Physicochemical or geochemical

• Melekestsev, I. V., Kartasheva, E. V., Kirsanova, T. P., Kuz’mina, A. A., (2011), Water contaminated by fresh tephra as a natural hazard factor: The 2008–2009 eruption of Koryakskii Volcano, Kamchatka, Journal of Volcanology and Seismology, 5(1), 17-30, 10.1134/S0742046311010064