Diego Melgar

Ann & Lew Williams Chair of Earth Sciences
Assistant Professor

B.E. Geophysics, Universidad Nacional Autónoma de México
M.S. Geophysics, Scripps Institution of Oceanography
Ph.D. Geophysics, Scripps Institution of Oceanography

Jiun-ting "Tim" Lin

Ph.D. Student (Co-advised with Amanda Thomas)

B.S Earth Sciences, National Central University, Taiwan
M.Sc. Geophysics, National Central University, Taiwan
Tim is working on machine learning and high-rate GNSS displacement data. He is building an algorithm that uses complex crustal deformation patterns to rapidly characterize earthquakes and their hazards. He has also worked on source models of large earthquakes from joint inversion of many geophysical data. 

Sydney Dybing

Ph.D. Student

B.S Geophysics, Washington University in Saint Louis
Sydney is working on using borehole strainmeters to observe the nascent stages of earthquake rupture. Ultimately the goal is to evaluate whether there is any determinism to rupture and develop methods of speeding up earthquake early warning system

Sean Santellanes

Ph.D. Student

B.S Geophysics, University of Texas at Austin
​M.S Meteorology, Pennsylvania State University
Sean is currently researching the how recordings of tsunami noise int he open ocean can be used to estimate hotspots of coastal tsunami amplification

 David Small

Ph.D. Student (co-advised with Doug Toomey)

B.S Geophysics, University of California Santa Cruz
David is researching how geodetic coupling models can inform forecasts of large earthquake ruptures. His research focuses on how different models of locking at the Cascadia subduction zone inform what the next big earthquake (and its hazards) will look like

Yu-Sheng Sun

Ph.D. Student (co-advised with Amanda Thomas)

B.S Geophysics, National Central University, Taiwan
M.S.Geophysics, National Central University, Taiwan
Yu-Sheng is working on earthquake source processes with a special emphasis on kinematic slip ivnersion techniques

Margarita Solares

Ph.D. Student 

B.S Geography, Universidad de Puerto Rico Mayaguez
M.S.Geology, Universidad de Puerto Rico Mayaguez
Margarita will be joining the group in the fall of 2021!

Alumni

Khurram Asslam

Postdoctoral Scholar  (2019-2021, co-advised with Amanda Thomas) 
​Now at AIR Worldwide

At the UO Khurram worked on dynamic rupture models for large earthquakes. With Ph.D. student Jiun-Ting Lin he led a study of the 2018 Hawaii earthquake to show that there is significant overlap between regions of co-seismic slip and regions that have slow slip. He also led a paper that studied the connection between megathrust slip and activation of splay faults in the Cascadia subduction zone with an emphasis on tsunami hazards.

Dara Goldberg

Postdoctoral Scholar  (2019-2020) 
​Now at the USGS National Earthquake Information Center

During her time at UO Dara worked on a combination of earthquake source observations and rupture modeling. She s researched the source process of the 2019 Ridgecrest, California sequence by combining seismic and space geodetic methods. She  also worked developing a modeling code for realistic broadband P-waves and strong ground motion which could be used for testing earthquake early warning systems
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Amy L. Williamson

Postdoctoral Scholar  (2018-2020) 
​Now at the NOAA National Tsunami Warning Center

While at UO Amy worked on tsunami propagation problems trying to understand the relationship between the kinematics of rupture and its effects on inundation at the local coastlines. She also worked on a joint NASA/NOAA tsunami early warning project to bring local warning to the Cascadia Subduction Zone. An important question she tackled was quantifying how good a tsunami forecast can be in the first 1-2 minutes following an earthquake

Christine Ruhl

Postdoctoral Scholar  (2016-2018 co-advised with Richard Allen @ UC Berkeley)
​Now Asst. Professor at Univ. of Tulsa

Christine researched the performance of GNSS based earthquake early warning algorithms. Specifically she worked on the timeliness of ground motion predictions by studying a global database of large earthquakes recorded by near-field seismic and geodetic data.

Fernando Salazar Monroy

Visiting Ph.D. Student  (2018)

Fernando visited UO for 6 months from the Universidad Nacional Autónoma de México. He worked on probabilistic tsunami hazard analysis for the Mexican subduction zone where earthquakes as large as M8.6 have been identified in the past.

Miriam Lizzeth Vazquez

Undergraduate IRIS intern  (2019)

Lizzeth was an undergraduate intern who visited for 10 weeks from the Universidad del Mar in Oaxaca Mexico to do research as part of the IRIS internship program. Lizzeth studied the great 1787 M8.6 San Sixto earthquake in south central Mexico. This is the largest known earthquake on the Mexican subduction zone. Lizzeth generated over 500 hypothetical kinematic rupture models and modeled the ensuing tsunamis to understand the potential impacts of such a large event