Ecological Systems and Devices Annotation << Back REGISTRATION OF NONLINEAR WAVES OF THE "TWO SISTERS", "THREE SISTERS" TYPE G.I. Dolgikh, S.G. Dolgikh, V.V. Ovcharenko, V.A. Chupin, V.A. Shvets, S.V. Yakovenko The article discusses the results of processing and analysis of experimental data obtained on a laser meter of hydrosphere pressure variations when registering variations of hydrosphere pressure at the bottom on the shelf of the Sea of Japan. The main attention is paid to the study of the physical mechanisms of the occurrence of nonlinear hydrophysical disturbances in the range of gravitational and infragravity sea waves belonging to the class of killer waves, whose amplitudes are more than twice the amplitudes of the boundary signals of this range of periods. Classical nonlinear disturbances related to killer waves "one sister", "two sisters", "three sisters" have been detected. Their occurrence is associated with the interaction of gravitational and infragravity sea waves of the recording equipment location zone. During spectral processing of the experimental data obtained, the main modes of wind waves and infragravity sea waves responsible for the formation of the observed killer waves are identified. Keywords: killer waves, "two sisters", "three sisters", the phenomenon of return. DOI: 10.25791/esip.12.2022.1337 Pp. 031-037.