CTBT: Science and Technology Conference 2025 - SnT2025

In-situ Calibration of CTBTO Seismic Monitoring Stations in Indonesia

P3.1-694

Not scheduled

1h

Zeremoniensaal

E-poster T3.1 Seismic, Hydroacoustic and Infrasound Technologies and Applications P3.1 Seismic, Hydroacoustic and Infrasound Technologies and Applications

Speaker

Benyamin Heryanto Rusanto (Indonesian Agency for Meteorological, Climatological and Geophysics (BMKG))

Description

The Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) operates five seismic monitoring stations in Indonesia. To ensure the traceability of measurement units for these seismometers, in-situ calibration is essential. This study presents a calibration methodology based on the ISO 17025 standard, employing a comparative method where the seismometer to be calibrated is placed side-by-side with a reference seismometer. The reference seismometer, provided by the Indonesian Agency for Meteorology, Climatology, and Geophysics (BMKG) as a CTBTO partner, has been previously calibrated. Several National Metrology Institutes (NMIs) have adopted this in-situ calibration method. By conducting in-situ calibration, the traceability of measurement units to the International System of Units (SI) for instruments installed at the monitoring stations can be guaranteed.