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dScience Lunch Seminar: How Rock Textures Shape Earth’s Mechanical Behaviour

Join us in the dScience Lounge for a talk by ?gnes Király on the anisotropic mechanical behavior of rocks—how their textures influence deformation from the Earth’s crust to its core.

Seismic anisotropy is often discussed, but what about viscous anisotropy? ?gnes will explain how rock textures shape both elastic and viscous behaviour and discuss modeling techniques.

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Presentation

Many of Earth’s layers – from the crust to the inner core – are mechanically anisotropic. Anisotropic (i.e. direction-dependent) behavior of rocks can derive from intrinsic properties of rock forming minerals or from microscopic or macroscopic layering of rocks and/or melts with different composition (extrinsic anisotropy). The anisotropic behavior can translate from the micro to the macro scale if the crystals, or inhomogeneities are organized in a non-random distribution, which we call lattice preferred orientation for crystals, and shape preferred orientation for layered materials.

The Earth Science community often discusses the phenomena of seismic anisotropy, which results from the direction dependent propagation of seismic waves. However, materials that are characterized by elastic (seismic) anisotropy often exhibit viscous anisotropy as well, which is less explored. In this talk, ?gnes will discuss how texture and viscous anisotropy evolve together, and the different strategies and recent advancements to model them. 

Speaker

?gnes Király is a Researcher in Geodynamics. She completed her PhD at the University of Roma Tre, and after started a Postdoc at the University of Oslo in the Center for Earth Evolution and Dynamics. In 2020, she was granted funding for a Young Research Talent Project (ANIMA) from the Norwegian Research Council. In ANIMA, she has been exploring the role of anisotropic viscosity on mantle dynamics. In 2024, she successfully applied for an ERC Starting Grant that she will start in May, 2025. In her new project, DYNAMICE, she will couple solid earth dynamics with ice sheet dynamics, and further explore the role of anisotropic viscosity in ice sheet dynamics and corresponding mantle processes.

Program

11:30 – Doors open and lunch is served

12:00 – "Relationship between rock textures and anisotropic mechanical behavior" by ?gnes Király (Researcher, Department of Geosciences)

This event is open for all students, PhD candidates, postdocs, and everyone else who is interested in the topic. No registration needed.

About the seminar series

Once a month, dScience will invite you to join us for lunch and professional talks at the Science Library. In addition to these, we will serve lunch in our lounge in Kristine Bonnevies house every Thursday. Due to limited space (40 people), this will be first come, first served. See how to find us here.

Our lounge can also be booked by PhDs and Postdocs on a regular basis, whether it is for a meeting or just to hang out – we have fresh coffee all day long!

Lounge Calendar

Tags: dscience, postdoc, phd, lunch seminar
Published Feb. 6, 2025 8:40 AM - Last modified Mar. 3, 2025 2:14 PM