DETERMINING RADIATED SEISMIC ENERGY ON VT-A EVENTS OF MOUNT SINABUNG SINCE JULY TO DECEMBER 2011

• Main Author: KURNIAWAN (NIM : 12313072), ADITYO
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/25041
• Institution: Institut Teknologi Bandung

Mount Sinabung is one of the active strato volcanoes located in Karo Regency, North Sumatra Province, Indonesia. The volcano has been being active since 2010 where no activity occured since 1200 years ago. Around 2000 volcanic earthquakes occurred on Mount Sinabung from July to December 2011. Energy radiated from the volcanic earthquakes can provide information about the source mechanisms and the development of the volcano. <br /> <br /> There are two types of earthquakes that are distinguished by location of occurrence, namely Volcano Tectonic-A and distal Volcano Tectonic-A. In this period, the distal volcano-tectonic events were occured before the occurrence of Volcano Tectonic events A. Using the velocity waveform spectrum of S wave, the energy value ranges from 1.43 × 1016 erg to 2.02 × 1022 erg. The energy generated from Volcano Tectonic distal events is greater than the energy of the Volcano Tectonic-A. For monitoring and mitigation process needs, energy values need to be obtained rapidly. One way is to use the empirical formula between magnitude and energy. In this study, formulation Log E = 1.6261*M + 11,039 was obtained.