DIDP Participates in Hazard Mapping Mapshop in Tagaytay
Integrating Disaster Risk Reduction and Climate Change Adaptation (DRR-CCA) in Local Development Planning and Decision Making Processes is a project of the National Economic Development Authority (NEDA) in partnership with the United Nations Development Programme (UNDP) and the Australian Agency for International Development (AusAID). The project aims to mainstream the integrated concerns of disaster risk reduction and climate change adaptation into the Provincial Development and Physical Framework Plans (PDPFP).
One of its activities is the capability building on Geographic Information System (GIS) application for DRR-CCA Hazard Mapping. The 3rd batch of the Hazard Mapping Workshop was held on June 5-11, 2011 at Taal Vista Hotel, Tagaytay City, participated by provincial LGUs, and regional personnel from the Mines and Geosciences Bureau (MGB) and NEDA all over the country.
Participants from Region XI were Miguel S. Herrera III and Engr. Orville Dipaling of NEDA XI, Engr. Ingrid Fontanella of Davao Del Norte, Caroline Cossid of Davao del Sur, Kenny Omambat of MGB XI, and Noel Dacanay of DIDP PMO. The objective of the Mapshop is for the provinces to complete and digitize all hazard maps needed in preparing their DRR-CCA enhanced PDPFP. Five (5) tutors from the University of the Philippines - Training Center for Advanced Geodesy and Photogrammetry (UP-TCAGP) were present to assist the participants in preparing and digitizing their maps, supervised by Reynaldo Punongbayan Jr. of the Regional Development Coordination Staff of NEDA (NEDA RDCS).
Immediately after the arrival and check-in of the participants at the hotel on June 5, a review on Geographic Information System (GIS) was conducted. The following day, the Mapshop proper commenced after the Preliminaries and Context Setting, generating scenario maps using Rapid Earthquake Damage Assessment Software (REDAS). Developed by DOST-PHIVOLCS, REDAS can be used to simulate various earthquake scenarios to generate ground shaking, liquefaction and earthquake-induced landslide hazard maps in a format which can be further processed using GIS. It also has the capabilities to provide a historical seismicity of any given area within the Philippines and the indicative location of fault zones.
The participants were able to determine the fault lines and trenches near their province, gather historical seismicity within a 100-200 km radius, and select the highest intensity and depth occurring in a fault or trench. With this, they created a scenario using REDAS by choosing a given fault and locating the epicenter (the participants will record the coordinates of the epicenter they chose for the documentation). The scenario was generated using the historical seismicity as parameters of the intensity and the depth as well as the azimuth of the fault line. The participants will generate a maximum of five scenarios. The facilitator/s also taught them to convert raster files (from REDAS) to vector files (shape file) using ArcGIS 9.3 and reclassify the result to visualize the map and make it more presentable and easier to understand. The participants also did the documentation of the result scenarios, and were taught about geo-referencing and digitization of other raster disaster maps like tsunami, flood prone, rain-induced landslide, as well as Mapping standards and presentation formats of the outputs.
At the end of the Mapshop, Region XI participants submitted the expected outputs to the facilitator. For the continuation of this activity, the Regional Methodology Updating Mapshop was scheduled on July 13-15, 2011 at NEDA-RDC XI Center Conference Hall, Bangkal, Davao City.