Constantinos Charalambous¹, Alexander Stott², William T Pike¹, John McClean², Tristram Warren³, Raphael F. Garcia⁴, Philippe Henri Lognonné⁵, Nicholas A Teanby⁶, Naomi Murdoch⁷, Donald J Banfield⁸, Aymeric Spiga⁹, Domenico Giardini¹⁰, John F Clinton¹⁰, Simon C Staehler¹¹, Savas Ceylan¹⁰, Anna C Horleston⁶, Martin van Driel¹², Amir Khan¹⁰, Taichi Kawamura¹³, John-Robert Scholz¹⁴, Maren Boese¹⁵, Guenole Mainsant¹⁶, Ian M Standley¹⁷, Simon B Calcutt¹⁸, William Bruce Banerdt¹⁹ and The TWINS Team, (1)Imperial College London, London, SW7, United Kingdom, (2)Imperial College London, London, United Kingdom, (3)Oxford University, Physics, Oxford, United Kingdom, (4)Institut Supérieur de l'Aéronautique et de l'Espace, DEOS/SSPA, Toulouse Cedex 04, France, (5)Université de Paris, Institut de physique du globe de Paris, CNRS, Paris, France, (6)University of Bristol, Bristol, United Kingdom, (7)Institut Superieur de l’Aeronautique et de l’Espace, Toulouse, France, (8)Cornell University, Center for Radiophysics and Space Research, Ithaca, NY, United States, (9)Laboratoire de Météorologie Dynamique UPMC, Paris, France, (10)ETH Zurich, Zurich, Switzerland, (11)ETH Zurich, Institute of Geophysics, Zurich, Switzerland, (12)ETH Zurich, Department of Earth Sciences, Institute of Geophysics, Zurich, Switzerland, (13)Université de Paris, Institut de physique du globe de Paris, Paris, France, (14)Max Planck Institute for Solar System Research, Goettingen, Germany, (15)CA Inst of Tech-Seismologi Lab, Pasadena, CA, United States, (16)Géosciences Montpellier, Montpellier Cedex 05, France, (17)Kinemetrics Inc, Pasadena, CA, United States, (18)University of Oxford, Oxford, United Kingdom, (19)Jet Propulsion Laboratory, Pasadena, CA, United States