Pampanga-Zambales Landslide Analysis using Aerial Imagery

 

Turnover of data to UPRI team. UPRI researcher (Audrei Ybanez) discussing the landslide distribution in the Zambales mountain range

 

The analysis of the geophysical effects of the 22 April 2019 Pampanga-Zambales Earthquake is a collaboration with SRDP Consulting, Inc. Memorandum of Agreement No. HDDU-2009-C-296 was approved in 2019 to collect data on the geologic effects and mechanisms related to the 2019 Central Luzon earthquake. SRDP Consulting, Inc. gathered and completed the aerial shots of the Zambales and Pampanga mountain ranges in October 12, 2019, and provided the necessary equipment and technological expertise, including a manned aircraft-based mapping system, quadcopters, and a fixed wing aircraft.

Orthomosaic imagery of the Pampanga-Zambales mountain range

 

Orthomosaics, 3D models, DSM and DTM data were delivered to the UPRI team last December 2019. The team aims to analyze the data based on the landslide distribution and characteristics which may be associated to the earthquake source. The team worked on the landslide inventory and distribution using GIS analysis and remote sensing. PlanetScope data from April 16, 21 to 25 revealed significant landslides. This remote sensing technique helped in analyzing the before and after April 22 earthquake. Audrei Anne Ybanez, Carmille Escape, Angelu Bermas and Jannine Vasquez worked on the landslide slope,delineation, flow, and hazard distribution.