Juliane Dannberg, Professor at GEOMAR Helmholtz Center for Ocean Research and Kiel University, will present her research in a lecture entitled "Heterogeneity of the Lowermost Mantle: Insights from Connecting Geodynamic Models to Seismic Observations". The lecture will be held in English.
ECS co-host this time is (tba).
The DeepDyn seminar takes place online as a zoom-meeting. DeepDyn members will automatically receive the access link before the seminar. We ask external seminar guests to register for the seminar in order to receive the access link.
Heterogeneity of the Lowermost Mantle: Insights from Connecting Geodynamic Models to Seismic Observations
Abstract
The core-mantle boundary is the strongest discontinuity in the Earth’s interior. Seismological observations show this region to be heterogeneous on different length scales, from continent-sized Large Low Shear Velocity Provinces (LLSVPs) to Ultra Low Velocity Zones (ULVZs) that are only 10s of kilometers thick. Understanding the nature of these heterogeneities provides insights into Earth’s evolution, material recycling, and the preservation of primordial reservoirs. Beyond that, the physical and chemical properties of these heterogeneities also control the interaction between the mantle and the core, impacting the generation of Earth’s magnetic field. Here, I will explore different scenarios for the origin of this observed heterogeneity using geodynamic models. Furthermore, I will show how integrating these simulations with thermodynamic models and seismological observations allows us to constrain the composition of the lowermost mantle, one of the least well-understood regions of the Earth.
more information about Juliane Dannberg
Link to the next seminar
with Karen Appel (European XFEL)