School of Earth and Environment

Samuel Greenwood Samuel Greenwood

Postgraduate Researcher

Email address:
Room: 8.152

Affiliation: Institute of Geophysics and Tectonics


2016, MGeophys Geophysical Sciences, University of Leeds

Dissertation: "Testing the speed of the last geomagnetic reversal from a core dynamics perspective"

Research Interests

My interests lie in global geophysics, in particular: geomagnetism, core dynamics and the Earth's thermal history. The generation mechanism for the Earth's magnetic field, the geodynamo, is driven by convective motion in the electrically conducting liquid outer core. I work with reconcilling thermal history and geodynamo models with observations of the magnetic field. I am also interested in data visualisation and making scientific code as accessible and easy to use as possible.

Support duties

I enjoy occasionally demonstrating for different undergraduate geophysics modules.

Project details

Project title

Modelling a stable layer in the Earths outer core and the implications for the geomagnetic field.


Dr Jonathan Mound and Dr Chris Davies


This project is funded by the NERC DTP

Start date

1 October 2016

Project outline

The possiblity of stable stratification in the outer core has been suggested based upon seismic studies and geomagnetic arguments with a range of formation mechanims proposed. The first stage of my PhD is to model the core's history since formation of the Earth taking into account these various effects.


Chourasia, A., Avery, M., Willis, A., Greenwood, S., Davies, C., Constable, C. and Gubbins, D. 2016. Visualization of Geodynamo Simulations. Proceedings of the XSEDE16 Conference on Diversity, Big Data, and Science at Scale. Article 58. DOI: