Wahyuni, Ayusari
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ANALISIS BESAR KECEPATAN GELOMBANG PRIMER PADA STASIUN BMKG WILAYAH IV MAKASSAR Wahyuni, Ayusari; Ahmad, Nurul Fitriah; Nurhidayanti, Nurhidayanti; Astuti, Sri; Indah, Indah
JFT : Jurnal Fisika dan Terapannya Vol 4 No 2 (2017): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (522.895 KB) | DOI: 10.24252/jft.v4i2.10254

Abstract

Data analysis has been carried out to determine Primary wave velocity (Vp) using official data of the monthly report of Geophysics, Regional Earthquake Center (PGR) 4, Center for Meteorology Climatology and Geophysics (BMKG) region IV Makassar with seven stations namely BKSI (Bulukumba), SPSI (SPSI) Sidrap), KAPI (Kappang), PMSI (Majene), TTSI (Tana Toraja), LUWI (Luwuk Geofon Station, and MPSI (Mapaga). Based on data analysis, values of Vp ranged from 12.9105 km/s to 214437.1 km/s.
IDENTIFIKASI STRUKTUR BATUAN DAERAH RAWAN LONGSOR DI KECAMATAN CAMBA KABUPATEN MAROS BERDASARKAN METODE GEOLISTRIK KONFIGURASI WENNER Janna, Nur; Rahmaniah, Rahmaniah; Wahyuni, Ayusari
JFT : Jurnal Fisika dan Terapannya Vol 4 No 1 (2017): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (609.816 KB) | DOI: 10.24252/jft.v4i1.10258

Abstract

This research was carried out on the Maros-Bone axis road in Sawaru Village, Camba sub-district, Maros district, South Sulawesi. This area is one of the areas prone to ground movement. This is because this area has a hilly and humid geographical condition. To find out the subsurface conditions, a research using the 2-dimensional type geoelectric resistivity method with the Wenner configuration. The results of the analysis and interpretation of the 2-dimensional cross section shows that the Camba sub-district which consists of clay rock, alluvium rock, gravel, compact sedimentary rock, and ground water and the point of dosing is at a depth of 8 meters. This layer has a resistivity value between the resistivity value of 2.71 5,m-5.78 Ωm which is characterized by water-saturated clay rocks and can cause landslides at any time because of the pressure from the top of the rock with a large value of resistivity. The slip plane is marked with clay rock at a depth of 4 meters-8 meters. This type of avalanche is a rotational avalanche.
KARAKTERISTIK TEKTONIK DAN PERIODE ULANG GEMPA BUMI PADA SESAR MATANO SULAWESI SELATAN Hariani, Hariani; Said L, Muh.; Wahyuni, Ayusari
JFT : Jurnal Fisika dan Terapannya Vol 5 No 2 (2018): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (754.409 KB) | DOI: 10.24252/jft.v5i2.10242

Abstract

This research aims to determine the tectonic characteristics of the Matano Fault by looking at the a-value and b-value values and the period of earthquake occurrence. Matano fault is an active fault in Sulawesi. So the potential for earthquakes in this area is quite high. By analyzing the earthquake return period, especially for earthquakes with large magnitudes, we can estimate when approximately large earthquakes will occur again and anticipate in dealing with them. Based on the results of research using the Least Square method and the Likelihood the value of a-value (earthquake activity) is higher than the b-value (local rock conditions). This indicates that seismic activity in Matano fault is relatively high. Whereas for b-value (rock condition) The greater the b-value the greater the level of rock fragility and vice versa. In determining the level of seismicity in an area using two methods, namely the least square method with a b-value of 0.310 and a-value of 3.177 while for the Likelihood method a b-value of 0.315 and an a-value of 2,551 from the two methods obtained by different regions that matano faults which have high seismicity or earthquake prone areas. From the calculation using the Least Square method, the fastest return period for M tercepat 4 is around 4 years and the longest is around 23 years while the results obtained from the Likelihood method are the fastest return period around 5 years and the longest is around 48 years.
IDENTIFIKASI JENIS DAN ARAH SESAR AKTIF DI WILAYAH SULAWESI SELATAN MENGGUNAKAN METODE HIPOCENTER DAN CENTROID (H-C) Lorna, Lorna; Rahmaniah, Rahmaniah; Wahyuni, Ayusari
JFT : Jurnal Fisika dan Terapannya Vol 6 No 1 (2019): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1005.334 KB) | DOI: 10.24252/jft.v6i1.10181

Abstract

This study aims to identify the direction and type of active faults in the region of South Sulawesi by using the hypocenter and Centroid (HC). The data used is secondary data obtained from the hypocenter USGS, IRIS, GEOFON website and the data obtained from BMKG centroid that is processed using the focus mechanism to coordinate limit  LS –  BT. According to the research by the method of HC obtained by the type and direction of the active faults in the region I with the type of normal foult directed N6E/32 south-north , region II with the type of strike-slip fault directed N358E/83  north-south, Region III with the type of oblique fault directed N74E/16  southwest-northeast, Region IV with the type of normal foult directed  N109E/56 northwest- southeast and in the region of V with the type of strike-slip fault directed N332E/50 southeast-northwest.
IDENTIFIKASI INDEKS KERENTANAN SEISMIK DI BENDUNGAN BILI-BILI KABUPATEN GOWA DENGAN METODE HORIZONTAL TO VERTICAL SPECTRAL RATIO (HVSR) Syah, Chairuni; Said L, Muh.; Wahyuni, Ayusari
JFT : Jurnal Fisika dan Terapannya Vol 4 No 2 (2017): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (687.398 KB) | DOI: 10.24252/jft.v4i2.10248

Abstract

A research has been conducted to determine the value of seismic vulnerability index and vulnerability index mapping at Bili-Bili dam in Gowa district. This research uses seismometer to record seismic wave signal. Data were collected by 9 measurement points. The data obtained is then processed by software Geopsy using the method Horizontal to Vertical Spectral Ratio (HVSR). The result of data processing obtained by the dominant frequency value (f0) and amplification (A0), then calculated seismic susceptibility index value. Based on the result of research indicate that seismic susceptibility index value in Bili-bili Dam area is 0,358-3,884. This indicates that areas in the Bili-Bili Dam include small to medium vulnerability indexes and are still safe in case of an earthquake.
PENGUKURAN STRIKE DAN DIP DI DESA PADAELO’ KECAMATAN MALLAWA KABUPATEN MAROS SULAWESI SELATAN Wahyuni, Ayusari; Fuadi, Nurul; Zelviani, Sri; Ayu, Dya; Aminah, Aminah; Azyurah, Zilmi; Nur, Fenty
JFT : Jurnal Fisika dan Terapannya Vol 6 No 1 (2019): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (629.108 KB) | DOI: 10.24252/jft.v6i1.10195

Abstract

It has been done field lectures to determine Strike and dip in the village in the ELO district, Mallawa Maros South Sulawesi Regency. The purpose of this lecture is to know the value of Strike and dip in the lecture site field. The methods used are methods of discussion, sampling and measurement. The tools used are geological compass, GPS, geological Hammer, ATK and meter. From the results of measurements obtained Strike and DIP N353oE/64o value at the location of the lecture field.
IDENTIFIKASI REMBESAN LIMBAH CAIR DENGAN METODE GEOLISTRIK RESISTIVITAS DI KAWASAN INDUSTRI MAKASAR (KIMA) Miswar, Miswar; Hernawati, Hernawati; Wahyuni, Ayusari
JFT : Jurnal Fisika dan Terapannya Vol 4 No 2 (2017): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (762.002 KB) | DOI: 10.24252/jft.v4i2.10257

Abstract

This research aims to determine the seepage of liquid waste in Makassar industry area or well known as KIMA. The method used is a geoelectric resistivity wenner configuration on five lines within 150 m and 75 m. From those five lines that has been measured revealed that there is seepage of a waste. It is signed with the resistivity comes to low it is <10Ω.m. The waste seepage is found at a distance of 15 m which is the closest distance from the waste source whereas the waste seepage farthest from the source of waste is found at a distance of 155 m and the waste seepage found from interpretation result uneven on each line. 
PENGUKURAN FREKUENSI NATURAL PADA GEDUNG BERTINGKAT MENGGUNAKAN ACCELEROMETER GPL-6A3P Wahyuni, Ayusari
JFT : Jurnal Fisika dan Terapannya Vol 1 (2014): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (402.863 KB) | DOI: 10.24252/jft.v1i1.10245

Abstract

This research has been carried out in multi-storey buildings by measuring natural frequencies on the building and its basic land. The recorded vibration data were analyzed with the H / V technique to get its natural frequency value. The measurement results of building floor vibrations using the GPL-6A3P accelerometer show that the natural frequency on the 3rd floor and 2nd floor is 2 Hz, while on the 1st floor is 0.6 Hz and on the subgrade of the building is 0.4 Hz. 
STRUKTUR BATUAN PENYUSUN DESA PADA’ELO KECAMATAN MALLAWA KABUPATEN MAROS Musriadi, Musriadi; Wahyuni, Ayusari; Zelviani, Sri; Trihendriansyah, Trihendriansyah; Lestari, Utari
JFT : Jurnal Fisika dan Terapannya Vol 6 No 1 (2019): Juni
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (737.71 KB) | DOI: 10.24252/jft.v6i1.10194

Abstract

This field study aims to look at the structure of rock layers and formations in the Mallawa area of Maros Regency. The method used in this studi is sampling at two points where these two points are estimated to have alignment on the layer. This method is a method of observation, direct measurement, and rock sampling at each point. From . This is obtained by several rock samples from each point which are then tested using water which serves to test the permeability and porosity of rock samples, while the hardness of the rock is tested by giving a scratch on the sample. From the research it was concluded that in general the rock structure in Pada’ Elo, Kecamatan. Mallawa, Maros Regency is composed of sedimentary rock formations.
IDENTIFIKASI LAPISAN RAWAN LONGSOR MENGGUNAKAN METODE GEOLISTRIK RESISTIVITAS KONFIGURASI WENNER SCHLUMBERGERDI DESA PANA KECAMATAN ALLA KABUPATEN ENREKANG Taufik, Muh.; Sahara, Sahara; Wahyuni, Ayusari
JFT : Jurnal Fisika dan Terapannya Vol 4 No 2 (2017): Desember
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (624.815 KB) | DOI: 10.24252/jft.v4i2.10255

Abstract

Has conducted research on landslide-prone layer in Pana village Alla subdistrict of Enrekang regency. This research aims to determine the subsurface structure in Pana village Alla subdistrict of Enrekang regency and to determine the potential landslides based of rock layers in Pana village Alla subdistrict of Enrekang regency. In this research measurements were performed using geolistrik resistivity method configuration of Wenner-Schlumberger. Measurements were taken at 5 tracks with the lenght of each track is 75 m with each electrode spacing is 5 m for each track. The result of data processing showed that 5 tracks composed of a layer of soil with plenty of water accumulation, with resistivity value of 0,169 Ωm-13,7 Ωm, a layer of shale in weather conditions with resistivity value of 4,16 Ωm-41,3 Ωm and a layer of shale in fresh condition with resistivity value of 41,3 Ωm-1141 Ωm. Futhermore, the track is concidered prone to landslide are track 3, track 4 and track 5. These predictions are because on the third track suspected slip surface with resistivity value of 29,7 Ωm-37,9 Ωm.