THE EMPIRICAL FORMULA DETERMINATION OF LOCAL AND CODA MAGNITUDE AND ITS RELATIONSHIP WITH RADIATED ENERGY FOR MOUNT SINABUNG
<p align="justify">Indonesia is an archipelago located in the equatorial region which become the meeting place of three major plates of the world and included in the ring of fire zone, so that Indonesia has a significant potential for volcano disaster, one of which is the potential d...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/29652 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | <p align="justify">Indonesia is an archipelago located in the equatorial region which become the meeting place of three major plates of the world and included in the ring of fire zone, so that Indonesia has a significant potential for volcano disaster, one of which is the potential danger of Mount Sinabung. For the purpose of disaster mitigation, we need a mechanism where volcanic energy release value can be determined quickly to support the effectiveness of evacuation-related decision-making. However, on its implementation there are some obstacles because the spesific magnitude equation for Mount Sinabung area has never been made. So far, magnitude calculations use references from studies in other areas that are thought to have similar conditions to Mount Sinabung. In this research, the empirical equations of local and coda magnitude, also the equations of relation between magnitude and energy for Sinabung are determined using 188 deep volcanotectonic earthquake data from October 2010 to December 2011 period. The study is conducted by choosing the arrival time of P-wave, S-wave, maximum amplitude of S-wave phase and coda time. The obtained result will be converted in the form of magnitude, so the value of model parameters on the basic equations of magnitude and energy can be determined by linier inversion. Then, we get 𝑀𝐿 = 𝑙𝑜𝑔(𝐴) + 0.8717𝑙𝑜𝑔(𝑟) + 0.0407𝑟 − 3.8423 and 𝑀𝑐 = 0.8546𝑙𝑜𝑔(𝑟) + 0.0584𝑟 − 0.7216, also relationship equation 𝑙𝑜𝑔(𝐸) = 0.9584 𝑀𝐿 + 17.196 and 𝑙𝑜𝑔(𝐸) = 0.4048 𝑀𝑐 + 17.643.<p align="justify"> <br />
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