Waveform Browser

Browse earthquake records simply by clicking on each station. Download matlab .m and .fig files below, as well as sample earthquake data (.mat file).

To run, load the .mat file and call the wfBrowser function as follows:


Note: Mapping Toolbox required

Sound-based demos

With this series of demos you can explore concepts in digital signal processing such as amplitude, frequency and phase, Fourier series/transform, amplitude spectra and convolution. Demos run in matlab, no toolboxes required. Once you run the .m file for each, the GUIs are pretty self-explanatory. Run only one at a time or you might get errors.

Educational gravity modeling

This little tool illustrates forward modeling of gravity anomalies using a sphere. Move the sphere, change it's radius and density to match the "observed" data. Arrow keys move the center of the sphere, shift+left(right) increase(decrease) density, shift+up(down) increase(decrease) radius. Drop-down menu gives the option to show the "half-wdith" of the anomaly and the current sphere parameters.

Ground Motion Visualizations

Here you will find animations of ground motion from earthquakes recorded by the EarthScope Transportable array. The colors are made by translating the displacement on the Z/R/T components into RGB space. Each phase has it's own distinct look: P is light blue, S is magenta, Love waves are greenish-yellow and Rayleigh waves are typically dark blue.