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March 9, 20222022 03 10 12022 03 10 22022 03 10 32022 03 10 4

In line with its effort to improve the methodologies employed by the Mines and Geosciences Bureau (MGB), the Geohazards and Engineering Geology Section (GhEGS) of the Lands Geological Survey Division (LGSD) of MGB Central Office hosted the Virtual Training Workshop on Remote Sensing and Engineering Geology on February 28 to March 4, 2022. The said event was attended by representatives from the MGB Central Office, as well as representatives from the MGB Regional Offices. MGB Regional Office No. 8 (MGB RO8) was represented by Celes Emilio D. Sia (Geologist II) and Iris Yvette A. Cesista (Geologist) of the Geosciences Division.

Day 1 of the workshop focused on three main topics – Fundamentals of Geomorphology, Landforms and Processes, and Applications of Geomorphology in Geohazard Assessment. This was discussed by Ms. Arlene Dayao (Chief Geologist, Geosciences Division of MGB RO5). The topics emphasized the importance of geomorphology as a factor in geologic hazards (e.g., landslides, floods). An in-depth knowledge of the said topic could better understand these hazards and greatly enhance the quality of the outputs.

For the second day, topics on remote sensing were discussed by experts from the Philippine Space Agency (PhilSA). Dr. Ariel C. Blanco (Director, Space Information Infrastructure Bureau of PhilSA) discussed the overview of remote sensing, the different uses of satellite data, as well as projects and programs within PhilSA that utilizes remote sensing techniques. The subsequent sessions involved practical applications of remote sensing data such as interpretation of Digital Images, Basic Image Enhancement and SAR Image Processing. There was also a discussion on the various disaster risk reduction and management applications of remote sensing data, as well as the on-going collaborations of PhilSA with MGB and other Local Government Units, stakeholders, and researchers.

Day 3 focused heavily on structural and engineering geology. Dr. Ramon D. Quebral (Consulting Geologist, AMH Philippines, Inc.) discussed the basic principles of structural and engineering geology. He also presented different case studies from all over the country involving common practices and general applications of the said subject. Shortly after the presentation, there was also a discussion on the fundamentals and components of the Engineering Geological and Geohazard Assessment Reports – a report which serves as a requirement for certain projects requiring the issuance of an Environmental Compliance Certificate.

On the fourth day of the workshop, the discussion focused on seismic and volcanic hazards as it relates to Engineering Geological and Geohazard Assessment Reports, and applications of engineering geology in Post-Disaster Assessments. Dr. Arturo S. Daag (Chief Geologist, Geophysics Research and Development Division of the Philippine Institute of Volcanology and Seismology) discussed the seismic and volcanic hazard mapping conducted by PHIVOLCS. The afternoon session focused on the applications of engineering geology in Post-Disaster Assessments, discussed by Mr. Juanito A. Manzano, Jr. (Vice-President, Geotechnical Engineering CMA Geoconstruct Engineering Consultancy). He discussed about the different factors that influence the susceptibility of an area to landslides or flooding. Moreover, he provided examples of engineering techniques which can increase slope stability and mitigate flood hazards.

The last day of the training workshop serves as a continuation of the discussion by Mr. Manzano. This time, the discussion focused on engineering mitigating methods related to reclaimed areas and areas which undergo liquefaction. The afternoon session served as the closing program for the training workshop. Post-test and evaluation were done, followed by a summary of the workshop outputs and synthesis. Ms. Liza Socorro J. Manzano (Chief, LGSD of MGB-CO) delivered the closing remarks for the training workshop.

The 5-day event served as a venue to review the fundamental principles of hillslope and fluvial geomorphology, interpret remotely sensed data, introduce innovative tools for hazard assessment, and discuss applications of engineering geological techniques in disaster risk reduction.