2017 Team Temblor photo with NSF logo


Volkan Sevilgen, M.Sc. — cofounder and CTO
Volkan Sevilgen, CTO and cofounder, leads Temblor’s scientific programming and technology development. Volkan received an M.Sc. in Geophysical Engineering from Istanbul Technical University (ITU) in 2006 following a B.Sc. from ITU in 2003. He worked at the USGS, Menlo Park between 2006 – 2014, where he co-authored, developed and taught the Coulomb 3 earthquake stress and deformation software, and managed a four-year probabilistic seismic hazard assessment for the Balkan countries funded by USAID’s Office of Foreign Disaster Assistance. His studies on earthquake hazard and Coulomb stress interaction were published by Nature, the Proceedings of the National Academy of Sciences, and other distinguished geophysics and seismology journals. He is a member of the American Geophysical Union and the Earthquake Engineering Research Institute (EERI), Northern California Chapter. He is nominated for a Director position on the Earthquake Engineering Research Institute (EERI), Northern California Chapter Board for 2019-2020.


Ross S. Stein, Ph.D.cofounder and CEO
Ross S. Stein is Temblor CEO and cofounder, Adjunct Professor of Geophysics at Stanford University, USGS Scientist Emeritus, President of the Tectonophysics section of the American Geophysical Union, and 2017-2018 International Distinguished Lecturer of the Geological Society of America. A Fellow of the American Geophysical Union and Geological Society of America, Stein received the 2012 Gilbert F. White Natural Hazards Award from AGU, gave a 2012 TEDx talk, ‘Defeating Earthquakes,’ and received the 2000 Eugene M. Shoemaker Distinguished Achievement Award of the USGS. In 2003, the Science Citation Index reported that Stein was the second most cited author in earthquake science during the preceding decade; he was tenth most cited during 1900-2010. Stein frequently brings insights to the public media interviews, TEDx and public talks, and in IMAX and Discovery Channel films. In 2010, Stein cofounded the Global Earthquake Model (GEM Foundation), and chaired its Science Board until 2015. Stein is a member of the Resilient America Roundtable of the National Academy of Sciences, and the Natural Catastrophe Advisory Council of Zurich Insurance.

Software Developer


Serkan SevilgenSoftware Developer
Serkan leads Temblor’s API, mobile app, web app, and browser extension development, and its backend server systems. He is a programmer for high-traffic web sites, e-commerce, social media, content management systems (CMS) and analytics. He is a former entrepreneur and worked for Turkey’s largest sports team conglomerates, digital agencies, e-commerce companies. Serkan is skilled in PHP, Python, Node.js, Javascript, R, MySQL, MongoDB, Redis, Memcached, Nginx, Apache, AWS, and Heroku. He studied Chemistry at Bogazici University and received a B.S. in Design from Yildiz Technical University in Istanbul.


Ely-Portrait zoom
Geoffrey ElyComputational Seismologist
Geoff has a Ph.D. in Earth Sciences from U.C. San Diego, and has had Post-Doctoral Fellowships at USC and Argonne National Laboratory. He is a scientific software developer who has worked on earthquake rupture dynamics, wave propagation, and ground motion using numerical simulation via high-performance computing, with a keen eye for visualization. His skills include parallel-processing with message-passing and multi-threading, performance tuning in assembly language, numerical methods, signal processing, cartography and graphics programming.


Alexandra KimDeveloper & Researcher
Ali is building Temblor’s GIS mapping capabilities, conducting insurance research, and leading our website design. Ali has a B.Sc. from Brown University, where she double majored in Applied Math-Computer Science and Geochemistry. She is a National AP Scholar, and received high school department awards in Science (Chemistry) and Mathematics (Statistics). Ali is also a defender on Division I Women’s Lacrosse team at Brown, a skydiver, and rock climber.


Gabriel Lotto, MS Tsunami and Flood R&D
Gabriel received his MS in Computational and Mathematical Engineering from Stanford University 2013; his thesis was published as Lotto and Dunham (2015), “High-order finite difference modeling of tsunami generation in a compressible ocean from offshore earthquakes.” He is now a PhD candidate in Geophysics at Stanford, where his research focuses on coupled modeling of earthquakes and tsunamis. Gabriel is also cofounder of Fog City Singers, a barbershop chorus based in San Francisco, and sings in a competitive barbershop quartet.


Our Advisory Board

Dr. Richard AllenDirector, Berkeley Seismology Lab
Dr. Richard Allen

Chair of the Department of Earth & Planetary Science at U.C. Berkeley, and Director of the Berkeley Seismology Lab
Jeff EllisDirector of Codes and Compliance at Simpson Strong-Tie
Jeff Ellis

Director of Codes and Compliance at Simpson Strong-Tie
Dr. Lucy JonesFounder of the Dr. Lucy Jones Center for Science and Society
Dr. Lucy Jones

Dr. Lucy Jones Center for Science and Society, and Research Associate at the Seismological Laboratory of Caltech


Pascal KarsentiDirector, Research & Technology at Nephila Advisors
Pascal Karsenti

Director, Research & Technology at Nephila Advisors
Dr. Nicholas PinterDirector of the UC Davis Center for Watershed Sciences
Dr. Nicholas Pinter

Shlemon Chair in Applied Geosciences, and Associate Director of the Center for Watershed Sciences, University of California Davis
Barney SchaubleManaging Partner at Nephila Advisors
Barney Schauble

Managing Partner at Nephila Advisors