Analisa Momen Tensor Dan Mekanisme Pusat Gempa Bumi Wilayah Maluku Utara Sepanjang Tahun 2016 Dengan Magnitude ≥5 SR Memanfaatkan Program ISOLA-GUI

Pratama, Hardiansyah (2018) Analisa Momen Tensor Dan Mekanisme Pusat Gempa Bumi Wilayah Maluku Utara Sepanjang Tahun 2016 Dengan Magnitude ≥5 SR Memanfaatkan Program ISOLA-GUI. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian dengan fokus analisa momen tensor dan pola bidang patahan dilakukan pada gempa bumi Wilayah Maluku Utara pada tahun 2016 magnitude ≥ 5SR dengan memanfaatkan program ISOLA-GUI. Penelitian dilakukan dengan tujuan untuk menentukan nilai momen tensor gempa bumi tektonik dan bentuk pola bidang patahan pada Wilayah Maluku Utara dengan program ISOLA-GUI. Prinsip program ini mengolah tiga komponen gelombang seismik yang terekam dalam seismogram. Data berupa gelombang diolah sesuai masing-masing event gempa yang terjadi dan digunakan perhitungan fungsi Green serta inversi. Pada tahap inversi digunakan 4 filter f1, f2, f3, f4 yang diisi sesuai event. Plotting untuk hasil dilakukan setelah tahap inversi dan didapatkan nilai variance reduction 0.87, 0.99, 0.53, 0.82, 0.92, dan 0.62. Plot selanjutnya berupa nilai momen tensor beserta pola bidang patahan yang disimbolkan dengan beachball. Pengolahan tersebut dilakukan pada seluruh event gempa ============ The research with focus of moment tensor analysis and fault mechanism pattern have been measured by ISOLA-GUI program to earthquake events at Maluku Utara all to 2016 with magnitude ≥5SR. The research aims to determine moment tensor and fault mechanism pattern have been measured by ISOLA-GUI. This program’s principle is using three seismic component that recorded by seismogram. Data from seismogram as wavelength processed accordingly to each earthquake events and also processedusing Green function with filter inversion. The filter inversion step used four filters such as f1, f2, f3, f4 that will be filled accordingly to each events. Plot for the result is done after the inversion and obtained value variation reduction 0.87, 0.99, 0.53, 0.82, 0.92, dan 0.62. The next plot is about moment tensor value and also the fault plane pattern that symbolized by beachball. This process was done for whole of the earthquake events.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: ISOLA-GUI, fungsi Green, inversi, plotting, beachball, variance reduction; Green function, inversion.
Subjects: G Geography. Anthropology. Recreation > GB Physical geography
Q Science > QE Geology > QE538.8 Earthquakes. Seismology
Divisions: Faculty of Mathematics and Science > Physics > (S1) Undergraduate Theses
Depositing User: Hardiansyah Pratama
Date Deposited: 12 Apr 2018 04:43
Last Modified: 12 Apr 2018 04:43
URI: http://repository.its.ac.id/id/eprint/50798

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