Estimation of underground structure at Prambanan area, Yogyakarta, Indonesia

Journal Article · Fri Apr 24 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4915036· OSTI ID:22391588

Pramumijoyo, Subagyo; Wilopo, Wahyu; Husein, Salahuddin; Setianto, Agung ^[1]; Brotopuspito, Kirbani Sri ^[2]; Kiyono, Junji ^[3]

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1. Geological Engineering Department, Gadjah Mada University, Yogyakarta (Indonesia)
2. Physics Department, Gadjah Mada University, Yogyakarta (Indonesia)
3. Graduate School of Global Environmental Studies, Kyoto University, Kyoto (Japan)

In this study, we investigated the underground structure at Prambanan area, Yogyakarta. We performed single observations of microtremor at 124 sites in Prambanan area. The results enabled us to estimate the site-dependent shaking characteristics of earthquake ground motion. We also conducted 2-site bore holes investigation to gain a representative determination of the soil condition of subsurface structures in Prambanan. From the SPT of borehole observations, the prambanan area corresponds to relatively soil condition with Vs ≤ 298 m/s, the predominant periods due to horizontal vertical ratios (HVSRs) are in the range of 0.48 to 1.19 s and the frequency are in the range of 0.95 to 1.92 Hz. By making these observations, we can obtain a relationship between the predominant periods, frequency and distribution of the first layer thickness of the sediment.

• OSTI ID: 22391588
• Journal Information: AIP Conference Proceedings, Vol. 1658, Issue 1; Conference: ISEDM 2014: 4. International Sympsoium on Earthquake and Disaster Mitigation 2014, Bandung (Indonesia), 11-12 Nov 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
BOREHOLES
EARTHQUAKES
GAIN
GEOPHYSICS
GROUND MOTION
INDONESIA
LAYERS
SEDIMENTS
SEISMICITY
SEISMOLOGY
SOILS
SUBSURFACE STRUCTURES
THICKNESS
UNDERGROUND