Louis Moresi bio photo

Louis Moresi

Professor of Geophysics University of Melbourne Victoria 3010 Australia +61 4 0333 1413

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All Posts (by date)

Year

2017


Shear Bands with Dilatancy modelled with Underworld

In honour of Hans Mühlhaus’ 70th birthday this month, here are some shear band simulations made with Underworld. We are investigating the role of dilatancy in the geometry of the shear bands for a box of material when a small trapdoor is opened.

2016


Publishing Computational Science with Containers

Results in computational science ought to be free of the observational uncertainties that make reproducibility so tricky in the experimental sciences. However, even when codes are completely open source, there is not a strong culture of distributing the source code and data files for individual results and this is e...

Reproducible, Reviewable Scientific Code with Docker

The Underworld team recently decided to focus on distributing Docker images with Underworld2 pre-installed. This was primarily to make our lives easier in deploying our software on multiple platforms. Docker does this by bundling all dependencies from the operating system upwards and any necessary data into a single...

2015


Cartopy

The cartopy tutorial materials from the python VIEPS course from 2015 are now available on my github teaching page under Mapping. I like the simplicity of this package and I used it to help the class learn how to code in notebooks. Updated since then for the new notebook systems, cartopy 0.13 and with tools to downl...

Gitbucket v. Bithub v. roll-your-own

The days of running a webserver quietly on some machine in the corner are long gone but what happens when you need services like repositories for code management, a user forum and other shared space for a distributed team project ? Increasingly people turn to online development sites such as Github or Bitbucket. We ...

Underworld 2

Underworld is our parallel, particle-in-cell, finite element geodynamics code [1]. For the past year or so, the Underworld team has been working on a refurbished user interface. We’ve known for a long time that it needed to be done but we finally bit the bullet. We settled on turning underworld into a python cod...

Viscoelasticity in Underworld

Viscoelasticity has been a hidden feature of Underworld for some time now, initially in the experimental branch (alpha testing) and more recently, in the mainstream version. We did not officially release or document this implementation because it had not gone through peer review. Now, however, with Rebecca Farringto...

Visiting Timor

I was fortunate to have the opportunity to tag along to visit the island of Timor (both West and East) to observe the seismic deployment led by the University of Southern California to study “Transitions in the Banda Arc-Australia continental collision as a bridge to understanding mantle and lithospheric controls o...

Cogent Geoscience

For the past six months or so, I have been working on the launch of a new Open Access journal Cogent Geoscience. My first thought when I was asked if I would be interested in leading this project was “another journal … really ?” but I did spend some time to discuss the whole idea with the staff at Taylor & Franc...

2014


Deep Carbon Modeling

Overview of global modeling of plate behaviour & the eating habits of subduction zones The Deep Carbon Observatory hosted a workshop at the Carnegie Institute in Washington DC to learn about the state of the art in modeling of the deep, long-term, global carbon cycle. There is a lot of information coming from...

CIG talks 2013 / 2014

Summary of lessons learned in developing Underworld and building an Underworld community I gave a presentations at the Fall AGU meeting to the computational geodynamics community and to the GeoPrisms meeting to provide a summary of lessons learned in building Underworld, supporting the user community, and our pla...

EGU / CGU 2014

EGU Meeting,Vienna, Austria, April 2014 & CGU Meeting, Banff, Canada, May 2014 Our talk on congested subduction zones for the EGU session on subduction. The slides are available as a pdf file here: Talks/EGU-2014/ConjestedSubduction-MoresiEtAl.pdf (movies - browse this site for links / examples). This talk co...

LAB workshop - slides

LABPAX workshop, Hainberg, Austria, April 2014 At the ILP Task Force LABPAX workshop in Austria, 2014, I gave an overview of thermal boundary layers and scaling for the sub-continental lithosphere. The talk slides in pdf format are at the following link: Talks/LABPAX-2014/TBLs.pdf. Chiefly, this presentation is a...

Mathematics and Code

This post was originally written for the “logdown” platform but I recently ported the whole lot across to github and their jekyll-based environment. I have therefore generalised my comments and I am showing only what works on github too. [ Sept 4, 2015 ]

The Dynamics of Continental Accretion

In a recent paper [1], we used Underworld models to examine subduction congestion associated with the ingestion of a continental ribbon. The SE Australian geological record turned out to be a wonderful place to study this process. Here is a short summary of the work for a relatively non-technical audiencethat we p...


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