Normal modes and resonance in Ontario Lacus

a hydrocarbon lake of Titan

Journal article (2019)

Authors

David Vincent Université Catholique de Louvain

Jonathan Lambrechts Université Catholique de Louvain

Özgur Karatekin Royal Observatory of Belgium

Tim Van Hoolst Royal Observatory of Belgium

Robert H. Tyler University of Maryland

Véronique Dehant Université Catholique de Louvain, Royal Observatory of Belgium

E.L.C. Deleersnijder Mathematical Physics - , Université Catholique de Louvain

Research Group

Mathematical Physics () (TU Delft)

DOI: https://doi.org/10.1007/s10236-019-01290-2

Titan Ontario Lacus Extraterrestrial oceanography Natural modes

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Published Date

2019

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Delft Institute of Applied Mathematics

Research Group

Mathematical Physics

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.

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