John Dale B. Dianala

John Dale B. Dianala


With my background in geology, I am primarily interested in studying the occurrence of earthquakes. I try to understand where, how often, and why earthquakes happen, and how big they could be, by exploring the mechanical properties of faults and the relationship between seismic and aseismic slip. I address these through geologic and geodetic investigation of fault deformation at different parts of the earthquake cycle, mostly through satellite radar (InSAR), mapping of geologic and geomorphic features, paleoseismology, and elastic dislocation modeling. My current study areas include the Philippines and the Tien Shan

The growing availability of high-resolution remotely-sensed data allows us to target areas that are deprived of detailed investigations.  In terms of earthquakes, the importance of this is two-fold:  we are able to understand not only the processes leading to and resulting from earthquakes, but also the potential risk of populations that are and could be exposed to earthquake-related hazards.  For example, in the Philippines — where most of my existing research has been on — recent significant earthquakes happened on previously unidentified faults.  Similar situations happen all over the world, like developing regions in central Asia, often to enormous socio-economic detriment.  Remote sensing has the potential to reduce these negative impacts, as well as aid our understanding of the underlying tectonic processes.

My DPhil is funded by the Newton PhD Programme, through the British Council and the Commission on Higher Education (Philippines).  I am also on study-leave from teaching in the University of the Philippines – Diliman.

Supervisors: Richard Walker and Barry Parsons


Dianala, J. D. B., Jolivet, R., Thomas, M. Y., Fukushima, Y., Parsons, B., & Walker, R. (2020). The relationship between seismic and aseismic slip on the Philippine Fault on Leyte Island: Bayesian modeling of fault slip and geothermal subsidence. Journal of Geophysical Research: Solid Earth. [Open Access]


Rimando, J.M., Aurelio, M.A., Dianala, J.D.B., Taguibao, K.J.L., Agustin, K.M.C., Berador, A.E.G., Vasquez, A.A (2019). Coseismic ground rupture of the October 15, 2013 Magnitude (Mw) 7.2 Bohol Earthquake, Bohol Island, Central Philippines, Tectonics, 38,


M.A. Aurelio, J.D.B. Dianala, K.J.L. Taguibao, L.R. Pastoriza, K. Reyes, R. Sarande, A. Lucero Jr., Seismotectonics of the 6 February 2012 Mw 6.7 Negros Earthquake, central Philippines, Journal of Asian Earth Sciences, Available online 16 December 2016, ISSN 1367-9120,