Mikrozonasi Kegempaan Berdasarkan Parameter HVSR di Kabupaten Pacitan

Safrian, Alif Haidar (2018) Mikrozonasi Kegempaan Berdasarkan Parameter HVSR di Kabupaten Pacitan. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

Text 01111440000095-Undergraduate_Theses.pdf Restricted to Repository staff only Download (2MB) | Request a copy

Abstract

Sejak tahun 1977 – 2014, di wilayah Kabupaten Pacitan terdapat 18 gempa yang telah terjadi. Seluruh episenter tersebut berada di darat, sehingga dapat menimbulkan kerusakan yang besar. Oleh karena itu, mikrozonasi kegempaan berdasarkan parameter HVSR perlu dilakukan, untuk mengetahui karakteristik tanah setempat yang mampu menimbulkan kerusakan yang besar. Hasil pengolahan HVSR mikrotremor ini antara lain frekuensi natural dan faktor amplifikasi, yang kemudian digunakan untuk mendapatkan nilai indeks kerentanan tanah dan ground shear-strain. Selanjutnya seluruh hasil pengolahan dipetakan, dengan hasil mikrozonasi kegempaan menunjukkan bahwa daerah yang sangat beresiko ialah Kecamatan Pacitan. Hal ini dikarenakan Kecamatan Pacitan memiliki nilai indeks kerentanan tanah dan ground shear-strain yang tinggi, dengan formasi batuannya berupa endapan aluvium yang termasuk lapisan lunak.
===========================================================================Since 1977 – 2014, in the Regency of Pacitan there were 18 earthquakes that have occured. It caused massive damage because all the epicenters were on the ground. Therefore, research about identifying the characteristic of the local ground in Pacitan Regency using seismic microzonation based on HVSR parameters is necessary. The results of HVSR method are natural frequency and amplification factor which are then used to obtain the ground vulnerability indices and the ground shear-strain. Futhermore, the entire processing results are mapped, and the results of the seismic microzonation show that Pacitan Regency is a very risky zone in term of the earthquake damage level. This is due to very high ground susceptibility indices and ground shear-strain, where the rock formations are alluvium deposits that included in the soft layer.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Gempa, HVSR, Kontras impedansi, Sedimen, Sesar
Subjects:	Q Science > QA Mathematics > QA278 Cluster Analysis. Multivariate analysis. Correspondence analysis (Statistics) Q Science > QE Geology > QE538.5 Seismic tomography; Seismic waves. Elastic waves Q Science > QE Geology > QE538.8 Earthquakes. Seismology Q Science > QE Geology > QE604 Deformation
Divisions:	Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Alif Haidar Safrian
Date Deposited:	01 Jul 2025 02:39
Last Modified:	01 Jul 2025 02:39
URI:	http://repository.its.ac.id/id/eprint/60766

Actions (login required)

View Item