
Fossilized Dynamics
The Morphodynamics and Quantitative Stratigraphy group at the Department of Earth System Sciences, Yonsei University seeks to advance our understanding of stratigraphic responses to sediment transport processes and imposed boundary conditions in depositional basins. The morphodynamics of the sediment-fluid interface is influenced by both depositional mechanics and environmental controls. Subsurface architecture is a record of the "fossilized" dynamics of this moving boundary. Our research focuses on improving tools for predicting subsurface spatial architecture across a range of scales by linking sediment transport and surface flow dynamics to their time-integrated preservation in depositional systems.
To achieve this, we conduct laboratory experiments to study sedimentation over space and time scales that are often inaccessible in the field, using experimental data to motivate and constrain theoretical models of morphodynamics and depositional patterns. We also apply insight gained from physical and mathematical models to field data, enhancing interpretation of paleoenvironments through the stratigraphic record. In addition, our group integrates remote sensing techniques to analyze terrestrial and planetary surface processes, expanding our research into planetary surface sciences and enabling comparisons between Earth and extraterrestrial sedimentary systems.

Recent
Papers
Wu, C.†, Kim, W., Yang, S., Tsai, F., Nittrouer, J.A., Dong, T., Keum, D.*, and Straub, K.M., 2025, High variability in flood discharge and stage accelerates river mobility: Science Advances, v. 11, no. 48, eadv7637, DOI: 10.1126/sciadv.adv7637
Lee, H.*, Kim, W., Johnson, J., Shin, H., Keum, D., Lee, Y., and Nahm, W-H., 2025, Experimental investigation of water and sediment discharge effects on alluvial fan margin roughness: Journal of Sedimentary Research, v. 95, p. 589-604, DOI: 10.2110/jsr.2024.130.
Shin, H.* and Kim, W., 2025, Spatio-temporal variations on alluvial fan channel width in response to grain size on the channel bed under constant upstream boundary conditions: Scientific Reports, v. 15, 10874, DOI: 10.1038/s41598-025-94465-5

@ Cafe, Han River side

Korean Society of Petroleum and Sedimentary Geology, 2026 Annual meeting.


@ Cafe, Han River side
