Volume 12 Issue 1 - November 2018

  • 1. Identification of buried object by using the hvsr method

    Authors : Gatot Yuliyanto, Udi Harmoko, M Irham Nurwidyanto

    Pages : 19-22

    DOI : http://dx.doi.org/10.21172/1.121.05

    Keywords : HVSR, frequency, peak, amplitude spectra

    Abstract :

    Abstract- In order to identify a buried object in a sediment; a solid concrete cylinder of 1 m long and 30 cm in diameter was buried at a depth of 1 m and oriented north-south with 450inclination. This cylinder was used for modeling purposes. The next part was installing a square array of 13-point geophones with a two-meter aperture. Measurement points were separated 1 m from each other. One central measurement point is located just above the buried object for the measurement of background vibration. Measurements were made with a 100 Hz frequency count. Subsequent comparison of horizontal and vertical spectra was carried out using the Konno-Ohmachi smoothing method with 40 smoothing constant and 5% cosine sharpening, and also STA/LTA values that range from 0.2-2.5. Based on the spectra profile of HVSR amplitude for each line, it is inferred that the HVSR peak frequency correlates well with the buried object in the sediment. The highest HVSR amplitude was obtained on the spot just above the buried object.

    Citing this Journal Article :

    Gatot Yuliyanto, Udi Harmoko, M Irham Nurwidyanto, "Identification of buried object by using the hvsr method", https://www.ijltet.org/journal_details.php?id=939&j_id=4732, Volume 12 Issue 1 - November 2018, 19-22, #ijltetorg