Research Interests

Processes that deform the solid earth including those associated with the seismic cycle, migration of magma and water in the subsurface, tides, and glacial rebound; Tectonics and the relationship between short and long time scale processes; Glaciology, particularly basal mechanics and ice rheology; Tools and applications using space geodesy, particularly GNSS, Interferometric SAR and gravity measurements.

I currently divide my time between Caltech and JPL where I serve as Chief Scientist. For more information, please see JPL's Office of the Chief Scientist.

Congratulations!

Congratulations to Ollie Stephenson for defending his thesis August 2022
Congratulations to Alex Berne for receiving his Master of Science 2022
Congratulations to Leonid Pereiaslov for passing his orals September 2022

Recent Papers

¹¹⁸Accounting for uncertain 3-D elastic structure in fault slip estimates, T. Ragon and M. Simons, Geophys. J. Int. 224, 1404-1421, doi.org/10.1093/gji/ggaa526, 2021. [PDF]

¹¹⁷A Stochastic View of the 2020 Elaziğ Mw Earthquake (Turkey), T. Ragon et al., Geophys. Res. Lett. 48, doi.org/10.1029/2020GL090704, 2021. [PDF]

¹¹⁶A comparison of predicted and observed ocean tidal loading in Alaska, H. Martens and M. Simons, Geophys. J. Int. 223, 454-470, doi.org/10.1093/gji/ggaa/323, 2020. [PDF]

¹¹⁵Interseismic Loading of Subduction Megathrust Drives Long-Term Uplift in Northern Chile, R. Jolivet et al., Geophys. Res. Letts., 47, doi.org/10.1029/2019GL085377, 2020. [PDF]

¹¹⁴Surface Deformation Related to the 2019 Mw7.1 and 6.4 Ridgecrest Earthquakes in California from GPS, SAR Interferometry, and SAR Pixel Offsets, E. J. Fielding et al., Seismol. Res. Lett., doi/10.1785/0220190302/582903, 2020. [PDF]