Analisis Seismotektonik dan Periode Ulang Gempa Bumi pada Wilayah Jawa Timur Menggunakan Relasi Gutenberg–Richter
Keywords:Gutenberg-Richter; Sismotectonic; Earthquakes; Likelihood Estimation; b-value
Indonesia is located at the confluence of three tectonic plates which have caused Indonesia to have many volcanoes and become an area prone to earthquakes or tsunamis. According to the Center for Volcanology and Geological Disaster Mitigation (PVMBG) records, the Department of Energy and Mineral Resources shows that Java is one of the regions in Indonesia that is prone to earthquakes. The impact of an earthquake can be minimized by assessing earthquake characteristics in an area as a form of disaster mitigation. One form of this study is to conduct seismotectonic analysis as an indicator of the potential for earthquakes in Indonesia. The analysis performed is by statistical analysis of seismic level values (a) and rock fragility level values (b). In this study seismotectonic analysis and the period of earthquake re-occurrence in the East Java region with the relation of Gutenberg-Richter with the composition into 8 research areas. The results obtained show region III is a region that has a high risk of earthquakes, and region V is an area with a low risk of earthquake.