Atmospheric loss in giant impacts: The effect of pre-impact surface conditions; Research seminar with Dr Simon Lock
Earth likely acquired a significant fraction of its volatile elements during the main stages of accretion. The atmospheres of the planetary embryos that accreted to form Earth must therefore have survived the giant impacts (collisions between planet-sized bodies) that dominate the end of accretion. Using numerical simulations of giant impacts, I will show that the efficiency of atmospheric loss depends strongly on the surface conditions on the colliding bodies (e.g., atmospheric pressure, presence/absence of an ocean). Understanding the complex feedbacks between the evolution and survival of planetary atmospheres provides new insights into the origin of our atmosphere and ocean.
Date: 27 October 2023, 12:00 (Friday, 3rd week, Michaelmas 2023)
Venue: Department of Earth Sciences, South Parks Road OX1 3AN
Venue Details: Lecture Theatre
Speaker: Dr Simon Lock (University of Bristol)
Organising department: Department of Earth Sciences
Part of: Earth Sciences departmental seminars
Booking required?: Not required
Booking url: https://www.earth.ox.ac.uk/events/week-3-research-seminar-with-dr-simon-lock/
Audience: Members of the University only
Editor: Maria Petrunova