Presentation title: “Weak shear modulus in the acoustic mode parabolic equation”
(The 4th lecture of the series of “Normal modes in 3D shallow-water waveguides: from theory to computational models and applications”)
Presenter: Dr. Sergey B. Kozitskiy
Time: 9:30-11:00 am, July 5, 2018
Location: Academic lecture hall on the 15th floor of the Underwater Acoustic Engineering Building
Short Bio of the presenter:
Sergey B. Kozitskiy received his Master’s degree in Physics from Moscow institute of physics and technology, Russia, and then joint Il’ichev Pacific Oceanological Institute. In 2002, he received his Doctorate degree in Oceanography from Il’ichev Pacific Oceanological Institute, Russia. From 2012, Dr. Pavel S. Petrov is a Researcher in Il’ichev Pacific Oceanological Institute, where he served as a researcher until now.
The research focuses of Dr. Sergey B. Kozitskiy includes acoustic propagation, double diffusive convection, computational ocean acoustics, mathematical modeling of wave processes, numerical methods, asymptotic methods and so on. Dr. Sergey B. Kozitskiy has made significant contributions to the area of the underwater 3-dimensional adiabatic mode parabolic equation models, and he excels at the programing of acoustical field calculation software with C++、Fortran、JAVA、Pascal、MATLAB and so on.
Abstract of the presentation:
By the multi-scale expansions method, we derive an elastic mode parabolic equation. As a small parameter a ratio of a typical wavelength to a typical size of horizontal inhomogeneities is chosen. The shear modulus is of the order of the small parameter. The derived equation can be effectively used in seismo-acoustics propagation problems, when the influence of elastic effects is essential.
