Enhanced mechanical core-mantle coupling induced by a stably stratified layer at the top of the core.

Jeremy Rekier1, Bruce A Buffett2, Santiago Andres Triana1 and Veronique M A Dehant3, (1)Royal Observatory of Belgium, Brussels, Belgium, (2)University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, (3)Royal Observatory Belgium, Brussels, Belgium