Global Block Model (Work In Progress)

I am slowly putting together a high-resolution joint geodetic-geologic block model as a way of estimating fault slip rates for all faults in a revamped GEM Global Active Fault Database. As of this writing, I have much of North America and the Tethyan belt of Asia drafted, and showing various …

SSA 2021: Estimating fault slip rates in the Cascadia region of North America using joint geologic-geodetic block modeling

This is the presentation I gave at the Seismological Society of America meeting this spring. It highlights ongoing work on incorporating block modeling into seismic hazard analysis.

Authors: Richard Styron, Tiegan Hobbs, Nick Harrichhausen, Murray Journeay

Abstract

The western margin of North America in the Cascadia region is known to …

Diffuse block boundaries and off-fault seismicity

I've spent quite a bit of time over the last year drawing blocks (microplates) that are partially bounded by faults, to make block models that I can use to invert geodetic velocities and geologic slip rate data to get internally-consistent slip rates for all faults in a deforming region.

One …

Block model of greater Tibetan deformation in Javascript

In a previous post, I showed a movie of Tibetan blocks motions from an inversion of geodetic and geologic data. The movie is informative, but as I have developed the inversion, I have relied on GPlates to be able to view the motions interactively, i.e. by panning and zooming …

Block model of greater Tibetan deformation

I've spent quite a bit of time this year working on characterizing the fault network for China and the vicinity (Himalaya, Tien Shan and the northwestern Pamir). This has involved remapping HimaTibetMap and writing a new block modeling program to solve for internally-consistent slip rates on all the faults in …

How to make high-resolution maps while reducing file size in ArcGIS and Adobe

A guest post by the Figure Master Lydia Staisch

Here is a map! It's LiDAR and scaled to a poster size of 45"x30" -- it has the potential to be an absolutely monstrous file size when exported.

CIG Webinar: The Release of the GEM Global Active Faults Database and Global Seismic Hazard Map

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 …

SSA 2019: Presenting the 2018 GEM Global Seismic Hazard Map and Global Active Faults Database

This is the presentation I gave at the Seismological Society of America meeting in Seattle this spring.

Abstract

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 …

TopoEurope 2019: Plate convergence, topography and faulting in the Himalaya and Tibet

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 …