Subduction modelling by Tomography inversion around Lombok

Abstract

In July 2018, Lombok Island in Indonesia shaked by earthquake of Flores Fault. The earthquake is felt in surounding Lombok like Bali. There are two major earthquake source in Lombok, they are Flores fault in the north, and subduction zone in the south. There are more than 300 fatalities of human, and more than 270.000 refugees. The government of Indonesia established that Lombok Earthquake was a national disaster. This research is aimed to describe how the subduction zone around Lombok both it come two major of earthquake source and to answer the rumor is the earthquake affect Rinjani vulcano in Lombok activity or not.

2D and 3D modelling of Molucca Sea double subduction zone based on primary waves travel time seismic tomography inversion

“…In the medical field, the human body is an object that is described by X-Rays which are detectors. Then with a certain process, the condition of the human body can be described for doctors analysis (Palupi et al, 2019). In seismology, the earthquake source (hypocenter) transmits energy in the form of primary and secondary waves to the earth's surface due to the movement of tectonic plates, this is the same as X-Ray in the medical field.…”

“…The arrival time of the T body wave from an earthquake i to a seismic station k is expressed using the ray theory as the following integration equation (Palupi et al, 2019):…”