BULETIN FISIKA
Vol 25 No 2 (2024): BULETIN FISIKA

Relokasi Hiposenter Gempabumi dengan Menggunakan Metode Double Difference Wilayah Bali dan Sekitarnya

Devi Irma Putri (Udayana University)
I Ketut Sukarasa (Udayana University)
Rudy Darsono (Balai Besar Meteorologi, Klimatologi dan Geofisika Wilayah III Denpasar)
Winardi Tjahyo Baskoro (Udayana University)
Ni Nyoman Wendri (Udayana University)
I Made Satriya Wibawa (Udayana University)



Article Info

Publish Date
31 Aug 2024

Abstract

A study on the relocation of earthquake hypocenters using the Double Difference method has been conducted in Bali and its surrounding areas. This research was carried out at the Center for Meteorology, Climatology, and Geophysics Region III Denpasar. The purpose of this study is to find out the distribution of earthquake hypocenters before and after the relocation and to know the continuity of earthquake hypocenters in the Bali region. The data used are arrival time data of 1,815 earthquake events from January 1, 2014 to December 31, 2023, and data from 26 earthquake recording stations. The relocation method applied is the Double Difference method, which is processed with ph2dt and HypoDD. The relocation that has been carried out shows a good hypocenter position which is characterized by a residual value of travel time that is close to 0. The distribution of the earthquake hypocenter in the Bali area before the relocation spread throughout the region and after the relocation, the position of the hypocenter was getting closer to the source of the earthquake, namely in the subduction zone under the Bali area as shown in the cross-section results. In addition, based on the results of the analysis of the hypocenter of the earthquake after relocation, it was found that the trend of the hypocenter continued toward the subduction subduction zone.

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Journal Info

Abbrev

buletinfisika

Publisher

Subject

Earth & Planetary Sciences Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology Physics

Description

The Journal aims to promote the theory and application in the field of physics, and to encourage a vigorous dialogue between scholars and researchers all over the world. It presents original research articles, letters as well as review articles, publishes the latest achievements and developments in ...