Geologists of the Geosciences Division (GSD) of Mines and Geosciences Bureau Regional Office No. IX attended a five-day training on georesistivity survey and data interpretation as part of the groundwater resources assessment program on Sept. 25-29, 2017 at MGB-IX Office, Zamboanga City. Two technical personnel from MGB-01, Socrates Gaerlan, Supervising Geologist assisted by Randy Apilado gave a hands-on training on the use of the georesistivity equipment on the field and interpretation of the acquired field data.The training is consists of lecture and fieldwork component to demonstrate the instrumentation process and enhance the technical capacity of geosciences personnel in conducting a georesistivity survey. The two-day field activity and actual georesistivity survey was piloted in Brgy. Mercedes and within the property of Zamboanga City Economic Zone, in Brgy. San Ramon.
Orientation and preparation of the field survey equipment including setting up the standard of the main georesistivity meter was done on day 1. A lecture on the basic and concepts of the geophysical survey was also discussed. The georesistivity meter was pilot tested in Brgy. Mercedes where three VES lines are completed. Up to 700 m of georesistivity lines were surveyed in three different site within the area during day 2. Three VES points were completed on the second day of the field component of the training. A survey inside the property of Zamboanga City Economic Zone (ZCEZ) in Brgy. San Ramon covers both Industrial Park 1 and 2. Prior to the conduct of the survey, the team had a courtesy meeting with the head of the agency and their technical team. It was agreed during the meeting that two technical personnel form the agency will join the team in the survey to gain insights on how the geophysical survey works. The last two days of the training were allotted for data interpretation using the 1XID software. The free software enables the team to identify certain rock layers that may contain groundwater that can be developed into a well. Results from individual processing varies greatly from each other and also from other software that is utilized for data processing. The trainer highly recommended that practice on the data interpretation should be done and also the proper data acquisition or field data gathering.
The discussion on the results of the data interpretation continued during the last day of the training. The trainer also presented their output including the cross section generated from the data gathered from ZCEZ VES location points. A sample of their georesistivity report was also shown to the team from their previous survey programs in Region 1.
The training concluded in the giving of certificate of appreciation to both trainers including photo session with the team.