TY JOUR TI Activity of Typhoons in the Spratly Archipelago (the South China Sea) KW South China Sea KW Spratly Archipelago KW tropical cyclones KW typhoons JO Russian Journal of Earth Sciences AU Le, M.D. AU Vlasova, G.A. AU Lebedev, S.A. AU Pham, H.S. AU Nguyen, D.T. AU Nguyen, T.V. AU Ho, T.V. PY 2025 IS 25 PB Geophysical Center of the Russian Academy of Sciences