TY JOUR TI ON SOME FEATURES OF ULTRASOUND REFLECTION WATER-SAMPLE IN AN INCLINED FALL (PHYSICAL MODELING) KW rough boundaries KW reflection coefficients KW elastic waves KW physical modeling. JO Russian Journal of Earth Sciences AU Fedin, K.V. AU Lukyanowa, A.. AU Kolesnikov, Y.I. PY 2022 IS 22 PB Geophysical Center of the Russian Academy of Sciences