Skip to main content

Skip to navigation

Departments & Programs


Post Doctoral Scholars

Tobias Keller , Post Doctoral Scholar


Tobias Keller research aims at furthering the understanding of the physics of magmatic and volcanic systems. He pursues that goal by expanding available models for multi-component multi-phase flow in geodynamics, and by developing the next generation of magma dynamics simulation software. His current research is focused on understanding how the three-phase interaction between crystals, melt and vapor in subvolcanic magma bodies controls volcanic activity as observed on the surface.
His personal research website:


Sergio Maldonado

Sergio joined the group in January 2016 after completing his PhD in Environmental Fluid Mechanics at the University of Edinburgh (UK). His doctoral thesis explored the development of mathematical models to study sediment transport and bed morphological evolution in open channels. Sergio also holds a M.S. in Coastal Engineering from Universidad Nacional Autónoma de México (UNAM) and a B.Eng in Mechanical Engineering from Tecnológico de Monterrey (ITESM, Mexico). At Stanford, he works with The Natural Capital Project on the development and enhancement of numerical models aimed at quantifying the protective service provided by coastal ecosystems. His main goal is to investigate, through numerical and analytical means, the interaction between hydrodynamics, vegetation and sediment transport in the near-shore area.


Zhipeng Qin

Zhipeng Qin , Post Doc Scholar

Before joining Stanford in June 2015, Zhipeng Qin held a
position as research assistant in Prof. Amir Riaz's CFD group at University of
Maryland, and received his doctoral degree in the department of Mechanical
Engineering. His doctoral dissertation investigated numerical simulation for
multiphase flow, and was mainly focused on the development of interface
advection schemes and jump condition capturing methods.


At SIGMA, the goal of Zhipeng's research is to advance
the basic understanding and predictive capabilities of complex multi-phase
flows in geyser and lava lake. He is pursuing this goal by applying
computational methods for the solver of Navier-Stokes equation with high
viscous difference.


Katy Serafin , Post Doc Scholar

Katy Serafin is a post-doctoral research scholar in the Department of Geophysics. She received a M.S. and Ph.D. in Ocean, Earth, and Atmospheric Sciences from Oregon State University and a B.A. in Environmental Studies from Connecticut College. Prior to graduate school, she worked at the U.S. Geological Survey’s St. Petersburg Coastal and Marine Science Center to evaluate storm-induced coastal change hazards. Her research focuses on understanding the frequency, drivers, and impacts of flooding events in the San Francisco Bay in order to assess the risk and resilience of coastal communities to present day and future hazards. Her research interests include compounding flood hazards, flood protection strategies in a changing climate, the impact of nuisance flooding events, and quantification of the indirect consequences of flooding, such as traffic disruption.