Presentation title: “Mode Gaussian beam tracing, and the modeling of pulse propagation using mode parabolic equations”
(The 3rd 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: 15:00-16:30, July 4, 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:
A mode parabolic equation in the ray centered coordinates for 3D underwater sound propagation is developed. The Gaussian beam tracing in this case is constructed. The test calculations are carried out for the ASA wedge benchmark and proved an excellent agreement with the source images method in the case of cross-slope propagation. But in the cases of wave propagation at some angles to the cross-slope direction, an account of mode interaction becomes necessary.
