University of Mataram studies geomagnetism to enhance earthquake preparedness

Mataram (ANTARA) - The University of Matrum (Unram) is researching changes in the Earth’s magnetic field, or geomagnetism, to study patterns of seismic activity as part of an effort to increase earthquake preparedness in West Nusa Tenggara (NTB).

The Head of the Disaster Mitigation Master’s Programme at the University of Mataram, Teti Zubaidah, stated that the research is conducted by analysing changes in geomagnetic data during periods of increased seismic activity.

Teti explained that the research team is comparing geomagnetic data with several past earthquake events, including those in Flores, Lombok, and Aceh, to observe the accompanying patterns of magnetic field changes.

The observed changes in the magnetic field include the magnitude of the magnetic field, the direction of change, and the angle. This data is then analysed to determine its correlation with seismic activity.

She noted that the study is based on the property of rocks, which can undergo changes in magnetism when subjected to pressure. This pressure is related to the tectonic processes occurring at plate boundary regions.

“Therefore, that is what we are monitoring and tracing—how much it decreases,” Teti explained.

Furthermore, she mentioned that the research requires long-term data collection, meaning the results cannot be targeted for completion within a specific timeframe.

The research team has been analysing data from approximately 1950 to the present, comparing it against numerous earthquake events recorded during that period.

Teti emphasised that the geomagnetic research is not intended to predict the exact timing of earthquakes. Instead, continuous observation is expected to reveal patterns of seismic activity, thereby enhancing preparedness for potential earthquakes.

In addition to continuing earthquake mitigation research, the University of Mataram has begun developing volcanological mitigation studies. One of these efforts includes plans to rebuild a geomagnetic observatory station on the slopes of Sembalun.

Teti stated that the development of geomagnetic observation requires continuous and high-quality data so that patterns of magnetic field changes can be better analysed over time.