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A topographic map of Indonesia with ocean bathymetry surroundings, illustrating Indonesian territories at the triple junction of the three major plates. Sumatera Trench and Java Trench are part of the Sunda Arc. Insert shows the position of the Indonesian archipelago
Source publication
Earthquake size can be estimated using magnitude-rupture area scaling developed from modelled fault dimensions and measured moment magnitudes. In this study, a measure of a fault plane geometry was provided by rupture area A and the size scaled with moment magnitude Mw. Using global earthquakes datasets containing 90 events with varying magnitudes...
Contexts in source publication
Context 1
... geological and tectonic settings lead to the potency for seismic threats possible to occur throughout the country induced by either moderate to large earthquakes from sources of active crustal faults (Irsyam et al., 2017) or potential megathrust events from complex subduction processes (Susilo et al., 2019;Triyoso et al., 2020;. Figure 1 shows the geographical position of Indonesia with respect to the major tectonic plates. Sarawak and Sabah are part of Malaysian territories, which lie on Borneo Island, the second largest island in Indonesia. ...
Context 2
... particular region is predicted to undergo a future catastrophic seismic event with a high probability. Within this context, Widiyantoro et al. (2020) reported the gaps close to Java Trench (see Figure 1) off the south coast of Java Island based on three seismic scenarios. ...
Context 3
... geological and tectonic settings lead to the potency for seismic threats possible to occur throughout the country induced by either moderate to large earthquakes from sources of active crustal faults (Irsyam et al., 2017) or potential megathrust events from complex subduction processes (Susilo et al., 2019;Triyoso et al., 2020;. Figure 1 shows the geographical position of Indonesia with respect to the major tectonic plates. Sarawak and Sabah are part of Malaysian territories, which lie on Borneo Island, the second largest island in Indonesia. ...
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Citations
... The empirical relationship between fault area, fault length, and fault width can be obtained using a regression approach, which are empirical regression equations that relate fault dimensions to earthquake magnitude [20] [21]. Hence, the calculation of fault length, fault width, and dislocation in this model used the regression equation from Wells and Coppersmith [22]. ...
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Earth Physics Research Group (EPRG) is one of three groups of research running at Physics Study Program, the State University of Surabaya, Indonesia, where a number of research projects with corresponding topics have been conducted (and some are in progress) by the group members and associated students having final projects in the field of earth physics since 2018. Whereas the research roadmap of the group has been presented in association with definitive research projects for 25 years long starting from 2011, the specific goal of this paper is to shortly summarise all academic achievement in terms of research performance made by the group members during the last five years. The majority of the recent works was mainly based on computational work, where some were completed in collaboration with researchers from other universities and a national agency and others were performed by the group members and selected students. The topics were spread across disciplines in earth physics that included tectonic earthquakes, tsunami generation and propagation of seismic and non-seismic origin, volcanic eruptions and an integrated disaster mitigation study. A small portion of the projects were performed using a chosen method of applied geophysics. These studies have ended up with publications in recent years, where the saline points of the key findings are here presented. Future studies focusing on vulnerability to earthquake hazards in the northern areas of Java and on volcanic and meteo-tsunamis are also discussed in the context of possible tsunamis induced by seismic sources or volcanic processes.
