Daniel Trugman

Graduate Student Researcher
Scripps Institution of Oceanography

About Me


I'm a graduate student working at Scripps Institution of Oceanography's Institute of Geophysics and Planetary Physics in La Jolla, CA.

My advisor is Peter Shearer. He's the man. Trust me.

Here at Scripps, I study earthquakes: characterizing how their source properties and occurrence patterns vary in space and evolve in time. In doing so, I aim to provide quantitative constraints on the true natural variability in earthquake occurrence that can be used to improve the next generation of seismic hazard assessments. A better understanding of this variability, including the deviant, outlier earthquakes with unusual source properties, will also help us learn more about the physics underlying earthquake nucleation, stress-driven triggering, and earthquake-earthquake interaction.


I'm currently working on a few interrelated projects with the following general themes:

  • Using machine learning algorithms to quantify and understand the relationship between dynamic earthquake source properties and ground motion amplitudes for earthquakes in the San Francisco Bay Area (work in progress)
  • Improving methodology for making reliable source spectral estimates for large data sets, and applying these methods to study source properties of natural, triggered, and induced earthquakes (link)
  • Quantifying scaling relationships for the dynamic properties of the earthquake source, and understanding the implications of non-self-similar scaling for rupture processes and seismic hazard (link)
  • Improving numerical algorithms for large-scale earthquake relocations based on waveform cross-correlation of similar event clusters (link)

Research projects I've worked on previously include:

  • Studying long-term changes in the patterns of seismicity in California's geothermal fields (link)
  • Satellite geodetic measurements of subsidence at the Cerro Prieto Geothermal Field (Mexico), and its potential influence on seismic hazard (link)
  • Statistical tests to detect and measure clustering in earthquake catalogs (link)
  • Low Frequency Earthquake clustering and interaction at Parkfield, CA (link)
  • Numerical modeling of dynamically triggered tremor (link)
  • Statistics-driven source modeling of fully dynamic earthquake rupture simulations on fractally rough faults (link)


Geophysics Ph.D. Candidate, University of California - San Diego
2015: M.S. Geophysics, University of California - San Diego
2013: B.S. Geophysics, Stanford University


dtrugman .at. ucsd .dot. edu
Office: Munk 202
Scripps Institution of Oceanography
9500 Gilman Drive MC 0225
La Jolla, CA, 92093-0225