Volcano-Tectonics (VTEC)

About us

The Volcano-Tectonics (VTec) laboratory, housed by the National institute of Geological Sciences, focuses primarily on theoretical and experimental research on the reciprocal influence of volcanoes and their basement. Over the years, its research has expanded into hazards mapping and modelling for various natural disasters, such as volcanic activity, earthquakes, floods, rainfall-induced landslides, and storm surges. They leverage on scientific tools such as Geographic Information Systems (GIS), remote sensing, computational modeling, and aerial photogrammetry to study disaster events such as the 2006 Guinsaugon landslide, 2006 Mayon lahars, Barangay Andap debris flow in 2012, Typhoon Haiyan in 2013 and numerous floods in Iloilo, Mindoro, Cagayan de Oro and Metro Manila.


Alfredo Mahar Francisco Lagmay, Ph.D.


Research Activities


Ybañez, R. L., Ybañez, A. A. B., Lagmay, A. M. F. A., & Aurelio, M. A. (2021). Imaging ground surface deformations in post-disaster settings via small UAVs. Geoscience Letters, 8(1), 1-14.

Lagmay, A. M. F., Balangue-Tarriela, M. I. R., Aurelio, M., Ybanez, R., Bonus-Ybanez, A., Sulapas, J., … & Rosell, N. (2021). Hazardous base surges of Taal’s 2020 eruption. Scientific Reports, 11(1), 1-11.

Hernández, P. A., Melián, G. V., Asensio-Ramos, M., Padrón, E., Sumino, H., Pérez, N. M., … & Lagmay, A. M. (2021). Geochemical and isotopic evidence of volcanic plumbing system processes from fumarolic gases of Taal volcano, Philippines, prior to the January 2020 eruption. Chemical Geology, 574, 120216.

Ballesteros, C., Santiago, J., Mendoza, J., & Lagmay, A. M. F. (2021, April). Vulnerability and Risk Assessment to Hydrometeorological Hazards in the City of Naga, Cebu, Philippines. In EGU General Assembly Conference Abstracts (pp. EGU21-10488).

Ybañez, R. L., Romaguera, P. J., Malamud, B. D., & Lagmay, A. M. F. A. (2020, December). A Multi-Hazard Interactions Framework for the Philippines. In AGU Fall Meeting Abstracts (Vol. 2020, pp. NH022-0002).

Chaivutitorn, T., Tanasakcharoen, T., Leelawat, N., Tang, J., Caro, C. V. C., Lagmay, A. M. F. A., … & Imamura, F. (2020). Statistical analysis of building damage from the 2013 super typhoon haiyan and its storm surge in The Philippines. Journal of Disaster Research, 15(7), 822-832.

Ybañez, R., Lagmay, A. M. F., & Malamud, B. (2020). Philippine Natural Hazard Interactions: History, Processes, and Occurrence [Presentation]. Ph.D. candidacy exam.

Lagmay, A. M. F., & Baldago, M. C. (2020). A timeline of Mindanao disasters. University of the Philippines Press.

Lagmay, A. M. F. A., Escape, C., Ybañez, A. A., Suarez, J. K., & Cuaresma, G. (2020). Anatomy of the Naga City landslide and comparison with historical debris avalanches and analog models. Frontiers in Earth Science, 8, 312.


Research Laboratories