Yusaku Ohta and Mako Ohzono, Potential for crustal deformation monitoring using a dense cell phone carrier Global Navigation Satellite System network, Earth, Planets and Space 74, 25 (2022). https://doi.org/10.1186/s40623-022-01585-7
Magma reservoir beneath Azumayama Volcano, NE Japan, as inferred from a three-dimensional electrical resistivity model explored by means of magnetotelluric method. Earth Planet Space, 73, 150, doi:10.1186/s40623-021-01451-y.
The 2018 phreatic eruption at Mt. Motoshirane of Kusatsu-Shirane volcano, Japan: eruption and intrusion of hydrothermal fluid observed by a borehole tiltmeter network. Earth Planet Space, 73, 157, doi:10.1186/s40623-021-01475-4.