Journal of Environmental Chemical Engineering.
Elsevier Ltd.
Vol. 9.
2021.
Under a priori boundedness conditions of solutions and coefficients, we prove a Hölder stability estimate for an inverse problem of determining two spatially varying zeroth order non-diagonal elements of a coefficient matrix in a one-dimensional fractional diffusion system of half order in time. The proof relies on the conversion of the fractional diffusion system to a system of order 4 in the space variable and the Carleman estimate. © 2021 Walter de Gruyter GmbH, Berlin/Boston.