Yesterday (14 November 2019), I gave a webinar for the Computational Infrastructure for Geodynamics (CIG) group, based out of UC Davis. The webinar went well for most of the time, until my internet went out when I had a few slides left. Oh well...
At some point in the future …
This is the presentation I gave at the Seismological Society of America meeting in Seattle this spring.
The Global Earthquake Model (GEM) Foundation has the mission to promote earthquake resilience worldwide by creating and maintaining earthquake hazard and risk models, and associated datasets and software for probabilistic seismic hazard …
In May of this year, I was invited to give a keynote address to the TopoEurope conference, which focused this year on subduction zones and topography.
The conference was excellent, and it was a good opportunity to revisit the topic of topographic and tectonic interplay, which I have not given …
Over the past two years, I have been working for the Global Earthquake Model Foundation (GEM). My main task has been building the Global Active Faults Database (GEM GAF-DB), which is just what it sounds like—a database that contains all of the world's active faults. This work is nearing …
This post covers an algorithm to make polygons from connected lines, in the context of making geologic rock unit polygons from contacts mapped in a GIS program.
cross-posted from the GEM Hazard Blog
I've had several conversations with geologists recently who are considering creating new active fault databases (or datasets). These geologists are all government scientists who are interested in both tectonics research and seismic hazard, and would like to make maintainable databases that suit both purposes …
Strain partitioning has interested me since I first heard about it. The basic idea is that in some regions, the strain field is not aligned exactly with the dominant fault system, so that fault system can't act as a 'pure' strike-slip or dip-slip fault system and relieve all of the …
One of the major challenges of geology is the increasing sparsity of information about increasingly older times in Earth's history. This presents difficulties both when one is investigating a particular era, and when one is interested in looking at the frequency of events through time, or the frequency of rare …
Around the new year, I wrote a quick blog post to answer for myself a question about how the natural variability in earthquake timing can effect slip rate measurements over different timescales. The results from the blog post demonstrated that there is a lot of slip rate variability over timescales …