Normal modes and resonance in Ontario Lacus: a hydrocarbon lake of Titan

Author/Creator ORCID

Date

2019-08-31

Department

Program

Citation of Original Publication

Vincent, D., Lambrechts, J., Karatekin, Ö. et al. Normal modes and resonance in Ontario Lacus: a hydrocarbon lake of Titan. Ocean Dynamics 69, 1121–1132 (2019). https://doi.org/10.1007/s10236-019-01290-2

Rights

This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1007/s10236-019-01290-2

Subjects

Abstract

The natural modes of Ontario Lacus surface oscillations, the largest lake in Titan’s southern hemisphere, are simulated and analyzed as they are potentially of broad interest in a variety of dynamical researches. We found that tidal forces are too low in frequency to excite the (barotropic) normal modes. Broadband wind forcing likely spans the resonant frequencies. High wind speed, which could be encountered under episodic phenomena such as storms, would be required to significantly excite the normal modes. While the slower baroclinic normal modes could more easily be resonantly forced by the low-frequency tidal forces, addressing this issue demands unavailable information about the lake stratification.