CTBT: Science and Technology Conference 2025 - SnT2025

Assessment of Hypocenter Accuration and Dissemination Performance of Indonesia Tsunami Eraly Warning System (INATEWS)

P5.1-845

Not scheduled

20m

Zeremoniensaal

E-poster T5.1 Synergies with Global Challenges P5.1 Synergies with Global Challenges

Speaker

Dr supriyanto rohadi (Indonesian Agency for Meteorology, Climatology and Geophysics (BMKG))

Description

In this study, we present the assessment of the hypocenter location and the dissemination information in the Indonesia Tsunamy Early Warning system (INATEWS), Indonesia. The determination of accurate hypocentral parameters is crucial in seismic monitoring and early warning. In this study, we present the earthquake parameters computed by SeiscomP from the January 2020 to December 2024 scale for events with magnitude M 2.5, and the detection timeline. From our analysis the epicenter location generally differs less than 25 km from the final epicenter coordinates; focal depths are less well constrained and differ generally less than 20 km. The assessment of the magnitude shows significant differences with respect to the magnitude based on final catalogs. Our study result shows that the epicenter coordinates and the magnitude values converge rather quickly toward the final values. Generally, BMKG (Agency for Meteorology Climatology and Geophysics) can provide reliable information of the earthquake source parameters less than 3 minutes and disseminate tsunami warning message within less than 10 minutes after origin time.