the spatio-temporal patterns of injection-induced seismicity in different fault architecture: Implication for 2013–2014 Azle earthquakes, JGR Solid Earth, 125(9):e2020JB020402 [link].

13. Chang, K.W.*, H. Yoon, Y. Kim, and M.Y. Lee (2020), Operational and geological controls of coupled poroelastic stressing and pore-pressure accumulation along faults: Induced earthquakes in Pohang, South Korea, Scientific Reports, 10:2073 [link].

∗Featured in 2020 Scientific Reports Top 100 in Earth Science

14. Wen, B.*, K.W. Chang, and M.A. Hesse (2018), Rayleigh-Darcy convection with hydrodynamic dispersion, Phys. Rev. Fluids, 3(12):123801 [link].

15. Chang, K.W.* and H. Yoon (2018), 3-D modeling of induced seismicity along multiple faults: magnitude, rate, and location in the poroelasticity system, JGR Solid Earth, 123(11):9866-9883 [link].

16. Chang, K.W.*, H. Yoon and M.J. Martinez (2018), Seismicity rate surges after shut-in: poroelastic response to fluid injection, BSSA, 108(4):1889-1904 [link].

17. Chang, K.W.* and P. Segall (2017), Reduction of injection-induced pore-pressure and stress in basement rocks due to basal sealing layers, Pure Appl. Geophys., 174(7):2649-2661 [link].

18. Chang, K.W.* and P. Segall (2016), Seismicity on basement faults induced by simultaneous fluid injection-extraction, Pure Appl. Geophys., 173(8):2621-2636 [link].

19. Chang, K.W.* and P. Segall (2016), Injection induced seismicity on basement faults including poroelastic stressing, JGR Solid Earth, 121(4):2708-2726 [link].

∗Featured in AGU Journal Collection of Hydraulic Fracturing: Induced Seismicity

20. Woods, A.W.*, M.A. Hesse, R. Berkowitz, and K.W. Chang, (2015), Multiple steady states in exchange flows across faults and the dissolution of CO2, J. Fluid Mech., 769:229-241 [link].

21. Chang, K.W.*, M.A. Hesse and J.-P. Nicot (2013), Reduction of lateral pressure propagation due to dissipation into ambient mudrocks during geological carbon dioxide storage, Water Resour. Res., 49(5):2573-2588 [link].

In Revision, Under Review

1. Chang, K.W.* and T.S.A.Ross (202x), Low-stress creep behavior of multiple salt caverns under cyclic operations, Int. J. Rock Mech. Min. Sci., in revision.

In Preparation

1. Jeon, I. K., Y.-R. Kim*, and K.W. Chang (202x), Multi-scale characterization of Avery Island rock salt using nano-indentation and X-ray tomography, Rock Mech. Rock Eng., in preparation.

kchang@sandia.gov