Active tectonics of the eastern java based on a decade of recent continuous geodetic observation

Purwaningsih, Retno Eka Yuni; Sekarsari, Adelia; Sari, Tika Widya; Pratama, Cecep; Wibowo, Sidik T.

doi:10.1016/j.geog.2021.12.004

Cited by 5 publications

(2 citation statements)

References 20 publications

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“…In another study but with no direct relation to educational aspects, we examined vulnerability to earthquake hazards in the Java northern regions [60] that poses increasing danger to local community in the northern coasts of Java. In addition to persistent threats from the active subduction zone located off the Java south coasts [1][2][3]11,12] potential earthquake sources from shallow crustal seismicity in the northern regions of Java induced by inland fault activity have been in search [61][62][63][64][65][66][67]. The primary goal of this study was to assess vulnerability in the presence of seemingly connecting crustal faults along the northern regions.…”

Section: Projects Towards Vulnerability and Disaster Mitigation Studymentioning

confidence: 99%

Continual Advance in Earth Physics Research Group at Physics Study Program, Unesa: What’s new and the next step

Prastowo,

Madlazim,

Realita

et al. 2023

J. Phys.: Conf. Ser.

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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.

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Section: Projects Towards Vulnerability and Disaster Mitigation Studymentioning

confidence: 99%

Continual Advance in Earth Physics Research Group at Physics Study Program, Unesa: What’s new and the next step

Prastowo,

Madlazim,

Realita

et al. 2023

J. Phys.: Conf. Ser.

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“…Investigations into shallow crustal seismicity in the Java northern regions have been completed with primary findings on empirical evidence of some active faults in the northern part of East Java [12][13], adding to the existing Kendeng Fault in the same province [9][10], identification of Baribis Fault and other active faults in West Java [14] and more recent publications relevant to the nature of Baribis Fault activity [15][16]. These studies have used various seismic and geophysical measurement techniques but with no reports on determining b and a values for the entire Java from the west to the east.…”

Section: Introductionmentioning

confidence: 99%

Vulnerability in the Java northen region in association with earthquake sources of tectonic origin

Fahmi,

Realita,

Risanti

et al. 2023

J. Phys.: Conf. Ser.

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While threats from the subduction zone off the Java south coast remain persistent, potential sources of a tectonic earthquake centered in the Java northern areas come into play. Despite their enigmatic presence and a clear shift of the sources from the mainland to the north from hypocentre relocation studies, this poses a danger to the community in the Java northern coastlines, increasing vulnerability to earthquake and tsunami hazards. The main aim of this study is thus to evaluate seismic hazards and corresponding analysis, hence assessing vulnerability with respect to the presence of active faults in the northern regions. The methods used here included a-value and b-value calculations inferred from seismogenic zonation made available for the study area and source mechanism determination derived from seismic inversion for two recent events recorded at the Java Sea. The results revealed that the a-value reached 8.55 in Zone 1, reflecting a high seismicity rate over the northern areas of West Java and Banten provinces, and the b-value was about 0.8 in Central Java and East Java, implying a relatively high-stress tectonic regime. The moment tensor solutions yielded sizes M w 6.7 at a depth of 539 km and M w 7.0 at a depth of 594 km with a major double-couple component for the normal faulting types of mechanism, consistent with reference. The results suggest the significance of awareness of seismic threats possible to occur in the Java northern regions; hence more investigations into detailed seismicity in the regions of interest for future research direction.

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Strain accumulation in the Mentawai Forearc Sliver, Indonesia, inferred from continuous GNSS-derived strain rate

Heliani,

Pratama,

Wibowo

et al. 2024

Geodesy and Geodynamics

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Active tectonics of the eastern java based on a decade of recent continuous geodetic observation

Cited by 5 publications

References 20 publications

Continual Advance in Earth Physics Research Group at Physics Study Program, Unesa: What’s new and the next step

Continual Advance in Earth Physics Research Group at Physics Study Program, Unesa: What’s new and the next step

Vulnerability in the Java northen region in association with earthquake sources of tectonic origin

Strain accumulation in the Mentawai Forearc Sliver, Indonesia, inferred from continuous GNSS-derived strain rate

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