Interpretation of Signals Recorded by Ocean-Bottom Pressure Gauges during the Passage of Atmospheric Lamb Wave on 15 January 2022

The eruption of the Hunga Tonga–Hunga Ha’apai volcano on 15 January 2022 was first powerful explosive in history to be recorded with high quality by a wide range geophysical equipment. atmospheric Lamb wave caused explosion repeatedly circled Earth and served as one reasons for formation tsunami waves. In this paper, manifestations are analyzed recordings tsunamimeters, i.e., data from DONET DART pressure sensors located area Japanese Islands. work is aimed at studying physics variations ocean floor order develop method isolating free gravity waves records obtained bottom sensors. Within framework shallow water theory, an analysis response layer performed. This combines forced perturbation, amplitude which depends depth ocean, arising result restructuring perturbation submarine slopes. Analytical formulas given energy jump. With aid numerical simulation, finite length slope revealed significantly affect parameters when exceeding 50 km. situ (DONET, DART) confirms validity theoretical concepts presented work. particular, it shown that deep exceed fluctuations wave.