The Geophysics Study Program, Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Tanjungpura, held a Public Lecture on Geophysics entitled “Imaging the Subsurface without Excavation: Applications of Geophysics in Geotechnical Engineering” on Wednesday, 19 November 2025, at Theater 2, Universitas Tanjungpura Conference Building.

The lecture featured Diva Alfiansyah, S.Si., M.Sc., Founder of CV Inti Bumi Geoservice and a Researcher at the Department of Geosciences, as the invited speaker. The event was attended by students and members of the academic community with a strong interest in the application of geophysical methods in geotechnical engineering and infrastructure development.

In his presentation, the speaker explained how geophysical technologies can be utilized to map subsurface conditions in a fast, accurate, and non-destructive manner. Various applications were discussed, including soil characterization, detection of potential geotechnical hazards, and data support for infrastructure planning and design. Geophysical approaches were highlighted as efficient solutions that minimize the need for direct excavation.

The lecture, which took place from 08:45 to 11:30 WIB, served as an important platform to broaden students’ perspectives on the practical applications of geophysics in professional and industrial contexts. Interactive discussions between the speaker and participants further enriched the understanding of the challenges and opportunities associated with applying geophysics to sustainable development.

The Geophysics Study Program FMIPA UNTAN extends its appreciation to all participants and supporting parties, particularly HAGI West Kalimantan and the Geophysics Student Association of FMIPA UNTAN, for their contributions to the success of this event. Through this activity, it is hoped that students will be increasingly motivated to develop their competencies and strengthen the role of geophysics in risk assessment and the pursuit of a safer and more sustainable future.