About the Laboratory:

The Earthquake Geodesy and Geology (EGG) Laboratory specializes in understanding the spatio-temporal distribution of earthquakes by studying fault deformation. Our research focuses on crustal deformation analysis, fault modeling and morphology, and earthquake cycles.

We use remote sensing techniques such as satellite radar (InSAR), GPS data, geographic information systems (GIS), as well as geostatistics and machine learning algorithms. Through our research, we aim to contribute to understanding short and long-term fault behavior to contribute to disaster risk reduction and management initiatives. 

Laboratory Head

 John Dale B. Dianala, DPhil - Earthquakes, Tectonics, Remote Sensing

Contact Information:

Website: Earthquake Geodesy and Geology (EGG) Laboratory
Email: jddianala@nigs.upd.edu.ph
Location: NIGS Room 126

What we do:

• Satellite InSAR analysis and geodesy of the earthquake cycle
• Fault modeling to understand earthquake source processes and mechanics
• Mapping and constraining fault activity and earthquake reocurrences

Research Activities :

Ongoing Research Projects:

• Leveraging InSAR for Observation and modeling of earthquake Generators (LInOG) - DOST PCIEERD, March 2025
• Active faulting and earthquake potential of the Sindangan-Cotabato Fault

Undergraduate Research Projects:

2023

• Using machine learning to predict trace element concentration (Paul Villora, now exploration geologist at Itogon-Suyuoc | co-advised with Dr. Gabo-Ratio)
• Evaluating the foreshock statistics in the Philippines (Denisse Soriano, nor pursuing MS Seismology in Taiwan)

2024

• 1994 Aglubang River fault scarp analysis from Lidar Data (Aian Baal, now Project RA)
• The 1990 Luzon earthquake rupture: from historical to Lidar data (Micko Palma, now Project  RA at the SGT Laboratory)
• 2017 Lanao earthquake rupture and its relationship with regional faulting (Earl Isorena)
• The relationship of PSP-Eurasia convergence rate with seismicity rate and earthquake energy (Elisha Pena)
• Earthquake depth distributions in the Philippine Mobile Belt as an indication of seismogrnic depth (Cristan Malaiba, now a geohazards researcher at UP Resilience Institute)

2025

• Ground deformation of the 2013 Bohol earthquake using InSAR (Therese Bajarias)
• Scarp analysis of San Manuel and San Jose segments of the Philippine fault (Chester Lomboy)
• Is there a relationship between fault density and geometry complexity with earthquake sequence occurrence? (Ivan Bernardo)
• Preservation of the 1973 Ragay Gulf earthquake rupture in Phil-Lidar data (JM Mardinal)

Graduate Research Projects:

• Seismotonics of the 2007 Hinunangan earthquake (Yel Santiago)