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ANALISIS JALUR SESAR LOKAL SEGMEN BARAT LAUT-TENGGARA MENGGUNAKAN METODE MIKROTREMOR DI DESA DLEPIH, KECAMATAN TIRTOMOYO, KABUPATEN WONOGIRI
This study aims to analyze the dominant frequency microzonation and amplification factor using the Horizontal to Vertical Spectral Ratio (HVSR) method, analyze the source wave direction pattern based on the H/V Rotate model, and analyze the subsurface structure model of the fault based on its shear wave velocity value. Microtremor data acquisition was carried out at 31 data points taken in May 2024 and 12 data points taken in October 2024. The data was processed using Geopsy Software to obtain the H/V Rotate Diagram and H/V Curve. H/V Rotate was then processed using Rockwork software to obtain the Rose Diagram model. From the H/V Curve, the dominant frequency and amplification factor values were obtained which were then processed into a microzonation map using Surfer software. The H/V curve was also processed using Dinver Software using the Ellipticity Curve method to obtain the vs value which would later be modeled in 3D using Rockwork Software. The dominant frequency values obtained in this study are in the range of 0.25 until 12.96 Hz and the amplification factor value is around 1.14 until 6.80.. The wave direction pattern shows the direction of the U-S orientation. This pattern represents the presence of a fault line along the research area. Based on the Solid model with shear wave velocity, the subsurface structure in the research area consists of soft soil to rocks with a value of 151.7 m/s until 1363 m/s. This model indicates the presence of a suspected downthrust fault line. The fault line identified from the measurement results is not as listed on the geological map.
FAKULTAS SAINS DAN TEKNOLOGI, UIN SUNAN KALIJAGA YOGYAKARTA
ANALISIS JALUR SESAR LOKAL SEGMEN BARAT LAUT-TENGGARA MENGGUNAKAN METODE MIKROTREMOR DI DESA DLEPIH, KECAMATAN TIRTOMOYO, KABUPATEN WONOGIRI (Text)
ANALISIS JALUR SESAR LOKAL SEGMEN BARAT LAUT-TENGGARA MENGGUNAKAN METODE MIKROTREMOR DI DESA DLEPIH, KECAMATAN TIRTOMOYO, KABUPATEN WONOGIRI (Other)
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