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Title: Estimation of underground structure at Prambanan area, Yogyakarta, Indonesia

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.
Authors:
 [1] ;  [2] ; ; ; ;  [3] ;  [4] ;  [5]
  1. Geology Department, Yangon University, Yangon (Myanmar)
  2. (Indonesia)
  3. Geological Engineering Department, Gadjah Mada University, Yogyakarta (Indonesia)
  4. Physics Department, Gadjah Mada University, Yogyakarta (Indonesia)
  5. Graduate School of Global Environmental Studies, Kyoto University, Kyoto (Japan)
Publication Date:
OSTI Identifier:
22391588
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1658; Journal 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)
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; BOREHOLES; EARTHQUAKES; GAIN; GEOPHYSICS; GROUND MOTION; INDONESIA; LAYERS; SEDIMENTS; SEISMICITY; SEISMOLOGY; SOILS; SUBSURFACE STRUCTURES; THICKNESS; UNDERGROUND