Tadashi Yokoyama

T. Yokoyama, Y. Inkyo, M. Kaibori (2024) Characteristics of brown zone formed by weathering around fracture in the Hiroshima granite and estimation of iron source for iron oxide precipitation. Geochemical Journal, 58, 204-216.

T. Yokoyama and Y. Matsukura (2006) Field and laboratory experiments on weathering rates of granodiorite: Separation of chemical and physical processes. Geology, 34, 809-812.

T. Yokoyama and S. Nakashima (2005) Color development of iron oxides during rhyolite weathering over 52,000 years. Chemical Geology, 219, 309-320.

T. Yokoyama and J. F. Banfield (2002) Direct determinations of the rates of rhyolite dissolution and clay formation over 52,000 years and comparison with laboratory measurements. Geochimica et Cosmochimica Acta, 66, 2665-2681.

T. Yokoyama and N. Nishiyama (2020) Dissolution of minerals driven by the wetting film in rock pores: Comparison of silicates and carbonates. ACS Earth and Space Chemistry, 4, 1920-1930.

N. Nishiyama and T. Yokoyama (2013) Does the reactive surface area of sandstone depend on water saturation?--The role of reactive-transport in water film. Geochimica et Cosmochimica Acta, 122, 153-169.

T. Yokoyama (2013) Characterization of the reaction and transport properties of porous rhyolite and its application to the quantitative understanding of the chemical weathering rate, Geochimica et Cosmochimica Acta, 118, 295-311

T. Yokoyama, S. Shintaku, N. Nishiyama (2023) Change in size distribution of porewater and entrapped air with progression of water infiltration in sandstone. Journal of Mineralogical and Petrological Sciences, 118.

T. Yokoyama, M. Yorimoto, N Nishiyama (2020) Flow path selection during capillary rise in rock: Effects of pore branching and pore radius variation. Transport in Porous Media, 135, 79-99.

Y. Tsunazawa, T. Yokoyama and N. Nishiyama (2016) An experimental study on the rate and mechanism of capillary rise in sandstone. Progress in Earth and Planetary Science, 3, 1-10.

T. Yokoyama, R. Nomura, N. Nishiyama (2023) Size distributions of water and air in rock pores induced by capillary rise: experiments and modeling. Transport in Porous Media, 148, 67-93.

N. Nishiyama and T. Yokoyama (2017) Permeability of porous media: Role of the critical pore size. Journal of Geophysical Research, 122, 1-17.

N. Nishiyama, T. Yokoyama and S. Takeuchi (2012) Size distributions of pore water and entrapped air during drying-infiltration processes of sandstone characterized by water-expulsion porosimetry. Water Resources Research, 48, W09556.

T. Yokoyama and S. Takeuchi (2009) Porosimetry of vesicular volcanic products by a water-expulsion method and the relationship of pore characteristics to permeability. Journal of Geophysical Research, 114, B02201.

T. Yokoyama and H. Sakuma (2018) The effects of charge, polymerization, and cluster size on the diffusivity of dissolved Si species in pore water. Geochimica et Cosmochimica Acta, 224, 301-312.

T. Yokoyama (2013) Diffusivity of dissolved silica in rock pore water at 25°C as characterized by through-diffusion experiments. Water Resources Research, 49, 8299-8309.

T. Yokoyama and S. Nakashima (2005) Diffusivity anisotropy in a rhyolite and its relation to pore structure. Engineering Geology, 80, 328-335.