Acoustic-gravity waves (AGWs), which encompass gravity waves and infrasound, couple wave processes in the ocean and solid Earth with those in the middle and upper atmosphere, play an important role in the momentum transfer in the atmosphere, and provide a key to understanding ionospheric manifestations of tsunamis, earthquakes, and other natural and anthropogenic phenomena occurring near the ground level. Theory and mathematical modeling of AGW generation, propagation, dissipation, and coupling in inhomogeneous and non-stationary atmosphere are areas of active research. Current research interests include understanding the ambient wave field in the atmosphere; attribution of the observed AGW signals to near-ground sources; modeling of generation of AGWs and their propagation in the ocean and atmosphere; modeling of low-frequency ambient underwater sound; and acoustic noise interferometry for passive remote sensing of the environment.

References

Godin O. A., Zabotin N. A., and Zabotina L. Earth, Planets and Space, 72, Art. 125 (2020). 

Tan T. W. and Godin O. A. Journal of the Acoustical Society of America, 150, Art. 2717-2737 (2021).

Godin O. A. Journal of the Acoustical Society of America, 150, 3999–4017 (2021). 

key words

Infrasound; acoustic-gravity waves; ionosphere; wave propagation; noise interferometry; microbaroms; ambient sound; infragravity waves; nonlinear wave interactions

Citizenship:  Open to U.S. citizens, permanent residents and non-U.S. citizens

Level:  Open to Postdoctoral and Senior applicants