Dynamics of modulated waves in the spring-block model of earthquake with time delay I. A. Mofor, L. C. Tasse, G. B. Tanekou, M. D. Wamba, R. Kengne, A. Tchagna Kouanou, M. T. Motchongom, D. Afungchui, F. B. Pelap and T. C. Kofane Eur. Phys. J. Plus, 138 3 (2023) 273 Published online: 24 March 2023 DOI: 10.1140/epjp/s13360-023-03863-z