Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)

prosidingsnf
Website

Published by Universitas Negeri Jakarta

ISSN : 23021829 EISSN : 24769398 DOI : https://doi.org/10.21009/03

Core Subject : Science, Education, Engineering,

Electrical & Electronics Engineering Energy Physics Other

Focus and Scope: Physics education Physics Instrumentation and Computation Material Physics Medical Physics and Biophysics Physics of Earth and Space Physics Theory, Particle, and Nuclear Environmental Physics and Renewable Energy

Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)

Articles 976 Documents

14 15 16 17 18

PENGARUH GERHANA MATAHARI 09 MARET 2016 TERHADAP KANDUNGAN TOTAL ELEKTRON IONOSFER Aprilia Nur Vita; Bambang Sunardi; Sulastri Sulastri; Andi Eka Sakya
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Total electron content in the ionosphere is affected by several factors, local time, solar activity, geomagnetic disturbance, geographical latitude and longitude. This research aims to observe level variation of total electron content during solar eclipse over Indonesia on 09 March 2016. We analyzed GPS data from two GPS stations in different locations with different suns obscuration magnitude, which are Bitung Station (BTNG) and Yogyakarta station (JOG2). The magnitude of solar eclipse in Bitung Area was 0.97, while the solar eclipse magnitude in Yogyakarta reached 0.849. In addition, the data are obtained a day before, during, and a day after the solar eclipse, then compared to investigate the anomaly. Data from the previous day and a day after the solar eclipse assumed as normal data. From the result, it shows that more significant TEC anomaly recorded in Bitung if comparing with TEC variation in Yogyakarta. Keywords: Total Electron Content, ionosphere, solar eclipses, GPS, Yogyakarta, Bitung

ANALISIS COULOMB STRESS GEMPA BUMI DELI SERDANG 16 JANUARI 2017 Tio Azhar Prakoso Setiadi; Yusuf Hadi Perdana; Supriyanto Rohadi
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Earthquake magnitude M 5,6 shaken around Deli Serdang, North Sumatera on January 16th 2017. This research aims to understand Coloumb stress changes of Deli Serdang Earthquake. The analysis of Coloumb stress changes has done to indicate the influence of mainshock toward aftershocks. Earthquake source mechanisms data obtained from Global Centroid Moment Tensor (GCMT) and German Research Centre for Geosciences (GFZ). The distribution of the mainshock and aftershocks had been relocated using Modified Joint Hypocenter Determination (MJHD) method. We used arrival time of primary and secondary wave phase to relocate the hypocenter. The data obtained from the Indonesian Agency for Meteorology Climatology and Geophysics (BMKG) in the period from January 16th 2017 to January 30th 2017. Keywords: Coloumb stress changes, MJHD relocation, Deli Serdang earthquake

ANALISIS SEBARAN PETIR CLOUD TO GROUND (CG) DI WILAYAH JABODETABEK PADA TAHUN 2016 Jaka Anugrah Ivanda Paski; Yusuf Hadi Permana; Dyah Ajeng Sekar Pertiwi
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Lightning is an electrical event that occurs due to high-voltage, induced charge discharges from Cumulonimbus clouds. An induced charge may occur between clouds (Cloud to Cloud) or between clouds and ground (Cloud to Ground). The process of lightning discharge to the ground always travels the shortest distance with the smallest electrical resistance. Lightning strikes can have serious consequences such as electronic circuit breakage, telecommunication interruptions and fatalities. This study aims to analyze spatial and temporal characteristic of Cloud to Ground (CG) lightning strikes in the Jabodetabek area within one year. Research is useful for mapping the area and time prone to lightning strike events. The data used are obtained from the lightning detector image recorder operated by BMKG in 2016. The method of lightning strike density analysis is grouped in the three-month period of December-January-February (DJF), March-April-May (MAM), June - July-August (JJA). Lightning detector image recording is also validated with BMKG Tangerang weather radar image on the day of the greatest lightning strike event. The analysis results show that the peak of CG strike occurred in the MAM period around the Bogor area. Keywords: cloud to ground, lightning, lightning detector

ANALISIS DAMPAK FLARE TIPE X SEPTEMBER 2014 TERHADAP SISTEM NAVIGASI DAN POSISI BERBASIS SATELIT DARI PENGAMATAN GISTM KUPANG Asnawi Husin; Tiar Dani; Ali Warsito
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Rapid changes in the ionospheric electron density may cause the satellite signals disturbed, because ionosphere layer is a dispersive medium for radio satellite frequencies. Electron density and ions in the ionosphere increases with increasing of solar activity and will have an impact on the delay of the radio wave propagation from the satellite to the receiver. The delay effects to the level of accuracy of position measurement on navigation satellite systems (Global Navigation Satellite System, GNSS). On September 10, 2014, a class X1.6 of the flare was released at 17:45 UTC, accompanied by a coronal mass ejection (CME). As a result, on September 12, 2014, a strong category of geomagnetic storm occurred. The ionospheric response to the geomagnetic storms has caused a positive storm due to an increase in electron content. Based on TEC measurement by using GISTM Bandung and Kupang, there were an increase of TEC with maximum deviation reached 28 TEC Unit for Bandung station and 35 TEC for Kupang station. The critical frequency of the ionosphere F layer (foF2) also increased during geomagnetic storms, about 4.5 MHz, taken from the ionsonde CADI at Kupang station. Results show the analysis of the absolute position of GPS measurements from fixed GPS station at Darwin Australia during the main phase of geomagnetic storm on September 12, 2014 has caused vertical errors reached more than 20 meters. Keywords: Flare, GNSS, Ionosphere

ANALISIS CITRA DIGITAL UNTUK SAMPEL BATUAN MENGGUNAKAN MICRO-CT SCANNER SKYSCAN 1173 Aceng Kurnia Rochmatulloh; Ulpa Zein Fawziah; Rizki Fahmi Sumaryono; Selly Feranie; Fourier Dzar Eljabbar Latief
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Digital image analysis has been done on rock samples of scanning results using Bruker Skyscan 1173 Micro-CT Scanner. The analysis is done qualitatively and quantitatively to know the characteristics of the sample image of the rock. The digital samples of rock produced from the scanning process are 380 x 380 x 380 pixels in size. Qualitative analysis is done by using CTAn (2D) and CTVox (3D) software. Quantitative analysis is done by calculating pore size, open porosity, closed porosity, total porosity and fractal dimension using CTAn software. The consensus analysis of the use of Cartesian axes of digital data in the software used (CTAn, CTVox, DataViewer, ImageJ and Matlab) is done by examining 2D trans-axial imagery (XY), sagittal (field ZY), and coronal (XZ). The results of the rock parameters analyzed in the rock samples indicate that the rocks belong to the type of faneric/fine fanerokristalin, have a porosity that is special, the pores in the rock are well connected, and the fluid flow in the rock is quite complex. Rock samples obtained from various software show similarities of image on CTAn, CTVox, and DataViewer software, but unlike the image of ImageJ and Matlab so it is necessary to change the coordinate axis if in advanced processing using both devices. Keywords: digital image analysis, porosity, fractal dimension, porous media

HUBUNGAN RENTANG UKURAN BUTIR TERHADAP BESARAN BATUAN Siti Sarah Munifah; Siska Nuraidah; Siti Marya Darmawati; Selly Feranie
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Porous rock composed of solid material and pores. Rock quality can be determined by various aspects as porosity, specific surface area and permeability which are affected by the size of grain occupying space on the rock. Rock model was then done by random penetrable sphere packing method which represent the simplest form of rock. Porosity is the ability to reserve, meanwhile permeability is the ability to deliver fluids without wrecking the rock structure. Specific surface area is the ratio of surface area with material mass or volume. The greater the variety of grain used, the smaller the value of porosity and permeability are, because of the rock spaces occupied will be larger. Thus, the value of specific surface area will increase. Keywords: porous rock models, porosity, permeability, specific surface area

PENGARUH DISTRIBUSI UKURAN BUTIRAN TERHADAP KOMPLEKSITAS ALIRAN FLUIDA PADA MODEL BATUAN BERPORI 3D Nur Rahmi; M Najib Alyasyfi; Peny Saptiani; E Riska Rahayu P; Fourier D E Latief; Selly Feranie
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Differences in the distribution of grain size (sorting) in porous rocks can affect the fluid flow complexity even though they have the same porosity. It can be analyzed by performing simple modeling that assumes granules can be represented in perfect overlapping, rounded forms. Rock models can be made by setting the main parameters of the granular radius until the desired porosity is reached. From the model made, the fluid flow complexity can be analyzed by using the tortuosity parameters in the x, y, and z directions of the rock model. Tortuosity is calculated as a comparison between the flow traces passing through the pores connected to the length of the side in the direction of the rock model flow, and trace flow tracking is done by the full random walk cubical method. In measuring the fluid flow complexity in this rock, porosity is made equal to three models, which is 15%. Porous rock models are arranged by placing the grains of varying radius (small, medium, and large) that are randomly distributed and overlapping in a 200 x 200 x 200 medium. From the results of calculations performed tortuosity values do not provide a specific pattern for the three samples in three different path tracking directions. This indicates that the medium with porosity can have diverse and anisotropic complexities. Keywords: porous distribution, tortuosity, complexity of fluid flow, model of porous rock

VARIASI SPASIAL GETARAN TANAH AKIBAT GEMPABUMI (STUDI KASUS: RANGKAIAN GEMPABUMI SUMATERA UTARA 9-13 FEBRUARI 2017) Sesar Prabu Dwi Sriyanto; Indah Fajerianti; Amalia Nasrurroh; Nur B Febryana; Indri Ifantyana; Kevin D Wicaksono; Market Sofyan
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

The ground motion that caused bythe earthquakee is dangerous since it can break down buildingsÂ. It is the result of convolution of source function and raypath function of seismic wave, including local site function on seismometer location. The aim of this study is to analyze the characteristic variations of spatial ground motion from 7 earthquake events happened from 9 till 13 on February 2017 in North Sumatra. Based on the recording of ground motion from 8 seismic stations around the epicenter, the value of the PGA (Peak Ground Acceleration) and PGV (Peak Ground Velocity) can be calculated. The analysis of local site and its influence to ground motion is also calculated using HVSR (Horizontal to Vertical Spectral Ratio) method. Generally, the value of the PGA and PGV are inversely equal to epicenter distance. The soft soil condition in seismic stations cause wave amplification resulted in the magnification of PGA and PGV value. Besides, the rupture directivity can also affect the value of peak ground motion. In this case, the value of the PGA and PGV tend to be high in the north area of the epicenter. It indicates that north area has the highest potential for seismic hazard than the south area if it is reviewed on this source. Keywords: spatial variation, peak ground motion, local site effect, rupture directivity

ANALISIS PERUBAHAN POLA DEKLINASI PADA GEMPA BUMI SIGNIFIKAN (Mâ‰¥7.0) WILAYAH SUMATERA Indah Fajerianti; Sigit Eko Kurniawan
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Earthquakes are part of the tectonic dynamic process. The process continues in line with changes in the magnitude and direction of the geomagnetic field due to the secular variety. This study aims to review whether there is any change in the pattern of the Geomagnetic declination before and after the occurrence of significant earthquakes (M >= 7. 0) in the Sumatra region during the period 1900 to 2015. The research location is at 6N-10S and 85-110E. The declination data used in the study is based on the International geomagnetic 12 Reference Field (IGRF 12) model within 10 year time span before and after the occurrence of a significant earthquake. Earthquake parameter data are obtained from the catalog of United States Geological Survey (USGS). Forty-one significant earthquakes were recorded and 8 earthquakes are selected as the object of the study. This study uses qualitative analysis by comparing the change in the pattern of declination at a location near the epicenter of an earthquake with a point considered as the region affected by seismic activity. Based on the analysis, the change in declination patterns before and after the occurrence of a significant earthquake is found. Keywords: geomagnetic, declination, earthquakes, Sumatra

STUDI PENGARUH SUHU DAN TEKANAN UDARA TERHADAP OPERASI PENERBANGAN DI BANDARA INTERNASIONAL KUALANAMU I. J. A. Saragih; B. W. Yonas; N. Rinaldy
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Kualanamu International Airport (KNIA), operated since 2013, is a new airport, which supports the commercial aviation to replace the Polonia Airport. As the new airport, it is necessary to study the effect of weather on the smooth operation of flights on the Kuala Namu Airport, among others, is the element of surface temperature and air pressure (QFE). Using multiple linear regression, it can be determined the correlation of temperature and air pressure to the airplane lift force (lift). Temperature and air pressure are also used in the calculation of the height of the air density (density height). The result showed that the temperature and air pressure together have a very strong effect on the lift in every month throughout the year. The decrease in air temperature and or increase of air pressure is directly proportional to the rise of lift. The air temperature has the strongest effect in April (92.93%) and the weakest in March (84.82%). The air pressure has the strongest effect in September (24.80%) and the weakest in February (08,76%). The result of the calculation using the formula density height found that in 2015 the highest density height in June (1756.34ft) and the lowest in January (1469.11 feet). While in 2016, the density height has the highest value in March (1806.32ft and the lowest in February (1513.23ft). Keywords: air temperature, air pressure, lift, density height

Page 16 of 98 | Total Record : 976

14 15 16 17 18

Filter by Year

2012 2026

Filter By Issues

All Issue Vol. 14 No. 1 (2026): Joint Prosiding IPS dan Seminar Nasional Fisika Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024 Vol. 12 (2024): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2023 Vol 11 (2023): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2022 Vol 10 (2022): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2021 Vol 9 (2020): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2020 Vol 8 (2019): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2019 Vol 7 (2018): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2018 Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017 Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016 Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015 Vol 3 (2014): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2014 Vol 2 (2013): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2013 Vol 1 (2012): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2012 More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Dewi Muliyati

Contact Email
dmuliyati@unj.ac.id

Phone
-

Journal Mail Official
snf@unj.ac.id

Editorial Address
Fisika FMIPA Universitas Negeri Jakarta GHA Lt.5 Jl Rawamangun Muka No.1

Location
Kota adm. jakarta timur,

Dki jakarta

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Dewi Muliyati

Contact Email dmuliyati@unj.ac.id

Phone -

Journal Mail Official snf@unj.ac.id

Editorial Address Fisika FMIPA Universitas Negeri Jakarta GHA Lt.5 Jl Rawamangun Muka No.1

Location Kota adm. jakarta timur, Dki jakarta INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Dewi Muliyati

Contact Email
dmuliyati@unj.ac.id

Phone
-

Journal Mail Official
snf@unj.ac.id

Editorial Address
Fisika FMIPA Universitas Negeri Jakarta GHA Lt.5 Jl Rawamangun Muka No.1

Location
Kota adm. jakarta timur,

Dki jakarta

INDONESIA