Principal InvestigatorD2ea012d E4a7 43a3 9766 5d6226bf0e51 1 105 C 840x600 Acf Cropped

Daniel Trugman is an Assistant Professor in the Department of Geological Sciences with a joint affiliation at the University of Texas Institute for Geophysics. Daniel completed his Bachelor’s degree in Geophysics at Stanford University in 2013, where he did honors research with Eric Dunham studying the effects of fault roughness on earthquake rupture processes. He received his Ph.D. from Scripps Institution of Oceanography in 2017, where he worked with Peter Shearer to study space-time variations in earthquake source processes and their implications for hazard. Daniel worked for two years as a Richard P. Feynman Distinguished Postdoctoral Fellow at Los Alamos National Laboratory in his hometown of Los Alamos, New Mexico. Daniel started as an Assistant Professor at UT Austin in August of 2020. His research centers on developing and applying new techniques to analyze large seismic datasets in order to better understand earthquake rupture processes and their links to earthquake hazards.

Postdoctoral Researchers

Img 8672Nadine Igonin is a Postdoctoral Fellow in the Department of Geological Sciences at the University of Texas in Austin. She received her B.Sc. and Ph.D. at the University of Calgary in Calgary, Alberta, Canada. Her Ph.D. focused on induced seismicity due to hydraulic fracturing in the Fox Creek, Alberta area. During her Ph.D., she also spent a research abroad term at the University of Bristol in England, where she studied shear-wave splitting observed on microseismic events. She also completed an internship at ExxonMobil in Houston that centered around integrated analysis of microseismic data with strain data, pressure data, pumping data and core data. After completing her degree, she did a 3-month postdoc at the University of Calgary where she worked on detailed comparisons of microseismic events detected on geophone arrays versus events detected on fiber data. Her current research is about injection induced seismicity in Texas and source spectral analysis.


Chas Bolton is a NSF Postdoctoral Fellow at the University of Texas Institute for Geophysics working with Prof. Daniel Trugman and Demian Saffer. He received his B.S. in Geology at the University of Texas in Arlington and his Ph.D. at The Pennsylvania State University. His Ph.D. research involved characterizing acoustic emission signals during laboratory friction experiments, with a particular emphasis on identifying precursory signals and coupling these signatures to the physics of fault zone deformation. He spent two summers working at Los Alamos National Lab as a research assistant where he applied machine learning techniques to study laboratory seismicity. He also worked as an intern at Diamondback Energy where he studied induced seismicity in the Midland Basin. As NSF Postdoctoral Fellow, he will integrate laboratory experiments with seismic data from the Apennine fault system in Italy in an effort to quantify spatiotemporal properties of foreshock sequences. Outside of work he enjoys going to the gym and spending time with his family.

Graduate Student Researchers

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Avigyan Chatterjee is a Ph.D. student in the Department of Geological Sciences at the University of Texas at Austin. Avigyan grew up in the small town of Asansol in the historically famous province of Bengal in India. He received a B.S. and M.S. in Earth Sciences from one of India’s premier science research institutes, the Indian Institute of Science Education and Research Kolkata. His M.S. work at IIS revolved around exploring the mechanics behind the frequently occurring small earthquakes in the seismically complex region of Northeastern India. Avigyan received a second M.S. from University of Oregon, where his thesis focused on understanding the ground motions of tsunamigenic earthquakes. Outside his research work, he likes to play his acoustic guitar, read historical novels, and watch football.


Vivian Rosas is a Ph.D. student in the Department of Geological Sciences at the University of Texas atImg 4213 Austin. Vivian was born and raised in the border town of El Paso, Texas, where she also received her B.S. in geology at the University of Texas at El Paso (UTEP). In her time at UTEP, she completed an internship with the Southern California Earthquake Center (SCEC) where she analyzed how stress drop scales with different earthquake parameters. She aspires to continue researching seismological problems as well as looking into planetary science in the near future. Other than being a student, Vivian enjoys exploring the city, hiking, and swimming sports.