PENGGAMBARAN BAWAH PERMUKAAN DARI DATA GEMPA DENGAN METODE TOMOGRAFI (Studi Kasus : Jawa Tengah)

ASTRITA, ELDA and Khakim, Mokhamad Yusup Nur and Poerwono, Pradanto (2021) PENGGAMBARAN BAWAH PERMUKAAN DARI DATA GEMPA DENGAN METODE TOMOGRAFI (Studi Kasus : Jawa Tengah). Undergraduate thesis, Sriwijaya University.

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Abstract

Central Java is an areas which is vulnerable to earthquakes. This study aims to analysis subsurface structures in this area by using a local tomography method. This method estimated anomalies of P and S waves velocities, and Vp/Vs ratio from earthquakes data downloaded from the International Seismological Center (ISC) for 20 years (2000-2020). Arrival time data were selected for earthquake events with more than 5 phases/events for a tomography input in the LOTOS-13 software. The results shows that seismicity occurated mostly in the southern part of the study area. This seismicity was caused by friction between the Indo-Australian plate and the Eurasian plate in the subduction zone. In addition, in the depth of 0-30 km negative anomalies indicated as geological structures, such as opaque faults, lasem faults as well as a magma chamber of Mount Merapi.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Gempa bumi, Tomografi, Data ISC, Interpretasi seismik, Jawa Tengah
Subjects: Q Science > QE Geology > QE521-545 Volcanoes and earthquakes
Divisions: 08-Faculty of Mathematics and Natural Science > 45201-Physics (S1)
Depositing User: ELDA ASTRITA
Date Deposited: 19 Jan 2022 04:53
Last Modified: 19 Jan 2022 04:53
URI: http://repository.unsri.ac.id/id/eprint/61880

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