Pemetaan Wilayah Rawan Bencana Gempabumi Berdasarkan Data Mikrotremor Dan Data Bor

Lantu, Lantu; Aswad, Sabrianto; Fitriani, Fitriani; Marjiyono, Marjiyono

doi:10.20956/geocelebes.v2i1.3721

Cited by 2 publications

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“…The geophysical method used in this research is the microtremor method and processed by the HVSR (Horizontal Vertical Spectre Ratio) method. This method is a method of comparing the spectrum of the horizontal component to the vertical component of the microtremor wave [6]. Microtremor consists of a basic variety of Rayleigh waves, it is thought that the peak period of the microtremor H/V ratio provides the basis of the S wave period.…”

Section: Introductionmentioning

confidence: 99%

Identification of Rock Characteristics Using the Microtremor Inversion Method at Air Putih Geothermal Field, Lebong Regency

Syah,

Al-Ansory,

Hardiansa

et al. 2024

J. Technomaterial Phys.

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Research has been carried out to identify rock characteristics based on Vs values using the microtremor method in the Air Putih geothermal field, Lebong Regency, which aims to determine the geothermal prospect area on rock characteristics using Vs values based on the microtremor method. The data obtained in this study were 20 measurement points obtained from data analysis by obtaining the H/V curve through Geopsy software and HVSR inversion to obtain the Vs value of the inverse. The results of this calculation indicate that at a depth of 0-4 meters the homogeneous Vs value 200 m/s, at a depth of 4 meters the Vs value 200-440 m/s, at a depth of 20 meters the value of Vs 440 -880 m/s and a depth of 20 meters homogeneous Vs value of 880 m/s and for the distribution of Vp values, at a depth of 0-5 meters the Vp values vary between 2000-2900 m/s, at depths of 6-20 meters in general the value of the Vp wave velocity is the same in the range of 3100-3800 m/s and at depth 21-100 meters the Vp value ranges from 3900-5100 m/s. This shows that the greater the depth, the denser the rock.

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Section: Introductionmentioning

confidence: 99%

Identification of Rock Characteristics Using the Microtremor Inversion Method at Air Putih Geothermal Field, Lebong Regency

Syah,

Al-Ansory,

Hardiansa

et al. 2024

J. Technomaterial Phys.

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Microzonation Mapping in Supporting Construction Plan, New Capital City of Indonesia (Case Study: Sepaku Sub-district, Panajam Paser Utara Regency)

Rahmania,

Rasmid,

Arisalwadi

et al. 2023

Advances in Physics Research

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Determination of East Kalimantan, particularly Sepaku Sub-District, Panajam Paser Utara Regency, and Kutai Karta Negara Regency as the New Capital City of Indonesia requires an in-depth and comprehensive study of various aspects, including the natural disaster of the earthquake. Based on earthquake records for the last 11 years, East Kalimantan is the province with the highest level of seismicity in Kalimantan Island, and nationally it occupies 26th rank. The existence of the local Meratus fault needs to be watched for because it lies beneath the land and is relatively active. It has the potential to damage areas with high seismicity levels. The potential for earthquake damage can be minimized by constructing earthquake-resistant infrastructure. The construction of earthquake-resistant infrastructure can be started by studying soil dynamics properties in the area, like natural frequency and peak ground acceleration. This research was conducted by applying the Horizontal-to-Vertical Spectral Ratio (HVSR) method to analyze both properties to calculate the vulnerability index through a microzonation study. The HVSR method is comparing the ratio of the spectrum of the horizontal component of the microtremor signal with its vertical part. The HVSR method utilizes the natural harmonic vibrations of the soil caused by natural activities. The result of the research on the study area shows an index of seismic vulnerability ranges from 0.2 to 2.1.

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Pemetaan Wilayah Rawan Bencana Gempabumi Berdasarkan Data Mikrotremor Dan Data Bor

Cited by 2 publications

References 0 publications

Identification of Rock Characteristics Using the Microtremor Inversion Method at Air Putih Geothermal Field, Lebong Regency

Identification of Rock Characteristics Using the Microtremor Inversion Method at Air Putih Geothermal Field, Lebong Regency

Microzonation Mapping in Supporting Construction Plan, New Capital City of Indonesia (Case Study: Sepaku Sub-district, Panajam Paser Utara Regency)

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