It is often viewed that soils are comprised of static organic matter and inorganic minerals that are subject to hydrological, chemical and biological processes. However, biogeochemical processes of minerals and organic matter and their interactions occur as they physically move on the earth surface at the wide range of spatial and temporal scales. My research goal is to quantitatively integrate the interactions among rocks, minerals, and organic matter in motion and to use this understanding to define and resolve fundamental questions in the geochemical and geomorphic evolution of landscapes and regional to global biogeochemical cycles. Currently, I am studying carbon cycle and weathering in the Chippewa National Forest in Northern Minnesota, Sierra Nevada in California, and the Piedmont in Pennsylvania and Delaware.
Hurst, M. D., Mudd, S.M., Walcott, R., Attal, Yoo, K., (2012). Journal of Geophysical Research, Using hilltop curvature to predict erosion rates. VOL. 117, F02017, doi:10.1029/2011JF002057
Yoo, K., J. Ji*, A. Aufdenkampe, J. Klaminder, (2011), Rates of Soil Mixing and Associated Carbon Fluxes in a Forest vs. Tilled Agricultural Field: Implications for Modelling the Soil Carbon Cycle. Journal of Geophysical Research, 116, G01014, doi:10.1029/2010JG001304.
Mudd, S.M. and Yoo, K. (2010). Reservoir theory for studying the geochemical evolution of soils. Journal of Geophysical Research. 115, F03030, doi:10.1029/2009JF001591. Both authors equally contributed to the manuscript
Yoo, K. S.M. Mudd, J. Sanderman, R. Amundson, A. Blum, (2009), Spatial patterns and controls of soil chemical weathering rates along a transient hillslope, Earth and Planetary Science Letters. 288, 184-193, doi:10.1016/j.epsl.2009.09.021.
Klaminder, J.*, K. Yoo, and R. Giesler, (2009), Soil carbon accumulation in the dry tundra: Important role played by precipitation, J. Geophys. Res., 114, G04005, doi:10.1029/2009JG000947.
Yoo, K., S.M. Mudd, (2008), Toward process-based modeling of geochemical soil formation across diverse landforms: A new mathematical framework, Geoderma, doi:10.1016/j.geoderma.2008.05.029.
Yoo K. and S.M. Mudd, (2008), The Discrepancy between Mineral Residence Time and Soil Age: Implications for the Interpretation of Chemical Weathering Rates, Geology, v.36; no 1, 0.35-38 doi: 10.1130/G24285A.
Yoo, K., R. Amundson, A. M. Heimsath, W. E. Dietrich, and G. H. Brimhall, (2007), Integration of geochemical mass balance with sediment transport to calculate rates of soil chemical weathering and transport on hillslopes, Journal of Geophysical Research, 112, F02013, doi:10.1029/2005JF000402.
Yoo K., R. Amundson, AM Heimsath, WE Dietrich, (2005a), Process-based model linking pocket gopher (Thomomys bottae) activity to sediment transport and soil thickness, Geology, 33 (11): 917-920 NOV 2005.
Yoo K., R. Amundson, AM Heimsath, WE Dietrich, (2005b), Erosion of upland hillslope soil organic carbon: Coupling field measurements with a sediment transport model, Global Biogeochemical Cycles 19 (3): Art. No. GB3003.