A finite difference time domain model for the Titan ionosphere Schumann resonances
Article first published online: 7 FEB 2007
Copyright 2007 by the American Geophysical Union.
Volume 42, Issue 2, April 2007
How to Cite
2007), A finite difference time domain model for the Titan ionosphere Schumann resonances, Radio Sci., 42, RS2S04, doi:10.1029/2006RS003490., , , and (
- Issue published online: 7 FEB 2007
- Article first published online: 7 FEB 2007
- Manuscript Accepted: 26 SEP 2006
- Manuscript Revised: 18 AUG 2006
- Manuscript Received: 28 FEB 2006
- Schumann resonances;
 This paper presents a numerical approach to model the electrical properties of Titan's atmosphere. The finite difference time domain technique is applied to model the atmosphere of Saturn's satellite in order to determine Schumann resonant frequencies and electromagnetic field distributions at the extremely low frequency range. Spherical coordinates are employed, and periodic boundary conditions are implemented in order to exploit the symmetry in rotation of the celestial body. Results are compared with a previous model using the transmission line matrix method up to 180 km altitude. For the first time a numerical FDTD model up to 800 km altitude is carried out, and we report lower frequencies than other previous models. The Schumann resonances of Titan were measured by the NASA–European Space Agency Cassini-Huygens mission in January 2005. Our mathematical model can be modified to change the conductivity profiles to explain the observed experimental data.