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All Journal Jurnal Sains Materi Indonesia BULETIN FISIKA International Journal of Life Sciences (IJLS) International Journal of Physical Sciences and Engineering (IJPSE)
Sukarasa, I Ketut
Udayana University
Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Physics Social Sciences Other

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Validasi Curah Hujan Harian Berdasarkan Data Global Satellite Mapping Of Precipitation (Gsmap) dengan Data Observasi di Wilayah Bali I Gusti Agung Made Duwanda; I Ketut Sukarasa
BULETIN FISIKA Vol 23 No 2 (2022): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2022.v23.i02.p05

Abstract

Research has been done on the validation of rainfall based on Global Satellite Mapping of Precipitation GSMaP data with observation data in the Bali area. The method used in this research is Pearson correlation, root mean square error (RMSE), and mean square error (MBE). This study aims to validate GSMaP rainfall data with observations in the Bali area. In general, GSMaP rainfall data tends to have a smaller value than observation data, but has almost the same data pattern in each area with rainfall patterns that occur from November to March. The study shows a strong positive correlation value (> 0.5), where in the Ngurah Rai area the value of = 0.889 with =0.558 and = 0.061, in Negara the value of = 0.887 with = 0.595 and = 0.049, and in Denpasar area the value of = 0.879 dengan = 0.444 dan = 0.058. This shows that GSMaP satellite data is quite valid and can be used especially in 3 observation areas, namely Ngurah Rai, Negara, and Denpasar.
Relokasi Hiposenter Gempabumi di Daerah Sesar Abang-Culik, Karangasem dengan Menggunakan Metode Coupled Velocity-Hypocenter Made Prama Yudistira; I Ketut Sukarasa; I Made Kris Adi Astra
BULETIN FISIKA Vol 24 No 1 (2023): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2023.v24.i01.p03

Abstract

Research has been done about the relocation of earthquake hypocenter position, seismic wave local velocity and correction of seismic wave recording station at the Abang-Culik Fault area according to coordinate 115,25°-115,75° BT and 8,00°-8,60° LS. Data which was used on this research was the earthquake data that occur in the 2015-2020 period. The research was conducted using the coupled velocity-hypocenter method. From the relocation result, the position of the earthquake hypocenter shifted, which initially spread to become more concentrated in the fault plane area. The local velocity decreasing a lot in the 3rd layer which was influenced by the presence of the Mount Agung magma pocket in that area. The correction of Station shown that only 1 station has a negative value of delay time, namely IGBI station while the other 13 stations show a positive value of delay time.
Utilization of atmega328 PIR and microcontroller sensors to improve CCTV online performance Sukarasa, I Ketut; Adnyana, I Gusti Agung Putra; Purnamaimun, Ita; Hatimah, Husnul
International journal of physical sciences and engineering Vol. 2 No. 3: December 2018
Publisher : Universidad Tecnica de Manabi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (673.929 KB) | DOI: 10.29332/ijpse.v2n3.182

Abstract

A device that can increase security against theft has been made, thus reducing public anxiety to leave their home when the house is empty, especially for a long time. Online CCTV that has been equipped with a PIR sensor, ATmega328 microcontroller, and SIM800L and ISD1820 sound module. The advantages of this system that has been made to have the advantage that not only can be monitored through the monitor screen but can also be seen through a smartphone, another advantage is that the homeowner can prevent theft because the device is equipped with an alarm, if there is movement detected by the PIR sensor in the room, SIM800L will send an SMS that says "There is a movement" to the cell phone number already in the program with the SMS received by the recipient, the homeowner can see whether the movement is a thief or not, if the incoming person is a thief then the SMS recipient can send an SMS reply " on "to turn on the speaker and buzzer. If you want to turn off Buzzer, the homeowner can send an SMS "off".
Analisis Sebaran Debu Vulkanik Erupsi Gunung Agung 2018 dan Pengaruhnya Terhadap Suhu Permukaan Darat Wilayah Bali Dengan Menggunakan Metode Split Windows Septian Jonathan; I Ketut Sukarasa; I Wayan Wirata
BULETIN FISIKA Vol 22 No 2 (2021): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2021.v22.i02.p09

Abstract

Sebaran awan debu vulkanik erupsi Gunung Agung 2018 dapat diketahui dengan pengolahan data komposisi RGB menggunakan metode split windows pada aplikasi SATAID, yang dapat membedakan awan debu vulkanik atau awan meteorologi (awan air/es), dan juga dapat mengetahui arah angin yang terjadi pada saat kejadian. Data komposisi RGB diperoleh dari satelit cuaca Himawari-8 melalui kanal IR (10,4 µm), kanal I2 (12,4 µm) dan kanal I4 (3,9 µm) yang mampu mengidentifikasi keberadaan awan debu vulkanik. Kata kunci: Gunung Agung, Himawari-8, Erupsi, Split Windows, RGB.
Identifikasi Hubungan Aktivitas Petir Tipe Cloud to Ground Dengan Curah Hujan Di Seputaran BMKG Sanglah Tahun 2018 Lintang Ardhana Reswari; I Ketut Sukarasa; I Putu Dedy Pratama
BULETIN FISIKA Vol 22 No 2 (2021): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2021.v22.i02.p07

Abstract

Denpasar has a high lightning hazard. CG (Cloud to Ground) lightning type is the lightning that have a direct impact to human. This study aims to determine the relationship between the amount of lightning strikes and rainfall that occurred in BMKG Sanglah on 2018. The data used are rainfall data obtained from Automatic Rain Gauge (ARG) and Cloud to Ground (CG) lightning data from lightning detectors installed at BMKG Sanglah Denpasar. CG lightning data (positive and negative) is limited within a 5 km radius of sensor. The lightning and precipitation data obtained then looked at the correlation using spearman correlation test to find out the relationship between rainfall and lightning The results obtained show the relationship between daily and monthly rainfall and CG lightning with Spearman correlation of 0,372 and 0.834, which means that the relation between the two variables has proportionate correlation where rainfall is bigger than lightning will also.
Pemetaan Tingkat Bahaya Bencana Gempabumi Di Wilayah Banyuwangi Berdasarkan Percepatan Tanah Maksimum Muhamad Abdul Ghofur; I Ketut Sukarasa; Rudy Darsono
BULETIN FISIKA Vol 23 No 1 (2022): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2022.v23.i01.p06

Abstract

Banyuwangi area is an earthquake prone area because it is close to the megathrust zone (indo-Australian and Eurasian plate junction) and back arc. The aim of this research is to determine the most suitable empirical formula for Banyuwangi area and to determine the level of earthquake hazard in Banyuwangi region. The peak ground acceleration value is determined by comparing 5 empirical equations, namely the empirical formula of Mc. Guirre R.K (1963), Esteva (1970), Donovan (1973), Setiawan (2012), and Fukushima & Tanaka (1990). The results show that the empirical formula Setiawan is the most suitable formula among other empirical formula. The largest earthquake hazard level is in the eastern Banyuwangi region in the scale of VII-VIII MMI, with the highest peak ground acceleration value of 301,801 gal.
ANALISA TINGKAT RISIKO BENCANA GEMPA BUMI DI WILAYAH BALI Rudy Darsono; I Ketut Sukarasa; Yohanes Agus Setiawan
BULETIN FISIKA Vol 17 No 1 (2016): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Bali region is prone to earthquake disasters because it lies between the two zones that cause earthquake (back arc trust at the north and subduction zones at the south) and also vulnerable to earthquake disasters because of high population density. These conditions threaten the safety of lives and property of the population, so it needs to be research to analyze the risk of earthquake disaster in Bali. For identification of earthquake disaster risk, in this study using 3 factor: earthquake danger factor is Peak Ground Acceleration in Bali, vulnerability factor is population density every district in Bali, and resilience factors is HDI (Human Development Index) every district in Bali. PGA value calculation using the atenuation function of Fukushima and Tanaka, for disaster risk index calculation using AHP (Analytical Hierarchy Process). The conclusion, regions that obtained the highest level of earthquake disaster risk are Karangasem and northern Buleleng, while the lowest are southern part of Badung, northern part of Gianyar and Nusa Penida.
Rare earth ion contribution in barium hexaferrite structure to a change of magnetocrystalline anisotropy to improving its magnetic properties Adnyana, I Gusti Agung Putra; Sukarasa, I Ketut; Adi, Wisnu Ari
International journal of physical sciences and engineering Vol. 4 No. 2: August 2020
Publisher : Universidad Tecnica de Manabi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29332/ijpse.v4n2.433

Abstract

Rare earth ion contribution in barium hexaferrite structure to a change of magneto-crystalline anisotropy to improving its magnetic properties has been investigated. A series of simples of Ba1-xCexFe12O19 with the variation of x (x = 0.0-0.5) were prepared by solid-state reactions using mechanical deformation techniques. The oxide materials used for sample preparation are BaCO3, Fe2O3, and CeO2 with the ratio of material used is adjusted to the stoichiometric calculation for variations of Ce4+ substitution. The phase identification results show that the reaction took place perfectly and successfully formed a single-phase Ba1-xCexFe12O19 namely at the composition x = 0 and x = 0.1. while for the composition x> 0.1, it is formed in three phases. Particle morphology in the composition x = 0 and x = 0.1 has very good and uniform particle homogeneity across the surface of the sample in the form of polygonal particles. So the substitution of Ce atoms into the barium hexaferrite structure is only able at the composition limit x = 0.1. In the composition x = 0.1 has been able to increase the coercivity and magnetization fields. It can be concluded that the permanent magnet with the composition Ba0,9Ce0.1F12O19 gives the best results.
ANALISA TINGKAT BAHAYA DAN KERENTANAN BENCANA GEMPA BUMI DI WILAYAH NUSA TENGGARA TIMUR (NTT) Ni Made Rysnawati; I Ketut Sukarasa; Ida Bagus Alit Paramarta
BULETIN FISIKA Vol 18 No 1 (2017): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

East Nusa Tenggara is a region in Indonesia which included in the category of hazard prone to earthquakes, because it is flanked by two earthquakes zones, (subduction zone at the south and back arc trust in the north). It is also vulnerable to earthquake disasters because of high population density. These conditions would threaten the safety of lives and property of the population, so it needs to be research to analyze the level of earthquake hazard and vulnerability in East Nusa Tenggara. For identification of the level of hazard and the vulnerability of the earthquake in this study using two factors: the danger factor with indicator Peak Ground Acceleration, vulnerability factors with indicators of population density districts in East Nusa Tenggara. The calculation of the value of PGA use attenuation function of Fukushima and Tanaka. From the calculation of the data obtained that has a very high earthquake hazard is in Ende and Alor district, while the district has a very high risk of vulnerability is in Sikka, Sumba Barat Daya and Sabu Raijua.
Identifikasi Deformasi Pulau Bali Berdasarkan Rekaman Data GPS, Menggunakan Software GAMIT/GLOBK 10.6 Komang Ngurah Suarbawa; I Ketut Sukarasa; Elvin Riyono
BULETIN FISIKA Vol 22 No 1 (2021): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2021.v22.i01.p07

Abstract

Research on the tectonic activity of the island of Bali has been carried out which aims to identify and determine the direction of the deformation movement of the island of Bali. The research was conducted using local GPS data recorded at eleven observation points on the island of Bali. Data processing was carried out using GAMIT / GLOBK 10.6 SOFTWARE and several supporting software such as teqc to test the quality of GPS and GMT recording data to plot the processed data. The results showed that there was a shift in the observation point which indicates tectonic activity on the island of Bali. The point shift pattern shows a shift that tends to be east to southeast. The deformation pattern is thought to have occurred due to tectonic plate activity in the eastern and southern parts of the island of Bali.
Co-Authors Aditya, I Putu Sukma Nanda Adnyana, I Gusti Agung Putra Alfha Abrianto L. Tobing Ardhianto Septiadhi Bayu Baskara Desiderius Jarut Elvin Riyono Fernandes Flaviana Pinto Gusti Ngurah Sutapa Heppy Febrian Abdi Bintari Husnul Hatimah Husnul Hatimah, Husnul I G. A. Widagda I Gede Hendrawan I Gusti Agung Made Duwanda I Ketut Putra I Made Dwi Wiratmaja I Made Kertayasa I Made Kris Adi Astra I Putu Dedy Pratama I Putu Sukma Nanda Aditya I Wayan Andi Yuda I Wayan Wirata Ida Bagus Alit Paramarta Ita Purnamaimun Komang Ngurah Suarbawa Lintang Ardhana Reswari Made Prama Yudistira Mahmud Yusuf Mahmud Yusuf Muhamad Abdul Ghofur Ni Kadek Sugestiani Ni Luh Gede Desy Suryaningsih Ni Made Rysnawati Ni Wayan Meri Monika Sari Oktaviana Nurhayati Murni Purnamaimun, Ita Rakhmat Prasetia Rudy Darsono Rudy Darsono Sanjaya Natadiredja Septian Jonathan Tobing, Alfha Abrianto L. Wayan Mita Restitiasih Wisnu Ari Adi Wisnu Ari Adi Yohanes Agus Setiawan