An Overview of The New Indonesian Active Fault Research Program  

Authors / CoAuthors

Horspool, N. | Cummins, P.R. | Natawidjaja, D.H. | Yulianto, E. | Meilano, I.

Abstract

In mid 2010 an Indonesian team of scientists and practicians published the new Indonesian probabilistic seismic hazard analysis (PSHA) map. The new PSHA map will replace the previous version from 2002. One of the major challenges in developing the new map is that data for many active fault zones in Indonesia is sparse and mapped only at the regional scale, thus the input fault parameters for the PSHA inheret unavoidably large uncertainties. Despite the fact that most Indonesian islands are teared by active faults, only Sumatra has been mapped in sufficient detail. In other areas, such as Java and Bali, the most populated and developed regions, many active faults are not well mapped and studied. These include the well known Cimandiri-Lembang fault in west Java and the Opak fault near Jogyakarta that released the destructive M6.3 Yogyakarta earthquake in 2006. This year we start a national program to systematically study major active faults in Indonesia. The study will include the acquisition of high-resolution topography and images required for detailed fault mapping, measuring geological sliprates and locating good sites for paleoseismological studies. We will also conduct GPS-campaign surveys to measure geodetic sliprates. To study submarine active faults, we will collect and incorporate bathymetry and marine geophysical data. The research will be carried out, in part, through masters and Ph.D student thesis in the new graduate study program and research center, called GREAT - CrATER (Graduate Research for Earthquake and Active Tectonics and Center for Active Tectonics and Earthquake Research), hosted by LIPI and ITB, in partnership with the Australia-Indonesia Facility for Disaster Reduction (AIFDR). In the first four years of the program we will select several sites for active fault studies, particulary faults that pose the greatest risk to society.

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nonGeographicDataset

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71493

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• External Publication

( Theme )

• earthquakes

( Theme )

• geohazards

( Theme )

• seismology

Australian and New Zealand Standard Research Classification (ANZSRC)

• Earth Sciences

• Published_Internal

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2011-01-01T00:00:00

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