Analisis Percepatan Getaran Tanah Maksimum Untuk Memetakan Kerawanan Bencana Gempa Bumi dengan Metode Fukushima-Tanaka, Esteva dan Euclidean Distance di Pulau Lombok

Abstract

Lombok island is a small area located on the border between the large Asian plate and the Autralian plate so that the islan of Lombok is verry vulnerable to the earthquake disasters. The level of damage caused by an earthquake depends on the strength and quality of the building, geological, and geotechtonic conditions and the maximum ground vibration acceleration of the area. This study aims to analyze the acceleration of ground vibrations to map earthquake vulnerability using the Fukushima Tanaka, Esteva, and Euclidean Distance methods on the island of Lombok. The data used is secondary data for earthquakes on the island of Lombok in Juli-September 2018. The calculation result show that the maximum ground vibration acceleration value is the highest of 100.810 gal located in the districts of EastbLombok and North Lombok. While the smallestmaximum ground vibrations acceleration value occurs in the Mataram and surrounding areas with a value of 0,3603 gal. From the three formulations, it can be seen that the value of ground vibration acceleration calculated in the area of the island of Lombok using the Fukushima Tanaka method is the most appropriate formula for calculating the value of ground accelaration on the Lombok island. That is because the value of the ground vibration acceleration from Fukushima Tanaka is almost the same as the ground vibration acceleration value from the accelerograph