GD
Geodynamics

Rajani Shrestha

Rajani Shrestha is a master’s student in the Department of Earth Sciences, University of Delaware. Her current research seeks to better understand mantle dynamics by measuring seismic anisotropy using frequency-dependent shear wave splitting. Her research interests include the use of geophysical and seismological tools to understand earth processes. You can reach Rajani via e-mail.

Magnets are cool, and….. so is the Earth!

Magnets are cool, and….. so is the Earth!

Magnets are cool, who does not like them? And the planet that we live in, the Earth, itself is a huge magnet. Not only does the Earth’s magnetic field protect us from harmful radiation from space, but it can also help us reveal some of the secrets of our planet. Local variations in the magnetic field can be used to probe the subsurface of the Earth from crustal to mantle depths. Although there is ...[Read More]

LLSVPs: Mysteries in the Deep Mantle

LLSVPs: Mysteries in the Deep Mantle

Did you know that there are big, blob-like anomalies in the deep mantle which are larger than a continent and rise up to hundreds of kilometers from the core-mantle boundary? Today’s post is all about those blobs and what we know and do not know about them. If you want to know more about why these blobs are so interesting to study, check out this other cool blog post by Jamie Ward. If you look at ...[Read More]

Into the anisotropic Earth

Into the anisotropic Earth

While we have sent several rovers to Mars, drilling down even just to the mantle of our own planet is a challenge that we are yet to overcome. How is it then that we know all these things about our planet’s interior? It turns out, we do not need to be inside the Earth to know what is happening there. Observations from geophysics and geochemistry can inform us about the processes and the properties ...[Read More]